suitable for 40.KV system of rural and urban networks,to make and break load current ,overload current and short-circuit current

General:

ZW7-40.5 type outdoor  vacuum circuit breaker is an three-phase high-voltage electric equipment of AC50HZ and rated voltage 40.5KV.The additional spring operating mechanism or electromagnetic operation mechanism may be opened and closed electrically in a far distance,also can be stored energe,opened and closed manually in site.The design performance confirms to GB1984-89 AC HV Circuit breaker and IEC-56 HV AC Circuit Breaker .

It is applicable to indurstrial and mining enterprises,transformer substations and other power transmission and distribution systems,used as control and protection switch ;

it is especially suitable for indurstries like metallurgy,arc steel and so on where require frequent operation ,serving as control and protection device.it suitable for making and breaking the load current ,over-load current and short-circuit current of urban or rural distribution system.

Normal service condition:

1) The altitude above sea level does not surpass 1000m
2) Surrounding air temperature:
a) Upper limit: +40°C
b) Lower limit general area: -30°C
c) High and cold area: -40°C
3) The wind pressure does not surpass 2.2kPa (equal to wind speed 34m/s)
4) The earthquake intensity does not surpass 8°
5) Not frequent fierce vibration place
6) The ordinary installment place should the not serious influence isolator insulation
and the electric conduction ability gas, the vapor, the chemical properties
deposition, the salt mist, the dust and other explosive, corrosive matter
7) Antifouling is suitable for the heavy contamination area, but should not have
causes of the fire and the explosive

characteristics:

it complies with the standard GB1948-89.Characterized with resonable structure ,simple maintenance,safe and reliable operation.