GN30-12D Series Indoor Rotary High Voltage Isolating Switch

GN30-12D Series Indoor Rotary High Voltage Isolating Switch
GN30-12D Series Indoor Rotary High Voltage Isolating Switch

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GN30-12 indoor rotary high-voltage isolating switch is a new type of isolating switch of rotary contact blade type. The main structure is to fix two groups of insulators and contacts on the upper and lower planes of the three-phase common chassis. Rotate the contact knife to realize the opening and closing of the switch.


GN30-12D indoor rotary high-voltage isolation switch is the addition of a knife on the basis of GN30-12 indoor rotary high-voltage isolation switch, which can meet the needs of different power systems. This product is compact in design, small in space, strong in insulation, and easy to install and adjust. Its performance meets the requirements of GB1985-89 "AC High Voltage Isolating Switches and Earthing Switches". It is used for opening and closing circuits under the condition of voltage and no load. It can be used together with high voltage switchgear or alone.



Model Meaning




Normal Use Environment


1. The altitude does not exceed 1000m;

2. Ambient air temperature: upper limit +40°C; lower limit -10°C;

3. Relative humidity: the daily average is not more than 95%; the monthly average is not more than 90% dry;

4. The seismic intensity does not exceed 8 degrees;

5. Places without severe dust, chemical corrosive and explosive substances; 6. Places without frequent violent vibrations.



Technical Parameters


Model GN30-12/400-12.5 GN30-12/630-12.5 GN38-12/1200-31.5 GN38-12/1250-31.5
GN30-12D/12.5 GN30-12D/630-20 GN38-12/D1200-31.5 GN30-12D/1250-31.5
Rated voltage (KV) 12
Rated current (A) 400 630 1000 1250
Thermal stability current (KA) 12.5 20 31.5
Thermal stabilization time (S)   4
Dynamic stability current (KA) 31.5 50 80
Rated insulation level Lightning impulse voltage (KV) Phase-to-phase, relative to ground 75, fracture 85  
1min power frequency voltage (KV) Phase, relative to 42, fracture 48  



Installation Dimensions


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