DATA SHEET - 245KV GIS 3 X 37 MW SAWRA KUDDU

DOC. NO. SK-GS-03-1169, R0 HYDRO ELECTRIC PROJECT

GUARANTEED TECHNICAL & OTHER PARTICULARS OF 245kV GIS

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
220 kV GIS General
1 Name of manufacture : As per vendor list Hyundai
2 Place of manufacture, inspection & testing : Bidder to furnish Korea
3 Manufacturer's type / designation : Bidder to furnish 300SR
4 Rated voltage : 220 kV 220 kV
5 System frequency : 50 Hz 50 Hz
6 Maximum(continuous)service rated voltage : 245 kV 245 kV
7 Normal current rating
- Generator Transformer feeder circuit : 2000 Amp. 2000 Amp.
- Line feeder circuit : 2000 Amp. 2000 Amp.
- Bus coupler circuit : 2000 Amp. 2000 Amp.
8 Short time current rating
- 1 second rms. : 40 kA 50 kA
- 3 second rms. : 40 kA 50 kA
9 Rated Lightning impulse withstand voltage
- Phase to earth : 1050 kV (peak) 1050 kV (peak)
- Across open contacts : 1200 kV (peak) 1200 kV (peak)
10 Rated Switching surge withstand voltage Bidder to furnish
- Phase To earth : N/A
- Phase to phase : N/A
- Across open contacts : N/A
Rated one minute power frequency
11
withstand voltage
- Phase to earth : 460 kV (rms) 460 kV (rms)
- Across open contacts : 530 kV (rms) 530 kV (rms)
Maximum temperature rise over ambient of As per IEC 694 /40 As per IEC60694
12 :
35.5 Deg C Table 3
deg. C. rating of current carrying parts at 220
Thermal 1 Sec 3 Sec
13 kV for the rated symmetrical short circuit :
current
Altitude upto which the switchgear 2000 m 2000m
14 shall operate satisfactorily :
Ambient conditions of the operation of the GIS - 10 Deg C to 50 -10℃~50℃
15 :
Deg C
16 Earthing details of enclosure : Solidly earthed Solidly earthed
Density and pressure of filling gas in Bidder to furnish
17 various compartments of the enclosure at :
200 C
(i) Compartments in kPa : 500 - 750 Kpa 500kPa
(ii) Circuit Breakers in kPA : 500 - 750 Kpa 700kPa
Features adopted for preventing burn through release of Rupture disc
18 through in the various enclosures of SF6 : pressure relief device /
GIS rupture disc
Time in m sec to withstand an internal As per IEC 300ms
flashover without burn through :

19 Guaranteed life of the GIS : 30 years 30 years

 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
a) Guaranteed number of loaded/unloaded CB - 2000 ( M1) CB: 10000(M2)
operations of various equipments of SF6
20 GIS i.e. circuit breakers, disconnectors, :
grounding switches (please mention item
wise).
*DS/ES/H-ES – DS/ES/HSES: 2000
: 1000 / 2000
b) Max. number of interruptions at rated S.C 10 to 21 Nos. 20 @40kA
current with associated recovery voltage the
:
Circuit Breaker is capable to withstand
without requiring change of any parts.
a) Guaranteed Average leakage of SF6 gas from
21 the equipment and percentage per year.
(i) From complete GIS/ year less than or equal to 0.5
:
1%
(ii) From compartments /year less than or equal to 0.5
:
2%
b) Quantity of SF6 gas required to completely Bidder to furnish Approx. 204kg/bay
charge the 3-pole equipment including any : (without GIB)
tank storage system
c) Quantity of SF6 gas required for Bidder to furnish 84kg/3-phae
largest gas compartment :
d) Operating pressure Bidder to furnish
- Circuit breaker : 6-7 bar 700kPa
- Others : 6-7 bar 500kPa
Details of the features existing in the UHF/ Acoustic UHF sensor
22 equipment to carry out P.D. measurements :
at works/site
Details of the control wiring used in the 2.5 sq.mm, 750V 2.5 sq.mm, 750V
23 :
Equipment
The extent of field welding required for site Bidder to furnish N/A
24 assembly, if any along with the procedure to :
be adopted by the firm at site
Details of the documents, drawings & Bidder to furnish Yes
operating principles of the major
components of the equipment, presenting a
25 :
clear picture of the fundamental principle,
general arrangements and operating
mechanism photographs
enclosed
Details of showing
the flow the basic drgs. Enclosed
diagram/ Bidder to furnish Yes
26 showing all valves and pressures involved, :
for the hydraulic and gas system.
Details of the test data enclosed including Bidder to furnish Yes
test data of the parts indicating the ability of
27 :
the equipment (including high speed
grounding switches)
The values of resistors inserted in the line Bidder to furnish N/A
circuit breaker during closing operations, if
28 :
any, along with the length of time the
resistors are left in the circuit.
Methods adopted to limit switching surges Bidder to furnish N/A
29 for breaker and disconnectors :
Values of maximum switching <2.6 PU <2.6 PU
30 :
surges generated
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
Heat generated in K.W. when the complete Bidder to furnish 14.4
31 switchgear is operating at its rated capacity :

Noise level of Circuit Breaker at a distance of 80 dB 80

32 :
5m from it.
33 Material used in fabrication (Copper, Aluminum, Silver, Stainless Steel etc)
a) Breaker main contact surfaces. Copper with silver Copper with silver
:
plated plated
b) Disconnecting switch contact surfaces. Copper with silver Copper with silver
:
plated plated
c) Grounding switch contact surfaces. Copper with silver Copper with silver
:
plated plated
d) Internal bus. : Aliminum Aluminum
e) Internal bus contact surfaces. Aluminum with silver Aluminum with silver
: plated
plated
f) Bus enclosure. : Aliminum Aluminum
g) Terminal pads. : Tinned copper Tinned copper
Terminal pad contact surface. : Tinned copper Tinned copper
Bellows or compensating units : Stainless steel Stainless steel
34 Operating Mechanism
- Breaker : Hydraulic / spring Motor spring
- Disconnecting switch : Motor Motor
- High speed fault making grounding switch Motor/spring Motor spring
:
charged
-Safety grounding switch : Motor Motor
Time required to recharge the operating Hydraulic - 5 min 15 Sec
35 system to a fully charged condition after four : Spring - 15 Sec
successive operations (without pumping
action)
Details of provisions made for movement Bidder to furnish Platform
36 of maintenance personnel on the : (The location of platform
equipment will be provided at the detail
design stage)

