Outdoor high-voltage AC vacuum circuit breaker
Share to
- 产品描述
-
The ZW7-40.5 series outdoor high-voltage AC vacuum circuit breaker offers advantages such as safe and reliable performance, easy maintenance, and a long maintenance cycle. Since the moving and fixed contacts of this circuit breaker are sealed inside a vacuum interrupter chamber, using vacuum as both the insulating and arc-extinguishing medium, it possesses a range of advantages that other types of switches cannot match. This product is suitable for use in 40.5 kV, 50 Hz three-phase power distribution systems for switching load currents, overload currents, and short-circuit currents.
No.
Item
Unit
Data
1
Rated voltage
KV
40.5
2
Rated insulation level
1 min power frequency withstand voltage
dry test
KV
95
wet test
KV
80
Lightning impulse withstand voltage (peak)
KV
185
3
Rated current
A
1250/1600/2000/2500
4
Rated short-circuit breaking current
KA
20/25/31.5
5
Rated operating sequence
O–0.3s–CO–180s–CO
6
Rated capacitor bank breaking current
A
400
7
Number of operations at rated short-circuit breaking current
TIMES
20
8
Rated short-circuit making current (peak)
KA
50/63/80
9
Rated peak withstand current
KA
50/63/80
10
Rated short-time withstand current
KA
20/25/31.5
11
Rated short-circuit duration
S
4
12
Total breaking time
S
≤0.08
13
Mechanical life
TIMES
10000
14
Rated control voltage and auxiliary circuit rated voltage
V
220、110
15
Contact gap
MM
22±2
16
Contact overtravel
MM
4±1
17
Average opening speed
M/S
1.5±0.2
18
Average closing speed
M/S
0.7±0.2
19
Opening time
MS
≤3
20
Closing time
MS
≤2
21
Closing bounce time
MS
≤150
22
Three-phase synchronization of opening and closing
MS
≤60
23
DC resistance per phase circuit
MΩ
≤100
Above mentioned parameter are only for reference, Hosun is able to design products according to specific requirements from end users.
Keywords:
Outdoor high-voltage AC vacuum circuit breaker
Address
No.2, Ruzhu Road, Sidu Electrical mechanical industrial Park, Jiangshan City, Zhejiang, China
Yiwu Office: Room 1006, Building B, Shihang Center, Futian Street, Yiwu, Zhejiang, China