Detailed Product Description

ZN28-12 series vacuum breaker is a kind of indoor high-voltage electric equipment with rated pressure12Kv,triphase AC 50Hz. This breaker agrees with GB1984-1989 standard. Its general structure has two types, one is installation combining switch body and operation agency together, and the other is installation with switch body and operation agency separated. one-piece construction is ZN28-12 basic type, separated construction is ZN28A-12 type that applies to all kinds of fixed type switchgear ,such as  GG-1A(Z),XGN2A10(Z) and so on.

This breaker can be used with CD17CD10A AC electromagnetic operation agency and CT19 spring power storage type of operation agency.

Using conditions,

a.      ambient air temperature , upper limit +40 , lower limit -15

b.      elevation≤1000If there is any need to increase the elevation, the rated insulation level should be increased properly

c.      amplitude, earthquake intensity less than 8

d.      daily average value of relative humidity should be less than 95%, monthly average level should be less than 90%

e.      no fire ,no danger of explosion ,no rusty gas, and no violent exercise