 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 :
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| 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.
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