¡¡ ¡¡
Vacuum-circuit :
  ZW8-12 series of outdoor

¡¡



General Description :

ZW8-12 outdoor vacuum circuit breaker is three-phase A.C 50Hz Outdoor high voltage distribution equipment with 12KV rated voltage and below, which can be used for opening and closing loading current, overloading current and short-circuit. If it is connected with computer remote control system and data wireless transmission terminal etc, the remote control opening and closing function can be achieved. This is the optimum unolled equipment for remaking the town and country's electric net.

it is equipped with CT23 type spring energy-stored operating mechanism. Energy-stored, opening and closing can be achieved by motor or by manual.

Applying ambient conditions :

1. Ambient temperature : The max. temperature should be +40¡É. The min. temperature should be -30¡É

2. The height above sea level should be no higher than 1000m.

3. Wind pressure should be on more than 700pa  (It is equivalent to wind speed of 34m/s)

4. The air filthy should be with in III degree, Frequently violent vibration should be forbidden.

Main Technical Specification :
¡¡
Name Unit Data
Rated Voltage kV 12
Rated current A 630
Rated power frequency withstand voltage (dry test/wet test) kV 42/34
Rated short time withstand current kA <20
Rated withstand current (peak) kA <50
Rated short-circuit breaking current kA <20
Rated  short-circuit making current kA <50
Rated lighting impulse withstand voltage kA 75
Rated duration of short circuit S 4
Rated making operations of short circuit breaker Cycles 30
Rated voltage of store energy motor V Dc220, 110 AC220,110
Power of energy-stored motor W 200
Power of opening and closing coil V -220,-110
Current of closing coil A 1.1
Current of opening coil A 0.5  0.99  0.51
Current if overloading release A 5


The Constructions Characteristics :

Construction of ZW8 Vacuum Circuit Breaker :

Integral construction with three-phase in one box
Vacuum circuit breaker
Spring operating mechanism
Insulating system
Conductive loop
Box cover/enclosure
Hermetic parts

The feature of ZW28 series :
It can be equipped with 50/5, 100/5, 200/5, 400/5, 630/5 current transformer according to customers requirement.
Outside insulator adopted the material of silicon rubber bushing with high pressure.
Inside insulator adopted compound insulating material.
Inside multiple-taps current mutual transformer can be used for protections and measurement.
Bifilar-wound current mutual transformer can be used for protection and measurement. If additionally assembled with voltage mutual transformer. auto-recloser, auto-sectional switch, then autoimmunization of power distribution protection and the function of FOUR REMORE can be achieved. And it is additionally fitted with with compound controller (in order to eliminate strong current while closing switch) it can be mounted isolated switch.

Features Of ZW Series VCB :
It is the optimum match between the vacuum circuit beaker and operating mechanism.
Having been adopted the vacuum interrupter with Vertical magnetic field. which has strong breaking and overloading current capacity to make the VCB reach higher technical specification.
It is absolutely safe and reliable.
It can meet customer's requirement for its various specifications.
Good quality and reasonable price, It is a best choice for un-oiled remaking to town and country's electric net.

¡¡


¡¡

¡¡

    
¡¡

Copyright(c)since 2003 Reliance Corp. All right reserved
1304, Kumkwang Benesta,1149-2, Jung-Dong, Wonmi-Gu,
Bucheon-city, Gyeonggi-do 420-020, KOREA