Product Features

The GW4B-12 (W) outdoor high-voltage isolation switch is a new type of outdoor high-voltage isolation switch developed by our company. It is characterized by a novel structure, reliable performance, and meets the updated national standards for high-voltage isolation switches. It has the advantages of strong corrosion resistance and pollution resistance, and is suitable for places with poor working environments.  

The GW4B-12 (W) outdoor high-voltage isolation switch breaks the traditional structure of similar products in the design and manufacturing process. Its conductive contacts are made of a new type of special material, and the conductive contacts are self operated. The traditional high-voltage isolation switch's conductive contacts are compressed by a spring, which often reduces the clamping force of the contacts due to the heating of the spring during operation, forming a vicious cycle. The self operated contacts can effectively exhaust this situation and keep the contacts in good working condition. The rotating part of the conductive contact blade adopts a stainless steel shaft and oil-free lubricated bearing structure to ensure lightweight and flexibility, and there will be no jamming phenomenon. All black metal parts are treated with powder infiltration new technology and then coated with protective paint for double protection to ensure that the product is in good working condition for 20 years. Not corroded.

main purpose

GW4B-12 (W) type isolating switch is an outdoor high-voltage electrical appliance used for closing and breaking AC power circuits with a rated voltage of 12KV and a rated frequency of 50HZ, with voltage and no load.

Applicable environmental conditions

a. Altitude: not exceeding 2000m;
b. Surrounding air temperature: -30 ℃ to+40 ℃;
c. Wind speed not exceeding 35m/s;
d. No obvious pollution sites such as severe dust, pollution, flammable and explosive substances, chemical corrosion, etc;
e. No places with frequent and severe vibrations.

Main structure of the product

a. GW4B-12 (W) type isolating switch is a three-phase linkage type, equipped with CS11 type manual operating mechanism. Two post insulators are fixed on the bearing seats at both ends of the base, connected by joints and connecting rods. When rotating horizontally, one post insulator is rotated, while the other post insulator is pulled to rotate in the opposite direction, causing the contact blade to separate or close. The rotation angle of the post insulator is about 90 °. When the three are connected, the poles are linked by connecting rods. The creepage distance of the post insulator used in the isolation switch is ≥ 31mm/kv.
b. The operating mechanism consists of an operating handle, a base, an auxiliary switch, a cover, and a positioning locking device. The operating handle rotates 90 degrees. Equipped with F6 auxiliary switch, it is used to transmit the "open" and "close" signals of the main switch and the electrical interlocking information between the isolation switch and the circuit breaker.
c. The black metal components in the isolation switch and manual operating mechanism are both treated with hot-dip galvanizing or vacuum powder galvanizing technology to prevent corrosion.

Technical data

GW4B-12 (W) outdoor high-voltage isolation switch