GeneralVB4 medium-voltage indoor vacuum circuit brea ker is
applicable for three-phase AC power system of rated voltage up to
12~ 24kV 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
ratedcurrent or multi-breaking short circuit current, may be
mounted in the indoor air insulating switchgear like type KYN28 or
AMS, ABB type ZS1 series, etc. This circuit breaker is standards as
GB1984-2003 AC high voltage circuit breaker,JB3855 3.6-40.5Kv
indoor AC High voltage circuit breaker, DL/T403 Specification of
12-40.SKv indoor High voltage vacuum circuit breaker for order as
well as IEC60694. This circuit breaker is made with mature APG
technology. The application of VB4 terminal buffer guarantees the
indoor terminal is ever more reliable in nay operation environment.
VB4can fully meet the requirement of GB, DL IEC, DIN, VDE as well
as standards of otheradvanced industrial countries. Main features1)
Simple structure in linear type ,easy in installation and
maintation. 2) Adopting advanced world famous brand
components in pneumatic parts ,electric parts and operation
parts. 3) High pressure double crank to control the die
opening and closing. 4) Running in a high automatization and
intellectualization,no pollution 5) Apply a linker to connect
with the air conveyor ,which can directly inline with filling
machine . Service condition1.Air temperature: Maximum
temperature: +40ºC; Minimum temperature:-25ºC2.Humidity: Monthly
average humidity 95%; Daily average humidity 90% .3.Altitude above
sea level: Maximum installation altitude: 2500m4.Ambient air not
apparently polluted by corrosive and flammable gas, vapor etc.5.No
frequent violent shake Technical dataAdvanced techniqueThe
circuit-breaker VB4-12is the newest equipment in the voltage class
of 36kV manufactured by Wenzhou Farady Electric Co., Ltd. It is
universal used in power distributing and transforming systems of
power stations, power generators, and secondary substations of
mines, industries and infrastructures. The circuit-breaker
VB4-12has complete type specifications: the rated voltage is 12V,
the rated current is up to 2500A and the rated short circuit
breaking current is up to 31.5kA. The circuit-breaker VB4-12is
equipped with modularized spring operating mechanism which has
characteristic of more convenient maintenance, rapider replacing of
parts and more reliable performance. The circuit-breaker VB4-12
adopts embedded poles that the vacuum interrupter with low
resistance and the primary main electrical circuit are cast in
insulating cylinders by epoxy resin. This structure makes the
breaker have more reliable insulation. The embedded poles of
circuit-breaker VB4-12have the technique of ventilation and
convection. Besides, the vacuum interrupter is with low resistance.
All of these reduce the power consumption and the temperature
rising due to the longtime running of circuit-breaker. The
circuit-breaker VB4-12has perfect performance when it is breaking
short-circuit current or being operated requently. Beside that it
also has the functions of automatic reclosing and reliable
operating. The driving mechanisms of circuit-breaker VB4-12 are
designed by professionals in Faradyand with characteristic of
reliable closing performance, low impact force and longer lifetime.
The mechanical lifetime can be up to 30000 cycles. All of the
mechanism's surface of circuit-breaker VB4-12 is disposed with
special process and lubricative technique. Not only the
rust-resistance capability is improved but also the operating
performance is ensured.The circuit-breaker is also applicable to
humid and hot regions. The circuit-breaker VB4-12has been through
the whole type test in accordance with the standards of GB and IEC.
Detailed ImagesCertificationPacking & DeliveryAbout usZhejiang
Farady Powertech Co.,Ltd TEL:0086-0577-61512688
Fax:0086-0577-61510628 Http:// faradypowertech.en.made-in-china.com
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