a) Capacitance per meter of the enclosed 50 pico farads/ 60 pico farads/mtre

37 :
bus metre
b) Max. potential rise of enclosure at 50kA Bidder to furnish Below 100V
(ref voltage of low freq) in volts :

c) Bus charging current in amps : Bidder to furnish 0.25A

Surge impedance in ohms of the enclosed 80 Ohm 80
bus (The bidder should furnish the method
38 :
used for the calculations of surge
impedance and capacitance of insulated
bus).
a) Electric resistance at 20 deg C in micro
39
ohms/metre.
- Bus enclosure : 8.3 3.8
- Internal bus : 11.1 12.7
b) Data used for calculation of electric
resistance in (a)
- Cross sectional area of bus conductor : 3043 sqmm 2607
- Cross sectional area of bus enclosure. : 8999 sqmm 7891
-Conductivity of material of bus conductor : 0.03 Ohm sq m /mtr 51%
- Conductivity of material of bus enclosure. : 0.05 Ohm sq m /mtr 40%
-Current density in bus conductor. : 2 A/mm2 1A/mm2
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data

Maximum Guaranteed power losses in the

40 bus bar per single phase meter at rated
voltage and current at 40ºC ambient temp in

a) Enclosure : 25 W 16 W
b) Conductor : 50 W 50 W
41 Dimensions : Bidder to furnish
a) Bus enclosure outside diameter : 322mm
b) Bus enclosure wall thickness : 8mm
c) Internal bus, outside diameter : 93mm
d) Internal bus thickness : 10mm
Weight (The weight of each assembled bay Bidder to furnish
42 to be indicated separately)
a) Generator Transformer Bay : Approx.10,000kg
b) 220 kV XLPE cable feeder Bay : Approx.8,000kg
c) 220 kV Bus coupler Bay : Approx. 5,000kg
d) Bus Bars : Approx. 3,000kg
II Equipment included in GIS
A. Circuit Breake r*
(The following particulars for each type of breaker shall be furnished)
1 Name plate data
- Manufacturer's name : As per vendor list Hyundai
- Type / designation : Bidder to furnish 300SR
- Rated frequency : 50 Hz 50 Hz
- Rated voltage : 220 kV 220 kV
- Rated interrupting current : 40 kA 50 kA
- Number of poles : 3 3
- Class (indoors) : Indoor Indoor
- Number of interrupting chambers per pole : 1 1
- Maximum Operating Voltage Breaking 245 kV 245 kV
Capacity :
Making & Breaking
a) Breaking Capacity
- Rated breaking current : 40 kA(rms) 50 kA(rms)
- Rated breaking MVA (Symmetrical) : 40 kA(rms) 50 kA(rms)
- Breaking time : 60 ms. (approx) 60 ms
b) Making Capacity
- Rated making current : 100 kA 125 kA
- Rated making MVA symmetri cal : 100 kA 125 kA
- making time : 100 ms (approx) 75 ms
c) Max operating time at full rated 60 ms. (approx) 60 ms
interrupted capacity from the instant of trip :
coil energizing
d) Operating pressure kg/cm2
- Components : 6-7 bar 500 kPa
- Circuit Breaker : 6-7 bar 700 kPa
e) Amount of gas (SF6) required for Bidder to furnish 84 kg/3-phase
largest compartment :
f) Amount of gas required to completely Bidder to furnish 28kg/1-pole
change the 8-poles equipment including any :
tank storage system
g) Total length of break per phase : 100-200 mm 123mm
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data

