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Huatuo groupKeep improving and focus on quality
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Huatuo groupKeep improving and focus on quality
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ZW20-12 outdoor on-column vacuum circuit breaker
Product Details
Product Summary
ZW20-12 type outdoor high voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker"）Rated voltage 12kV, three-phase AC 50Hz outdoor distribution equipment. Vacuum arc extinguishing and SF & gas are used as the insulation medium. It is mainly used to open and close the load current, overload current and short-circuit current of agricultural network, urban network and small power system. The overall structure of the product is three-phase common box, three-phase vacuum interrupter is placed in the metal box, variable pressure performance is reliable, high insulation strength.
Model meaning
|
ZW |
20 |
12 |
T |
630 |
25 |
|
Outdoor on-column vacuum circuit breaker |
Design serial number: 20 (box type) |
Rated voltage: 12kV |
spring operating mechanism |
Rated current: 630A |
Short-time withstand current: 25kA |
Working conditions
Altitude: not more than 2000m;
Surrounding air temperature:-40°C ~ 40°C, daily temperature difference: daily temperature change is not more than 25°C;
Wind speed: not more than 35 m/s;
No flammable, explosion hazard, strong chemical corrosion (such as various acids, alkalis or smoke, etc.) and violent vibration of the place.
Technical parameters
|
Project |
Unit |
Parameter Value |
|
Rated voltage |
kV |
12 |
|
Rated frequency |
Hz |
50 |
|
Rated current |
A |
630 |
|
Temperature rise test current |
1.1lr |
|
|
Rated power frequency Imin withstand voltage (relative to ground) |
kV |
42 |
|
Rated power frequency Imin withstand voltage (fracture) |
kV |
48 |
|
Peak rated lightning impulse withstand voltage (relative to ground) |
kV |
75 |
|
Peak rated lightning impulse withstand voltage (port) |
kV |
85 |
|
Rated short-time withstand current |
kA |
25 |
|
Rated short-time withstand current duration |
s |
4 |
|
Rated peak withstand current |
kA |
63 |
|
Loop resistance |
μΩ |
≤120 |
|
Mechanical life |
10000 |
|
|
Partial discharge (1.1Ur) |
≤ 10pC |
|
|
Protection level |
IP67 |
|
|
Rated pressure of SF6 gas (20°C gauge pressure) |
MPa |
0 |
|
Annual leakage rate of SF6 gas |
<0.1% |
Key words:
ZW20-12 outdoor on-column vacuum circuit breaker
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