345 kV 2000 A 63 kA G.I.L

345 kV 2000 A 63 kA G.I.L

345 kV GIL Layout

345 kV GIL Structure diagram

 

Main technical data:

 

Gas-insulated transmission lines(GIL) is applied in the tunnel buried and elevated lines. Actually erection of technology is used commonly pipeline. It can be completed in the shortest time of construction.The sealed structure can prevent circuit to external environment factors. GIL is high transmission capacity and lowcapacitance character. It can be directly connected to an overhead power line system. The transmission loss is
much smaller than conventional cables or overhead lines.The company equipment voltage level is 69-345 kV.

 

345V 2000A 63kA GIL Layout:

 
1
Rated Voltage
kVrms
345
2
Rated maximum Voltage
kVrms
362
3
Rated frequency
Hz
60
4
Rated Current
Arms
2000/4000/6000
5
Rated short-circuit breaking current
kArms
50
6
Rated short time withstand current(3s)
kArms
63
7
Rated power-frequency withstand Voltage
kVrms
555
8
Rated Lightning impulse withstand Voltage
kVpeak
1300
9
Rated Switching impulse withstand Voltage
kVpeak
N/A
10
Rated Switching impulse withstand Voltage
cycle
N/A
11
Rated delay trip time
second
N/A
12
Standard duty cycle for breaker
-
N/A
13
Operation duty cycle for breaker
-
N/A
14
Rated pressure(20℃)
kgf/cm．G
5
15
SF6leakage rate
% / year
0.5
16
Control Voltage
DC(V)
N/A
17
Operation mechanism for breaker
-
N/A

List Contract number Amount Date Location
1 K6019400040 3 96/08 Wufeng substation
2 008-950150077 3 96/12 Zongke substation
3 008-960160045A 2 97/04 Longtan substation
4 K6349500002 5 98/05 Houli substation
5 008-960160045B 3 98/07 Zhugong substation
6 1009-115 2 98/08 Mili substation
7 008-950140218A 2 Constructing Gaogang C substation
8 008-950140218B 2 Constructing Wujia substation

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