2 Operating voltages of closing/opening coil

- Maximum Operating voltage : 242 V 242 V
- Minimum Operating voltage : 154 V 154 V
- Range factor : Bidder to furnish 85-110%
3 Current ratings
- Rated continuous current at 400C 2000 A 2000/3150 A
ambient temp. :
- Rated interrupting current for 1s, : 40 kA 50 kA
- Rated symmetrical interrupting current : 40 kA 50 kA
- Rated asymmetrical interrupting current : 40 kA 50 kA
- Percentage D.C. component : 40-70% (approx) 70 % at 40kA
- Rated short circuit making current : 100 kA (peak) 125 kA (peak)
4 Rated Insulation level
a) Dry one minute power frequency withstand
voltage
- To earth : 460 kV(rms) 460 kV(rms)
- Across open contacts : 530 kV(rms) 530 kV(rms)
b) 1.2/50 microsecond full wave lightning
impulse withstands voltage.
i) To ground : 1050 kV(peak) 1050 kV(peak)
ii) Across the open contacts : 1200kV(peak) 1200 kV(peak)
c) 250/2,500 microsecond switching Not Applicable N/A
impulse withstands voltage. :
d) Line to ground power frequency 245 /√3 kV 245 /√3 kV
withstand voltage at gas pressure
equivalent to atmospheric pressure :
e) Minimum allowable moisture content 300 ppm / vol. 300 ppm / vol.
in interrupting medium :
f) Total breaking time
i) At 10% rated interrupting capacity : < 50 ms < 50 ms
ii) At 60% rated interrupting capacity : < 50 ms < 50 ms
iii) At 100%rated interrupting capacity : < 55 ms < 55 ms
Maximum temperature rise above ambient at As per IEC
5 rated load and voltage for
- contacts : < 65 deg C < 65
- Hottest part : < 75deg C < 75
- Enclosure : < 40deg C < 40
6 Operating data
- Rated Operating duty cycle : O-0.3s-CO-1min-CO O-0.3s-CO-1min-CO
Line Breakers, Generator Transformers , Shunt
Reactor & Bus Coupler Breakers
- Reclosing duty cycle (Line Breakers) O-3min-CO-3min- CO O-3min-CO-3min- CO
:
- Permissible tripping delay : As per IEC As per IEC
- Maximum arc duration at
a) 10% rated breaking current : < 20 ms < 20 ms
b) 30% -- do-- : < 20 ms < 20 ms
c) 60% -- do-- : < 20 ms < 20 ms
d) 100% -- do-- : < 20 ms < 20 ms
- Closing time : < 100 ms < 100 ms
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
- Total breaking time at
a) 10% rated breaking current : < 60 ms < 60 ms
b) 30% -- do-- : < 60 ms < 60 ms
c) 60% -- do-- : < 60 ms < 60 ms
d) 100% -- do-- : < 60 ms < 60 ms
Arc duration from separation of arc at contact < 25 ms < 25 ms
to instant of arc extinction for full rated
e) interrupting capacity.
- Length of arc at : Bidder to furnish
a) 10% rated breaking current : mm 19.2
b) 30% -- do-- : mm 19.1
c) 60% -- do-- : mm 11.5
d) 100% -- do-- : mm 18.7
e) Max. length of arc at lowest fault current : mm 18.7(L90)
- Longest time To interrupt 'current' less than < 50 ms < 50 ms
25% of rated symmetrical short circuit
current from energizing trip circuit :
- Minimum time from arc extinction To 350 ms 350 ms
Contact remake for auto reclosing. :
- Minimum dead time for
a) 3 phase reclosing : 300 ms 300 ms
b) 1 phase reclosing : 300 ms 300 ms
- Maximum difference of time at opening Not Applicable N/A
of series contacts within one pole
Maximum difference of time at opening < 5 ms 3.3 ms
between phases :
Maximum difference of time at Closing < 5 ms 5 ms
between phases :
Details of the curve enclosed for Bidder to furnish N/A
maximum opening time vs. 3 phase fault
current
Number of interruptions before 36 single pole @ 40 20/ each single phase
scheduled maintenance is required : kA @40kA
Number of mechanical operations 2000 10000
before scheduled maintenance is :
required
Number of interruptions at Rated 36 single pole 20/ each single phase
S.C.current with associated TRV without operations @40kA
changing any parts. :
Description and frequency of Bidder to furnish 30 years
scheduled maintenance required :
Time interval between the issue of
trip command and the instance of
opening of breaker contact
- Recovery voltage rate of rise at
a) Rated symmetrical interrupting current : 2 kV/ms 2 kV/ms
b) 60 percent of rated symmetrical 3 kV/ms 3 kV/ms
interrupting curr ent :
c) 30 percent of rated symmetrical 5 kV/ms 5 kV/ms
interrupting current :
d) 10 percent of rated symmetrical 7 kV/ms 7 kV/ms
interrupting curr ent :
- Amplitude factor : 1.4 1.4
- Phase factor : 1.3 1.3
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
- Natural frequency : 50 Hz 50 Hz
- Devices used for controlling RRRV : *Bidder to furnish N/A
- Devices used for uniform voltage distribution : *Bidder to furnish N/A
- distribution of voltage Across breaks : *Bidder to furnish N/A
- Details of Switching resistors required : *Bidder to furnish N/A
- Preinsertion (on closing) :
- Preinsertion time :
Tripping
Recovery voltage distribution between breaks *Bidder to furnish
in percent of rated voltage :
a) Single line to ground fault : N/A
b) Interruption of short lines : N/A
c)Switching off an unloaded transformer : N/A
7 Details of the operating mechanism
- Tripping coil : Hydraulic / spring Motor spring
- Closing coil : Hydraulic / spring Motor spring
- Number of Closing coils 1/More shall be 1
finalied during details
: engg.
- Number of Tripping coils : 2 2
Hydraulic fluid supply system for mechanical Bidder to furnish N/A
8 operation
- Pump, motor, hp, voltage/Phase and N/A
quantity of motors :
- Storage compartment pressure Kg/cm sq : N/A
- Minimum oil pressure required for N/A
successful i nterruption, breaker rating, :
Kg/cm sq
- No of stored ' close-open operation' : N/A
- Quantity of oil required for one without N/A
pumps operation close-open operation :
9 SF6 gas system
- Normal Operating pressure : 6-7.5 bar 7 bar
- Normal Operating density : 45 - 55 gm/lit 52.51g/cc
- Weight of gas per breaker : during detail engg 28 kg/1-phase
- Lockout pressure : 5.6-6.7 bar 620 kPa
- Alarm pressure : 5.8-7.0 bar 620 kPa
- Whether breakers work at single pressure single Single
or dual pressure :
- Type of SF6 gas flow(axial or radial) : axial Axial
- Type of nozzles (single flow or double flow) : single Single
- Compression ratio for puffer action : puffer Puffer
- Quantity of compressed gas for puffer action : Bidder to furnish 28.2kg
- Total volume of SF6 gas required per Bidder to furnish 0.22kg at open position
circuit breaker at operating pressure. :
- arc monitoring pressure : Bidder to furnish Max. ΔP 50 kPa 0.05MPa
- Fill pressure : Bidder to furnish Rated 700kPa
-Loss of Dielectric : Bidder to furnish 20% loss of dielectric
during the short circuit
10 Control power requirement : current breaking
- Tripping(3poles)current at rated supply 4.0 A 7.5 A
voltage :
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
- Tripping(3poles)current at 70% of rated 2.7 A 5.3 A
supply voltage 220 VDC :
- Closing(3 poles) current at rated 3.8 A 8.1 A
supply voltage 220 VDC :
- Closing (3 poles) current at 85% of 3.2 A 6.9 A
