INSTRUCTION MANUAL RB360093E

PARS SWITCH CO.

PRODUCT INFORMATION
RB36 093E-4 rev . 1

SF6 CIRCUIT – BREAKER TYPE

FPS3625D WITH ONE OPERATING
DEVICE TYPE BLRM

R&D DEPARTMENT 2004-04-20

DESCRIPTION
Medium voltage circuit – breaker type FPS RB36 094E - 3
Functional values RB36 095E – 2
Lubricants RB36 509E
Locking liquid for threads RB36 722E - 39
General instructions for maintenance RB36 719E – 2
Transport RB36 722E – 34
Storage prior to erection RB36 722E - 35

ERECTION AND MAINTENANCE MANUAL FOR SF6

CIRCUIT – BREAKER TYPE FPS 3625D WITH ONE
OPERATING DIVICE TYPE BLRM RB36 87 6E - 4

Erection
Commissioning
Maintenance
Trouble shooting
Spare parts

PRODUCT INFORMATION
SPRING OPERATED DEVICE TYPE BLRM RB36 1107 87E

ANNEX A Gas filling pressure

 INSTRUCTION MANUAL RB360093E

DESCRIPTION

MEDIUM VOLTAGE CIRCUIT – BREAKER TYPE FPS

The medium voltage circuit – breaker type FPS is a detached SF6 circuit –
breaker for outdoor erection in open substations .

The circuit – breaker is built up of three separate poles, which consist of three
main parts . At the bottom the mechanism housings made of aluminum. The
hollow silicon insulators through which operating insulators run and on top the
breaking units. Each breaking unit consists of hollow insulator with an upper
and lower flange constitute the casing and a lower and an upper current path
with a contact system. The moving contacts are assembled on upper one.

The circuit – breaker poles to FPS are permanently filled with SF6 – gas ,
normally to the pressure 0.45 Mpa absolute at 200c. for monitoring the pressure
to circuit – breaker is equipped with a density monitor. The poles are mounted
on common supporting frame, consisting of a front and a rear pole beam.
The latter is mounted on two supports, which are anchored to the foundations.
The beams and supports are hot – dip galvanized.
The pressure rise and gas flow which are necessary for extinguishing the arc
during the course of breaking are produced by compression of the gas.

At the opening operation the moving contact is pulled downwards over the fixed
piston and the confined quantity of gas is compressed and at high speed forced
out through the springs in the upper end of the cylinder. At the same stage the
arcing contacts are separated and an arc occurs. A specially formed nozzle leads
the out flowing gas towards the arc. The gas is allowed to pass both downwards
through the moving arcing contact and upwards past the fixed arcing contact.
For the continuous current there are separate contacts which are not affected by
arc at breaking.

At closing operation the moving contacts is pushed upwards at which time the
contacts engage and the cylinder is filled with gas again.

The FPS circuit – breaker is operated by a motor – operated spring closing

device type BLRM.

The energy for both the opening and closing operations are stored in spring
which are enclosed in the operating devices.

Normal operating cycle is o - 0.3s-co - 3min-co

 INSTRUCTION MANUAL RB360093E

The circuit – breaker meets the requirements according to IEC 62271-100

The rated normal current is 1250A for FPS.

FUNCTIONAL VALUES

SF6 circuit – breaker type FPS 3625D (36KV) with operating mechanism type
BLRM

Closing time max . 85 ms

Opening time max . 55 ms
ON – OFF time *) max . 64 ms

Resistance of the main circuit across the breaking unit :

Max. 35 µ at rated current 1250A.

*) ON-OFF time means the time during which the main contacts are closed at
closing operation when the tripping impulse is connected in simultaneously, via
the auxiliary contact.
 INSTRUCTION MANUAL RB360093E

TYPE OF LUBRICANTS FOR SWITCHING DEVICES

As a guide to the selection of lubricants and oils, a description is given below of
the range of application together with a list of suppliers arranged in alphabetical
order and their trade names.

Oil “A” :
Thin lubricating oil for precision parts in operating mechanisms and air_blast
circuit_breakers. Also for relubricating of bearings, which can not be lubricated
with grease G without dismounting – e.g. links and link gears. Viscosity at 50°C :
8±2 cst.
Oil “C” :
Circuit-breaker oil with viscosity ~17 cst at +20°C . Suitable only for
temperatures> -10°C.
Oil “D”:
Circuit-breaker oil with viscosity ~ 6.0 cst. At +20°C. shall also be used as oil in
dashpots. For dashpots with the letter “S” stamped on the cover – oil “S” shall be
used.
Oil “S” :
Silicon oil intended for oil dashpots with the letter “S” stamped on the cover
shall be filled with this oil.
Oil “A” Oil ”C” Oil “D” Oil “S”
ABB NO. 1171 2039-1 1171 3011-101 1171 3011-102 1173 7011-106
Mobil Mobil 1 (481127) Energol ISH-V Circuit-br.oil -
5W-30 Univolt N61 Univolt42 (44) -
Castrol Formula RS 5W-50 - - -
- - -
Shell TMO synthetic NYTRO 10X Nyswitcho 3 and 3X -
5W-30 - - DC200Fluid200CS
- Cicuit-br.oil A65
Ok Super synthetic - Kälte schalteroel X
5W-30 -

NOTE ! Oil “B” is from 1986-10-01 replaced by oil “A” .

