Catalog

HA 35.11 ·
Fi d M
Fixed-Mounted
t d Ci
Circuit-Breaker
it B k S Switchgear
it h
Edition
September 2017 Type 8DA and 8DB up to 40.5 kV,
Gas-Insulated
Medium-Voltage Switchgear

siemens.com/medium-voltage-switchgear
 Application
Typical uses

R-HA35-170.tif

Application
Public power supply
system
R-HA35-132c.tif

Application
Traction power supply

R-HA35-171.tif
R-HA35-092.tif

Application Industry
Application
R-HA25-363.tif

Offshore and industry R-HA35-123.psd

2 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Contents

Fixed-Mounted Circuit- Application Page

Breaker Switchgear Versions, typical uses,
ratings 4 and 5

Type 8DA and 8DB Requirements

up to 40.5 kV, Features, safety, technology 6 and 7

Gas-Insulated Technical data

Electrical data 8 and 9
Room planning 10 and 11
Shipping data 12
Medium-Voltage Switchgear
Classification 13

Catalog HA 35.11 · September 2017

Dimensions
Front views, sections,
Invalid: Catalog HA 35.11 · 2015 floor openings, fixing points 14 to 21

www.siemens.com/medium-voltage-switchgear Product range

Single-busbar panels 22 and 23
Double-busbar panels 24 to 30
Single-pole and
double-pole single-busbar panels 8DA11/12 31

Design
Basic panel design 32 and 33
Gas compartment scheme 34 and 35

Components
Vacuum circuit-breaker 36 and 37
Three-position disconnector 38 and 39
Control board 40
Busbar, busbar components 41
Current and voltage transformers 42 and 43
Panel connection 44 and 45
Panel connection (commercially available
cable plugs and bar connections) 46
Indicating and measuring equipment 47 to 50
Protection, control, measuring and
monitoring equipment 51 to 53
ANSI design 54 to 57

Standards
Standards, specifications, guidelines 58 and 59

First 8DA10 – Year of manufacture 1982 60

The products and systems described in this catalog
are manufactured and sold according to a certified
management system (acc. to ISO 9001, ISO 14001
and BS OHSAS 18001).

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 3
 Application
Versions

R-HA35-135.tif

R-HA35-136.tif

R-HA35-137.tif

Circuit-breaker panel 8DA10 Circuit-breaker panel 8DB10 Circuit-breaker panel 8DA11 / 12

4 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Application
Typical uses, ratings

Fixed-mounted circuit-breaker switchgear 8DA and 8DB Electrical data (maximum values) and dimensions
is indoor, factory-assembled, type-tested, single-pole Single-busbar and double-busbar switchgear
metal-enclosed, gas-insulated switchgear with metallic
Rated voltage kV 12 24 36 40.5
partitions 3), for single-busbar and double-busbar applica-
Rated frequency Hz 50 / 60 50 / 60 50 / 60 50 / 60
tions, as well as for traction power supply systems.
Rated short-duration
It is used in transformer and switching substations, e.g., in: power-frequency
withstand voltage kV 28 1) 50 70 85 2)
• Power supply companies
Rated lightning impulse
• Power stations withstand voltage kV 75 1) 125 170 185 2)
• Cement industry Rated peak withstand current kA 100/104 100/104 100/104 100/104
• Automobile industry Rated short-circuit
• Iron and steel works making current kA 100/104 100/104 100/104 100/104
• Rolling mills Rated short-time
withstand current 3 s kA 40 40 40 40
• Mining industry
Rated short-circuit
• Textile, paper and food industries breaking current kA 40 40 40 40
• Chemical industry Rated normal current
• Petroleum industry of the busbar A 5000 5000 5000 5000
• Pipeline installations Rated normal current A 2750 4) 2750 4) 2750 4) 2750 4)
of feeders A 3150 5) 3150 5) 3150 5) 3150 5)
• Offshore installations
Width mm 600 600 600 600
• Electrochemical plants
Depth (wall-standing
• Petrochemical plants arrangement)
• Shipbuilding industry – Single busbar mm 1625 1625 1625 1625
• Diesel power plants – Double busbar mm 2665 2665 2665 2665

• Emergency power supply installations Height

– Standard mm 2350 2350 2350 2350
• Lignite open-cast mines – With high low-voltage
• Traction power supply systems. compartment mm 2700 2700 2700 2700

Single-pole and double-pole traction power supply switchgear

Rated voltage kV 17.25 27.5
Rated frequency Hz 16.7 50 / 60
Rated short-duration
power-frequency
withstand voltage kV 50 95
Rated lightning impulse
withstand voltage kV 125 200
Rated peak withstand current kA 80 80
Rated short-circuit
making current kA 80 80
Rated short-time
withstand current 3 s kA 31.5 31.5
Rated short-circuit
breaking current kA 31.5 31.5
Rated normal current
of the busbar A 3150 3150
Rated normal current
of feeders A 2500 2500
Width mm 600 600
Depth
– Single-pole traction
switchgear mm
– Double-pole traction 865 865
switchgear mm 1245 1245
Height
– Standard mm 2350 2350
1) 42 kV / 70 kV according to some national requirements – With high low-voltage-
compartment mm 2700 2700
2) 95 kV / 190 kV according to some national requirements
3) Corresponds to ”metal-clad“ according to former standard IEC 60298
4) 2750 A without forced ventilation (8DB10 on request)
5) 3150 A with forced ventilation (8DB10 on request)

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 5
 Requirements
Features Safety

Environmental independence Personal safety

The enclosed high-voltage part of 8DA and 8DB switchgear • Safe-to-touch and hermetically sealed primary enclosure
is suitable for applications under aggressive ambient condi- • All high-voltage parts including the cable terminations,
tions, such as: busbars and voltage transformers are metal-enclosed
• Saline air • Capacitive voltage detecting system to verify safe
• Air humidity isolation from supply
• Dust • Operating mechanisms and auxiliary switches safely
• Condensation. accessible outside the primary enclosure (switchgear
It is tight to ingress of foreign objects, such as: housings)
• Dust • Due to the system design, operation is only possible
• Pollution with closed switchgear enclosure
• Small animals. • Standard degree of protection IP 65 for all high-voltage
parts of the primary circuit, IP 3XD for the switchgear
The application is independent of the site altitude.
enclosure according to IEC 60529
Compact design • High resistance to internal arcs by logical mechanical
interlocks and tested switchgear enclosure
Thanks to the use of gas insulation, compact dimensions
are possible. • Panels tested for resistance to internal faults up to 40 kA
• Logical mechanical interlocks prevent maloperation
Thus:
• Make-proof earthing by means of the vacuum circuit-
• Existing switchgear rooms can be used effectively
breaker.
• New constructions cost little
• Costly city-area space is saved. Security of operation
• Hermetically sealed primary enclosure independent of
Maintenance-free design
environmental effects (pollution, humidity and small
Switchgear housings designed as sealed pressure systems, animals)
maintenance-free switching devices and enclosed cable • Maintenance-free in an indoor environment according to
plugs ensure: IEC 62271-1
• Maximum supply reliability • Two-phase and three-phase short-circuits between the
• Personnel safety primary conductors are excluded by the single-pole
• Sealed-for-life design according to IEC 62271-200 primary enclosure
(sealed pressure system) • In isolated or compensated systems, low-current
• Reduced operating costs earth-fault currents are self-extinguishing
• Cost-efficient investment. • Operating mechanisms of switching devices accessible
outside the primary enclosure (switchgear housings)
Innovation
• Metal-enclosed, plug-in inductive voltage transformers
The use of digital secondary systems and combined mounted outside the switchgear housings
protection and control devices ensures
• Current transformers as ring-core current transformers
• Clear integration in process control systems mounted outside the switchgear housings
• Flexible and highly simplified adaptation to new system • Complete switchgear interlocking system with logical
conditions and thus to cost-efficient operation. mechanical interlocks
Service life • Bolted switchgear housings sealed for life
Under normal operating conditions, the expected service • Minimum fire load
life of gas-insulated switchgear 8DA and 8DB is at least • Option: Aseismic design.
35 years, probably 40 to 50 years, taking the tightness of
Reliability
the enclosed high-voltage part into account. The service
life is limited by the maximum number of operating cycles • Type and routine-tested
of the switching devices installed: • Standardized, NC production processes
• For circuit-breakers, according to the endurance class • Quality assurance in accordance with DIN EN ISO 9001,
defined in IEC 62271-100 DIN EN ISO 14001 and BS OHSAS 18001
• For three-position disconnectors and earthing • More than 100,000 switchgear panels of Siemens in
switches, according to the endurance class defined operation worldwide for many years.
in IEC 62271-102.

6 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Requirements
Technology

General Modular design

• Single-pole enclosure of the primary part by modular • Replacement of the panel connection housings or the
switchgear housings made of corrosion-resistant circuit-breaker possible without interrupting busbar
aluminum alloy operation
• Insulating gas SF6 (fluorinated greenhouse gas in sealed • Low-voltage compartment removable, plug-in bus wires
pressure system according to IEC 62271-1) • Extension of double-busbar switchgear 8DB10 possible
• Three-position disconnector as busbar disconnector and without interrupting operation
feeder earthing switch • Option: Extension of single-busbar switchgear 8DA10
• Make-proof earthing by means of the vacuum circuit- possible without interrupting operation.
breaker
Instrument transformers
• Compact dimensions due to gas insulation
• Hermetically bolted switchgear housings made of • Current transformers not subjected to dielectric stress
corrosion-resistant aluminum alloy • Metal-enclosed, plug-in and disconnectable voltage
• Single-pole metal-enclosed, gas-insulated busbars transformers.
• Cable connection with inside-cone plug-in system, or for Vacuum circuit-breaker
connection of gas-insulated and solid-insulated bars
• Maintenance-free under normal ambient conditions
• Wall-standing or free-standing arrangement according to IEC 62271-1
• Installation and extension of existing switchgear at both • No relubrication or readjustment
ends without modification of existing panels.
• Vacuum interrupters sealed for life
Interlocks • Up to 10,000 operating cycles (maintenance-free)
• According to IEC 62271-200 • Option: Up to 30,000 operating cycles
• Logical mechanical interlocks prevent maloperation (maintenance required).
• Three-position disconnector can only be operated with Secondary systems
circuit-breaker in OPEN position
• Protection, measuring and control equipment
• Circuit-breaker can only be operated with three-position
• Option: Numerical multifunction protection relay
disconnector in end position and operating lever
with integrated protection, control, communication,
removed
operating and monitoring functions
• Locking device for circuit-breaker
• Can be integrated in process control systems.
• Locking device for three-position disconnector
• “Feeder earthed” locking device
• Option: Electromagnetic interlocks.

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 7
 Technical data
Electrical data, functional level, temperature for single-busbar and double-busbar switchgear

Common elec- Rated insulation level Rated voltage Ur kV 12 24 36 40.5

trical data, Rated short-duration power-frequency
functional withstand voltage Ud:
level and – phase-to-earth, open contact gap kV 28 1) 50 2) 70 85 3)
temperature – across the isolating distance kV 32 1) 60 2) 80 90 3)
Rated lightning impulse withstand voltage Up:
– phase-to-earth, open contact gap kV 75 125 170 185 4)
– across the isolating distance kV 85 145 195 220 4)
Rated frequency fr Hz 50 / 60 50 / 60 50 / 60 50 / 60
Rated normal current Ir of the busbar 9) A 1250 1250 1250 1250
A 2000 2000 2000 2000
A 2500 2500 2500 2500
A 3150 3150 3150 3150
A 4000 4000 4000 4000
A 5000 5000 5000 5000
Rated functional level pre (relative) of the busbar 70 / 120 kPa at 20 °C
Minimum functional level pme 50 / 100 kPa at 20 °C
Ambient air temperature – 5 °C to + 55 °C 13)

Data of the switchgear panels

Circuit- Rated normal current Ir 9) A 1250 1250 1250 1250
breaker panel, A 1600 1600 1600 1600
disconnector A 2000 2000 2000 2000
panel 6) A 2500 2500 2500 2500
A 2750 10) 2750 10) 2750 10) 2750 10)
A 3150 11) 3150 11) 3150 11) 3150 11)
Rated short-time withstand current Ik tk = 3 s up to kA 40 40 40 40
Rated peak withstand current Ip 5) up to kA 100 / 104 100 / 104 100 / 104 100 / 104
Rated short-circuit making current Ima 5) up to kA 100 / 104 100 / 104 100 / 104 100 / 104
Rated short-circuit breaking current Isc up to kA 40 40 40 40
Electrical endurance of at rated normal current 10,000 operating cycles 12)
vacuum circuit-breakers at rated short-circuit breaking current 50 breaking operations
Rated functional level pre (relative) for feeders 70 / 120 kPa at 20 °C
Minimum functional level pme 50 / 100 kPa at 20 °C