supply voltage 220 VDC :
- Tripping voltage Range percent : 70-110 70-110
- Closing voltage range percent : 85-110 85-110
11 Heaters Bidder to furnish
- Continuously current rating : 0.8 A
- Thermostat power rating : 100 W
12 Noise performance (circuit breaker operation)
- Measurement standard : NEMA NEMA
- Noise level : 80 dB 80
- Distance : 5 mtr 5
13 Interrupters
- Type of main contacts, arcing contacts & multi finger / Multi finger
Aux. Contact : penetrating / others
- Material of main contacts/arcing Yes Yes
contacts, silver coated or not :
- Contact pressure Kg/sq mm : Bidder to furnish N/A
- Number of Interrupters per pole : 1 1
- Break Length of an interrupter : 125 - 200 mm 123mm
- Length of Contact travel : 100 - 200 mm 161mm
- rate of Contact travel at Tripping : 8-11 m/s 5.8~6.0 m/s
- rate of Contact travel at Closing : 2.5-5 m/s 4.0 m/s
- Arcing withstand time : Bidder to furnish 18.7ms
14 First pole to clear factor : 1.3 1.3
15 Whether fixed trip or trip frees : Trip Free Trip free
16 Details of anti pumping device : electrical trip free electrical trip free
17 Rated line-charging breaking current : 125A 125 A
18 Rated small capacitive breaking current : Bidder to furnish 250 A
Rated small inductive breaking current Bidder to furnish 20 A
19 Generator transformer, Line & Bus
coupler breakers, Shunt Reactor :
20 breakercharacteristics for short line fault
Rated : Bidder to furnish L90, L75
a) Rated transient recovery voltage for Bidder to furnish 364
21 terminal faults :
b) Parameters as per IEC : Bidder to furnish 4 parameter
22 Rated value of phase making current : As per IEC 125 kA
Max. interrupting capacity under 12.5 kA 12.5 kA
23 phase opposition conditions :
Capacity for interrupting in-rush current Bidder to furnish 20A
24 of transformer :
Max. over voltage factor of the circuit breaker when
25 switching off
a) Unloaded transformer : < 2.5 < 2.5
b) Loaded transformer : < 2.5 < 2.5
c) Open circuited lines : < 2.5 < 2.5
d) Synchronous system : < 2.5 < 2.5
26 Details of operation counter : Bidder to furnish 9999
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr.
Description of Technical Particulars Requirement Vendor’s Data
No.
No. of auxiliary contacts, their continuous
rating and breaking capacities, including
27
those used for circuit breaker operation
and interlocking :
i) Those closed when breaker is closed : 6 (convertible type) 6(adjustable type)
ii) Those open when breaker is open : 6 (convertible type) 6(adjustable type)
iii) Those adjustable w.r.t. the position of 6NO + 6NC 6NO + 6NC
main contacts :
28 Partial discharge level at 1.2Un/√ 3 : < 5 Pico-coulombs < 5 Pico-coulombs
29 Radio interference level at 266 kV (rms) : As per IEC As per IEC
30 Corona extinction voltage : 156 kV(rms) 156 kV(rms)
Maximum impact loading on foundation 8000kg (approx) 4200 kg
31 during breaker opening and closing
operations under fault conditions. :
32 Seismic withstand value (horizontal and : 0.35g (H) 0.5g (H)
vertical) : 0.25g (V) 0.5g (V)
Tests to be conducted by the supplier at works As per IEC
33 (All details to be given)
a) Type tests : Yes(with extra cost)
b) Routine tests : Yes
34 Tests to be conducted at site : Bidder to furnish Yes
35 Overall dimensions (LxBxH), : Bidder to furnish 17745mm(L) x
6300mm(W) x
4159mm(H)
Weight of breaker complete with operating Bidder to furnish
36 mechanism, bushing, frame work,
a) with SF6 gas : Approx. 1584 kg/3-phase
b) without SF6 gas : Approx. 1500 kg/3-phase
Descriptive bulletins and drawings of the circuit Bidder to furnish At the detail design stage
37 breakers giving general details of construction.
Out of phase switching capability of the 12.5kA 12.5 kA
38 circuit breaker :
Comments regarding the suitability of the Re-strike Free Re-strike Free
circuit breaker for restrike free operation of
39 power transformer carrying full load current. :
Guaranteed time difference between the 3 / 5 ms (approx) Close : 5 ms
40 first pole and last pole operation timing. : Open: 3.3 ms
Details of the standard accessories Bidder to furnish At the detail design stage
41 to be supplied along with the breaker :
No. of the enclosed drg. showing the Bidder to furnish At the detail design stage
42 control scheme of circuit breaker :
Details of the provision to be made on GIS Bidder to furnish N/A
43 to reduce H.V. transients to acceptable :
values.
Guaranteed degraded values of B.I.L. : Bidder to furnish N/A
switching surges and 50 Hz rated values
44 during the life of equipment.
(Test data to support this guarantee
to be enclosed by the bidder).
B) Disconnectors/Grounding Switches
B-I
1 Manufacturer's name : As per vendor list Hyundai
2 Type & designation : Bidder to furnish 300DSM
3 Rated voltage
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
i) Rated : 220 kV 220 kV
ii)Max. permissible : 245 kV 245 kV
1.2/50 microsecond lightning impulse withstand
4 voltage
- Between line terminals and ground : 1050kV(peak) 1050 kV (peak)
- Between terminals with disconnecting switch 1200 kV 1200 kV
in open position :
5 Dry one minute power freq withstand voltage
- Between line terminals and ground : 460kV (peak) 460 kV(peak)
- Between terminals with disconnecting switch 530kV 530 kV
in open position :
Dry one minute power frequency withstand kV (rms)
6 voltage
i) Between line terminals and ground : 460 kV 460 kV
ii) Between terminals with disconnecting 530 kV 530 kV
switch in open position :
7 Rated frequency : 50 Hz 50 Hz
8 Rated normal current
Generator Transformer module : 2000 A 3150 A
Line module : 2000 A 3150 A
Bus coupler module : 2000 A 3150 A
9 Rated peak short circuit current : 100 kA 125 kA
Fault making capacity (For quick 40 kA 50 kA
10 acting grounding switch) :
11 Interruption of loop current : Bidder to furnish 1600A (100times)
12 Rated short time current kA (peak)
i) 1 second : 40 50 kA
ii) 3 second : 40 50 kA
13 Rated peak withstand current : 100 kA 125 kA
14 Rated inductive breaking current : *Bidder to furnish N/A
TRV caused by breaking/making *Bidder to furnish N/A
15 inductive current :
16 Rated capacitive breaking current : ≤ 1 Amp 0.5
TRV caused by breaking/making As per IEC 280kV
17 capacitive curr ent :
18 Rated insulation level
- 1 minute power frequency withstand voltage : 460kV (rms) 460kV (rms)
- 1.2/50 microsecond lightning 1050 kV (rms) 1050 kV (rms)
impulse withstand voltage :
- 250/2,500 microsecond switching Not applicable N/A
impulse withstand voltage :
Maximum temperature rise above ambient at rated
19 current
- Contacts, : 65 Deg. C 65
- Hottest part : 75 Deg. C 75
20 Motor operating mechanism
- current During Closing : ≤ 10Amps 1.8 A
- current During opening : ≤ 10 Amps 1.8 A
- Closing time : < 10 sec < 5 sec
- opening time : < 10 sec < 5 sec