Grease “G”
Low temperature grease for all types of bearings, grease and worm grease as
well as valves in air-blast circuit-breakers. Also suitable for lubrication of
silverplated contacts in air (e.g. contacts in disconnectors).
 INSTRUCTION MANUAL RB360093E

Also used when greasing 0-rings made from nitrile rubber and as a crevice
corrosion prevention in circuit-breakers type HPL.

Grease “N”
For lubrication of moving contacts SF6 –insulated circuit-breakers (e.g. puffer
cylinders).

Avery thin layer of the grease shall be rubbed on the sliding surface of the
contacts.

Grease “L”
Low temperature grease specially suitable for lubricating of fine mechanics – e.g.
catch devices in operating mechanisms which shall operate in strong cold.

Grease “G” Grease “N” Grease “L”

ABB NO. 1171 4014-407 1171 4016-606 1171 4016-606
ASEOL AG ASEOL SYLITEA 4 018
GULF 718EP Synthetic grease
MOBIL Mobil grease 28
SHELL Aero shell grease 22
Montefluos S.P.A Fomblin OT 20

LOCKING LIQUID FOR THREADS

As a guide to selection of locking liquids, a description is given below of the range

of application and supplier.

Pre – treatment of surfaces: the surfaces shall be free from oil, grease, wax, paint
and rust – preventive. Locking liquids “B”, “C” are designed for use on oily
surfaces also.

Locking liquid “B”: Medium strong locking of threads and

sealing of screw and nuts.

Locking liquid “C”: Strong locking and sealing of studs and bolts
up to M36. Difficult to dismantle.

ABB nr Liquid “B” Liquid “C”

Loctite ltd Loctite 243 Loctite 270

GENERAL INSTRUCTIONS FOR MAINTENCE OF FPS 3625D CIRCUIT

BREAKER

Contents:
 INSTRUCTION MANUAL RB360093E

1. Safety precautions
2. Cleanness
3. Cleaning
4. Waste disposal
5. Emptying of gas

1
Safety precautions
Follow the local high-voltage safety regulation.
Put the breaker in the open position.
Disconnect and earth the high voltage side.
Disconnect the operating voltage.

Work on the insulators of the breaker or live parts as well

as transport and dismounting of complete breaking poles
may not be down before the breaker is emptied till a max.
Pressure of 0.125 Mpa abc. Before the opening of the
normally pressurized vessel, it shall be done through a dust
and absorption filter. See under clause “ Emptying of gas “
( page 7 ).

2
Cleanness
Very high dielectric requirements are placed on the SF6-gas
and on the insulating parts and correspondingly also on
their cleanness and dryness.

On all work on the open circuit - breaker be aware that not

only dirt but also air moisture and hand perspiration are
delete roués.

If for any reason gas spaces or parts thereof should be

exposed to the air humidity for longer than 24 hours, these
gas space are to be closed temporarily and filled with SF6
gas to p abc = 120Kpa (1.2 bar ). Single parts are to be
sealed in plastic bags and kept in storage.

Unused SF6 gas is non–poisonous, odorless and colorless.

However, it is heavier than air and with substancetial
outflow it gathers easily in low situated spaces like cable
trenches, tanks and such.
 INSTRUCTION MANUAL RB360093E

With large amount of SF6 in these spaces, there is a risk of

suffocation due to lack of oxygen.

Only perform overhaul work with adequate room

ventilation.

The decomposition products whoth are formed in the

breaking elements are in combination with humidity
corrosive and can cause skin-,eye- and internal cleaning of
the breaker, a close fitted mask with a filter against fine
dust and acid gases, protective plastic or rubber gloves and
long sleeved overall shall be used.

The dust (decomposition products), that is formed in the

breaker, shall be sucked with a vacuum cleaner provided
with a dust filter and wiped off with a cloth that is sprinkled
with ethanol or toluol.

Drying cloths, protective gloves and vacuum cleaner bags

shall be rinsed carefully with plenty of water.
3
Cleaning
A. insulator with paint-treated plastic outside surface,
silicon rubber sheds or porcelain insulator.
Rinse the outside surfaces thoroughly with water and let it
dry well before the breaker is opened.

The end- and inside surfaces are cleaned wirh a non fluffy
drying cloth soaked with ethanol.

Cleaned insulators must be touched only with clean

protective gloves ( plastic or rubber ).

Cower the end surfaces of the insulators with a strong

plastic foil to protect form recontamination.

B. Single parts

Vacuum immediately after disassembly with a vacuum

cleaner with a fine dust filter. Wipe of persistent dust with a
non fluffy cloth.

Remove stubbornly adhering dust with a cloth soaked with

ethanol.
 INSTRUCTION MANUAL RB360093E

Cover cleaned details with plastic foil or put in plastic bag.

Details from spaces not filled with SF6 are cleaned with
ethanol and then left to dry in the air. Then they are packed
in plastic bags.
4
Waste disposal
All the dust as well as the used absorption agent is stored in
a sealed container and is disposed off as chemical waste
according to the valid provisions. During waste disposal
and handling with decomposition products, it is necessary
to wear protective gloves.

5
Emptying of gas
The breaker is evacuated by means of the gas treatment
equipment, that purifies and compresses the gas, So that it
can be reapplied.

Mixed gas – SF6 + N2 – can only be reapplied if the mixing

conditions are under control.