Bus section- Rated normal current Ir 9) A 1250 1250 1250 1250

alizer, bus A 2000 2000 2000 2000
coupler 7) A 2500 2500 2500 2500
A 2750 10) 2750 10) 2750 10) 2750 10)
A 3150 11) 3150 11) 3150 11) 3150 11)
Rated short-time withstand current Ik tk = 3 s up to kA 40 40 40 40
Rated peak withstand current Ip 5) up to kA 100 / 104 100 / 104 100 / 104 100 / 104
Rated short-circuit making current Ima 5) up to kA 100 / 104 100 / 104 100 / 104 100 / 104
Rated short-circuit breaking current Isc up to kA 40 40 40 40
Electrical endurance of at rated normal current 10,000 operating cycles 12)
vacuum circuit-breakers at rated short-circuit breaking current 50 breaking operations
Rated functional level pre (relative) for feeders 70 / 120 kPa at 20 °C
Minimum functional level pme 50 / 100 kPa at 20 °C

Cable connec- Rated normal current Ir 8) 9) A 1250 1250 1250 1250

tion panel, A 2000 2000 2000 2000
metering A 2500 2500 2500 2500
panel A 2750 10) 2750 10) 2750 10) 2750 10)
A 3150 11) 3150 11) 3150 11) 3150 11)
Rated short-time withstand current Ik t k = 3 s up to kA 40 40 40 40
Rated peak withstand current Ip 5) up to kA 100 / 104 100 / 104 100 / 104 100 / 104
Rated functional level pre (relative) for feeders 70 / 120 kPa at 20 °C
Minimum functional level pme 50 / 100 kPa at 20 °C

8 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Technical data
Electrical data, functional level, temperature for single-pole and double-pole traction power supply switchgear

Common electri- Rated insulation level Rated voltage Ur kV 17.25 27.5

cal data, Nominal voltage according to IEC 60850 / EN 50163 kV 15 25
functional level
Rated short-duration power-frequency
and temperature
withstand voltage Ud:
– phase-to-earth, open contact gap kV 50 95
– across the isolating distance kV 60 110
Rated lightning impulse withstand voltage Up:
– phase-to-earth, open contact gap kV 125 200
– across the isolating distance kV 145 220 4)
Rated frequency fr Hz 16.7 50 / 60
Rated normal current Ir of the busbar 9) A 1250 1250
A 2000 2000
A 2500 2500
A 3150 3150
Rated functional level pre (relative) of the busbar 120 kPa at 20 °C
Minimum functional level pme 100 kPa at 20 °C
Ambient air temperature –5 °C to +55 °C 13)

Data of the switchgear panels

Circuit-breaker Rated normal current Ir 9) A 1250 1250
panel, disconnec- A 1600 1600
tor panel A 2000 2000
A 2500 2500
Rated short-time withstand current Ik tk = 3 s up to kA 31.5 31.5
Rated peak withstand current Ip 5) up to kA 80 80 / 82
Rated short-circuit making current Ima 5) up to kA 80 80 / 82
Rated short-circuit breaking current Isc up to kA 31.5 31.5
Electrical endurance of at rated normal current 20,000 operating cycles
vacuum circuit-breakers at rated short-circuit breaking current 50 breaking operations
Rated functional level pre (relative) for feeders 120 kPa at 20 °C
Minimum functional level pme 100 kPa at 20 °C

Bus sectionalizer Rated normal current Ir 9) A 1250 1250

A 2000 2000
A 2500 2500
Rated short-time withstand current Ik tk = 3 s up to kA 31.5 31.5
Rated peak withstand current Ip 5) up to kA 80 80 / 82
Rated short-circuit making current Ima 5) up to kA 80 80 / 82
Rated short-circuit breaking current Isc up to kA 31.5 31.5
Electrical endurance of at rated normal current 20,000 operating cycles
vacuum circuit-breakers at rated short-circuit breaking current 50 breaking operations
Rated functional level pre (relative) for feeders 120 kPa at 20 °C
Minimum functional level pme 100 kPa at 20 °C

Footnotes for pages 8 and 9

1) Higher values of the rated short-duration power-frequency with- 5) Higher value applies to 60 Hz
stand voltage available with: 6) Disconnector panel available for single-busbar switchgear 8DA10
- 42 kV for phase-to-earth and open contact gap, as well as 7) Bus coupler available for double-busbar switchgear 8DB10
- 48 kV across the isolating distance
8) Rated normal current I r for cable connection panels
2) Higher values of the rated short-duration power-frequency with-
9) Maximum permissible normal current dependent on ambient air
stand voltage available with:
temperature
- 65 kV for phase-to-earth and open contact gap, as well as
10) 2750 A without forced ventilation (8DB10 on request)
- 75 kV across the isolating distance
11) 3150 A with forced ventilation (8DB10 on request)
3) Higher values of the rated short-duration power-frequency with-
stand voltage available with: 12) Option: 30,000 operating cycles
- 95 kV for phase-to-earth and open contact gap, as well as 13) Option: Ambient air temperature –25 °C to +55 °C
- 120 kV across the isolating distance
4) Higher values of the rated lightning impulse withstand voltage
available with:
- 190 kV for phase-to-earth and open contact gap, as well as
- 230 kV across the isolating distance

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 9
 Technical data
Room planning

Wall-standing arrangement (top view) Free-standing arrangement (top view)

Room planning for single-busbar switchgear 8DA10

³100
HA35-2635 eps

1625
600 600

152 152

³ 800*
³ 100*** ³ 500**

Room planning for traction power supply switchgear 8DA11

³100
HA35-2639 eps

HA35-2640a eps

³800
865

600 600

152 152

885
³ 800*

³ 100*** ³ 500** 600 600

152 152

³800*
³100*** ³500**

Room planning for traction power supply switchgear 8DA12

³100
HA35-2637 eps

HA35-2638a eps

³800
1245

600 600
1265

152 152
³ 800*

³100*** ³500** 600 600

152 152
³800*

³100*** ³500**

10 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Technical data
Room planning

Wall-standing arrangement (top view) Free-standing arrangement (top view)

Room planning for double-busbar switchgear 8DB10

³100
HA35-2641 eps

HA35-2642a eps

³800
2665

2685
600 600

152 152
³ 800*

³100*** ³500** 600 600

152 152

³800*
³100*** ³500**

Switchgear installation
• Wall-standing arrangement without rear wall (IAC AFL)
• Free-standing arrangement without rear wall (IAC AFL)
• Free-standing arrangement with rear wall (IAC AFLR).

Room dimensions
See dimension drawings above.
Room height: ≥ switchgear height + 200 mm.
If there are any busbar components, the minimum room
height may have to be higher.
For switchable busbar components in 8DB10, free-standing
arrangement is required.
Door dimensions
The door dimensions depend on the dimensions of the
individual panels (see pages 14 to 21).
Switchgear fixing
• For floor openings and fixing points of the switchgear,
see pages 14 to 21
• Foundations:
– Steel girder construction
– Steel-reinforced concrete with foundation rails,
welded or bolted on.
Panel dimensions
*) Depending on national
See pages 14 to 21. requirements
**) Lateral wall distance ≥ 500 mm
optionally required on the left
or on the right
***) Lateral minimum wall distance
≥ 100 mm optionally possible
on the left or on the right

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 11
 Technical data
Shipping data

Transport Transport dimensions, transport weights 1)

Single-busbar switchgear 8DA10 Panel widths Transport dimensions Transport weight Transport weight
and traction power supply Width × Height × Depth with packing without packing
switchgear 8DA11/12 is deliv- mm mm × mm × mm approx. kg approx. kg
ered in transport units compris-
ing up to four panels.
Double-busbar switchgear Single-busbar switchgear 8DA10
8DB10 is delivered in transport Means of transport: Truck
units comprising up to three 1 × 600 1370 × 2550 × 1888 850 750
panels. 2 × 600 1764 × 2550 × 1870 1700 1500
Please observe the following:
3 × 600 2400 × 2550 × 1870 2550 2250
• Transport facilities on site
4 × 600 2964 × 2550 × 1870 3400 3000
• Transport dimensions and
transport weights Means of transport: Ship and airplane
• Size of door openings in 1 × 600 1388 × 2700 × 1888 850 750
building. 2 × 600 1764 × 2700 × 1888 1700 1500
3 × 600 2400 × 2700 × 1888 2550 2250
Packing
4 × 600 2964 × 2700 × 1888 3400 3000
• Means of transport: Truck
– Panels on pallets
– Open packing with PE Double-busbar switchgear 8DB10
protective foil. Means of transport: Truck
• Means of transport: Ship and 1 × 600 1370 × 2550 × 3124 1300 1200
airplane 2 × 600 1870 × 2550 × 3124 2600 2400
– Panels on pallets 3 × 600 2416 × 2550 × 3124 3900 3600
– In closed crates with sealed
Means of transport: Ship and airplane
upper and lower PE protective
foil 1 × 600 1388 × 2850 × 3124 1300 1200
– With desiccant bags 2 × 600 1888 × 2850 × 3124 2600 2400
– With sealed wooden base 3 × 600 2440 × 2850 × 3124 3900 3600
– Max. storage time: 6 months.
• Long-time packing
Traction power supply switchgear 8DA11/ 12
– Panels on pallets
– In closed crates with sealed, Means of transport: Truck
aluminum-coated PE 1 × 600 1370 × 2550 × 1888 600 500
protective foil 2 × 600 1764 × 2550 × 1870 1200 1000
– With desiccant bags 3 × 600 2400 × 2550 × 1870 1800 1500
– With sealed wooden base 4 × 600 2964 × 2550 × 1870 2400 2000
– Max. storage time:
Means of transport: Ship and airplane
12 months.
1 × 600 1388 × 2700 × 1888 600 500
2 × 600 1764 × 2700 × 1888 1200 1000
3 × 600 2400 × 2700 × 1888 1800 1500
4 × 600 2964 × 2700 × 1888 2400 2000

1) Average values based on standard subframe with LV compartment

850 mm depending on the degree to which panels are equipped

12 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Technical data
Classification

Classification of 8DA and 8DB switchgear according to IEC 62271-200

Design and construction
Partition class PM (metallic partition) 1)
Loss of service continuity category LSC2
Accessibility to compartments
(enclosure)
Busbar compartment Tool-based
Switching-device compartment Tool-based
Low-voltage compartment Tool-based
Cable compartment Tool-based
Internal arc classification
Designation of the internal
arc classification IAC
IAC class for:
Wall-standing arrangement IAC AFL 40 kA, 1 s
Free-standing arrangement IAC AFLR 40 kA, 1 s
Type of accessibility A Switchgear in closed electrical service location, access
“for authorized personnel only” according to IEC 62271-200
–F Front
–L Lateral
–R Rear (for free-standing arrangement)
Rated short-time withstand current 40 kA
Rated duration of short-circuit 1s

Classification of 8DA and 8DB switchgear according to IEEE Std C37.20.7 TM -2007
Internal arc classification
Designation of the internal arc classification
IAC
IAC class for:
Wall-standing arrangement Type 1B 40 kA, 0.5 s
Free-standing arrangement Type 2B 40 kA, 0.5 s
Type of accessibility Switchgear in closed electrical service location,
access “for authorized personnel only” according
to IEEE Std C37.20.7™-2007
– Type 1B Front
– Type 2B Front, lateral, rear (for free-standing arrangement)
– Type BC Front with open low-voltage compartment
Rated short-time withstand current 40 kA
Rated duration of short-circuit 0.5 s

1) Corresponds to ”metal-clad“ according to former standard IEC 60298

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 13
 Dimensions
Front views, sections, floor openings, fixing points for 8DA10

Circuit-breaker panel up to 3150 A

850
2350
HA35-2660d eps

275 380 380

600 1625

80 1145 80 320
45

70
600

405

320

45 210
1 2 3 4

Bus sectionalizer up to 3150 A

850
2350
HA35-2661d eps

275 380 380

600 600 1625

80 1145 80 320
45

70
600

405

320
140
600

405
45

45 210
1 2 3 4

14 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Maße
Front views, sections, floor openings, fixing points for 8DA10

Disconnector panel up to 3150 A Cable connection panel up to 3150 A

850

850
2350

2350
HA35-2740c eps

HA35-2741c eps
275 380 380 275 380 380
600 1625 600 1625

80 1145 80 320 80 1145 80 320

45

70

45

70
600

405

320

600

405

320
45 210 45 210
1 2 3 4 1 2 3 4

Metering panel Dummy panel

850
850

2350
2350
HA35-2664e eps

HA35-2665c eps

275 380 380 275 380 380

600 1625 600 1625

80 1145 80 320 80 1145 80 320

45

70
45

70

600

405

320
600

405

320

45 210 45 210
1 2 3 4 1 2 3 4

Legend and footnotes for pages 14 and 15

1 Fixing hole for 26 mm × 45 mm 3 Floor opening for high-voltage cables
2 Base frame 4 Area for fl oor openings for control cables

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 15
 Dimensions
Front views, sections, floor openings, fixing points for 8DB10

Circuit-breaker panel up to 2500 A

850
2350
HA35-2667b eps

275 360 360 360 360 360

600 2665

80 2185 80 320
45

70
600

410

320
45 210
1 2 3 4

Bus coupler up to 2500 A

850
2350
HA35-2669c eps

275 360 360 360 360 360

600 2665

80 2185 80 320
45

70
600

410

320

45 210
1 2 3 4

16 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Dimensions
Front views, sections, floor openings, fixing points for 8DB10