- Operating voltage and Range : -15/+10% Un 220V 80-110%
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr.
Description of Technical Particulars Requirement Vendor’s Data
No.
21 Design data
- Type of contacts : Multi / Tulip fingers Tulip
- Contact area : Bidder to furnish 3632mm2
- Contact pressure : Bidder to furnish 0.87kgf/mm
- Surface treatment and thickness of 5-30 µm 20-50 µm
surface coating/silver electrolytic plating :
- Overtravel Distance after making of contacts : Bidder to furnish 4mm
- Distance Between the contacts in the 120-150 mm 101mm
fully open position :
- current density at the Minimum Cross 2 A/mm2 2 A/mm2
section of switch blade :
- Speed of Break : Bidder to furnish 0.2m/s
22 Partial discharge level at 1.2 Un /√ 3 : < 5 pico-coulombs < 5 pico-coulombs
23 Corona extinction voltage : Bidder to furnish 156kVrms
24 Radio interference level at 266 kV (rms) : *Bidder to furnish 1000 microvolt
Total operating time of disconnector along 10 sec <5s
25 with its operating mechanism :
Total operating time of disconnector after 10 sec <5s
26 the command is given :
27 Auxiliary switches
- No. of No and NC contacts : 6 NO + 6 NC 6 NO + 6 NC
- Rated voltage : 220 V DC 220 V DC
- Rated current 10A make and 0.7A 10 A
: beak
- Test voltage : Bidder to furnish 2kV(1min)
No. of operations the switch can 1000/2000 1000/2000
28 withstand without any need for
29 inspection
Type of mounting : Vertical / horizontal 3 phase gang operation
30 No. of poles per phase : 1 1
31 Safety factor taken into account while : As per IEC As per IEC
Type and material used for arcing contacts, Bidder to furnish Cu
32 if provided designing the disconnector. :
33 Weight of 3 pole isolating switch Bidder to furnish
- with earthing blades : 150 kg
- without earthing blades : N/A
Type of interlock between main isolator Electrical Electrical
34 and earthing switch :
Details of the type test reports enclosed and As per IEC As per IEC
the standards as per which these tests have
35 been carried out :
36 Rated maximum time duration of short circuit : 1 to 3 secs 3
37 Rated mechanical terminal load. : *Bidder to furnish At the detail design stage
Rated supply voltage of operating devices 220V DC 220 V dc
38 and auxiliary circuits. :
39 Rated pressure of SF6 gas : 7.5 bar(max) 5.5 Bar rel (max)
Minimum distance between poles with regard during detail engg Single phase in one
to insulation and forces caused by short- enclosure
40 circuit currents. :
Tests to be conducted by the manufacturer As per IEC
41 at works
i) Type tests : Yes (with extra cost)
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr.
Description of Technical Particulars Requirement Vendor’s Data
No.
ii) Routine tests : Yes
42 Tests to be conducted at site : Acc. To Bid Yes
B- II Safety Grounding Switches
1 Manufacturer's name : As per vendor list Hyundai
2 Type / designation : Bidder to furnish 300 EAP
3 Maximum permissible operating voltage : 245 kV 245 kV
4 Maximum make and carry current for one sec. : 100 kA (peak) 125 kA (peak)
5 Rated inductive breaking current : Bidder to furnish N/A
TRV caused by breakin g/making Bidder to furnish N/A
6 inductive current :
7 Rated capacitive breaking current : Bidder to furnish N/A
TRV caused by breakin g/making Bidder to furnish N/A
8 capacitive curr ent :
9 Details of motor operating mechanism : Electric Electric
10 provided
Closing current : < 10 A 5.2 A
11 Closing time : < 10 secs <5s
12 Opening current : < 10 A 5.2 A
13 Opening time : < 10 secs <5s
14 Operating voltage range & rated voltage : 220 V DC 220 V dc
15 Ground connection insulation : 5 kV 5 kV
16 Type of contacts : Multi finger / Tulip Tulip
17 Over travel distance : Bidder to furnish 48 mm
18 Distance of fully open contacts : Bidder to furnish 130 mm
19 Size of the removable link : Bidder to furnish 6t x 40mm
20 Speed of make : Bidder to furnish 0.2 mm/s
21 Partial discharge level at 1.2 Un /√ 3 : < 5 pico-coulomb < 5 pico-coulomb
22 Corona extinction voltage : 156 kV (rms) 156 kV (rms)
23 Radio interference level at 266 kV (rms) : As per Standard 1000 microvolt
Details of type test reports enclosed and the As per IEC As per IEC
24 standards as per which these tests have :
been carried out
No. of NO and NC contacts, its rated 6 NO + 6 NC/4 NO + 6 NO + 6 NC/4 NO +
25 voltage and current 10A make and 0.7A : 4 NC 4 NC
B- III break Speed Fault Making Grounding Switch
High
1 Manufacturer's name : As per vendor list Hyundai
2 Type/ designation : Bidder to furnish 300EYP
3 Maximum permissible operating voltage : 245 kV 245 kV
4 Maximum make and carry current for 1 sec. : 100 kA (peak) 125 kA(peak)
5 Rated inductive breaking current : 80 A 80 A
TRV caused by breakin g/making 2 kV 2 kV
6 inductive current :
7 Rated capacitive breaking current : 3A 3A
8 TRV caused by breakin g/making capacitive : 12 kV 12 kV
9 Motor operating mechanism : electric Motor spring
10 Making current : 100kA peak 100 kA peak
11 Induced current switching capability : Bidder to furnish Capacitive: 80A at 2kV
Inductive: 3A at 12kV
12 Closing current : 10A 4.7 A
13 Closing time : 10S <5s
14 Opening current : 10A 5.6 A
15 Opening time : 10S <5s
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr.
Description of Technical Particulars Requirement Vendor’s Data
No.
16 Operating voltage range, rated voltage : 220 V DC 220 V dc
17 Design data : During detail engg -
18 Ground connection insulation : 5 - 10 kV 10 kV
19 Type of contacts : Multi Finger / Tulip Tulip
20 Over travel distance : Bidder to furnish 6.2 mm
21 Distance of fully open contacts : 80-100 mm 100 mm
22 Size of the removable link : Bidder to furnish 6t x 40mm
23 Speed of make : Bidder to furnish 2.3 mm/s
24 Partial discharge level at 1.2 Un/√ 3 : 5 pico-coulomb 5 pico-coulomb
25 Corona extinction voltage : Bidder to furnish 156 kV (rms)
26 Radio interference level at 266 kV : *Bidder to furnish 1000 microvolt
Has equipment been type tested and to Yes / As applicable Yes
27 which standards ? :
No.of NO and NC contacts, its rated 6 NO + 6 NC/4 NO + 6 NO + 6 NC/4 NO +
28 voltage and current : 4 NC 4 NC
Total operating time of switch along with < 10 s <5s
29 its operating mechanism :
Total operating time of switch after < 10 s <5s
30 the command is given. :
C) CURRENT TRANSFORMERS
(Particulars for all groups of CT's to be
indicated either here or on separate sheet)
1 Name of manufacturer : As per vendor list Hyundai
2 Type : Bidder to furnish Bushing
3 Manufacturer's type / designation : Bidder to furnish 300SR-CT
4 Rated voltage : 245 kV 245 kV
5 Normal continuous rating : Bidder to furnish 1.2
6 Normal ratio of transformation : Bidder to furnish Refer to SLD
7 Rated primary current : Bidder to furnish
8 Rated secondary current : Bidder to furnish
Sr. No. Technical Particulars for CT Core

