1. Application

For three-phase AC 50Hz, rated voltage of 40.5kV distribution system, as the acceptance and

distribution of electric energy. Dual-bus structure can be derived products.
Equipment using angles and bending steel plates welded together. Configurable ZN12-40.5 and

ZN72-40.5 type, such as vacuum circuit breakers, circuit breakers for the fixed installation.

Protection class IP2X, has reliable mechanical interlock to prevent misuse function.

2. Environmental Conditions

1) Ambient temperature:-10°C-+40°C;

2) Altitude: high voltage ≤1000Meter, low voltage ≤2500Meter (technical department will design

specially if exceeds);

3) Relative humidity:≤85%

4) Seismic intensity:≤ magnitude 8;

5) Apply to the places have no fire,no explosion danger, no serious pollution,no chemical corrosion

and no violent vibration.