Bus sectionalizer up to 2500 A (busbar system 1 and 2)

850
2350
HA35-2668c eps

275 360 360 360 360 360

600 600 2665

80 2185 80 320
45

70
600

410

320
140
600

410
45

45 210
1 2 3 4

Bus sectionalizer with panel connection up to 2500 A (busbar system 1 and 2)

850
2350
HA35-2673d eps

275 360 360 360 360 360

600 600 2665

80 2185 80 320
Legend and footnotes
45

70

for pages 16 and 17

1 Fixing hole for
600

410

320

26 mm × 45 mm
2 Base frame
3 Floor opening for
45 210
high-voltage cables
1 2 3 4
4 Area for fl oor openings
for control cables

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 17
 Dimensions
Front views, sections, floor openings, fixing points for für 8DB10

Bus sectionalizer up to 2500 A (busbar system 1)

850
2350
HA35-2674c eps

275 360 360 360 360 360

600 600 2665

80 2185 80 320
45

70
600

410

320
140
600

410
45

45 210
1 2 3 4
Bus sectionalizer up to 2500 A (busbar system 2)
850
2350
HA35-2675c eps

275 360 360 360 360 360

600 600 2665

80 2185 80 320
45

70
600

410

320
140
600

410
45

45 210
1 2 3 4

18 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Dimensions
Front views, sections, floor openings, fixing points for 8DB10

Cable connection panel up 2500 A

850
2350
HA35-2748d eps

275 360 360 360 360 360

600 2665

80 2185 80 320
45

70
600

410

320
45 210
1 2 3 4

Dummy panel
850
2350
HA35-2672b eps

275 360 360 360 360 360

600 2665

80 2185 80 320
45

70

Legend and footnotes

for pages 18 and 19
600

410

320

1 Fixing hole for

26 mm × 45 mm
2 Base frame
45 210
1 2 3 4 3 Floor opening for
high-voltage cables
4 Area for fl oor openings
for control cables

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 19
 Dimensions
Front views, sections, floor openings, fixing points for 8DB10 ANSI

Example: Circuit-breaker panel

with three-position disconnector
at the feeder (option)

1200
3120
HA35-2749d eps

275 360 360 360 360 360

600 2665

80 2185 80 320
45

70
600

410

320

45 210
1 2 3 4

Example: Circuit-breaker panel

with disconnector bypass
1200
3120
HA35-2750d eps

275 360 360 360 360 360

600 2665

80 2185 80 320
45

70
600

410

320

45 210
1 2 3 4

20 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Dimensions
Front views, sections, floor openings, fixing points for 8DA11/12

Single-pole circuit-breaker panel up to 2500 A

850
2350
HA35-2677d eps

275
600 865

80 385 80 320
45

70
600

405

320

45 210
1 2 3 4

Double-pole circuit-breaker panel up to 2500 A

850
2350
HA35-2676d eps

275 380
600 1245

80 765 80 320
45

70
600

405

320

Legend and footnotes

for pages 20 and 21
45 210 1 Fixing hole for
1 2 3 4 26 mm × 45 mm
2 Base frame
3 Floor opening for
high-voltage cables
4 Area for fl oor openings
for control cables

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 21
 Product range
Single-busbar panels 8DA10

Circuit-breaker panel Disconnector panel

Three-position
disconnector

Vacuum
circuit-breaker

Plug-in voltage
transformer (directly
plugged or with
cable connection)

Voltage transformer
with or without
three-position dis-
connector

Current transformer

Capacitive voltage
detecting system
HA35-2643a eps

HA35-2644a eps

C C

D D
Busbar
– earthing switch
and
– make-proof
Bus sectionalizer (2 panels) earthing switch

Busbar connection
with or without
three-position
disconnector

Surge arrester

Panel connection
with inside-cone plug
or bar connection

Zero-sequence
current transformer
HA35-2645a eps

B Top-mounted bus
sectionalizer

22 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Product range
Single-busbar panels 8DA10

Metering panel Cable connection panel

Three-position
disconnector

Vacuum
circuit-breaker

Plug-in voltage
transformer (directly
plugged or with
cable connection)

Voltage transformer
with or without
three-position dis-
connector
HA35-2647a eps
HA35-2646 eps

D
Current transformer

Capacitive voltage
detecting system

Bus sectionalizer (2 panels)

Busbar
– earthing switch
and
– make-proof
earthing switch

Busbar connection
with or without
three-position
disconnector

Panel connection
with inside-cone plug
or bar connection
HA35-2648a eps

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 23
 Product range
Double-busbar panels 8DB10

Circuit-breaker panel Bus coupler

Three-position
disconnector

Vacuum
circuit-breaker

Plug-in voltage
transformer (directly
plugged or with
cable connection)

Voltage transformer
with or without
B three-position dis-
connector

Current transformer

Capacitive voltage
detecting system

C
Busbar
D
– earthing switch
and
– make-proof
earthing switch

Busbar connection
with or without
three-position
disconnector
HA35-2649a eps

HA35-2650a eps

Surge arrester

Panel connection
with inside-cone plug
or bar connection

Zero-sequence
current transformer

Top-mounted bus
sectionalizer

24 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Product range
Double-busbar panels 8DB10

Metering panel Cable connection panel

Three-position
disconnector

Plug-in voltage
transformer
(directly plugged)

Voltage transformer
with or without
three-position dis-

HA35-2653a eps
connector

Current transformer

Capacitive voltage
detecting system

Busbar
– earthing switch
and
– make-proof
earthing switch
HA35-2652 eps

Busbar connection
with or without
three-position
disconnector

Panel connection
with inside-cone plug
or bar connection

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 25
 Product range
Double-busbar panels 8DB10

Bus sectionalizer (busbar system 1 and 2)

Three-position
disconnector

Vacuum
circuit-breaker

Voltage transformer
with or without
three-position dis-
connector

Current transformer

Capacitive voltage
detecting system

Busbar
– earthing switch
and
– make-proof
earthing switch

B
C
D
Busbar connection
with or without
three-position
disconnector
HA35-2656a eps

B
C
D
Panel connection
with inside-cone plug
or bar connection

Zero-sequence
current transformer

26 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Product range
Double-busbar panels 8DB10

Bus sectionalizer (busbar system 1)

Three-position
disconnector

Vacuum
circuit-breaker

Voltage transformer
with or without
three-position dis-
connector

Current transformer

Capacitive voltage
detecting system

Busbar
– earthing switch
and
– make-proof
earthing switch

Busbar connection
with or without
three-position
disconnector
HA35-2654a eps

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 27
 Product range
Double-busbar panels 8DB10

Bus sectionalizer (busbar system 2)

Three-position
disconnector

Vacuum
circuit-breaker

Voltage transformer
with or without
three-position dis-
connector

Current transformer

Capacitive voltage
detecting system

Busbar
– earthing switch
and
– make-proof
earthing switch

Busbar connection
with or without
three-position
disconnector
HA35-2655a eps

28 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Product range
Double-busbar panels 8DB10

Bus sectionalizer (busbar system 1 and 2)

Three-position
disconnector

Vacuum
circuit-breaker

Voltage transformer
with or without
three-position dis-
connector

Current transformer

Capacitive voltage
detecting system

Busbar
B – earthing switch
and
– make-proof
earthing switch

Busbar connection
with or without
three-position
disconnector
HA35-2651b eps

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 29
 Product range
Double-busbar panels 8DB10

Bus sectionalizer (busbar system 1 and 2)

Three-position
disconnector

Voltage transformer
with or without
three-position dis-
connector

Current transformer

Capacitive voltage
detecting system

Busbar
– earthing switch
and
– make-proof
earthing switch

Busbar connection
with or without
three-position
disconnector
HA35-2659b eps

30 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Product range
Single-pole and double-pole single-busbar panels 8DA11/12

Single-pole circuit-breaker panel Double-pole circuit-breaker panel

Three-position
disconnector

Vacuum
circuit-breaker

Plug-in voltage
transformer (directly
plugged or with
cable connection)

Voltage transformer
with or without
three-position dis-
connector

Current transformer

Capacitive voltage
detecting system
HA35-2657a eps

C C

D D
Busbar
– earthing switch
and
– make-proof
earthing switch

Busbar connection
with or without
three-position
disconnector
HA35-2658a eps

Surge arrester

Panel connection
with inside-cone plug
or bar connection

Zero-sequence
current transformer

Top-mounted bus
sectionalizer

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 31
 Design
Basic panel design

Insulating system
• Switchgear housing filled with Panel design (examples)
SF6 gas
• Features of SF6 gas:
– Non-toxic
– Odorless and colorless Legend for 8DA10 and
– Non-inflammable 8DB10
– Chemically neutral 1 Low-voltage
– Heavier than air 1 compartment
– Electronegative (high-quality insula- 2 Electronic control board,
tor) e.g. multifunction
– GWP (Global Warming Potential) 2 protection
= 22,800 3 Operating mechanism
• Pressure of the SF6 gas in the switch- and interlock for three-
3
gear housing dependent on the position disconnector,
electrical ratings (relative pressure as well as mechanical
at 20 °C): 4 position indicators
– Rated functional level (relative): for three-position
70 kPa to 120 kPa disconnector and
– Design pressure: 190 kPa 5 circuit-breaker
– Design temperature of the SF6 gas: 4 Manometer for gas
90 °C monitoring of feeder

HA35-2682d eps
– Operating pressure of bursting disc: gas compartments
≥ 300 kPa 5 Circuit-breaker operating
– Bursting pressure: ≥ 600 kPa 6 mechanism
– Gas leakage rate: < 0.1 % per year. 6 Voltage detecting system

Panel design
• Factory-assembled, type-tested
• Single-pole metal-enclosed,
with metallic partitions 1)
• Hermetically bolted switchgear 8DA10
housings made of corrosion-resistant Panel for single-busbar switchgear
aluminum alloy
• Switchpanel poles arranged one
behind the other
• Maintenance-free in an indoor
environment (IEC 62271-1)
• Degree of protection
– IP 65 for all high-voltage parts of 1
the primary circuit
– IP 3XD for the switchgear enclosure
• Option: IP 31D for the switchgear 2
enclosure
• Option: IP 41 for the low-voltage 4
compartment
• Vacuum circuit-breaker
• Three-position disconnector for 3
disconnecting and earthing
HA35-2685d eps

• Make-proof earthing by means of the

5
vacuum circuit-breaker
• Cable connection with inside-cone
plug-in system according to EN 50181
• Wall-standing or free-standing
arrangement 6
• Instrument transformers removable,
located outside the gas compart-
ments
• Subframe, front cover, rear cover and
end walls powder-coated in color
“light basic” (SN 700)
• Low-voltage compartment 8DB10
removable, plug-in bus wires Panel for double-busbar switchgear
• Standardized production processes
and certified quality and environ-
mental management system accord-
ing to ISO 9001 and ISO 14001.
1) Corresponds to ”metal-clad“ according to
former standard IEC 60298

32 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Design
Basic panel design

Single-pole and double-pole design

for AC traction power supply Panel design (examples)

Typical uses
• Single-pole and double-pole panels
Legend for 8DA11
8DA11/12 for the supply of over-
and 8DA12
head contact line sections in AC
1 Low-voltage
traction power supply systems 1 compartment
• Double-pole panels 8DA12 for ap- 2 Electronic control board,
plication in traction power supply e.g. multifunction
systems with autotransformers, 2 protection
e.g. for high-speed railway traffic. 3 Operating mechanism
and interlock for three-
3
Panel design position disconnector,
• Panel design based on standard as well as mechanical
version of single-busbar switchgear 4 position indicators
8DA10. for three-position
disconnector and
8DA11 5 circuit-breaker
Single-pole switchgear panel for 4 Manometer for gas
monitoring of feeder
traction power supply.
gas compartments
8DA12 5 Circuit-breaker operating
6

HA35-2684d eps
Double-pole switchgear panel for mechanism
traction power supply. 6 Voltage detecting system

8DA11
Single-pole switchgear panel for traction power supply

5
HA35-2683d eps

8DA12
Double-pole switchgear panel for traction power supply

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 33
 Design
Gas compartment scheme of 8DA10

Gas compartment scheme

Arrangement of gas compartments in 8DA10
• Sealed pressure system (according
to IEC 62271-1)
• No refilling required throughout
the entire service life
• Gas compartments distributed to
several areas
• Simple, visual check of the ready-
for-service indicator by red/green 3 2 1
indication areas
• Indication of gas pressure also
guaranteed without auxiliary 4 4 4
voltage supply
• Gas pressure manometers arranged
at the switchgear front
• Gas filling equipment with non- Bushing
HA35-2718d eps

return valve arranged at the switch- pervious to gas

gear front beside the associated
Gas-tight
gas pressure manometer
bushing
• Gas pressure manometers with two
Single-busbar panel 8DA10
signaling contacts for “gas pressure
too low / gas pressure too high”
indication
• Option: Gas pressure manometers
with three signaling contacts for
“gas pressure too low / very low”
and “gas pressure too high” indica- 5
tion
• Option: Gas pressure manometers 1, 2, 3 1, 2, 3 1, 2, 3
with temperature and pressure
compensation.