Numbers of cores. I / II / III / IV / V / VI

1 Rated output (VA) : As per the
2 Class of Accuracy : specification
3 Accuracy Limit factor requirement
:
4 Current error at rated primary current (%) :
Phase displacement at rated primary current
5
(minutes) :
Composite error at rated primary accuracy
6
limit current :
7 Knee point voltage (volts) :
8 Secondary Limiting Voltage : Bidder to furnish
9 Secondary Winding Resistance (ohm) : Bidder to furnish
10 Magnetizing Current (mA) at Knee point : Bidder to furnish
11 voltage
Instrument Security Factor : Bidder to furnish
One second over current factor & 40kA 50 kA
12 corresponding value of current. :
13 Rated dynamic current (peak value) in amps. : 100kA 125 kA
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr.
Description of Technical Particulars Requirement Vendor’s Data
No.
Rated continuous thermal current As per standard As per IEC
14 temperature rise over ambient. :
One minute power frequency dry withstand 460 kV(rms) 460 kV
15
test voltage :
One minute power frequency wet withstand during detail engg 460 kV
16
test voltage :
1.2/50 microsecond lightning impulse 1050kV (peak) 1050 kV
17
withstand test voltage :
One minute power frequency withstand 2kV (rms) 2 kV
18 test voltage on secondaries :
19 Partial discharge level at 1.2 Un/√ 3 : < 5 Pico-coulomb < 5 Pico-coulomb
20 Radio Interference voltage at 266 kV (rms) : Bidder to furnish 1000 microvolt
21 Corona extinction voltage : Bidder to furnish 156 kV (rms)
22 Total weight : Bidder to furnish Approx. 600kg/3-phase
23 Magnetization curves of CT cores : Bidder to furnish Refer to specification.
24 Mounting details : Bidder to furnish Bushing type
Overall dimensions (drawings with literature Bidder to furnish Approx. 630mm(L)x
25 630mm(W)x
to be enclosed) :
650mm(H)
Tests proposed to be conducted by As per standard
26
the manufacturer at works :
i) Type tests Yes(with extra cost)
ii) Routine tests Yes
27 Tests proposed to be conducted at site. : Acc. To bid Yes
D) VOLTAGE TRANSFORMERS
1 Name of manufacturer : As per vendor list Nissin
2 Type designation : Bidder to furnish Inductive
Wdg - I / II / III
3 Rated primary voltage (kV) : 220/√3 kV 220/√3 kV
Rated secondary voltage (V) 110/√3 V - 110/√3 V 110/√3 V - 110/√3 V
4 - 110/√3 V - 110/√3 V
:
5 Rated output per phase (VA) : As per the Refer to SLD
Rated burden (VA) specification Refer to SLD
6 requirement
:
7 Rated frequency (Hz) : 50 50
8 Standard values of rated voltage factor : Bidder to furnish 1.2(cont.)/1.5(30s)
9 Limits of temperature rise : Bidder to furnish As per IEC
10 One-minute power frequency withstand voltage : 460 kV(rms) 460 kV(rms)
1.2/50 microsecond lightning impulse 1050kV(peak) 1050kV(peak)
11
withstand voltage :
12 Total weight and dimensions : During detail engg Approx. 800kg/3phase
Limits of voltage error and phase
13
displacement in % :
Error angle : 0.2/3P
Voltage error : As per IEC Refer to SLD
Accuracy class at rated burden : Refer to SLD
Voltage factor and rated time : Refer to no.8
Details of the tests to be conducted by As per IEC
14 the manufacturer at works
i) Type tests : Yes
ii) Routine tests : Yes
15 Tests to be conducted at site. : As per IEC Yes
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
Detailed drawing with literature to be As per IEC Submitted after award
16
enclosed with bid :
E) SF6 GAS Breaker Bus Bar
1 Name of manufacturer : As per vendor list Ashai or Solvey
2 Electrical properties(please give details) : Bidder to furnish As per IEC
3 Compatibility with material used in switchgear : Yes As per IEC
Impurities in percentage(please mention Bidder to furnish As per IEC
4
details of impurities) :
Size of the cylinder in which gas is proposed Bidder to furnish 600 kg/bottle
5
to be supplied :
6 Condensation temperature : Bidder to furnish As per IEC
7 Physical properties(please give details) : As per IEC As per IEC
Certification that gas meets the requirement As per IEC As per IEC60376
8 of all the properties :
Tests to be conducted by the manufacturer As per IEC No
9
at works :
Tests proposed to be conducted at Bidder to furnish No
10 site to detect and limit the moisture
content in gas compartments :
11 Other details : : Bidder to furnish
- Normal pressure : Bar CB: 7 / Others:5
- Maximum pressure : Bar CB: 7.5 / Others:5.5
- Normal Operating density : Kg/m3 CB: 52.51 / Others: 38.3
- Maximum gas density : bar CB: 8 / Others: 6
- Minimum pressure To maintain CB: 6.5 / Others:4.5
dielectric insulation for 245kV :
- Maximum leakage rate per year at 0.5 % per year 0.5 % per year
Normal pressure in percentage :
- Maximum Permissible moisture content Bidder to furnish -5℃ dew point
by weight :
- Permissible variation in ambient temperature : Bidder to furnish ±5mm
- Details of gas filters : Bidder to furnish Absorbent
- Effective life of filters : Bidder to furnish 30 years
- Test pressure for gas system : Bidder to furnish CB: 6.5 / Others:4.5
- Constituents of gas in percent of ' weight' As per IEC As per IEC60376
and volume of SF6, air, CH4, H2 :
12 Alarm levels : Bidder to furnish
- First Alarm level for circuit breakers : 6.5 bar
- Second Alarm level for circuit breakers : 6.2 bar
- First Alarm level for all other components : 4.7 bar
- Second Alarm level for all other components : 4.5 bar
Gas Monitoring Devices Details of the Bidder to furnish Please refer to
sketches enclosed showing the type and gas scheme drawing
13 location of gas density, gas pressure, gas
moisture content and other fault monitoring
:
devices to be supplied.
14) Pressure Relief Devices : Bidder to furnish
- Rupturing pressure : CB: 15 bar / other: 10 bar
-Time to rupture : Approx. 60ms
-Details of the sketches enclosed showing Please refer to
the location and quantity of pressure relief gas scheme drawing
devices used :
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
F) SURGE ARRESTORS
1 Manufacturer : As per vendor list Toshiba

