12 kV C-GIS high voltage GRM Ring Main Unit Switchgear
Product Description
12kv Gas Insulated Switchgear GRM series of ring main unit is SF6 gas- insulated metal common tank enclosed switchgear, consisting of load break switch unit, load break switch fuse combination electrical unit, vacuum circuit breaker unit, and the incoming line unit of bus. It adopts a range of advanced technologies and materials, with excellent electrical and mechanical properties, less affected by environment and climate, in small size, easy to install easy to operate, with no need of maintenance, and can be flexibly combined. Its clear and intuitive design ensures simple and direct operation, the feeder's connection capacity is large, suitable for a variety of wiring sys
Main Application
The SF6 gas insulated switchgear (GIS) is used for receiving and distributing electric energy in power system. It is widely used in processing industry, civil and power supply terminal,such as:
· Small secondary distribution station
· Switching station
· Urban residential area
· Airport
· Railway, tunnel
Product Features
· The switchgear is equipped with perfect "Five Prevention" interlock device, which can completely eliminate personnel injury and equipment operation failure caused by human error operation.
· The gas insulated switchgear uses SF6 gas as arc extinguishing and insulating medium
· The switchgear is fully sealed and insulated, and the protection level reaches IP67.
· The switchgear has reliable safe pressure relief channel, which can guarantee the safety of personnel even in extreme cases
· The whole switchgear is not affected by the external environment.
· Cabinet size is small, does not occupy space, and easy to install
· The switchgear can be equipped with electric, remote control and detection devices according to different needs of users
Technical Parameter
| 12kv Technical Parameter |
Unit |
C module |
F module |
V module |
CB module |
Load
break
switch |
Switch
fuse |
Vacuum
circuit
breaker |
Isolate/
earthing switch |
Vacuum
circuit
breaker |
Isolate/
earthing
switch |
|
|
| Rated Voltage |
KV |
12 |
12 |
12 |
12 |
12 |
12 |
| Rated Frequency |
HZ |
50 |
50 |
50 |
50 |
50 |
50 |
| Power Frequence Withstand Voltage |
KV |
42 |
42 |
42 |
42 |
42 |
42 |
| Impulse Withstand Voltage |
KV |
75/85 |
75/85 |
75/85 |
75/85 |
75/85 |
75/85 |
| Rated Current |
A |
630 |
1250 |
630 |
630 |
|
|
| Closed Loop |
A |
630 |
|
|
|
|
|
| Off Load Cable Charging |
A |
10 |
|
|
|
|
|
| Rated Active Load Drop-oput Current |
A |
630 |
630 |
|
|
|
|
| When Earth Fault drop out Current of Cable Charging |
A |
17.4 |
|
|
|
|
|
| Short Circuit Drop-out Current |
KA |
|
31.5 |
25 |
|
|
|
| Making Capacity |
KA |
50 |
note |
63 |
63 |
63 |
63 |
| Rated Short Time Withstand Current |
KA/3S |
20 |
|
20 |
20 |
25 |
25 |
| Transfer Current |
A |
|
1700 |
|
|
|
|
| Loop Resistance |
μΩ |
≤300 |
≤600 |
|
|
|
|
| Mechanical Life |
Times |
5000 |
5000 |
10000 |
3000 |
10000 |
3000 |
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