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GN22-12 indoor high voltage disconnect switch. The series of internal high-voltage isolating switches (hereinafter referred to as isolating switches) produced by our company are indoor equipment with a rated voltage of 12kV and a three-phase alternating current of 50Hz. Used to open and close circuits in the absence of load voltage.
Our GN22-12 indoor high voltage disconnect switchSuitable for rated voltage 10KV, three-phase AC 50HZ, high-voltage switchgear in the power system as a circuit breaker with voltage and no load. The switch structure design is novel, reasonable and unique. It adopts the locking method of two-step action, which makes the switch have excellent dynamic and thermal stability and low operating force. It adopts epoxy resin, insulator and brush-plated silver and other new materials and new processes, so that the switch has good conductivity, small size and light weight. Its outgoing terminals are easy to connect with vacuum circuit breakers and oil circuit breakers, which can reduce the volume of switch cabinets, reduce transition joints, and reduce costs.
G: Isolating switch
N:Indoor
22:Design Number
12:Rated voltage:12kV
▢: With grounding switch
(W): Anti-fouling type
▢: Rated current:1600A、2000A、2500A、3150A
◆Installation method: side-mounted, middle-mounted
◆Ambient air temperature: upper limit +40C, lower limit -30C; ;
◆Altitude: ≤2000m (if the altitude needs to be increased, the rated insulation level should be increased accordingly);
◆Wind pressure: no more than 700Pa (equivalent to wind speed of 34m/s);
◆Amplitude: earthquake intensity 8 degrees;
◆Contamination level: Class I;
◆Maximum daily temperature difference: no more than 25C.
Parameter |
Unit |
Value |
||
Rated voltage |
kV |
12 |
||
Rated frequency |
Hz |
50 |
||
Rated current |
A |
1600-2000 |
2500-3150 |
|
Rated short-time withstand current |
kA |
40 |
50 |
|
Rated peak withstand current |
kA |
100 |
125 |
|
Rated short circuit duration |
s |
4 |
||
Rated insulation level |
1min power frequency withstand voltage |
kV |
Between poles, pole to ground 42, fracture 49 |
|
Lightning impulse withstand voltage (peak) |
kV |
Between poles, pole to ground 42, fracture 49 |
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