Indoor Gas Insulated Metal-clad Medium voltage AC Switchgear fixed type
Overview
XGN75B-12 Indoor AC HV Gas Insulated Metal-clad Switchgear (hereafter referred to as “GIS”) is a new generation switchgear, main switch does not only use in permanent magnetic mechanism vacuum breaker but also use in a spring mechanism vacuum circuit breaker, the whole switchgear consists of air insulation part and SF6 bay, it is either compact or extensible, and suitable for distribution automation.
Features
GIS has the advantages of compact structure, flexible operation, and reliable interlocking, etc. Satisfactory technical schemes can be provided to meet the requirements on different application sites (especially those places with poor environment) from users. Application of sensor technique and the latest protective relay plus advanced technical performance and flexible assemble scheme make an firm foundation for satisfaction of different requirements from user.
Application
GIS is suitable for small secondary substation in electric system, switching station, box-type substation, residence community, industry and mining enterprises and superstore, especially suitable for places strict with power use such as airport, subway, railway, etc.
| Name |
|
Unit |
Parameters |
| Rated Voltage |
|
kV |
12 |
| Rated Current |
Main Busbar |
A |
630 1250 2000 2500 |
| Branch Busbar |
5～1250 |
| Rated Frequency |
|
Hz |
50 |
| Rated Power Frequency Withstand Voltage(1min) |
Between phases, phase to earth |
kV |
42 |
| Across the open gap |
49 |
| Rated Lightning Impulse Withstand Voltage |
Between phases, phase to earth |
75 |
| Across the open gap |
85 |
| Rated Short-circuit Breaking Current |
|
kA |
20 31.5 40 |
| Rated Short-time Withstand Current (4s) |
|
kA |
20/4 31.5/4 40/4 |
| Rated Peak Withstand Current |
|
kA |
50 80 100 |
| Rated Short-circuit Making Current |
|
kA |
50 80 100 |
| Protection Class |
|
|
Gas Filled Enclosure IP67, LV Enclosure IP4 |
| Enclosure Dimension(Width*Depth*Height) |
|
mm |
500x1000x1850 |
| Mechanical Life |
Permanent Magnet Circuit Breaker |
Times
|
20000 |
| Disconnector |
5000 |
| SF6 Gas Rated Inflation Pressure (Gage pressure for 20℃) |
Mpa |
0.04 |
| SF6 Gas Minimum Inflation Pressure (Gage pressure for 20℃) |
Mpa |
0.03 |
| SF6 Annual Gas Leakage Rate |
|
％ |
≤1 |
|
Product Tags:
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Indoor Fixed Type Medium Voltage Gas Insulated Switchgear With Metal Clad Images
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