VCB (ZW8-12 Series)

Detailed Product Description

VCB (ZW8-12 Series)

General
Vacuum Circuit Breaker (ZW8-12 Series) are used for switching on/off load current , overload current and short circuit current in three phase power systems with AC 50 Hz and rated voltage 10-12kv . matching with recloser controllers , the breaker can identify current characteristics and realize repetitious autoeclosing or permanent fault isolation . with its own PT power .

Normal working environment
1 Ambient air temperature : -40 to 40; daily temperature difference : 25 ;
2 Altitude :≤2000m (if the place is at higher altitude , enhance rated insulation level , it should be custom-made for 2000m );
3 Wind pressure : ≤700Pa(Equivalent to wind speed 34m/s);

Main Technical Parameter

Item	Unit	Parameter
Rated voltage	KV	12
Rated current	A	630	400	200
Rated Frenquency	Hz	50
1 min power frequency withstand voltage	KA	42
lightning impuslse withstand voltage	KA	75
Rated short-circuit interrupting current	KA	12.5	16	20
Rated short-circuit closing current peak	KA	31.5	40	50
Rated short-time withstand current	KA	12.5	16	20
Rated withstand current peak	KA	31.5	40	50
Rated short-circuit breaking current breaking times	Times	30
Mechanical lifetime	Times	10000