Example: Gas quantity circuit-breaker

panel (36 kV, 40 kA, 1250 A, cable 4
connection 1 × plug size S2)
• 8DA10:
SF6 = 2.5 kg
HA35-2720a eps

CO2e = 57 t
• 8DB10:
SF6 = 4.5 kg
CO2e = 105 t. Single-busbar switchgear 8DA10

Legend for 8DA10

1 Busbar L1 (manometer B11)
2 Busbar L2 (manometer B12)
3 Busbar L3 (manometer B13)
4 Circuit-breaker L1, L2, L3 (manometer B0)
5 Top-mounted bus sectionalizer L1, L2, L3
(manometer B15)

34 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Design
Gas compartment scheme of 8DB10

Arrangement of gas compartments in 8DB10

6 3 5 2 4 1

8 7 8 7 8 7

9 9 9

Bushing
HA35-2719b eps

pervious to gas

Gas-tight
bushing
Double-busbar panel 8DB10

11
10

4, 5, 6 4, 5, 6 4, 5, 6
1, 2, 3 1, 2, 3 1, 2, 3

9
HA35-2721c eps

Double-busbar switchgear 8DB10

Legend for 8DB10

1 Busbar system 1, L1 (manometer B11)
2 Busbar system 1, L2 (manometer B12)
3 Busbar system 1, L3 (manometer B13)
4 Busbar system 2, L1 (manometer B21)
5 Busbar system 2, L2 (manometer B22)
6 Busbar system 2, L3 (manometer B23)
7 Three-position disconnector, busbar system 1, L1, L2, L3
(manometer B1)
8 Disconnector, busbar system 2, L1, L2, L3 (manometer B2)
9 Circuit-breaker L1, L2, L3 (manometer B0)
10 Top-mounted bus sectionalizer, busbar system 1, L1, L2, L3
(manometer B15)
11 Top-mounted bus sectionalizer, busbar system 2, L1, L2, L3
(manometer B25)

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 35
 Components
Vacuum circuit-breaker

Features
• According to IEC 62271-100 (for standards, see page 58)
• Application in hermetically bolted switchgear housings
in conformity with the system
• Vacuum interrupter in gas-filled switchgear housing

R-HA35-138.tif
• Maintenance-free for indoor installation according to
IEC 62271-1
• Individual secondary equipment
• A metal bellows is used for gasketless separation between
the gas insulation and the vacuum (already used with suc-
cess for over 5 million vacuum interrupters).
Trip-free mechanism
The vacuum circuit-breaker is fitted with a trip-free
mechanism according to IEC 62271-100.
14
Switching duties and operating mechanisms
The switching duties of the vacuum circuit-breaker are 1
dependent, among other factors, on its type of operating 13
2
mechanism.
Motor operating mechanism 12 3
• Motor-operating stored-energy mechanism 11 4
– For auto-reclosing (K) 10
– For synchronization and rapid load transfer (U) 5

Further operating mechanism features

• Located outside the switchgear housings in the operat- 9
ing mechanism box and behind the control board 6
• Stored-energy spring mechanism for 10,000 operating 8
cycles
7
• Optional: Stored-energy spring mechanism for 30,000
operating cycles. Circuit-breaker operating mechanism 3AH49
for 8DA and 8DB
Operating mechanism functions
Motor operating mechanism 1) (M1 *)
In the case of motor operating mechanism, the closing 1 ON pushbutton
spring is charged by means of a motor and latched in the 2 Auxiliary switch S1
charged position (“spring charged” indication is visible). 3 Closing coil for CLOSE
Closing is effected either by means of an ON pushbutton or 4 Tripping coil for OPEN
a closing solenoid. The closing spring is recharged automati- 5 OFF pushbutton
cally (for auto-reclosing). 6 Operating shaft for circuit-breaker
7 Opening spring
Endurance class of circuit-breaker 8 Operations counter
9 Position indicator for circuit-breaker
Function Class Standard Property of 8DA and 8DB
10 “Closing spring charged / not charged” indicator
BREAKING M2 IEC 62271-100 10,000 times mechanically 11 Auxiliary switch
without maintenance
12 Closing spring
E2 IEC 62271-100 10,000 times rated normal cur- 13 Gear with hand crank coupling
rent without maintenance 14 Rating plate
50 times short-circuit breaking
current without maintenance
C2 IEC 62271-100 Very low probability of restrikes
Operating times
Closing time Closing solenoid < 95 ms
Opening time 1st shunt release < 65 ms Abbreviations for switching duties:
2nd shunt release < 55 ms U = Synchronization and rapid load transfer
Undervoltage release < 55 ms K = Auto-reclosing
Arcing time at 50 Hz < 15 ms 1) Motor rating at 24 V to 250 V DC: max. 500 W
at 60 Hz < 12 ms 110 V and 240 V AC: max. 650 VA
Break time at 50 Hz 1st shunt release < 80 ms * Item designation
2nd shunt release < 70 ms
For further technical data and description of
Undervoltage release < 70 ms
typical applications, please refer also to Catalog HG 11.04
Dead time 300 ms “3AH4 Vacuum Circuit-Breakers”
Total charging time < 15 s

36 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Vacuum circuit-breaker

Secondary equipment
The scope of the secondary equipment of the vacuum Operating cycle diagram
circuit-breaker depends on the type of application and
offers a wide range of possible variations, allowing almost
every requirement to be satisfied. 50 000

HA35-2678_en eps
30 000
Closing solenoid 20 000

Permissible operating cycles

• Type 3AY15 10 (Y9 *) 10 000
• For electrical closing. 5000

Shunt releases 2000

• Types: 1000
– Standard: 3AY15 10 (Y1 *)
500
– Option: 3AX11 01 (Y2 *), with energy store
• Tripping by protection relay or electrical actuation. 200

100
Undervoltage release
50
• Type 3AX11 03 (Y7 *)
1 2 3
• Comprising: 20
– Energy store and unlatching mechanism 10
– Electromagnetic system, which is permanently connect- 1 2 5 10 kA 20 31.5 50
ed to voltage while the vacuum circuit-breaker is closed; 25 40
Breaking current (r.m.s. value)
tripping is initiated when this voltage drops
• Connection to voltage transformers possible.
Examples
Anti-pumping
Electrical data (curve 1)
• Function: If constant CLOSE and OPEN commands are Rated short-circuit breaking current 25 kA
present at the vacuum circuit-breaker at the same time, Rated normal current 1250 A
the vacuum circuit-breaker will return to the open posi- Electrical data (curve 2)
tion after closing. It remains in this position until a new Rated short-circuit breaking current 31.5 kA
CLOSE command is given. In this manner, continuous Rated normal current 2000 A
closing and opening (= pumping) is avoided. Electrical data (curve 3)
Rated short-circuit breaking current 40 kA
Circuit-breaker tripping signal
Rated normal current 2500 A
• For electrical signaling (as pulse > 10 ms), e.g. to remote Rated operating sequences
control systems, in the case of automatic tripping Rapid load transfer (U): O-t-CO-t‘-CO (t = 0.3 s, t‘ = 3 min)
(e.g. protection) Auto-reclosing (K): O-t-CO-t‘-CO (t = 0.3 s, t‘ = 3 min)
• Via limit switch (S6 *) and cutout switch (S7 *). Auto-reclosing (K): O-t-CO-t‘-CO (t = 0.3 s, t‘ = 15 s)

Varistor module O = OPEN operation

• To limit overvoltages to approx. 500 V for protection CO = CLOSE operation with subsequent OPEN operation at
the shortest internal close-open time of the vacuum
devices (when inductive components are mounted in the
circuit-breaker
vacuum circuit-breaker)
• For auxiliary voltages ≥ 60 V DC.

Auxiliary switch
Possible release combinations
• Type 3SV9 (S1 *)
Release
• Standard: Up to 22 NO + 22 NC.
1 2 3 4 5
Position switch 1st shunt release type type 3AY15 10 • • • • •
2nd shunt release type type 3AX11 01 – • • – •
• Type 3SE4 (S4 *)
3rd shunt release type 3AX11 01 – – • – –
• For signaling “closing spring charged“.
Undervoltage release type 3AX11 03 – – – • •
Mechanical interlock
• Mechanical interlocking to the three-position disconnector
• During operation of the three-position disconnector,
the vacuum circuit-breaker cannot be operated.

Abbreviations: NO = normally open contact,

NC = normally closed contact * Item designation

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 37
 Components
Three-position disconnector

Features
• Rated normal currents up to 3150 A Position indicators of 8DA10
• 2000 operating cycles for the disconnector for three-position disconnector
(higher operating cycles on request) and vacuum circuit-breaker
• 1000 operating cycles for the earthing switch
(higher operating cycles on request)
• Option: Up to 2000 operating cycles for the earthing
switch -Q1
• Operating shaft and contact blades with common center
of rotation and reliable switch position up to the operat-
ing front of the panel -Q0

HA35-2723b eps
• Gas-tight bushings separate the busbar and circuit-
breaker housings underneath the busbar disconnector
contacts
• Cable connection and circuit-breaker housings can be Feeder OPEN
removed without interrupting busbar operation
• Maintenance-free.
Switch positions
-Q1
• CLOSED, OPEN, EARTHED or READY-TO-EARTH
• CLOSED: Contact blades connected with the busbar:
Main circuit closed between busbar and circuit-breaker
HA35-2724b eps -Q0
• OPEN: Main circuit open between busbar and circuit-
breaker: Test voltages for isolating distances are with-
stood
• READY-TO-EARTH: Contact blades connected with the
earthing contact Feeder CLOSED
• EARTHED: Feeder earthed and short-circuited by closing
the circuit-breaker.
Operating mechanism -Q1
• Only permissible operations possible due to logical
mechanical interlocks
• Mechanically coupled position indicator -Q0
HA35-2726b eps

• Separate operating shafts for the “DISCONNECTING”,

“EARTHING” and “READY-TO-EARTH” functions
• With manual operating mechanism
• Option: With motor operating mechanism Feeder READY-TO-EARTH
Motor rating at 24 V to 250 V DC: max. 100 W
110 V to 240 V AC: max. 130 VA
• Same sense of rotation for the switching operations of
the “CLOSE” or “OPEN” functions. -Q1

Endurance class of three-position disconnector

-Q0
HA35-2725b eps

Function Class Standard Property of 8DA and 8DB

DISCONNECTING M1 IEC 62271-102 2000 times mechanically
without maintenance
READY-TO-EARTH 1000 times mechanically
Feeder EARTHED
without maintenance
EARTHING E2 1) IEC 62271-102 50 times rated short-circuit
making current Ima without
maintenance

Endurance class of make-proof earthing switch

Function Class Standard Property of 8DA and 8DB
EARTHING E1 IEC 62271-102 1000 times mechanically
without maintenance
2 times rated short-circuit
making current Ima without
maintenance

1) By closing the circuit-breaker

38 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Three-position disconnector

Interlocks
Position indicators of 8DB10
• Selection of permissible switching for three-position disconnector
operations by means of a control and vacuum circuit-breaker
gate with mechanically interlocked
vacuum circuit-breaker
• Selection of permissible switching
operations in double-busbar
-Q1 -Q2
switchgear additionally by means
of a control gate with mechanically
interlocked vacuum circuit-breaker -Q0

HA35-2727b eps
• Corresponding operating shafts are
not released at the operating front
until they have been pre-selected
with the control gate Feeder OPEN
• Operating lever cannot be removed
until switching operation has been
completed -Q1 -Q2
• Circuit-breaker cannot be closed
until the control gate is in neutral
position again -Q0
HA35-2728b eps

• Option: Switchgear interlocking

system with electromechanical
interlocks (mechanical interlocking
for manual operation remains). Feeder busbar system 1 CLOSED

-Q1 -Q2

-Q0
HA35-2729b eps

Feeder busbar system 2 CLOSED

-Q1 -Q2

-Q0
HA35-2730b eps

Feeder READY-TO-EARTH

-Q1 -Q2

-Q0
HA35-2731b eps

Feeder EARTHED

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 39
 Components
Control board

