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ZW20-12 Outdoor high voltage pole-mounted 11KV vacuum circuit breaker
ZW20B -12Series type indoor high voltage vacuum circuit breaker is rated voltage 12kV, three-phase AC 50Hz Indoor high-voltage switchgear ,apply for power stations, substations, and industrial and mining enterprises to control or protection transmission and distribution systems , specially for the important high altitude breaking load and frequent operation place.
ZW20-12/T630-20
ZW: outdoor vacuum circuit breaker
20B:design number
12: rated voltage(kV)
T:spring operating mechanism
630:rated current(A)
20:rated short-circuit breaking current(kA)
1.Ambient temperature: not higher than +40 °C, not less than -15°C
2. Altitude: not exceed 1000m.
3. Relative humidity: daily average of not more than 95%, month average of not more than 90%.
4. Earthquake intensity: not more than ten.
5. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.
NO |
Item |
Unit |
Parameters |
1 |
Rated voltage |
KV |
12 |
2 |
Rated Frequency |
HZ |
50 |
3 |
Rated Current |
A |
630.1000 |
4 |
Rated short-circuit breaking current |
KA |
12.5,16,20,25 |
5 |
Rated peak withstand current |
KA |
31.5,40,50,63 |
6 |
Rated short-time withstand current |
KA |
12.5,16,20,25 |
7 |
Rated short-circuit closing current (peak) |
KA |
31.5,40,50,63 |
8 |
Mechanical life |
Times |
10000 |
9 |
Rated short-circuit breaking current breaking number |
Times |
30 |
10 |
Rated breaking current number |
Times |
10000 |
11 |
1min power frequency withstand voltage |
KV |
42 |
12 |
Rated lightning impulse withstand voltage |
KV |
75 |
Adjust the parameters of mechanical properties | |||
No |
Item |
Unit |
Parameters |
1 |
Contact distance |
mm |
9+-0.5 |
2 |
Contact Over-travel |
mm |
3±0.5 |
3 |
Closing speed |
m/s |
0.6±0.2 |
4 |
Opening speed |
m/s |
1.2±0.2 |
5 |
Contact closing spring time |
ms |
≤2 |
6 |
Center distance |
mm |
135±1.5 |
7 |
Three phase closing opening asynchrony |
ms |
≤2 |
1.Over 20 years of manufacturing experience with good quality & stable product performance.
2. Hossin provides full line of MV-HV electrical products, including drop-out fuse, disconnector, surge arrester, vacuum circuit breaker, fuse, load switch, insulator etc.
3. Quick feedback, Timely quotation, Fast delivery
4. Complete set of testing machine to ensure product quality.
5. Hossin can customize non-standard product as per client’s requirement.
6. Hossin sells pressing parts& pressing mould at low price.
7. Hossin offers electrical installation & commission service.
To order the vacuum circuit breaker, please let us know below info:
1. Rated Voltage
2. Rated Current
3. Rated Breaking Current
4. Fixted type or Draw-out Type
Send Inquiry to This Supplier
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