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Chengdu ZW7 Intelligent 35KV Electric Operated High Voltage Vacuum Circuit Breaker
Description: The Chengdu ZW7 intelligent 35KV electric operated high-voltage vacuum circuit breaker U has high mechanical and electrical life. The who
Product details
Chengdu ZW7 Intelligent 35KV Electric Operated High Voltage Vacuum Circuit Breaker
Cable branch boxes, as well as low-voltage switchgear, vacuum circuit breakers, sulfur hexafluoride circuit breakers, isolation switches, load switches, grounding switches
High voltage fuses, high voltage transformers, vacuum contactors, lightning arresters, operating mechanisms, insulators, wall bushings, power fittings, electromagnetic locks
Series products such as electric display devices. Focusing on brand, due to the company's wide range of product models and varying prices
Please consult before placing an order, large quantities are preferred! I have ordered the contract, please confirm and sign it first, and the payment will be made upon delivery.
The pictures are for reference only, please refer to the actual product.
1 Overview
The ZW7-40.5 outdoor high-voltage vacuum circuit breaker adopts a uniquely designed split pole and a highly reliable operating mechanism. This device is mainly used in medium voltage overhead power grids for the purpose of dividing and combining load currents, overload currents, and short-circuit currents.
U has extremely high reliability
U is completely maintenance free throughout its entire lifespan
U has high mechanical and electrical lifespan
The whole machine has a small volume, light weight, and is easy to install
1.1 Usage conditions
Surrounding air temperature: -30 ℃ to+60 ℃;
Altitude: not exceeding 2000 meters;
Wind speed not exceeding 34m/s;
External vibrations or ground movements from switchgear and control equipment can be ignored;
Pollution level: Level IV;
Storage temperature: -40 ℃ to+85 ℃.
1.2 Technical Parameters
Chengdu ZW7 Intelligent 35KV Electric Operated High Voltage Vacuum Circuit Breaker
Main technical parameters of circuit breaker
Serial number |
Project |
unit |
Numerical value |
1 |
rated voltage |
kV |
40.5 |
2 |
Rated current |
A |
1250/1600/2000/2500 |
3 |
Rated frequency |
Hz |
50 or 60 |
4 |
Power frequency withstand voltage for 1 minute (wet) (dry) Interphase, ground/fracture |
kV |
80 95/95 |
5 |
Lightning impulse withstand current (peak value) Interphase, ground/fracture |
kV |
185 |
6 |
Rated short circuit breaking current |
kA |
25/31.5 |
7 |
Rated short-circuit closing current (peak) |
kA |
63/80 |
8 |
Rated peak withstand current |
kA |
63/80 |
9 |
4S short-time withstand current |
kA |
25/31.5 |
10 |
Rated operating cycle |
Split -0.1s - Split -3s - Split -6s - Split -60s Recovery |
|
11 |
Rated short-circuit current breaking times |
order |
30 |
12 |
mechanical life |
order |
10000 |
13 |
Institutional control voltage |
V |
AC/DC220 |
14 |
Secondary circuit 1-minute power frequency withstand voltage |
KV |
2 |
Main mechanical parameters of circuit breakers
Serial number |
Parameter |
unit |
Data |
1 |
clearance between open contacts |
mm |
18±1 |
2 |
Contact overtravel |
mm |
4±0.5 |
3 |
opening speed |
m/s |
1.4-1.8 |
4 |
closing speed |
m/s |
0.4-0.8 |
5 |
Contact closing bounce time |
ms |
≤5 |
6 |
Center distance between phases |
mm |
710±2 |
7 |
Three phase opening and closing asynchrony |
ms |
≤2 |
8 |
Resistance of each phase conductive circuit |
μΩ |
＜80 |
9 |
close time |
ms |
≤100 |
10 |
Opening time |
ms |
≤50 |
11 |
weight |
Kg |
About 800 |
When placing an order, the user is required to provide the following technical information:
1) Circuit breaker model, name, and quantity.
2) Rated current, rated short-circuit operating current.
3) Operation mode and operating voltage.
4) Equipped with current transformers for current ratio.
5) Usage occasions.
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