Features
• Mechanical control board below the Single-busbar panels 8DA10
low-voltage compartment 10
A
• Actuations directly at the operating 1
mechanisms 2
4
• Mechanical position indicators 3
integrated in the switchgear front 5
6
• Unambiguous assignment of
actuating openings and control ele-
ments to the corresponding B
position indicators
• Ergonomic height of all control ele- 11
ments.
12
Interlocking 15 13
• Panel-internal mechanical interlocks 16 14
• Operation of three-position discon-
17
nector (CLOSED, OPEN, EARTHED or
READY-TO-EARTH)
R-HA35-139.tif
• Vacuum circuit-breaker interlocked
Double-busbar panels 8DB10
mechanically
• Control gate for opening the actuat-
A
ing openings (with single-busbar
systems it can only be operated if 1 10
the interrogation lever (4) is pushed
5 7
downwards) 3 8
• Actuating openings (2, 3 and 8) 6
cannot be opened as long as the 2
9
vacuum circuit-breaker is in CLOSED
position
• Operating lever can be inserted B
when the actuating openings are 11
open
• Operating lever cannot be removed 12
before the definite end position 15 13
of the disconnecting or earthing 16 14
function is reached
17
• Feeder de-earthing is secured by the
vacuum circuit-breaker R-HA35-140.tif
– electrically via the auxiliary switch
A Operating mechanism of the three-position disconnector
– mechanically through the lever (14)
1 CLOSED/OPEN position indicator for disconnecting function of three-position disconnector
of the mechanical circuit-breaker 2 Actuating opening for earthing function
tripping block. 3 Actuating opening for disconnector function
4 Interrogation lever
5 CLOSED/OPEN position indicator for earthing function of three-position disconnector
6 CLOSED/OPEN position indicator for vacuum circuit-breaker
7 CLOSED/OPEN position indicator for 2nd disconnector in double-busbar systems
8 Actuating opening for 2nd disconnector in double-busbar systems
9 Selector gate for selecting the three-position disconnector or the disconnector in
double-busbar systems
10 Control gate for opening the actuating openings (with single-busbar systems it can
only be operated if the interrogation lever (4) is pushed downwards)
B Operating mechanism of the vacuum circuit-breaker
11 Mechanical ON pushbutton for vacuum circuit-breaker
12 Actuating opening for manual charging of the circuit-breaker operating spring
13 Mechanical OFF pushbutton for vacuum circuit-breaker
14 Lever for locking the vacuum circuit-breaker against “de-earthing”
15 “Circuit-breaker spring charged” indicator
16 CLOSED/OPEN position indicator for vacuum circuit-breaker
17 Operations counter for vacuum circuit-breaker

40 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Busbar, busbar components

Busbar features
• Single-pole enclosure with Busbar versions
modular switchgear housings
made of corrosion-resistant
aluminum alloy
• Continuous gas insulation

HA35-2686a eps

HA35-2757 eps
without plug-in connections
or adapters
• No alteration of the insulating
medium throughout the com- Busbar version up to 3150 A Busbar version 4000 A
plete busbar assembly Example 8DA10 Example 8DA10
• Up to 4000 A with copper bar
connection in one busbar
housing
• 5000 A with copper bar
connection in two busbar
housings (twin busbar).

Design of busbar components

The busbars of single-busbar

HA35-2687a eps
HA35-2688a eps

switchgear 8DA and double-

busbar switchgear 8DB can be
equipped with the following
busbar components: Busbar version 5000 A Busbar version 5000 A
• Plug-in, metal-enclosed (twin busbar) (twin busbar)
busbar voltage transformers Example 8DB10 Example 8DA10
with or without three-position
disconnector
• Busbar current transformers
• Busbar connection with cable Busbar components
plug, or with solid-insulated or
gas-insulated bar connection,
with or without three-position
disconnector
• Busbar earthing switch or
make-proof earthing switch
• Capacitive voltage detecting
system according to
IEC 61243-5 or IEC 61958
HA35-2689a eps

HA35-2690a eps

• Top-mounted bus sectional-

izer for distribution into two
busbar sections without
additional switchgear panels
Busbar connection with cable plug Busbar connection with solid-
and space requirements.
size S2 or size S3 insulated or gas-insulated bar
HA35-2693a eps

Top-mounted bus sectionalizer

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 41
 Components
Current transformers

Features
Current transformers
• According to IEC 61869-2
• Designed as ring-core current
transformers, single-pole
• Free of dielectrically stressed
cast-resin parts (due to
design)
E
• Insulation class E
• Inductive type
• Certifiable
• Climate-independent
• Secondary connection by
means of a terminal strip in
C C
the low-voltage compart-
ment of the panel
• Cast-resin insulated.
HA35-2694b eps

HA35-2695b eps
Installation D
• Arranged outside the
primary enclosure
(switchgear housing).
B Current transformer in bus sectionalizer
and bus coupler (type 4MC4_40)
C Feeder current transformer
(type 4MC4_90)
D Feeder current transformer
(type 4MC4_10)
E Busbar current transformer
(type 4MC4_40)
B
HA35-2756a eps

Current transformer installation (basic scheme)

Electrical data *
Designation Type 4MC4 Designation Type 4MC4
Operating voltage max. 0.8 kV Multiratio (secondary) 200 A – 100 A
Rated short-duration power- 3 kV up to 3150 A –
frequency withstand voltage 1575 A
(winding test)
Core data according max. 3 cores
Rated frequency 50 / 60 Hz to rated primary current:
Rated continuous max. 1.2 × Measuring core
thermal current rated current Rating 2.5 VA to 30 VA
(primary) Class 0.2 to 1
Overcurrent FS 5, FS 10
factor
Rated thermal max. 40 kA Protection core
short-time current, Rating 2.5 VA to 30 VA
max. 3 s Class 5 P or 10 P
Rated current dynamic unlimited Overcurrent 10 to 30
primary 40 A to factor
3150 A Permissible ambient max. 60 °C
secondary 1 A and 5 A air temperature
Insulation class E

* Further electrical data on request

42 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Voltage transformers

Features
Voltage transformers
• According to IEC 61869-3
• Single-pole, plug-in design
• Connection system with 3
plug-in contact according
1
to EN 50181
• Inductive type
• Safe-to-touch due to metal
enclosure
• Certifiable
• Climate-independent
• Secondary connection by
means of plugs in the low-
voltage compartment of the
panel
• Cast-resin insulated.

Installation
• Arranged outside the
primary enclosure (switch- 4
gear housing).

HA35-2733b eps
HA35-2732c eps

Mounting locations 2
• On the busbar
• At the panel connection
housing.
Voltage transformer installation (basic scheme)
Voltage transformer types
Busbar voltage transformers 1 Busbar voltage transformer 4MU4 3 Busbar voltage transformer 4MU4 with
4MT3 and 4MU4 2 Feeder voltage transformer 4MT7 three-position disconnector
• Pluggable on the busbar with (connection at panel connection 4 Feeder voltage transformer 4MU3
plug-in system according to housing) (not in the panel, connection via flex-
EN 50181 ible cable with plug size S2 at the panel
• No separate metering panel connection housing, and metal-enclosed
required voltage transformer)

• Option: Three-position dis-

connector for busbar
voltage transformer CLOSED
– OPEN – EARTHED
• Option 4MU4: Repeat test at
80 % of the rated short-
Electrical data (maximum values)
duration power-frequency
Designation 4MT3 4MU4 4MT7 4MU3
withstand voltage possible
Rated voltage kV 24.0 40.5 40.5 40.5
with mounted voltage trans-
Rated short-duration 65 95 95 95
former. power-frequency
withstand voltage kV
Feeder voltage transformers Rated lightning impulse 125 200 200 200
4MT7 and 4MU3 withstand voltage kV
• Pluggable at the feeder with Rated voltage factor Un /8h = 1.9 Un /8h = 1.9 Un /8h = 1.9 Un /8h = 1.9
plug-in system according to Un / continuous Un / continuous Un / continuous Un / continuous
= 1.2 = 1.2 = 1.2 = 1.2
EN 50181
Standard IEC IEC IEC IEC
• Connection of 4MT7 directly
GOST GOST GOST GOST
at the panel connection
GB GB GB GB
housing
• Connection of 4MU3 via
flexible cable with plug size
S2 at the panel connection
housing, and metal-enclosed
voltage transformer.

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 43
 Components
Panel connection

Features Panel connection of 8DA10, 8DB10 and 8DA11/12 for cable plugs and bar systems
• Bushings for plugs with
inside-cone plug-in system
according to EN 50181
• Inside-cone plug-in system
for plug sizes 2, 3 and 4
• Single and multiple connec- 1 1 1
tions possible per phase
2 2 2
• Connection of several cables
with different plug sizes pos-

HA35-2696a eps

HA35-2701a eps
HA35-2697c eps
sible per phase
h

h
h
• Connection of solid-insulated
or gas-insulated bar possible
• Connection of 4MT7 voltage
transformer plugged in at the
panel connection housing
version 3
• Connection of 4MU3 voltage
transformer via flexible cable Version 1 Version 2 Version 3
and plug size 2 at the panel
connection housing
S2 S3 S2 S3 4MT7 Solid-
• For rated normal currents up
insulated
to 3150 A. bar con-
nection
Surge arresters
1 1 1 1 – –
• Pluggable via inside-cone
2 – – –
plug-in system size 2 or 3
3 – – –
• Surge arresters recommended – 2 – –
if, at the same time, – 3 – –
– the cable system is directly 1 2 – –
connected to the overhead 1 – 1 –
line, 2 – 1 –
– the protection zone of the – 1 1 –
surge arrester at the end – 2 1 –
tower of the overhead line 1 1 1 –
does not cover the switch- – – 1 1
gear. 1 – – 1
2 1 – –

Switch- Rated normal

Standard High
gear current Connection height of panel connection versions (mm)
subframe subframe
type [A]
8DA10 X 320 240 275 240.5
8DA11 up to 3150
8DA12 X 540 460 495 460.5

up to X 120 40 75 40.5
8DB10
2500 1) X 540 460 495 460.5

Legend
1 Panel connection housing
2 Subframe
h Connection height of panel connection versions

1) 3150 A on request

44 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Panel connection

Panel connection of 8DA10, 8DB10 and 8DA11/12 for cable plugs and bar systems

1 1 1 1

2 2 2 2

HA35-2705b eps
HA35-2702a eps

HA35-2706b eps
HA35-2703a eps

h
h
h

Version 4 Version 5 Version 6 Version 7

S2 S3 S2 S3 S4
Solid-insulated Solid-insulated Gas-insulated
bar connection bar connection bar connection

4 – – – – 1 1 1
5 – – 1 – 1
6 – – 2 – 1
– 4 – – 1 1
1 3 – 1 1 1
1 4 – – – 2
2 2 – – 2 1
2 3 –
3 1 –
3 2 –
4 1 –
2 – 1
– 1 1
– 2 1
1 1 1

Connection height of panel connection versions (mm)

222 219 -15 290 327

442 439 205 510 547
22 19 -215 90 127
442 439 205 510 547

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 45
 Components
Panel connection (commercially available cable plugs and bar connections)

Busbar and panel connection (commercially available cable plugs)

Cable type Cable sealing end Remark
Make Type Size Diameter across Conductor
cable insulation cross-
mm section
mm2
Thermoplastic-insulated cables ≤ 12 kV according to IEC 60502-2
Single-core cable or nkt cables CPI 2 2 12.7 - 33.6 25 - 300 Insulation material silicone rubber, with or without
three-core cable, CPI 3 3 21.2 - 45.6 185 - 630 metal housing, installation without special tools
PE and XLPE-insulated,
N2YSY (Cu) and Pfisterer CONNEX 2 13.5 - 44.0 25 - 400 Insulation material silicone rubber,
N2XSY (Cu) CONNEX 3 15.5 - 55.0 35 - 800 with metal housing
or
NA2YSY (Al) and CONNEX 4 33.0 - 78.5 95 - 1600
NA2XSY (Al) Südkabel SEIK 14 2 13.0 - 40.6 25 - 300 Insulation material silicone rubber,
SEIK 15 3 19.3 - 50.6 120 - 630 with metal housing
Tyco Electronics RPIT-321x 2 19.5 - 36.0 95 - 300 Insulation material silicone rubber,
RPIT-331x 3 26.0 - 50.0 240 - 630 with metal housing
Thermoplastic-insulated cables ≤ 24 kV according to IEC 60502-2
Single-core cable or nkt cables CPI 2 2 17.0 - 40.0 25 - 300 Insulation material silicone rubber, with or without
three-core cable, CPI 3 3 21.2 - 45.6 95 - 630 metal housing, installation without special tools
PE and XLPE-insulated,
N2YSY (Cu) and Pfisterer CONNEX 2 13.5 - 44.0 25 - 400 Insulation material silicone rubber,
N2XSY (Cu) CONNEX 3 15.5 - 55.0 35 - 800 with metal housing
or
NA2YSY (Al) and CONNEX 4 33.0 - 78.5 95 - 1600
NA2XSY (Al) Südkabel SEIK 24 2 13.0 - 40.6 25 - 300 Insulation material silicone rubber,
SEIK 25 3 19.3 - 50.6 50 - 630 with metal housing
Tyco Electronics RPIT-521x 2 19.5 - 36.0 50 - 300 Insulation material silicone rubber,
RPIT-531x 3 26.0 - 50.0 150 - 630 with metal housing
Thermoplastic-insulated cables ≤ 40.5 kV according to IEC 60502-2
Single-core cable or nkt cables CPI 2 2 17.0 - 40.0 25 - 300 Insulation material silicone rubber, with or without
three-core cable, CPI 3 3 21.2 - 51.0 50 - 630 metal housing, installation without special tools
PE and XLPE-insulated, Pfisterer CONNEX 2 13.5 - 44.0 25 - 400 Insulation material silicone rubber,
N2YSY (Cu) and CONNEX 3 15.5 - 55.0 35 - 800 with metal housing
N2XSY (Cu) CONNEX 4 33.0 - 78.5 95 - 1600
or
Südkabel SEIK 34 2 13.0 - 40.6 35 - 300 Insulation material silicone rubber,
NA2YSY (Al) and with metal housing
SEIK 35 3 19.3 - 50.6 50 - 630
NA2XSY (Al)
Tyco Electronics RPIT-621x 2 19.5 - 36.0 50 - 185 Insulation material silicone rubber,
RPIT-631x 3 26.0 - 50.0 95 - 630 with metal housing