After the evacuation, the breaker is filled with nitrogen up

to atmospheric pressure and after this evacuated again. In

this way the eventual free drifting dust in the breaker is

removed.

Finally the breaker is filled again with dry nitrogen up till

atmospheric pressure after which it is ready for
dismounting and transport till the workshop.

NOTE

If work on the circuit- breaker only affects the outside of

the breaker, for example cleaning of the insulators it is
sufficient to empty the breaker down to a pressure of 0.125
Mpa abs. After the work is done, the breaker is refilled up
to the normal working pressure.

GOODSMARKING AND TRANSPORT

6
Goods marking
INSTRUCTION MANUAL RB360093E

Each case is marked with case number four sides and gross
weight is on two sides.

The case number and gross weight is painted in black

directly on the case.

A label with the following information is attached on two

sides of the case:

- Customer
- Order reference
- Destination
- Country
- Case number
- Gross weight

In addition to the above, each case is marked, when

applicable, with the following instructions, which should be
observed while choosing conveying equipment:

- The instructions on the transport units (e. g. weight,

glass, center of gravity etc, see fig. 1)

- Glass, porcelain, handle careful

- Up

- Put the lifting slings here (see fig 2)

DO NOT TILT
MORE THAN 45
- It is not allowed to tilt the transport until
more than 45 degrees

- Centre of gravity

- Must be protected from moisture and rain

 INSTRUCTION MANUAL RB360093E

Figure 1 transport unit

Transport
The circuit- breakers and disconnectors should be
transported in their transport units, and particularly never
be transported unpaced.

The unit should be transported in such a way that are

- Prevented from standing in water

- Not exposed to rough handling and damages
- Covered by at least tarpaulin, protected against water

Every transport unit must be fixed during the transport.

The tying must be so arranged that the transport units can
not move in any direction. Velocity should be adapted to the
road conditions. Violent acceleration or retardation can
cause damage to the contents without damaging the
packing.

Lifting
Before lifting, the symbols on the transport unit (such as
center of gravity, eight etc) should be observed. The
transport units should be lifted with lifting machine
provided with forks or slings (see fig 2). If a crane is utilized
slings should be used. The units may not be rolled or
dropped from the conveying or lifting equipment.
INSTRUCTION MANUAL RB360093E

Figure 2 lifting a transport unit

Lifting the operating mechanism out of the transport unit

The operating mechanisms BLG 350 should be lifted in the

roof eye-bolt, which is connected to the framework within
the cubicle. The BLK , BLG 1000,FSA and BLRM should
be lifted by the lifting devices on top of the cubicle. Lifting
slings should never be used around the operating
mechanism (see fig 3).

Figure 3 lifting the operating mechanism

Lifting the breakers and disconnectors out of the transport

units
 INSTRUCTION MANUAL RB360093E

Lifting the breakers and disconnectors out of the transport

units is only necessary just before erection (see product
information, which can be found in the cubicle of the
operating mechanism). If they are going to be stored, see
“Storage prior to erection “, Info. NO. RB36 722E-35.

Stacking
Transport units with different widths may not be stacked
(the pressure may break the cover of the lower transport
units). It is not allowed to stack more thane three transport
units. It should be noted that stacking causes sideways
instability, and therefore the load has to be fixed, i.e.
prevented from dropping, rolling or falling.

Figure 4 Stacking
 INSTRUCTION MANUAL RB360093E

STORAGE PRIOR TO ERECTION

General
Circuit breakers and disconnectors intended for outdoor
operation are generally delivered in units which are
determined for transport reasons. Intermediate storage of
these units should be avoided. If it is not possible to avoid
intermediate storage, they should be stored indoors or
under a roof. They must also be stored above ground level
to prevent water damage. On arrival it is important that
plastic sheetings are removed in order to prevent corrosion
by condensate water (except for the spare parts; see
separate instruction).

Storage in a humide climate without proper ventilation may

lead to a discoloration of the galvanized surface. This
discoloration is commonly known as “white rust” consisting
mainly of zinc oxide and zinc-hydroxide and is a result from
a chemical process between the pure zinc on the surface and
humidity.

The long term corrosion protection is not influenced, as the

iron zinc layer below the surface remains unaffected. The
presence of white rust is no reason for rejection of goods
according to Swedish standards.

On arrival, each unit should be chacked in the following

way:

- Delivery is in accordance with order and delivery

documents
- Any damage in delivery, and material loss

In cases where damages are detected or suspected, the units

should be opened and damages should be photographed.
Both damages and shortages should be reported.

All details should be rationally stored so that they are

always available. In general, all material should be stored in
an approved storage (note 1), exceptions are given in the
text below. The ambient air should not be heavily
contaminated by dust, smoke, corrosive or combustible
gases, vapors or salt, otherwise the equipment has to be
cleaned before erection.
 INSTRUCTION MANUAL RB360093E

For storage the original transport unit may be used, but the
plastic sheeting should be removed. The coupling joints of
the assemblies, as well as all connections, are fitted with
transport covers or protective caps which shall not be
removed until immediately before erection.

Operating mechanism (for circuit breaker)

The operating mechanism should be unpacked on arrival
(see “lifting” in the “transport” instruction info No. RB36
722E-34). If it is not going to be stored in an approved
storage (note 1), the heating elements must be connected
supplied permanently with power to protect the control
equipment from corrosion or freezing damages.

