Product overview
GW4-12, 24, 35, 40.5, 72.5, 126 series outdoor AC high-voltage isolating switches (hereinafter referred to as isolating switches). Suitable for power systems with a frequency of 50Hz and a rated voltage of 11/24/35/40.5/72.5/126kv It is used as a switching circuit when the voltage is no-load. The anti-pollution isolating switch can meet the requirements of users in heavily polluted areas and can effectively solve the problem.
Solve the pollution flashover problem that occurs during the operation of the isolating switch.
The isolating switch and the attached grounding switch are each equipped with independent operating mechanisms. In order to ensure the correct operating sequence between the isolating switch and the grounding switch, this product is equipped with a mechanism interlocking device. The 35-110kV grounding switch is divided into Type I and type II, 15 and 220kV are type II. The dynamic thermal stability of type II grounding switch is the same as that of the isolating switch.
This product is available in the following different specifications:
1. According to whether there is a grounding switch, it is divided into: ungrounded, single grounded, double grounded
2. According to the area of use, it is divided into: ordinary type and anti-fouling type.
Features of this series of isolating switches:
1. The electrical connection terminal is transitioned through a soft connection, and the conductive contact is reliable;
2. The ground knife adopts an external closing arrangement to ensure a reliable insulation distance between the ground knife and the other live end during the closing process;
3. The GW4-220 model is equipped with a folding floor knife, which reduces the space occupied by the floor knife.
Use environmental conditions
1. Altitude: 1000~3000m area;
2. The ambient temperature should not be higher than +40°C, and the lowest temperature should not be lower than -35°C (not lower than -40°C in alpine areas)
3. Wind speed does not exceed 34m/s;
4. The earthquake intensity does not exceed 8 degrees;
5. The ice coating thickness does not exceed 10mm;
6. Pollution-resistant products are suitable for areas with heavy pollution;
7. Not suitable for places with flammable substances, explosion hazards, chemical corrosion and severe vibration.
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Solve the pollution flashover problem that occurs during the operation of the isolating switch.
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