Busbar and panel connection (commercially available bar systems)

Bar type Bar connection Remark
Make Type Conductor material Max.
rated current 1)
Solid-insulated bar MGC Duresca DE Copper, aluminum 2500 A Outer sheath made of polyamide
Moser Glaser Duresca DG Copper, aluminum 2500 A Outer sheath made of CrNi steel or aluminum
Tefelen Preissinger ISOBUS MR Copper, aluminum 2500 A Outer sheath made of heat shrinkable tube
Ritz SIS Copper, aluminum 2500 A Outer sheath made of heat shrinkable tube
Gas-insulated bar MGC Moser Glaser Gaslink Copper 2500 A Aluminum housing
Tefelen Preissinger ISOBUS MG Copper 2500 A Aluminum housing

Busbar and panel connection (commercially available dummy plugs)

Accessories Dummy plug Remark
Make Type Size Rated voltage
Inside-cone plug-in nkt cables FPI 2 2 40.5 kV Insulation material silicone rubber,
system according with metal housing
to EN 50181 FPI 3 3 40.5 kV
Pfisterer 2 40.5 kV Insulation material silicone rubber,
Blindstecker 3 40.5 kV with metal housing
4 40.5 kV
Südkabel ISIK 14/24/34 2 12 / 24 / 40.5 kV Insulation material silicone rubber,
ISIK 15/25/35 3 12 / 24 / 40.5 kV with metal housing
Tyco Electronics RPIC-2 2 40.5 kV Insulation material silicone rubber,
RPIC-3 3 40.5 kV with metal housing
1) Higher values on request

46 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Indicating and measuring equipment

Voltage detecting systems according

to IEC 61243-5 or VDE 0682-415, Indicators and detecting Symbols shown
IEC 62271-206 systems
VOIS+, VOIS R+ CAPDIS-S1+ CAPDIS-S2+
• To verify safe isolation from supply
• LRM detecting systems L1 L2 L3 L1 L2 L3 L1 L2 L3
– with plug-in indicator
– with integrated indicator, type VOIS+, Plug-in A0

R-HA40-103 eps
VOIS R+ voltage
– with integrated indicator, with integrated indicator A1
repeat test of the interface, with integrat- per phase at
ed function test, type CAPDIS-S1+, the panel front A2
WEGA 1.2 C, WEGA 1.2 C Vario, with inte-
grated signaling relay, type CAPDIS-S2+, A3
WEGA 2.2 C, WEGA 3.

R-HA35-104a.png
Plug-in voltage indicator A4
• Verification of safe isolation from supply
phase by phase A5
• Indicator suitable for continuous
operation
A6
• Measuring system and voltage indicator
can be tested, repeat test according to
local specifications and standards A7

HA35-2579c eps
• Voltage indicator flashes if high voltage
is present. A8
VOIS+, VOIS R+
• Integrated display, without auxiliary Integrated voltage indicator CAPDIS S2+: The red and green LEDs show the
power VOIS+, VOIS R+ state of the relay contacts
• With indication “A1” to “A3” (see legend) || LED doesn‘t light up
• Maintenance-free, repeat test according to zz LED lights up
local specifications and standards required U = Operating voltage
• With integrated 3-phase LRM test socket
R-HA35-154a.png

R-HA35-155a.png

for phase comparison A0 CAPDIS-S2+: Operating voltage

• With integrated signaling relay not present
(only VOIS R+) A1 Operating voltage present
• Degree of protection IP54.
A2 – Operating voltage not present
Common features of CAPDIS-Sx+ – For CAPDIS-S2+: Auxiliary
• Maintenance-free power not present
• Integrated display, without auxiliary A3 Failure in phase L1, operating
power voltage at L2 and L3
• Integrated repeat test of the interfaces (for CAPDIS-Sx+ also earth-fault
(self-monitoring) indication)
• With integrated function test (without Integrated voltage detecting A4 Voltage (not operating voltage)
auxiliary power) by pressing the “Display- system CAPDIS-S1+, -S2+ present
Test” pushbutton
• Adjustable for different operating voltages A5 Indication “Test” passed
(adjustable capacitance C2) (lights up briefly)
• With integrated 3-phase LRM test socket A6 Indication “Test” not passed
for phase comparison (lights up briefly)
• With connectable signal-lead test L1 A7 Overvoltage present
HA35-2537a eps

• With overvoltage monitoring and L2 (lights up permanently)

signaling (1.2 times operating voltage) L3 A8 Indication “ERROR”, e.g.: in case
• Degree of protection IP54. –C1 of missing auxiliary voltage
CAPDIS-S1+
• Without auxiliary power U LE –C2 U2
• With indication “A1” to “A7” (see legend)
• Without ready-for-service monitoring
• Without signaling relays (without auxiliary LRM system CAPDIS / VOIS
contacts). plugged in installed

CAPDIS-S2+ Voltage indication

• With indication “A0” to “A8” (see legend) via capacitive voltage divider (principle)
• Only by pressing the “Test” pushbutton:
“ERROR” indication (A8), e.g. in case of – C1 Capacitance integrated into bushing
missing auxiliary voltage – C2 Capacitance of the connection leads
• With ready-for-service monitoring and the voltage indicator to earth
(auxiliary power required) ULE = UN / 3 during rated operation in the
• With integrated signaling relay for signals three-phase system
(auxiliary power required). U2 = UA = Voltage at the capacitive interface of
the switchgear or at the voltage indicator

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 47
 Components
Indicating and measuring equipment

WEGA 3
• Display indication Symbols shown

R-HA35-WEGA-3.psd
“A1” to “A5” WEGA 3 WEGA 1.2 C WEGA 2.2 C
• Integrated repeat test of the WEGA 1.2 C Vario
interface (self-monitoring) L1 L2 L3 L1 L2 L3 L1 L2 L3
• With integrated 3-phase LRM A0
test socket for phase com-
parison. A1
WEGA 1.2 C, WEGA 1.2 C Vario
A2
• Display indication “A1” to “A6”
(see legend) A3
Integrated voltage indicator
• Maintenance-free WEGA 3
• Integrated repeat test of the A4
R-HA35-WEGA-1-2-C.psd

interface (self-monitoring)
A5
• With integrated function test
(without auxiliary power) by A6

HA35-2845a eps
pressing the “Display Test”
pushbutton A7
• With integrated 3-phase
LRM test socket for phase LC display gray: not illuminated
LC display white: illuminated
comparison
WEGA 2.2 C: The red and green LEDs show the
• Without integrated signaling
state of the relay contacts
relay
|| LED doesn‘t light up
• Without auxiliary power Integrated voltage indicator
WEGA 1.2 C, WEGA 1.2 C Vario zz LED lights up
• Degree of protection IP54 U = Operating voltage
• Adjustable for different
R-HA35-WEGA-2-2-C.psd

A0 For WEGA 2.2 C:

operating voltages
Operating voltage not present,
(adjustable capacitance C2) auxiliary power present,
(only for WEGA 1.2 C Vario). LCD illuminated
WEGA 2.2 C A1 Operating voltage present
For WEGA 2.2 C: Auxiliary power
• Display indication “A0” to present, LCD illuminated
“A7” (see legend) A2 Operating voltage not present
• Maintenance-free For WEGA 2.2 C: Auxiliary power
• Integrated repeat test of the not present, LCD not illuminated
A3 Failure in phase L1,
interface (self-monitoring)
Integrated voltage indicator operating voltage at L2 and L3
• With integrated function test For WEGA 2.2 C: Auxiliary power
WEGA 2.2 C
(without auxiliary power) by present, LCD illuminated
pressing the “Display Test” A4 Voltage present,
pushbutton current monitoring of coupling
L1
HA35-2537a eps

• With integrated 3-phase section below limit value

L2
LRM test socket for phase For WEGA 2.2 C: Auxiliary power
L3
–C1 present, LCD illuminated
comparison
A5 Indication “Display-Test” passed
• With two integrated For WEGA 2.2 C: Auxiliary power
ULE –C2 U2
signaling relays (auxiliary present, LCD illuminated
power required) A6 Indication “Display Test” passed
• Degree of protection IP54. LRM system WEGA For WEGA 2.2 C:
plugged in installed Auxiliary power present
Voltage indication A7 For WEGA 2.2 C: LCD for missing
via capacitive voltage divider (principle) auxiliary voltage is not illuminated

– C1 Capacitance integrated into bushing

– C2 Capacitance of the connection leads
and the voltage indicator to earth
ULE = UN / 3 during rated operation in the
three-phase system
U2 = UA = Voltage at the capacitive interface of
the switchgear or at the voltage indicator

48 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Indicating and measuring equipment

Verification of correct
terminal-phase connections Phase comparison test units according to IEC 61243-5 or VDE 0682-415
• Verification of correct terminal-
phase connections possible by

R-HA40-059 eps

R-HA40-089.tif
means of a phase comparison
test unit (can be ordered
separately)
• Safe-to-touch handling of the
phase comparison test unit
by inserting it into the capaci-
tive taps (socket pairs) of the
switchgear.

Phase comparison test unit

make Pfisterer, type EPV
as combined test unit (HR and LRM) for: Phase comparison test unit
– Voltage detection make Horstmann, type ORION 3.1
– Phase comparison as combined test unit (HR and LRM) for:
– Interface test – Phase comparison
– Integrated self-test – Interface testing at the switchgear
– Indication via LED. – Voltage detection
– Integrated self-test
– Indication via LED and acoustic alarm
R-HA35-124.eps

– Phase sequence indicator.

R-HA41-ORION-M-1.tif

Phase comparison test unit

make Kries, type CAP-Phase
as combined test unit (HR and LRM) for:
– Voltage detection Phase comparison test unit
– Repeat test make Horstmann, type ORION M1
– Phase comparison as combined test unit (HR and LRM) for:
– Phase sequence test – Voltage detection
– Self-test – Phase comparison
The unit does not require a battery. – Interface testing at the switchgear
– Integrated self-test
– Indication via display and acoustic alarm
– Phase sequence indication and status LED
– Measurement of interface current
up to 25µA
– Measurement of phase angle from
–180° to +180°
– Measurement of harmonics up to
40th harmonic
– Securing the measured values via PC
software (ORION explorer) and USB.

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 49
 Components
Indicating and measuring equipment

Ready-for-service indication
Gas monitoring of
Features single-busbar switchgear
• Simple, visual check of the 8DA10
ready-for-service indicator by
red/green indication areas
• Indication of gas pressure
also guaranteed without
auxiliary voltage supply
• Gas pressure manometers
arranged at the switchgear
front
2
• Gas filling equipment with
non-return valve arranged at
the switchgear front beside
the associated gas pressure
manometer
• Gas pressure manometers

R-HA35-147.psd
R_HA35-135 tif
with two signaling contacts
1
for “gas pressure too low / gas
pressure too high” indication
• Option: Gas pressure mano-
Gas pressure manometer (1) Gas pressure manometers (2) for
meters with three signaling
for circuit-breaker housing busbar housings (arranged at the
contacts for “gas pressure
(arranged at the panel front) lateral switchgear termination)
too low / very low” and “gas
pressure too high” indication
• Option: Gas pressure mano-
meters with temperature and
pressure compensation.