Before delivery from the factory a thin layer of the mixture

of white spirit and rust protecting grease type G is sprayed
into the interior of the operating mechanism. If corrosion
has occurred, the rust stains should be sandpapered away
and new rust protection should be painted or sprayed on.
Grease G or tectyl 506 (art no. 1241 0011-108) (note 2) is
recommended (see product information).

Circuit breakers
The breakers should be stored in their original transport
unit, where they are well protected from damages. The units
shall be prevented from standing in water. The breakers
may be stored outdoors, except for the fp-breaker, which
should be stored in an approved storage (note 1). If the
breakers are stored outdoors they should be covered with at
least a tarpaulin.

The tarpaulin should not be placed directly onto the

galvanized surface. It should be left an air gap to prevent
condensation. Condensation that may occur should be selves
draining.

For the outdoor breakers the minimum allowed ambient

temperature is –300C, (since the transport pressure in the
SF6-breakers is lower than the operating pressure). For the
indoor breakers the minimum allowed ambient temperature
is -50C.

Spare parts
The spare parts shall be stored indoors in an approved
storage (note 1), in their original units. This in particular
valid for rubber parts (sealing etc), which also have to be
 INSTRUCTION MANUAL RB360093E

protected against light and sun, in order to prevent them

from drying. Gaskets can only be stored during limited
periods, so avoid storage of these parts. Structures my be
stored outdoors.
Note 1: We define an approved storage as a storage with
- Roof
- Solid ground
- Moisture of air less than 50%
- Temperature 200C (+/- 100C)

Note2: Tectyl 506 develops after drying a wax-like

protection film and may not be sprayed into the bearing
and catch mechanisms or onto gear wheels and chains.
During a rust protection treatment the sliding clutch and
the catch devices in the operating mechanism should be
protective means. Instead of grease G, shell’s grease 22 or
Mobil, s 28 may be used.

SF6-GAS CIRCUIT –BREAKER TYPE FPS 3652D

Rated voltage 24 – 36KV
With operating mechanism type BLRM

INSTRUCTION FOR ERECTION, OPERATION AND

MAINTENANCE.

Contents
1. General
2. Construction
3. Function
4. Erection
5. Commissioning
6. Troubleshooting
7. Maintenance
8. Appendix

1
GENERAL
 INSTRUCTION MANUAL RB360093E

1.1
Validity
These operating instructions are applicable for medium
voltage circuit – breaker type FSP 3625D

1.2
Specifications
Specifications are contained in these instructions are
schematic diagrams contained in these instructions are
schematic diagrams and serve to illustrate functional
relationships. Fig(1/1)
1.3
Masses

Item Total masses Command Erection Gas

Weight (Kg) 397 Kg 103.5 Kg 113 Kg 0.600 Kg

2
Construction (Fig2/1)
The circuit -breaker consists essentially of:
- Three breaker poles . . . .
- Support frame
- Control cubicle with spring operated mechanism and
connecting rod . . .
- Density monitor . . .
- Breaker support . . .
2.1
Breaker pole (Fig 3/1 , a,b)
The circuit breaker consists essentially of:
- Upper terminal flange, . . .
- Insulator for breaking chamber, . . .
- Fixed contact compel. . . .
- Moving contact compel . . . .
- Lower terminal flange . . . , post insulator
- Link gear . . .

The poles are filled with SF6- gas and connected to header
block by means of pipelines . . .
2.2
SF6 gas supply system (Fig 2/1)
The gas supply system consists of:
- An SF6 gas density monitor item2 with header block
item3
- Non return valve item3
- SF6 gas line item10,11 and 12
3
 INSTRUCTION MANUAL RB360093E

FUNCTION
3.1
Control and monitoring (Fig 3/2)

The schematic diagram of the control shows how the

switching commands enter the circuit breaker control
circuit, which monitoring elements are installed to detect
any occurring failures are there by triggered.

The control circuit itself can be seen the order-related

circuit diagram.

Monitoring elements:
- SF6 gas density:
The density monitor 10112 (temperature – compensated
pressure monitor) monitors the SF6 gas pressure in the
breaker poles and issues via its auxiliary contactor the
signal “Filling of SF6 gas” in the case of minor gas losses.
3.2
Switching operations (Fig 3/1 a,b)

3.2.1
Starting conditions
- SF6 gas filled to nominal pressure.
- Operating mechanism in breaker position b2 (Fig
2/1),which means close – spring tensioned and in OPEN
– position.
3.2.2
“Closing” (Fig 3/1 b)
- To close the circuit breaker a “CLOSE” control element
is actuated, where by the spring operated mechanism is
released. Via the mechanical transmission the operating
mechanism moves the moving contact upward, there by
first closing arcing contact “g – h”, and then main
current contact “K –L”.
3.2.3
“Opening” (Fig3/1a)
- To open the circuit breaker an “OPEN” control element
is actuated, where by the spring operated mechanism is
released. Via the mechanical transmission the operating
mechanism moves the moving contact downward, there
by first separating main current contact “K – L”, and
then arcing contact “ g – h”. During this movement the
piston compresses the SF6 gas in the cylinder. The arc
between the contacts increases the compression
 INSTRUCTION MANUAL RB360093E

pressure. In the area of the current zero a gas flow

occurs which extinguishes the arc.
4
ERECTION
4.1
General
- All adjustments are made in the factory. All moving
parts to be coupled are already positioned correctly and
fastened.

