1. ZN85 type indoor 3 phase 40.5KV 33kv vacuum circuit breaker VCB

1.1.Application: for the control and protection of substation and equipments; making and breaking short-circuit current under various operating status of electric network. It matches with matched Indoor Type Vacuum Circuit Breaker ZN12-40.5, ZN23-40.5 .

1.2.Standards: IEC 62271-100

1.3.Parameters: Rated voltage: 40.5kV.
Rated current: 2000A .
Rated frequence:AC50HZ.

2. Environmental conditions:

1. Altitude: the altitude does not exceed 2000m;

2. Ambient temperature: no higher than +40℃, not lower than -25℃;

3. Relative humidity: the daily average does not exceed 95%, and the monthly average does not exceed 90%;

4. Earthquake intensity: no more than 8 degrees;

3. Structural features:

Zn85-40.5 / t2000-31.5 indoor high voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker), suitable for three-phase ac 50Hz, rated voltage 40.5kv power system, for industrial and mining enterprises, power plants and substations as load current, overload current, fault current.

The circuit breaker and operating mechanism adopt upper and lower arrangement structure, which effectively reduces the depth of the circuit breaker.

The three-phase arc extinguishing chamber and the connected charged body are isolated by three independent epoxy resin insulation cylinders to form a composite insulation structure.The main circuit vacuum arc extinguishing chamber and the static and static conductive connection are installed on the insulation tube, so that the phase spacing is only 300mm.The main circuit electric connection all USES the fixed connection, has the very high reliability.The insulation tube is installed above the circuit breaker frame.

The spring operating mechanism specially designed for this new type of circuit breaker is installed in the framework of the circuit breaker. Its structural characteristics are more suitable for the upper and lower layout of the circuit breaker and become an integral part of the overall structure of the circuit breaker.The mechanism design is simple, the output curve and its performance are more suitable for the characteristics and requirements of 40.5kv vacuum circuit breaker.

The overall layout is reasonable, beautiful and concise.Small size, flexible operation, reliable electrical performance, long service life, convenient maintenance, maintenance mechanism features.

The circuit breaker is suitable for frequent operation and a variety of occasions and operating conditions are harsh places.

4. main technical parameters

5. Photo and drawing