Low-voltage compartment
• For accommodation of pro- Gas monitoring of
tection, control, measuring double-busbar switchgear
and metering equipment 8DB10
• Partitioned safe-to-touch
from the high-voltage part of
the panel
• Low-voltage compartment
can be removed, bus wires
and control cables are
plugged in
• Option: Higher low-voltage 3 4
compartment (1200 mm in-
stead of 850 mm) possible.
R_HA35-136 tif

R-HA35-148.tif

Gas pressure manometers (3) for Gas pressure manometers (4) for
circuit-breaker and disconnector busbar housings (arranged at the
housings (arranged at the panel front) lateral switchgear termination)

50 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Protection, control, measuring and monitoring equipment

Protecting, controlling and monitoring are the basic require- process, IT security, service and testability, or simple and safe
ments placed on a complete bay controller across all technolo- operability of the devices and tools.
gy generations. The properties the user expects from modern On the following pages you will find functional descriptions
bay controllers are: multifunctionality, reliability, safety and for some selected devices. The low-voltage compartment can
communication capability. accommodate all customary protection, control, measuring
The increasing integration of many functions in one multi- and monitoring equipment available on the market:
functional device leads to an optimally supported engineering

Overview of digital protection devices

Main function SIPROTEC 5 SIPROTEC SIPROTEC 4 Reyrolle

Compact
Overcurrent and feeder protection
Overcurrent protection with PMU1) and control 7SJ82 / 85 7SJ80 / 81 7SJ61/ 62 / 63 / 64 / 66 7SR10 / 11/ 12 / 21/ 22
Self powered overcurrent protection 7SJ45 7SR45
Line protection
Distance protection with PMU1) and control 7SA82 / 86 / 87 7SA61/ 63 / 64
Line differential protection with PMU1) and control 7SD82 / 86 / 87 7SD80 7SD610, 7SD5 7SR18 Solkor
Combined line differential and distance protection with PMU1) 7SL82 / 86 / 87 7SD5
and control
Breaker management with PMU1) and control 7VK87 7VK61
Overcurrent protection for lines with PMU1) 7SJ86
Transformer differential protection
Transformer differential protection with PMU1), control and 7UT82 / 85 / 86 / 87 7UT612 / 613 / 63 7SR242 Duobias
monitoring
Motor- and generator protection
Motor protection with PMU1) and control 7SK82 / 85 7SK80 / 81 7SJ61/ 62 / 63 / 64 / 66 7SR105 Argus,
7SR17 Argus
Generator protection with PMU1) and control 7UM85 7UM61/ 62
Busbar differential protection
Centralized busbar differential protection 7SS85 7SS52
Bay controller
Bay controller for control/interlocking tasks with PMU1), 6MD85 / 86 6MD63 / 66
monitoring and protection functions1)
Fault recorder
Fault recorder, fault recorder with power quality recordings 7KE85
and fault recorder with PMU
Voltage and frequency protection
Applicable for system decoupling, load shedding 7RW80 7SR158 Argus
and load restoration
Synchronizing
Synchronizing 7VE61/ 63 7SR157 Argus
Distribution automation
Protection and automation for overhead lines 7SC80 7SR224 Argus
Capacitor bank protection
Capacitor bank protection 7SJ82 / 85 7SR191 Capa
High impedance protection
High impedance protection 7SR23 DAD
High speed busbar transfer
High speed busbar transfer 7VU68

1) Optional for SIPROTEC 5

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 51
 Components
Protection, control, measuring and monitoring equipment

SIPROTEC 5 device series

• Powerful automation with graphical CFC
(Continuous Function Chart)
• Secure serial protection data communication, also over
large distances and all available physical media (fiber-
optic cable, 2-wire connections and communication
networks)
• Recognition of static and transient earth faults (passing
contact function in resonant-earthed and isolated systems)
• Measurement of operational values
• Phasor Measurement Unit (PMU) for synchrophasor

R-HA35-178.tif
R-HA35-177.tif
measured values and IEEE C37.118 protocol
• Powerful fault recording
• Control of switching devices.
Overcurrent protection device SIPROTEC 7SJ82
• Directional and non-directional time-overcurrent protection SIPROTEC 7SJ82 2 3
with additional functions
• Time optimization of the tripping times by directional
comparison and protection data communication
• Frequency protection and rate-of-frequency-change
protection for load shedding applications
• Overvoltage and undervoltage protection in all required
variations
• Power protection, configurable as active or reactive
power protection
• Control, synchrocheck and system interlocking
• Firmly integrated electrical Ethernet port J for DIGSI
• Complete IEC 61850 (reporting and GOOSE)

R-HA35-180.tif
via integrated port J
R-HA35-179.tif

• Two optional, pluggable communication modules usable

for different and redundant protocols (IEC 61850,
IEC 60870-5-103, DNP3 (serial+TCP), Modbus RTU Slave,
protection data communication). 1

Distance protection SIPROTEC 7SA86 SIPROTEC 7SA86 2 3

• Line protection for all voltage levels with 3-pole tripping
• Very short tripping time
• Selective protection of overhead lines and cables with
single- and multi-ended infeeds
• Time-graded backup protection to differential protection
relays
• Suitable for radial, ring-shaped, or any type of meshed
systems of any voltage level with earthed, resonant-
earthed or isolated neutral point
• Main protection function: 6-system distance protection
• Detection of current transformer saturation for fast trip-
ping with high accuracy at the same time.
R-HA35-180.tif
R-HA35-179.tif

Differential protection SIPROTEC 7SD86

• Line protection for all voltage levels with 3-pole tripping
• Phase-selective protection of overhead lines and cables
with single- and multi-ended infeeds of all lengths with 1
up to 6 line ends SIPROTEC 7SD86 2 3
• Transformers and shunt reactors within the protection
zone are possible
• Suitable for radial, ring-shaped, or any type of meshed 1 Modularly expandable
systems of any voltage level with earthed, resonant- 2 Pluggable and retrofittable
earthed or isolated neutral point communication ports
• Protection of lines with capacitive series compensation 3 Pluggable current and voltage
• Directional backup protection and various additional terminal blocks
functions.

52 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
Protection, control, measuring and monitoring equipment

Transformer differential protection SIPROTEC 7UT85

• Transformer differential protection for two-winding
transformers with versatile additional protection functions
• Universal utilization of the permissible measuring points
• Flexible adjustment to the transformer vector group,
controlling of making and overexcitation processes,
secure performance in case of current transformer
saturation with different saturation degrees.
• Protection of standard power transformers and
auto-transformers
• Increased sensitivity in case of earth short-circuits close
to the neutral point by means of a separate earth-fault
differential protection 1

R-HA35-181.tif
• Additional current and voltage inputs can be provided for
standard protection functions such as overcurrent, volt-
age, frequency, etc.
• In the standard version, two communication modules SIPROTEC 7UT85
can be plugged in, and different protocols can be used
(IEC 61850, IEC 60870-5-103, DNP3 (serial, TCP),
Modbus RTU Slave).
Digital fault recorder SIPROTEC 7KE85
• Fast-scan recorder
• Up to 2 slow scan recorders
• Up to 5 continuous recorders
• Usable as Phasor Measurement Unit (PMU) according to
IEEE C37.118 Standard
• Transfer of recordings and triggering via IEC 61850
• Variable sampling rates programmable
between 1 kHz – 16 kHz
R-HA35-183.tif

1
• No-loss data compression
• Time synchronization via IRIG-B, DCF77 and SNTP
• Free mapping of measured values to the individual recorders
• Free combination of measuring groups for power calculation
SIPROTEC 7KE85
• Quality bits for displaying the momentary channel quality
• The trigger functions of a function block are the fun-
damental value, r.m.s. value, zero-sequence, positive- 1 Modularly expandable
sequence, negative-sequence system, Σ active, Σ reactive
and Σ apparent power
• Level trigger and gradient trigger for each trigger function
• Flexible cross and network trigger
• Creation of trigger functions with the graphical automa-
tion editor CFC (Continuous Function Chart)
• Trigger functions by combination of single signals, double
signals, analog values, binary signals, Bool signals and
GOOSE messages.
SIPROTEC Compact series
Overcurrent protection SIPROTEC 7SJ80
• Pluggable current and voltage terminals
• Binary input thresholds settable using DIGSI (3 stages)
• Secondary current transformer values (1A/5A)
settable using DIGSI
• 9 programmable function keys
• 6-line display
LSP 2874-afp.eps

• Buffer battery exchangeable from the front

• USB front port
• 2 additional communication ports
• IEC 61850 with integrated redundancy (electrical or optical) SIPROTEC Compact 7SJ80
• Relay-to-relay communication through Ethernet with
IEC 61850 GOOSE
• Millisecond-accurate time synchronization through
Ethernet with SNTP.

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 53
 Components
ANSI design

Panel design
• Factory-assembled, type-tested according Basic panel design
to IEC 62271
• Single-pole metal-enclosed, Legend for 8DA10
with metallic partitions 1) 1 Low-voltage compartment
• Hermetically bolted switchgear 2 Electronic control board,
housings made of corrosion-resistant 1 e.g. multifunction
aluminum alloy protection
• Switchpanel poles arranged one behind 3 Operating mechanism
2 and interlock for three-
the other
• Maintenance-free in an indoor position disconnector, as
environment (IEC 62271-1) 3 well as mechanical position
• Cable connection with inside-cone plug-in indicators for three-
system according to EN 50181 position disconnector and
• Wall-standing or free-standing arrange- 4 circuit-breaker
ment 4 Manometer for gas
• Subframe, front cover, rear cover and end monitoring of feeder gas
5
walls powder-coated in color “light basic” compartments
(SN 700) 5 Circuit-breaker operating
• Low-voltage compartment mechanism
removable, plug-in bus wires 6 Voltage detecting system

HA35-2691f eps
• Degree of protection 6 7 Operating mechanism
– IP 65 for all high-voltage parts of and interlock for
the primary circuit the three-position
– IP 3XD for the switchgear enclosure disconnector, as well
• Option: IP 31D for the switchgear as mechanical position
enclosure 7 indicator for the three-
• Option: IP 41 for the low-voltage position disconnector at
compartment the feeder
• Vacuum circuit-breaker
• Three-position disconnector for discon-
necting and earthing by means of the Example 8DA10
circuit-breaker Single-busbar panel with three-position
• Make-proof earthing by means of disconnector at the feeder
the vacuum circuit-breaker
• Option: Three-position disconnector for
disconnecting and earthing at the feeder
• For further dimensions and product
range, see pages 14 to 31.
Insulating system
• Switchgear housing filled with SF6 gas
• Features of SF6 gas:
– Non-toxic
– Odorless and colorless
– Non-inflammable
– Chemically neutral
– Heavier than air
– Electronegative (high-quality insulator)
– GWP (Global Warming Potential) = 22,800
• Pressure of the SF6 gas in the switchgear
housing dependent on the electrical rat-
ings (relative pressure at 20 °C):
Rated functional level (relative): 120 kPa
Gas leakage rate: < 0.1 % per year.
Camera system
• Camera system for visual monitoring
of the switch positions of the disconnec-
tors and earthing switches
(see also page 54).
UL certification
• For 8DA and 8DB ANSI design options
there is a UL or cUL certificate available.

1) Corresponds to ”metal-clad“ according to

former standard IEC 60298

54 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
ANSI design

Electrical data, functional level, temperature for single-busbar and double-busbar switchgear according to ANSI
Common elec- Rated insulation level Rated voltage Ur kV 4.76 8.25 15 27 38 40.5 1)
trical data, Rated short-duration power-
functional frequency withstand voltage Ud:
level and – phase-to-phase, phase-to-
temperature earth, open contact gap kV 19 36 36 70 80 80
– across the isolating distance kV 21 40 40 80 95 95
Rated lightning impulse
withstand voltage Up:
– phase-to-phase, phase-to-
earth, open contact gap kV 60 95 95 125 200 200
– across the isolating distance kV 66 105 105 138 220 220
Rated frequency fr Hz 60 60 60 60 60 60
Rated normal current Ir 6) of the busbar A 1250 1250 1250 1250 1250
A 2000 2000 2000 2000 2000
A 2500 2500 2500 2500 2500
A 3000 3000 3000 3000 3000
A 4000 4000 4000 4000 4000
A 5000 5000 5000 5000 5000 5000
Rated functional level pre (relative) of the busbar 120 kPa at 20 °C
Minimum functional level pme 100 kPa at 20 °C
Ambient air temperature – 5 °C to + 55 °C 8)

Data of the switchgear panels

Circuit-break- Rated normal current Ir 4) A 1250 1250 1250 1250 1250 1250
er panel, A 1600 1600 1600 1600 1600 1600
disconnector A 2000 2000 2000 2000 2000 2000
panel 2), A 2500 2500 2500 2500 2500 2500
bus sectio- A 2700 5) 2700 5) 2700 5) 2700 5) 2700 5) 2700 5)
nalizer, bus A 3000 6) 3000 6) 3000 6) 3000 6) 3000 6) 3000 6)
coupler 3) Rated short-time withstand current Ik t k = 3 s bis kA 40 40 40 40 40 40
Rated peak withstand current Ip bis kA 104 104 104 104 104 104
Rated short-circuit making current Ima bis kA 104 104 104 104 104 104
Rated short-circuit breaking current Isc bis kA 40 40 40 40 40 40
Electrical endurance of at rated normal current 10,000 operating cycles 7)
vacuum circuit-breakers at rated short-circuit
breaking current 50 breaking operations
Rated functional level pre (relative) for feeders 120 kPa at 20 °C
Minimum functional level pme 100 kPa at 20 °C

1) Higher values of the rated voltage available with 42 kV

2) Disconnector panel available for single-busbar switchgear 8DA10
3) Bus coupler available for double-busbar switchgear 8DB10
4) Maximum permissible normal current dependent on ambient air temperature
5) 2700 A without forced ventilation (8DB10 on request)
6) 3000 A with forced ventilation (8DB10 on request)
7) Option: 30,000 operating cycles
8) Option: Ambient air temperature –30 °C to +55 °C

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 55
 Components
ANSI design

Camera system
8DA and 8DB switchgear can be
1
designed according to ANSI require-
ments. For this purpose, every three-
position disconnector is equipped with
a digital camera monitoring system
VDMS (Visible Disconnect Monitor-
ing System). The CLOSED - OPEN -
EARTHED positions are transmitted per E
phase through a USB / RJ45 interface
and signaled to a mobile computer. A

Current transformer features

• Designed as ring-core current
transformers, single-pole
• Free of dielectrically stressed
cast-resin parts (due to design)
• Inductive type C
2
• Climate-independent
• Secondary connection by means of

HA35-2734d eps
a terminal strip in the low-voltage
HA35-2692b eps

compartment of the panel D

• Cast-resin insulated.