- It is advisable to keep the transport packing of the pole

columns, there by facilitating eventual transport on
subsequent overhaul work.
- The breaker poles are filled with insulating gas as
nominal gas pressure
Pabs =0.45Mpa(=3.5bar = 50.8 lbf/inm2)
4.1.1
Preparations for erection
The following shall be prepared and provided before
erection:
- An erection crane with a carrying capacity of about 500
Kg (=840Lb) and a crane hook height of at least 4 m
(=13ft) above the floor.
- Lifting ropes
- Dimension drawing, erection drawing and circuit
diagrams
- Circuit breaker material according to the erection
drawings
- Torque wrench for rang of 6…200 Nm and socket tool
24mm (conn. 3/8”).
- Open – end wrenches for bolts M6 –M16 and ½” UNC
and open – end wrench for 36 mm.
- A thermometer for ambient temperature.
- An SF6 –gas filling equipment, arc. No. 5439 027 – G
and an SF6 – gas tube. If already there is a BBC – gas
filling equipment an adapter art. No. 5439 027 – AA is
needed.

Filling with SF6 – gas:

When filling with SF6 – gas you need a gas filling
equipment, art. No. RB36 027-G, which contains a pressure
reducing value, a hose and couplings.

Filling with mixed gas:

 INSTRUCTION MANUAL RB360093E

When filling with mixed gas you need a gas filling

equipment, arc. No. 5439 027 G for the SF6 – gas and also a
pressure reducing value, art. No. 5439 027-K for the N2 – or
CF4 – gas.

- SF6 leak detector

4.2
Erection procedures
- Lift the complete assembled circuit breaker with the
crane, according to fig. 4/2.
- Check the SF6 gas pressure by pressing the disc of the
check value inwards with a pin of approximately Ø5. A
distinct hiss shall then be heard. If there is no hiss the
pole has a leak, which must be attended to.
- Place supports item8 on the prepared foundation. The
upper bearing surfaces for the pole support must be in
one level and horizontal. Screw supports tight to the
foundation (observe MD) (Fig2/1).
- The exact location can be obtained from the installation
layout plan. During the erection make sure that the
fixation holes for the earthing connection are positioned
correctly (Fig 2/1).
- Mount frame item6 with assembled poles item32 on
supports 10172 with fasteners item 17,18 and 22.
Observe MD, fig 2/1 .
4.2.1
Mounting of spring operated mechanism BLRM (Fig 2/1)

- place the cubicle in correct mounting position between

the supports on wooden under layments.
- Pull operating mechanism with the 4 upper eyes
upwards, insert stay bolts in the holes provided for them
and fasten with accompanying fasteners “h”, observe
MD.
- Be careful! The upper joint head of the connecting rod
must be inserted into the fork of the actuating lever
item5.
Attention!
When lifting, the upper joint head of the connecting rod
must be inserted into the fork of the actuating lever item5.
4.2.2
Fitting of connecting rod
Starting conditions:
Position indicator and spring tension indicator indicate
position “b1” and “Untensioned” (Fig 2/1)
- The operating mechanism and the circuit breaker are to
be coupled together in the OPEN position.
 INSTRUCTION MANUAL RB360093E

- Turn actuating lever on breaker all the way in the

direction of the operating mechanism. For correct
position see Fig 4/1 b .
- The connecting lever on breaker all the way in the
factory.
- If the bores of the actuating lever and the joint head do
not correspond, the connecting rod length must be
corrected.

- This is done by releasing the lower fasteners “28” (Fig

2/1), and then lower the cubicle enclosure.

- Release locknuts item “11” and “14” of the connecting

rod (fig 4/1b) turn connecting rod, hold against turning
and tighten locknuts (MD = 190Nm).

- Adjust connecting rod so it can move freely in the joint

heads. Treat the cylindrical pin in the upper coupling
with grease G (Mobile Grease 28).

- Lift cubicle enclosure and fasten with the lower

fasteners item“28”.
4.2.3
Fitting of density monitor and matching cables
Connection of density monitor item 2 , matching cables and
possible pressure gauge according to fig. 2/1

4.2.4
High – voltage connections (Fig 2/1)

The high – voltage connection fasteners consist of bolts M12

(st.8.8) and at least 1 washer 13/28*3 mm and 1 lock washer
13.5/28*1.6 mm on each side of each bolt (observe MD).
5
COMMISSIONING
All data which are checked or measured are to be entered in
a commissioning record and kept for later comparisons.

The SF6 gas pressures can be seen on the circuit breaker

nameplate.
5.1
Starting conditions
 INSTRUCTION MANUAL RB360093E

The erected circuit breaker is isolated from the high –

voltage system and earthed according to regulations.

The control current circuits are connected to the low –

voltage system.
5.2
Function test

Check correspondence with the customer – related diagram

and that the connections been made correctly. Then the trial
switching can be performed from a protected position.

The trial switching my only be performed if:

- the circuit breaker is isolated from the high – voltage
system and earthed according to regulations,
- The SF6 or the mixed gas is at nominal pressure,

- The spring tension indicator of the spring operated

mechanism indicates the position “b2” (fig 2/1)
“tensioned”.

