ZN85A-40.5 high voltage AC vacuum circuit breaker

ZN85A-40.5 high voltage AC vacuum circuit breaker


Product overview

ZN85A-40.5 indoor high voltage vacuum circuit breaker is an indoor device in 35kV, three-phase AC 50 Hz power system. It is suitable for industrial and mining enterprises, power plants, substations and other places. It is used for the control and protection of high voltage motors, transformers, capacitors and other devices.



Product features

1. The operating mechanism is integrated with the circuit breaker;

2. It can be operated frequently and the product hardly needs maintenance;

3. For long mechanical life and electrical life, domestic 777 factory and Westinghouse vacuum interrupter can be selected;

4. This product conforms to Q / fzty.007-2001 ZN85A-40.5 indoor high voltage vacuum circuit breaker and gb1984-1989 AC high voltage circuit breaker.


Conditions of use

The ambient air humidity does not exceed 40 oC, and the average value measured within 24 hours does not exceed 35 oC. The minimum ambient air humidity is - 15 oC.

Relative humidity: upper limit + 40 oC, lower limit - 5 oC, daily temperature difference 15 oC;

1. The average value of relative humidity measured within 24 hours is not more than 95%;

2. The average value of steam pressure measured within 24 hours is not more than 90%; the average value of steam pressure measured within 24 hours is not more than 90%;

3. The average value of monthly relative humidity is not more than 90%;

4. The average monthly water vapor pressure is less than 1.8kpa.

The altitude is not more than 1000m.

Earthquake intensity: no more than 8 degrees.

The surrounding air is not obviously polluted by dust, smoke, corrosive or combustible gas, steam or salt spray.

Ordering instructions

a. Primary scheme diagram and component technical data;

b. Secondary wiring schematic diagram and component specification, model and technical data;

c. Switch cabinet arrangement and plan, small bus layout;

d. When ordering, please indicate the specifications of main bus bar and branch bus bar, otherwise supply according to the manufacturer's regulations;

e. When bus bridge is needed, span size, height and plane layout size shall be provided;