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Yangzhou Ke Yu Electric Power Co., Ltd.
Address: No. 97, Zhongxin Road, Automobile Industrial Park, Yizheng City, Yangzhou City
Phone: 086-514-83900666
E-mali：keyudl09@126.com
Website: www.keyudl.com
KW20-12 type outdoor intelligent spring vacuum circuit breaker
General introduction
KW20-12 outdoor smart spring vacuum circuit breaker is a self-developed company in a box-type spring operating mechanism circuit breakers. Mainly used for breaking, closing the load current in the power system, overload current and short circuit current. Suitable for substation and industrial and mining enterprises in power distribution system for protection and control, more suitable for rural power grids and frequent operation of the place.
The switch adopts vacuum mode arc extinguishing, SF6 gas insulation, excellent overall sealing, internal filled with "zero" gauge pressure SF6 gas, no possibility of gas leakage, high reliability, maintenance-free.
Reference Standard
| GB1984 | AC high voltage circuit breaker |
| GB/T 11022 | High-voltage switchgear and control equipment standard common technical requirements |
| GB/T 311.1 | High-voltage power transmission equipment with insulation |
| GB/T 3309 | High-voltage switchgear at room temperature mechanical test |
| DL/T 593 | Common high-voltage switchgear ordering technical guidance |
| DL/T 402 | AC high voltage vacuum circuit breaker ordering technical conditions |
The use of environmental conditions
◆Working temperature： -40～+70℃
◆Work environment humidity：0～95%
◆Place of work elevation： ≤3000 m
◆Wind pressure： ≤ 700 Pa
◆Ice thickness：≤10mm
◆External insulation contamination level： Ⅳ
◆seismic intensity：≤ 8°
Note: This product is not suitable for fire, explosion hazard, chemical corrosion and severe vibration and other places.
Model Description
Product model and meaning：
Technical Parameters
Circuit breaker switch technical parameters
| number |
Name |
unit |
Parameters |
|
1 |
Rated voltage |
kV |
12 |
|
2 |
Rated current |
A |
630/1250 |
|
3 |
Rated frequency |
Hz |
50 |
|
4 |
Rated lightning impulse withstand voltage |
kV |
Ground 75 / fracture 85 |
|
5 |
Rated short-time power frequency withstand voltage（1min） |
kV |
Wet test 34, dry test 42 / fracture 48 |
|
6 |
Rated short-circuit breaking current |
kA |
20/25 |
|
7 |
Rated short circuit breaking times |
Times |
30 |
|
8 |
Rated thermal current (4s) |
kA |
20/25 |
|
9 |
Rated dynamic current stability |
kA |
50/63 |
|
10 |
Rated short-circuit current |
kA |
50/63 |
|
11 |
Mechanical life |
Times |
10000 |
|
12 |
Secondary circuit frequency withstand voltage（1min） |
KV |
2 |
|
13 |
Rated operating sequence |
|
O-0.3S-CO-180S-CO |
|
14 |
net weight |
KG |
100 |
Mechanical characteristics parameters
| number |
Name |
unit |
Parameters |
|
1 |
stroke |
mm |
11±1 |
|
2 |
Contact distance |
mm |
9±1 |
|
3 |
Overtravel |
mm |
3±1 |
|
4 |
Closing time |
ms |
≤60 |
|
5 |
Opening time |
ms |
≤60 |
|
6 |
Closing different points |
ms |
≤2 |
|
7 |
Closing bounce |
mm |
≤2 |
|
8 |
Average opening speed |
m/s |
1.0±0.2 |
|
9 |
Average closing speed |
m/s |
0.6±0.2 |
|
10 |
Mechanical number |
Times |
10000 |
|
11 |
Main circuit resistance |
μΩ |
≤80 |
|
12 |
Main circuit resistance (with isolation switch) |
μΩ |
≤ 180 |
Dimensions
Products
Contact
Address: No. 97, Zhongxin Road, Automobile Industrial Park, Yizheng City, Yangzhou City
Phone: 0514-87520111
E-mali：kydl09@126.com
Website: www.keyudl.com
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