5.2.1
Trial switching operations (fig 5/2 a,b)
The operating times are measured. The diagram of a
standard measuring arrangement is shown in fig 5/2a. Every
breaker pole has its own measuring circuit. The time
diagram in fig. 5/2b
Serve solely for explanation of the time concepts used.

- Closing (C) ( Fig. 5/2b)

The closing time “t1” <= 85 ms is the time from the
moment the command is issued until the contacts in the
arcing chambers touch. It is to be measured on every
breaker pole. The maximum allowable non-simultaneity
between the breaker poles is t1<= 5ms.

- Opening (O) (Fig.5/2b)

The opening time “t2” <=55ms is the time from the moment
the command is issued until the contacts in the arcing
chambers separate. It is to be measured on every breaker
pole. The maximum allowable non-simultaneity between
the breaker poles is t2<= 5ms.

- CLOSE-OPEN switching (C-O) (Fig. 5/2b )

The close-open time “t3”<= 64ms is the time from the
moment the contacts touch until they separate in the arcing
chamber in a “CLOSE-OPEN” switching operation. For
 INSTRUCTION MANUAL RB360093E

the measurement the terminals “K1” and “K2” on the

close-open switch “M3” (Fig. 5/2a) are short circuited.

- Rapid reclosure (O-C-O)

The rapid reclosure can only be tested with the test
equipment of the installation.
5.2.2
Anti-pumping device (Fig. 5/2a)
- Issue a CLOSE command by applying a control voltage
to terminal 2. leave the voltage applied.
- Issue an OPEN command by applying a control voltage
to terminal 6.

After the interruption by the OPEN command still being

present.
5.2.3
Check of heaters
Measure the resistance or apply voltage and measure the
current. When the thermostat-controlled additional heater
is installed, check the adjustment of the thermostate.

5.3
Concluding work
- Remove all test and measurement equipment.
- Connect the circuit breaker to the high-voltage power
lines.
- Make sure that the safety regulations have been
followed.
- Take the breaker into service.

6
TROUBLESHOOTING
Before any activity is started, the circuit breaker has to be
isolated from the high-voltage system and earthed
according to regulations. The control and heating voltages
must be interrupted.
6.1
SF6 gas supply system
- when the signal “filling of SF6 gas” is given the gas
pressure has to be checked and insulating gas added.
The correction can also be done while the breaker is in
service. If the density monitor responds in spite of
nominal pressure being present, the density monitor has
to be checked.
- If leaks are suspected in the SF6 gas system, proceed as
follows:
- SF6 gas pipes
 INSTRUCTION MANUAL RB360093E

Check all screwed and brazed joints with a leak

detector. Replace faulty brazing and fittings. Tighten
leaking screwed connections.
- Casting details (mechanism housing joints are to be
checked with a leak detector. In the case of major
leaks it is recommended that the leaks located using
soapy water.
- Check SF6 gas humidity (dew point)

6.2
Control circuits
If a switching command is delayed, or executed only
partially or not at all, proceed as follows:
- Interrupt control and heating circuits.
- Check the electrical terminals in the control circuits for
tightness and proper connection.
- Compare wiring with wiring diagrams and correct if
necessary.
- Check coils of solenoid valve and if necessary change
defective coils. The cause of the overload has to be
established and eliminated.
- Switch on and check control voltage
- Switching or blockings occur in the wrong pressure
ranges.
- Check the function of the circuit breaker when the
density monitor is disconnected. When it is confirmed
that the density monitor is defect it has to be replaced.
7
MAINTENANCE (OVERHAUL)

7.1
Maintenance concept
The maintenance includes inspection and over work.
Inspections are performed in time intervals, while overhauls
are duty-related.

Overhaul work and special contact overhauls should be

done in closed, dust-free rooms.
7.1.1
Overview of inspection work to be performed

Object Inspection interval Inspection work to be

Occasionally, at least Every 5 years performed
once per year
Circuit - Number of CO
breaker ----------*---------- ---------*---------- switching operations
- Functional test
 INSTRUCTION MANUAL RB360093E

according to section 5.2

7.2
Overview of overhauls to be performed

Object Number of Number of Electrical

switching cycles switching cycles switching duty as
>= 2500 (co) >= 5000 (co) shown in Fig. ___
Breaker pole ---*---- ----*---- ----*----
Spring operated ---*--- ---*---- -------
mechanism
Crank mechanism ------- ---*---- -------
Seals ------- ---*---- -------

7.3
Procedures
7.3.1
General
Maintenance includes inspection and overhaul works as
described in the maintenance concept, section 7.1 of these
instructions. Overhaul work in general, and contact
overhauls in particular, should only be done in closed rooms
which are as dust-free as possible.

As general rule, in overhaul work all uncovered sealing

elements and disassembled spring washers and retaining
rings are to be replaced.
7.4
Preparations for overhaul
7.4.1
Taking the circuit breaker out of service
- Switch circuit breaker to position “b1” (untensioned and
OPEN) (Fig. 2/1).
- Open associated high-voltage disconnectors.
- Turn off control-, signal-, motor- and heating voltages.
- Earth high-voltages lines on both ends according to local
regulations and isolate from the installation.
- Remove control-, signal-, motor- and heating-lines
(disconnect)
- Reduce SF6 gas pressure for the transport to the service
room to Pabs =125kpa (=1.25 bar) = 18.125 lbf/in2).