2 Type designation : Bidder to furnish RVLUF-198KY

3 Class of arrestor : Bidder to furnish 3

4 Rated Voltage of Arrestor : 179 kV 198kV
5 Rated Frequency : 50 Hz 50Hz
6 Maximum continuous operating : 156 kV 160kV
7 voltage(MCOV)
Nominal discharge current : 10 kA 10kA
Maximum discharge current (8/20 20 kA
8 20 kA
microsecond wave) :
9 Long duration discharge class : 3 3
10 Maximum 0.5 microsecond discharge voltage : Bidder to furnish 500kV at 10kA
(Front time 1us)
Residual voltage at 10kA (8/20 Bidder to furnish
11 463kV
microsecond current wave) :
Residual voltage at 20kA, 8/20 Bidder to furnish
12 495kV
microsecond current wave :
13 Maximum switching surge sparkover voltage : Bidder to furnish N/A
14 Partial discharge level at 1.1 Un/ 3 : < 5 pico-coulomb < 5 pico-coulomb
15 Corona extinction voltage : Bidder to furnish N/A
16 Radio interference level at 266 kV (rms) : Bidder to furnish N/A
17 High current short duration test value : Bidder to furnish 100kA (4/10us)
Short circuit capability & class of pressure Bidder to furnish
18 50kA – 0.1s
relief device :
19 Line discharge class : 3 3
20 Protective level provided by surge arrestor : Bidder to furnish N/A
21 Energy level : 8 kJ/kV 8kJ/kV at 2shot
Details of the type test reports enclosed and As per IEC
22 the standards as per these tests have been IEC60099-4
carried out :
23 Details of Surge counter & milliammeter : Bidder to furnish Refer to drawing No. M-
Detailed drawing with literature to be Bidder to furnish 6747780
Refer to Data
24
enclosed with bid : Memorandum
G) SUPPORT & BARRIER INSULATORS Support & Barrier
(Details for each type of insulator used to N/A
be indicated separatel y)
1 Manufacturer : As per vendor list Hyundai
2 Type of insulators used : Bidder to furnish
One-minute power frequency dry withstand 460 kV 460 kV
3
test voltage :
4 Dry flashover value : > 460 kV(rms) > 460 kV(rms)
5 Wet flashover value : *Bidder to furnish N/A
1.2/50 microsecond lightning impulse 1050kV(peak) 1050 kV
6
withstand test voltage :
7 Creepage distance : Bidder to furnish Approx. 150mm
8 Puncture value of insulator in SF6 gas : 1050kV 1050kV
9 Weight of insulators in the SF6 GIS enclosure. : Bidder to furnish 30 kg
Detailed drawing with literature to be Bidder to furnish Please refer to attached
10 drawing for insulation
enclosed with bid :
spacer
H) GAS PROCESSING UNIT
1 Name of the manufacturer : Bidder to furnish DILO
2 Capacity : Bidder to furnish Refer to catalogue
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
3 Dimensions of unit : Bidder to furnish Refer to catalogue
4 Weight of the unit : Bidder to furnish Refer to catalogue
5 Purity of gas obtainable : As per IEC 60480 Refer to catalogue
Description of plant & its various components Bidder to furnish Refer to catalogue
6
to be attached :
PARTIAL DISCHARGE MONITORING
I)
SYSTEM
1 Name of the manufacturer : Bidder to furnish Hyundai
2 No of couplers : Bidder to furnish 45
3 Capacity : Bidder to furnish Above -20dBm@5pC
4 Type of sensors : Bidder to furnish UHF sensor
5 Details of Spectrum Analyser : Bidder to furnish 6 CH, 500~1500MHZ
J) GROUNDING CONNECTION
1 Type of conductor : Bidder to furnish Copper
Arrangement for connecting conductor Bidder to furnish Refer to attached
2 Earthing drawing
to ground :
Type of painting, if any required to be Bidder to furnish N/A
3 carried out at end points of ground riser :
K) DESIGN CLEARANCE Bidder to furnish
Minimum insulating clearances at nominal rated Bidder to furnish
SF6 gas pressure and rated voltage/BIL voltage
for the following :
a) Main bus to ground : 102
b) Circuit breaker
-Contact To ground : 158
- Across the contacts : 191
c) Isolator switches
- Contact to ground : 65
- Across the contacts : 104
d) Safety grounding switches
- Contact To ground : 100
- Across the contacts : 100
L) STEEL SUPPORT STRUCTURES Bidder to furnish
a)Structural steel
- Minimum guaranteed yield point : Kg/cm sq. 2.5
- Ultimate tensile strength : Kg/cm sq. 4.1
b)Bolts and nuts Bidder to furnish
- Minimum tensile strength of bolts : Kg/cm sq 5.2
- Proof load on nuts : Kg 4.0
c)Type of galvanization : Bidder to furnish Hot dip galvanized
d)Manufacturer : Bidder to furnish Hyundai
M) WEIGHTS & DIMENSIONS Bidder to furnish
1 Shipping weight of heaviest package :
Dimensions of largest package (6.4 x 2.8 x 4.5) ( L x B x 4.8 x 2.4 x 2.4
H) meter in including
2
trailer height
:
Shipping weight of all special lifting Bidder to furnish Please refer to attached
3 devices wrenches and tools etc. Installation equipment list
:
4 Shipping weight of SF6 gas treatment unit : Bidder to furnish Please refer to catalogue
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
5 Weight of each type of switchgear bay module Bidder to furnish
- Transmission line feeder : Approx. 10,000 kg
- Generator transformer incoming feeder : Approx. 8,000 kg
- bus coupler bay module : Approx. 5,000 kg
Untanking height, (i.e. height under Bidder to furnish Please refer to section
6
hook required) : drawing
Shipping weight of SF6 gas cylinders Bidder to furnish Approx. 900 kg
7 required for first filling and testing :
Approximate shipping dimensions of all Bidder to furnish 1.4m(L)x1.4m(W)x
8
gas cylinders : 2.6m(H)/4 bottle
Clearance required between max hook reach Bidder to furnish Refer to section drawing
9 & highest point of equipment :
Details of lifting & handling tackles supplied Bidder to furnish At the detail design stage
10 for loading, unloading consignments :
Total tonnage to be shipped. : Bidder to furnish Approx. 137,000kg
11
N) TOLERANCES Bidder to furnish
Tolerance (vertical & horizontal) and at Within ±2mm
1 interface of SF6 to Transformer oil bushing :
Tolerance (vertical & horizontal) and at N/A
2 interface of SF6 to GIS bus Reactor bushing :
O) OTHER INFORMATIVE DETAILS
Offered system is of proven design & Yes Yes
1
type tested :
2 Type test report submitted : Bidder to furnish Yes
3 GIS testing clearance diagram : Bidder to furnish N/A
Bay control ler Model, technical details & Bidder to furnish HHI will provide mounting
4 Space only
catalogue :
5 Bay control ler communication protocol : IEC 101/103 As per IEC
Recommendation for Optimization of the GIS Bidder to furnish Yes
6 layout :
7 Confirmation on Insulation Co-ordination study : Bidder to furnish Yes
8 Per set price of offered LA (optional) : Bidder to furnish Refer to price breakdown

