First, an overview

ZN28-12 series vacuum circuit breaker for rated voltage of 12kV, three-phase AC 50Hz indoor high voltage switch equipment. The products conform to the standards of GBl984-89, the overall structure of the product divided into main switch and operating mechanism of various installation and a switch body and actuating mechanism are installed separately in two forms. A type structure is the basic ZN28-12; split structure for ZN28A-12, applicable to a variety of fixed type switch cabinet, such as CClA (z), XGN2A-10 (z).

It can be equipped with CDl7, CDl0 type DC electromagnetic actuator and CTl7, CTl9 spring type operating mechanism.

Two, the use of environmental conditions

1, ambient air temperature: upper limit of +40 degree, lower limit of -30;

2, altitude: not more than 2000m;

3, the wind pressure is not more than 700pa (the corresponding dry wind speed 34m/s);

4, the earthquake intensity is not more than warm;

5, the maximum daily temperature difference: no more than 25 degrees;

6, relative humidity: daily average of not more than 95%, the average of not more than 90%;

7, non flammable, easy to explode danger, chemical corrosion and violent vibration place.

Five, ordering instructions

1, circuit breaker name, type and order quantity;

2, circuit breaker rated current and rated short circuit breaking current;

3, voltage parameters of the energy storage motor;

4, spare parts, spare parts name and quantity;

5, if the user has other special requirements, when ordering negotiation.