7.5
Removal of breaker poles
7.5.1
Dismantling of the SF6 pipes
 INSTRUCTION MANUAL RB360093E

After loosening the fastening bolts of the SF6 gas supply

system the whole system can be moved longitudinal. The
clamp nuts of the check valve,s thread is visible. Move the
pipe-system sideways so the stop is in the clamp nut. In this
position all the three check valves are closed and the clamp
nuts can be totally loosened at the same time as the pipe-
system is moved further sideways.
7.5.2
Removal of breaker poles item 26 with link gear item 8.(Fig .3/1 a,b)
Remove outer breaker poles
- Fasten crane rope beneath upper flange of the breaking
chamber insulator and lightly tension crane rope.
Remove fasteners item 17 , 18 , 22 (Fig. 2/1).
- Move breaker poles away to the side. The coupling shaft
item 9 (Fig. 2/1) will slide out of the coupling sleeve item
14 . transport to the service room and place on a
mounting block (provided by the customer).

Dismantling of middle breaker pole.

- Withdraw coupling shafts item 2.

- Remove connecting rod “item 33” (Fig. 2/1).
- Fasten crane rope beneath upper flange and tension
crane rope lightly. Remove fasters item 17 , 18 and 22.
- Withdraw breaker pole upwards and transport to the
service room.

7.6
Disassembly of breaker pole (Fig. 7/2a)
- Place breaker pole on the mounting table. Fastening
points are the upper flanges of the post-and breaking
chamber insulators and the adapter plate item 1.
- Remove screw item 7 , hex nut , item 3 and washer item
4 and take off the cover item 12.
- carefully lift the flange item 24 with the fixed contact.
- Place the flange on a safe surface and be careful with
the O-ring slote.
- Support link gear item 8 on suitable wooden base, screw
off and pull out as far as possible.
- Hold actuating rod attachment item 19 from turning
with open-end wrench ws 28mm, release locknuts item
20/21 and turn adjusting screw item 23 until it releases
the operating insulator socket item 19 and the linkage
joint item 22. completely remove link gear 10185.
Remove the o-rings item 10 and item 11.
- Remove the fasteners that keep the breaking chamber
insulator, terminal flange and post insulator together.
 INSTRUCTION MANUAL RB360093E

Take off the breaking chamber insulator. Remove the

moving contact and place on a wooden surface.
- Withdraw pin item 25 and operating insulator socket
item 19 out of operating insulator item 18.
- Screw set screw item 27 with lucknut item 28 out of
adjusting ring item 26.
- Drive out flow direction tube base item 17 with
disassembly rod and adaptor 00104 (Fig.7/2b). Remove
pin item 6.
- Remove screw item 2 and washer item 4 and dismantle
the post insulator from the adapter plate.
- Release screw item 15 and remove desiccant container.
Dispose of desiccant containers according to local
regulations.
- The sealing surfaces of the insulators and link gear
housing and the o-ring slots in the flanges may not be
injured.
7.6.2
Disassembly of fixed contact according to (Fig. 7/3)

7.6.3
Disassembly of moving contact according to (Fig. 7/4)

7.6.4
Cleaning
- clean all parts according to pertaining treatment
instructions, RB36 719E-2.

7.7
Overhaul of the assemblies

7.7.1
Overhaul of fixed contact according to (Fig. 7/3)

7.7.2
Overhaul of moving contact according to (Fig. 7/4)

7.7.3
Overhaul of link gear (Fig. 4/1a, 7/5)
 INSTRUCTION MANUAL RB360093E

- Remove fasteners item 17,18 or item 16 and item 20 with

shaft guard item13 or cover item 16 and disassemble
completely.

- Push out shaft item 4 and lever item 5 with linkage joint
item 6 .

- Remove socket head screw item 7 with washers item9,

item 18 and pull out joint pin item 8.

- Replace following parts:

- O-ring item 10
- X-ring item 3
- Sealing ring item 13
Clean the metal parts which are not replaced.

- Assembly in reverse sequence to above disassembly.

Grease G (Mobil Grease 28).
Do not injure sealing rings on the splining.
Treat joint pin item 8 with grease G.
Observe MD.

Attention!
Make sure that the punch marks are aligned with one
another “e” (Fig. 7/5).

- Treat outer diameter “c” with grease G and mounting

surface “a” of the cover item 16 with grease “S”
(fluorsilicon grease).

7.8
Assembly of breaker pole (Fig. 7/2a)
Mounting of operating insulator item 27 on moving contact

- Install snap ring item 28 in groove of flow direction tube

base item 11.

- Install flow direction tube base item 11 with snap ring

item 28 into flow direction tube item 17 to such depth
that the pin item 26 can be inserted.

- Slide adjusting ring item 10 over flow direction tube

item 17.

- Slide operating insulator item 27 with screen item 29

over flow direction tube. Insert pin item 26. the pin bore
INSTRUCTION MANUAL RB360093E

must be direction tube base item 11 in pin item 26 all the

way through the window in the direction flow tube
item17.

Check: The actuating tube base must completely clear

the window.

- Bring the adjusting ring item 10 into position such that

setscrew item 19 can be screwed into the bore in the flow
direction tube item 17; tighten setscrew item 19 and
locknut item 18 and secure with locking agent “B”.
Observe MD.

