VS1-12 / 630-25 (ZN63A-12 / 630-25), VS1-12 / 1000-25 (ZN63A-12 / 1000-25), VS1-12 / 1250-25 (ZN63A-12 / 1250-25)

VS1-12 / 1250-31.5 (ZN63A-12 / 1250-31.5), VS1-12 / 1600-31.5 (ZN63A-12 / 1600-31.5)
VS1-12 (ZN63A-12) type indoor high voltage vacuum circuit breaker, fixed voltage three-phase AC 50Hz power system for the indoor 12kV switchgear, as network equipment, industrial and mining enterprises to protect and control unit power equipment suitable for the rated operating current frequent operation, or to short-circuit current breaking several places.

The circuit breaker operating mechanism and the circuit breaker body-in-one design, either as a fixed installation unit can also be equipped with a special advance mechanism, composition Handcart unit role.

Rings environment

A ambient air temperature: up to + 40 ℃, lower limit of -15 ℃;

b Altitude: ≤100m (For higher altitudes, the rated insulation level corresponding increase);

c Amplitude: Earthquake column is no more than 8 degrees;

d daily average relative humidity less than 95%, on average less than 90%

e no fire, explosion, heavy pollution, chemical corrosion and severe vibration.

The main technical parameters

Rated voltage

KV

12

Rated frequency

Hz

50

Rated lightning impulse

Withstand voltage (peak)

KV

75

Rated 1min power frequency

Withstand voltage (rms)

KV

42

Rated operating sequence

O-0.3S-CO-180S-CO

Rated current

A

630

1250

Rated short circuit breaking current

KA

20

25

25

31.5

Rated short-circuit current (peak)

KA

50

63

63

80

Rated short duration

S

4

Rated short-circuit breaking current breaking times

Secondary

30

Mechanical life

Secondary

20000