VD4 high-voltage indoor vacuum circuit breaker is applicable for
three-phase AC power system of rated voltage up to 36kV and
frequency 50/60HZ,widely used in many fields such as power plant,
transformer substation, petrol chemical industry , metallurgy ,
manufacturing industry , airport, residential area, etc., to
control and protect the electric equipment, especially , It is used
for the occasion that needs infrequent operation at rated current
or multi-breaking short circuit current, may be mounted in the
indoor air insulating switchgear like type KYN61 or AMS, ABB type
ZS3.2 series, etc. This circuit breaker is made with mature APG
technology . The application of VD4 terminal buffer guarantees the
indoor terminal is ever more reliable in nay operation environment.
VD4 can fully meet the requirement of GB, DL, IEC, DIN, VDE as well
as standards of other advanced industrial countries.
a) Air temperature: Maximum temperature: +40ºC; Minimum
b) Humidity: Monthly average humidity 95%; Daily average humidity
c) Altitude above sea level: Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable
gas, vapor etc.
e) No frequent violent shake
++++ Main technical specifications:
|3||Rated current||A||630, … 2500A|
|4||1min Power frequency withstand voltage||kV||95||118|
|5||Lightning impulse withstand voltage||kV||185||215|
|6||Rated short circuit breaking current (peak)||kA||50/63/80|
|7||Rated short breaking current||kA||20, …31.5|
|8||Rated short circuit making current (peak)||kA||50/63/80|
|9||Rated cable(line) charging breaking current||A||50 and 10|
|10||Rated single capacitor bank switching current||A||400|
|11||Rated withstand current (peak)||kA||50/63/80|
|12||Short time withstand current (4s)||kA||20, …31.5|
Note: For short circuit breaking current & rated current is
optional by clients.