ZW7-40.5
Adopting mature vacuum arc extinction technology, the breaker delivers strong breaking performance and stable insulation. It features arc-free, low-noise and pollution-free operation, supporting frequent switching and long-term full-load stable operation.
Fitted with a high-stability spring operating mechanism, ZW7-40.5 operates smoothly and flexibly with low mechanical wear. It can quickly cut off short-circuit faults and ensure long-term reliable power grid operation.
The integrated fully sealed structure undergoes professional outdoor anti-corrosion treatment, offering excellent waterproof, dustproof and anti-aging performance. It adapts to high-altitude, humid, saline-alkali and heavily polluted harsh outdoor environments.
With a rational overall layout and sturdy structure, the equipment is easy to install and debug on site. It requires minimal daily maintenance and effectively reduces long-term operation costs of power distribution projects.
As essential core protection equipment for 40.5kV outdoor power systems, ZW7-40.5 vacuum circuit breaker features stable performance and high safety. We provide global customers with factory direct supply, complete certifications and professional after-sales service.
Product Details
ZW7-40.5
Outdoor high voltage Vacuum circuit breaker
□ Meaning of type
口 Introduction
□The ZW7-40.5 outdoor HV vacuum breaker is a kind of outdoor HV switching devices used in three-phase AC50Hz.40.5KV.It uses spring operating mechanism or electromagnetic operating mechanism;it can be controlled to switch-on/off remotely;it can also be used to controlenergy storage and switch
-on/off manually The breaker conforms to standards of GB1984-89ACHVbreaker andIEC56ACHVbreaker.It is usedfor protecting and controlling distribution systems in transformer substations,operating in gear and protecting the circuit in country electric nets,industrial and mining enterprises when short-circuit occurs.The breaker has porcelain post structure.The upper knob insulator has vacancy arc-extinguishing chamber while the nether one is post knob insulator.The breaker is suitable for the place where-frequent operation is allowed.The breaker has the performance of reliable seal,aging resistance,
and flame resistance,exploslon resistance,long mechanical life,simple installation and convenient debugging.
□Outline dimension
□ Technical data
|
No. |
N a m e |
Unit |
V a l u e |
||
|
1 |
Rated voltage |
kV |
40.5 |
||
|
2 |
Rated current |
A |
1600 |
||
|
3 |
Rated short-circuit breaking current |
kA |
31.5 |
||
|
4 |
)Rated short-circuit switching current(peak) |
80 |
|||
|
5 |
Ratedshortime withstand(themal stability)current |
31.5 |
|||
|
6 |
Rated shortime withstand(dynamic stability)current |
80 |
|||
|
7 |
Rated short-circuit duration time |
|
4 |
||
|
8 |
Rated insulating level |
Power frequency withstandvoltage(1min) |
Dry. |
kV |
95 |
|
W e t . |
kV |
80 |
|||
|
Lightning impulse withstand voltage(peak) |
kV |
185 |
|||
|
9 |
Rated operating sequence |
|
O-0.3s-CO-180s-OC |
||
|
10 |
Breaking time of rated short-circuit breaking curent |
次 T i m e |
20 |
||
|
11 |
Breaking time(with spring operating mechanism) |
ms |
≤80 |
||
|
12 |
Mechanical life |
次 |
10000 |
||
|
13 |
Rated operating voltage |
V |
AC220 DC220 |
||
|
14 |
Clearance between contacts |
mm |
20+3 |
||
|
15 |
Over stroke of contacts |
mm |
5±1 |
||
|
16 |
Bounce time |
ms |
≤5 |
||
|
15 |
Loop DC resistance of each phase |
μΩ |
120 |
||
|
18 |
Outine dimensionofbreaker(lengthxwidthxheight) |
mm |
2200×700×2500 |
||
|
19 |
Circuit breaker with the total weight of institutions |
kg |
1100 |
||
口Order notice
□The type and the specification of the circuit breaker.
□Rated electric parameter(voltage,current,rated short-circuit breaking current and so on).
□Environmental condition(temperature,altitude,filth level and so on).
□Operating voltage and motorvoltage of operation mechanism.
□Quantity,current ratio,class combination,secondary load of inner or outer current transformer.
□Name and quantity of the accessories and tools if required.(deal separated with breaker)
Online Inquiry
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