- Install the operating insulator socket item 20 and pin

item 21 in operating insulator. The pin bore must align
with the operating insulator.

Installation of moving contact item 7 on the terminal flange

item 16:

- Assemble the breaking chamber insulator and the

flange and try to center the moving con tact in the
insulator.

- Pass the post insulator on the operating insulator and

mount the two insulators against the flange with
fasteners item 2,3 and 15 (Fig 7/2a).

- Attach a new desiccant container to the adapter plate

item 23 (Fig 7/2a) with screws item 19 (6Nm) and secure
with locking agent “B”.
Determination of adjusting dimension “A” between
operating insulator socket item 20 and linkage joint item 3
(Fig. 7/2c):

- Calculation formula for dimension “A”

A = Y – X – 45 mm ( = 1.77 in).

- Adjust compass 00115 to dimension A.

Installation of fixed contact compl. Item 6, see Fig. 7/2a.

INSTRUCTION MANUAL RB360093E

- Treat the O-ring slot on the upper terminal flange, item

5 and the two O-rings with grease “S” before placing the
O-rings in the slot.

- finally treat the O-rings and the slot on the upper

terminal flange with grease “S” and mount the cover
2531 864-12 with screw and washer 2121 2017-493 and
2151 2061-173 (MD = 45 Nm).

Mounting of link gear 10185 (Fig. 7/2a):

- Pull operating insulator 10049 into position “OPEN”.

- Treat the O-ring slot in the adapter plate and the O-

rings with grease “S”. place the O-rings in the slot.

- Place link gear 10185 at a distance of approx. 50mm ( =

1.97 in) in front of lower flange of the post insulator.

Screw adjusting screw 2121 769-27 with hex nuts 49586

and 49695 screwed all the way back simultaneously into
thread of operating insulator socket 2184 4436-3 and of
linkage joint 10043 (only one rotation).

- Screw adjusting screw 2121 769-27 into dimension “A”

with adjusted compass 00115 and secure on both ends
according to Fig 7/2c with grease “S” (fluorsilicon
grease).

- Treat sealing surfaces with fasteners 2126 2013-122,

2151 2063-179 and secure with locking agent “B”
(observe MD).

- Gas filling

After that the breaker has been reerected, after revision or

repair, it shall – before trial operation – be filled with SF6 –
gas.

Evacuate till a pressure of 1 mbar and continue with

pumping at least 1 hour from the moment the pressure of 1
mbar is reached.

Break off the evacuation and fill the breaker with dry, clean
nitrogen up tillo atmospheric pressure of 1 mbar alone for a
few hours.
 INSTRUCTION MANUAL RB360093E

Evacuate again till a pressure of 1 mbar and fill the breaker

with clean SF6 gas up till 0.125 Mpa abs. Observe the
security precautions for gas filling.
7.9
Erection of breaker poles (Fig. 4/1a,b)

- Bring middle breaker pole all the way into the OPEN
position, place on actuating lever 10154 in correct
position according to punch marks “a’ (Fig. 4/1b). lower
pole onto support frame 10161 and insert connecting
rod joint head in actuating lever fork. The operating
mechanism must be in the OPEN position. 89026 and
tighten only lightly so that the breaker pole can still be
turned easily in the screw clearance. Treat joint pin
10158 with grease G (Mobile Grease 28) and secure with
fasteners 10064, 89224 and 49215 (observe MD). Insert
coupling shafts 10005 into coupling sleeve and actuating
lever. Treat the splines with grease G.

- Bring outer breaker poles all the way into the OPEN
position, and from outside with coupling sleeves
mounted, slide over coupling shafts as far as possible.
Apply remaining fasteners 49063, 49621 and 89026 and
tighten after final alignment of the breaker poles. The
joint heads of the connecting rod must remain movable,
and the coupling shafts axially movable (observe MD).

- The gas nipple are greased with grease G, Mobil Grease

28, see *) Fig.4/1c.

- Let the SF6 gas flow through the gas system through the
header block for about 3 min. let the gas flow when the
system is connected to the non-return valves of the
mechanism housing acc. To fig.4/1c. the clamp nut are
screwed in only to the groove in the check valve,s
thread. Then all the clamp nuts are screwed in totally
simultaneous as the whole system is moved sideways.
Lock all pins. If the connection to the header blockhave
been dismantled, those shall be reasembeled and
secured with locking agent “B”. observe MD. fill with
SF6 –gas till normal working pressure 0.7 Mpa abs.
After finished gas-treatment the nut and O –ring,
10112/c are assembled.

8
APPENDIX
 INSTRUCTION MANUAL RB360093E

8.1
Figures

Fig. Designation

1/1 Nameplate
1/2 Tabulated masses
2/1a Circuit breaker
3/1a Breaker pole (“OPEN” position)
3/1b Breaker pole (“CLOSED” position)
3/2 Schematic control diagram
4/1a Circuit breaker complete
4/1b Connecting rod securement
4/1c SF6gas line
4/2 Transport instructions
5/1 SF6 gas filling pressure diagram
5/2a Measurement layout for function test
5/2b Simultaneity monitoring
7/1 Admissible switching cycles for contact overhaul
7/2a Breaker pole complete
7/2b Tools and overhaul tools
7/2c Length adjustment of moving contact
7/3 Fixed contact
7/4 Moving contact
7/5 Link gear
7/6 Stored-energy spring operating mechanism