9 Per meter price of GIB (optional) : Bidder to furnish Refer to price breakdown
10 Civil work guide : Bidder to furnish Refer to installation
manual
Rental charges for testing & Bidder to furnish Refer to price breakdown
11 commissioning tools & tackles for the :
GIS
12 Recommended capacity of the GIS hall crane : 5T/10T 3 ton
13 Gas compartment diagram for the offered GIS : Bidder to furnish Refer to gas scheme
drawing
14 Complete layout of the offered GIS w.r.t. Bidder to furnish F10054-02
Project Power House Layout :
15 Reference List of supply : Bidder to furnish Yes
Dynamic Load for the complete GIS Bidder to furnish Horizontal: 1400kgf/1-phase
16 for determination of the floor Vertical: 900kgf/1-phase
:
thickness
Tentative Time schedule for supply, Bidder to furnish Yes
17 erection, commissioning & testing of the :
offered GIS
18 On Line PD monitoring system (optional) : Bidder to furnish Yes
19 Off Line PD monitoring system (optional) : Bidder to furnish Yes
20 Offer for the Mandatory spares : Bidder to furnish Yes
21 No Deviation against the specification : Bidder to furnish Yes
 DATA SHEET - 245KV GIS
3 X 37 MW SAWRA KUDDU
DOC. NO. SK-GS-03-1169, R0
HYDRO ELECTRIC PROJECT

Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
22 GIS Surge Impedance : Bidder to furnish 59.9 ohm
23 GIS Surge/propagation Velocity : Bidder to furnish 2.723 x 108 m/s
24 Disconnector (Open) Capacitance : Bidder to furnish 30pF(either end to ground)
30pF(between contacts)
25 Disconnector (Close) Capacitance : Bidder to furnish 44.3pF/m
26 Disconnector Surge Impedance : Bidder to furnish 82.9 ohm
27 Disconnector Propagation Velocity : Bidder to furnish 2.724 x 108 m/s
28 Voltage Transformer Capacitance : Bidder to furnish 100pF
29 Circuit Breakers (Open) Capacitance : Bidder to furnish 90pF(either end to ground)
50pF(between contacts)
30 Circuit Breakers (Close) Capacitance : Bidder to furnish 56.9pF/m
31 Circuit Breakers Surge Impedance : Bidder to furnish 65.6 ohm
32 Circuit Breakers Propagation Velocity : Bidder to furnish 2.724 x 108 m/s
33 Surge Arrestor Surge Impedance : Bidder to furnish 10 Ohm to 1 k Ohm
34 Surge Arrestor Propagation Velocity : Bidder to furnish 200 m / µs
Surge Arrestor Discharge Voltages - Bidder to furnish 1kA : 393kV
35 2kA :403kV
Switching surges at- :
1kA/2kA/3kA/5kA/10kA/20kA & 40kA 3kA :N/A
5kA: :N/A
10kA: :N/A
20kA: :N/A
40kA: :N/A

36 Surge Arrestor TOV 1 Sec : Bidder to furnish 227

37 Surge Arrestor TOV 10 Sec : Bidder to furnish 217