Voltage transformer features

• Single-pole, plug-in design
• Connection system with plug-in Current transformer Voltage transformer installation
contact according to EN 50181 installation (basic scheme) (basic scheme)
• Inductive type
C Feeder current transformer 1 Busbar voltage transformer
• Safe-to-touch due to metal
(type 4MC4_90) 4MU4_FUSE with primary fuses and
enclosure D Feeder current transformer three-position disconnector
• Climate-independent (type 4MC4_10) 2 Feeder voltage transformer
• Secondary connection by means E Busbar current transformer 4MU3_FUSE with primary fuses
of plugs in the low-voltage com- (type 4MC4_40) (not in the panel, connection via
partment of the panel Option: flexible cable with plug size S2 at the
A Feeder current transformer panel connection housing and metal-
• Cast-resin insulated. enclosed voltage transformer)
between circuit-breaker and
Installation three-position disconnector on
the busbar
Arranged outside the primary enclo-
(type 4MC4_90)
sure (switchgear housing).
Internal arc classification
LAN USB
• Internal arcing test according interface interface
to IEEE Std C37.20.7™-2007
(see also page 13).
R-HA35-149b tif

USB and LAN interface for visual

monitoring of the positions of the
three-position disconnector

56 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Components
ANSI design

Option:
In accordance with ANSI requirements, Example:
8DA and 8DB switchgear can be Position indicators of 8DA10 with additional
equipped with an additional three- three-position disconnector at the feeder
position disconnector at the feeder.
Features
-Q1
• Rated normal currents up to 2000 A
• 2000 operating cycles for the discon-
nector (higher operating cycles on -Q0
request) 52
• 1000 operating cycles for the earth-
ing switch (higher operating cycles on
request)
• Operating shaft and disconnector con- -Q9
tacts with common center of rotation
and reliable switch position

HA35-2736b eps
up to the operating front of the panel
• Gas-tight bushings separate the bus-
bar and circuit-breaker housings under-
neath the busbar disconnector contacts
• Cable connection and circuit-breaker Feeder OPEN
housings can be removed without
interrupting busbar operation
-Q1
• Maintenance-free.

Switch positions
• CLOSED, OPEN, EARTHED or -Q0

READY-TO-EARTH 52

• CLOSED: Disconnector contact

connected with the busbar:
Main circuit closed between busbar,
-Q9
circuit-breaker and feeder
• OPEN: Main circuit open between busbar,
circuit-breaker and feeder: Test voltages
HA35-2737b eps

for isolating distances are withstood

• READY-TO-EARTH: Contact blades con-
nected with the earthing contact
• EARTHED: Circuit-breaker closed. Three- Feeder CLOSED
position disconnector at the feeder con-
nected with earthing contact.

Operating mechanism -Q1

• Only permissible operations possible

due to logical mechanical interlocks
-Q0
• Mechanically coupled position 52
indicators
• Separate operating shafts for the
“DISCONNECTING”, “EARTHING” and
“READY-TO-EARTH” functions -Q9
• With manual operating mechanism
• Option: With motor operating
mechanism
HA35-2738b eps

Motor rating at
24 V to 250 V DC: max. 100 W
110 V to 240 V AC: max. 130 VA
• Same sense of rotation for the Feeder EARTHED
switching operations of the “CLOSE”
or “OPEN” functions.

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 57
 Standards
Standards, specifications, guidelines

Type of service location Table – Dielectric strength

The switchgear can be used as indoor installation according Single-busbar and double-busbar switchgear
to IEC 61936 (Power installations exceeding 1 kV AC) 8DA10 and 8DB10
• Outside lockable electrical service locations at places which
are not accessible to the public. Enclosures of switchgear can Rated voltage kV 12 24 36 40.5
only be removed with tools Rated short-duration power-frequency withstand voltage
• In lockable electrical service locations. A lockable electrical
service location is a place outdoors or indoors that is reserved – Between phase and earth kV 28 50 70 85
exclusively for housing electrical equipment and which is kept – Across isolating distance kV 32 60 80 90
under lock and key. Access is restricted to authorized person- Rated lightning impulse withstand voltage
nel and persons who have been properly instructed in electri-
cal engineering. Untrained or unskilled persons may only enter – Between phase and earth kV 75 125 170 185
under the supervision of authorized personnel or properly – Across isolating distance kV 85 145 195 220
instructed persons.
Terms
“Make-proof earthing switches“ are earthing switches with Table – Dielectric strength
short-circuit making capacity according to IEC 62271-102 and Traction power supply switchgear 8DA11/ 12
EN 62271-102. Rated voltage according to
Dielectric strength EN 50124-1 kV 17.25 27.5
• The dielectric strength is verified by testing the switchgear Nominal voltage according to
with rated values of short-duration power-frequency with- IEC 60850 / EN 50163 kV 15 25
stand voltage and lightning impulse withstand voltage
according to IEC 62271-1 (see table “Dielectric strength“). Rated short-duration power-frequency withstand voltage
• The rated values are referred to sea level and to normal – Between phase and earth kV 50 95
atmospheric conditions (1013 hPa, 20 °C, 11g/m3 humidity
– Across isolating distance kV 60 110
according to IEC 60071).
The gas insulation at a relative gas pressure of > 50 kPa permits Rated lighting impulse withstand voltage
switchgear installation at any desired altitude above sea level – Between phase and earth kV 125 200
without the dielectric strength being adversely affected.
– Across isolating distance kV 145 220
Standards
8DA and 8DB switchgear complies with the relevant standards
and specifications applicable at the time of type tests.
In accordance with the harmonization agreement reached by
the countries of the European Union, their national specifica-
tions conform to the IEC standard.

Overview of standards (September 2017)

IEC standard VDE standard EN standard
Switchgear 8DA and 8DB IEC 62271-1 VDE 0671-1 EN 62271-1
IEC 62271-200 VDE 0671-200 EN 62271-200
Devices Circuit-breakers IEC 62271-100 VDE 0671-100 EN 62271-100
Disconnectors and earthing switches IEC 62271-102 VDE 0671-102 EN 62271-102
Voltage detecting systems IEC 61243-5 VDE 0682-415 EN 61243-5
Degree of protection IP code IEC 60529 VDE 0470-1 EN 60529
IK code IEC 62262 VDE 0470-100 EN 50102
Insulation – IEC 60071 VDE 0111 EN 60071
Instrument – IEC 61869-1 VDE 0414-9-1 EN 61869-1
transformers Current transformers IEC 61869-2 VDE 0414-9-2 EN 61869-2
Voltage transformers IEC 61869-3 VDE 0414-9-3 EN 61869-3
Installation, erection – IEC 61936-1 VDE 0101 –
Insulating gas SF6 Use and handling of SF6 IEC 62271-4 VDE 0671-4 EN 62271-4
Specification for new SF6 IEC 60376 VDE 0373-1 EN 60376
Guidelines for the checking and treat- IEC 60480 VDE 0373-2 EN 60480
ment of SF6 taken from electrical
equipment
Overview of standards for traction applications
IEC standard – EN standard
Supply voltage 8DA11 and 8DA12 IEC 60850 VDE 0115-102 EN 50163
Switchgear 8DA11 and 8DA12 IEC 62505 VDE 0115-320 EN 50152
Insulation 8DA11 and 8DA12 – VDE 0115-107 EN 50124

58 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Standards
Standards, specifications, guidelines

Current carrying capacity • IEEE C37-81-1989 “IEEE Guide for Seismic Qualification of
• According to IEC 62271-200 or IEC 62271-1, the rated nor- Class 1E Metal-Enclosed Power Switchgear Assemblies”
mal current refers to the following ambient air • IEC 60980-1989 “Recommended practices for seismic
temperatures: qualification of electrical equipment of the safety system
– Maximum of 24-hour mean + 35 °C for nuclear generating stations”.
– Maximum + 40 °C For installation on even and rigid concrete or steel structure
• The current carrying capacity of the panels and busbars (without considering building influences), the tested ground
depends on the ambient air temperature outside the accelerations meet the following requirements:
enclosure. • Uniform Building Code 1997 (UBC) – Zone 4
• California Building Code 1998 (CBC) – Zone 4
Internal arc classifications
• International Building Code 2006 (IBC) – 200 %
• Protection of operating personnel by means of tests for • American Society of Civil Engineers 2005 (ASCE) – 200 %
verifying the internal arc classification
• IEEE 693-2005 – High required response spectrum
• Internal arcing tests must be performed in accordance (Figure A.1).
with IEC 62271-200 and IEEE Std C37.20.7™-2007
• Definition of criteria according to IEC: Color of the panel front
– Criterion 1 Siemens standard (SN) 47 030 G1, color “light basic” (SN700)
Correctly secured doors and covers do not open, limited (similar to RAL 7044 / silk grey).
deformations are accepted
Climate and environmental influences
– Criterion 2
No fragmentation of the enclosure, no projection of small 8DA and 8DB switchgear is completely enclosed and insensi-
parts above 60 g tive to climatic influences.
– Criterion 3 • All medium-voltage devices are installed in gas-tight and
No holes in accessible sides up to a height of 2 m bolted switchgear housings made of corrosion-resistant
– Criterion 4 aluminum alloy and filled with SF6 gas
No ignition of indicators due to hot gases • Live parts inside and outside the switchgear housing are
– Criterion 5 provided with single-pole enclosure
The enclosure remains connected to its earthing point. • At no point can creepage currents flow from high-voltage
Resistance to internal faults potentials to earth
• Operating mechanism parts which are functionally impor-
Due to the single-pole enclosure and the gas insulation of the
tant are made of corrosion-resistant materials
switchgear and the switching devices, the possibility of faults
in gas-insulated switchgear is a mere fraction of that typical of • Bearings in the operating mechanism are designed as
other switchgear types: dry-type bearings and do not require lubrication.
• There are no effects due to external influences, such as: Recycling
– Pollution layers
The switchgear can be recycled in ecological manner in
– Humidity
compliance with existing legislation. Auxiliary devices such as
– Small animals and foreign objects
short-circuit indicators have to be recycled as electronic scrap.
• Maloperation is practically excluded due to logical Batteries have to be recycled professionally. Insulating gas SF6
arrangement of operating elements has to be evacuated professionally as a reusable material and
• Short-circuit-proof feeder earthing by means of the recycled (SF6 must not be released into the environment).
circuit-breaker.
In the unlikely event of a fault within the switchgear housing, Protection against solid foreign objects,
the energy conversion in the case of an internal arc fault is electric shock and water
minor thanks to the SF6 insulation and the shorter length of 8DA and 8DB switchgear fulfills according to the standards
the arc, approximately only ⅓ of the converted energy of an IEC 62271-1 EN 62271-1
arc in air insulation. IEC 62271-200 EN 62271-200
Resistance to short circuits and earth faults IEC 60529 EN 60529
Two-phase and three-phase short circuits between the primary IEC 62262 EN 50102
conductors are excluded by the single-pole primary enclosure. the following degrees of protection:
Degree of protection Type of protection
Seismic withstand capability (optional)
IP 65 for parts of the primary circuit under high voltage
8DA and 8DB switchgear can be upgraded for regions at risk
IP 3XD for switchgear enclosure
from earthquakes.
IP 31D for switchgear enclosure (optional)
For upgrading, earthquake qualification testing has been
carried out in accordance with the following standards: IP 41 for low-voltage compartment (optional)
• IEC 60068-3-3 “Guidance – seismic test methods for equipment”
• IEC 60068-2-57 “Test Ff: Vibration – Time-history method” Degree of protection Type of protection
• IEC 60068-2-6 “Test Fc: Vibration (sinusoidal)” IK 07 for switchgear enclosure
• IEEE 693-2005 “Recommended Practice for Seismic Design
of Substations”
• IEEE 344-2004 “IEEE Recommended Practice for Seismic
Qualification of Class 1E Equipment for Nuclear Power
Generating Stations”

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 59
 First circuit-breaker switchgear 8DA10 – 1982

Up to now, more than 100,000 8DA and 8DB

switchgear panels successfully in operation
worldwide.

R-HA35-153.tif

R-HA35-151.eps

R-HA35-150.eps

R-HA35-154.tif R-HA35-152.eps

60 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
 Notes

Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017 61
 Notes

62 Fixed-Mounted Circuit-Breaker Switchgear Type 8DA and 8DB up to 40.5 kV, Gas-Insulated · Siemens HA 35.11 · September 2017
Published by
Siemens AG 2017
Energy Management Division
Medium Voltage & Systems
Mozartstraße 31 C
91052 Erlangen, Germany
For further information please contact
our Customer Support Center
Phone: +49 180 524 70 00
Fax: +49 180 524 24 71
E-mail: support.energy@siemens.com
siemens.com/medium-voltage-switchgear
Article No. EMMS-K1435-A101-B5-7600
Printed in Germany
Dispo 40401
PU 003276 KG 09.17 1.0
Subject to changes and errors. The information
given in this document only contains general
descriptions and / or performance features which
may not always specifically reflect those described,
or which may undergo modification in the course
of further development of the products.
The requested performance features are binding
only when they are expressly agreed upon in the
concluded contract.

September
2017