定西ZW43-12 series outdoor intelligent high-voltage vacuum circuit breaker
Product Description
Product Overview
The ZW43-12 outdoor high-voltage vacuum circuit breaker is a 12kV, three-phase AC 50Hz outdoor power distribution device. It is suitable for use in substations and industrial and mining enterprise power distribution systems for protection and control, as well as in rural power grids with frequent operations. It can also be used as a ring network power supply unit and terminal equipment for power distribution, control, and protection of electrical equipment. When combined with an isolating switch, it can also be used as a sectionalizing switch. It is mainly used to open and close load current, overload current, and short-circuit current in the power system. The vacuum arc extinguishing chamber uses patented sealing technology, and the external insulation uses a silicone rubber sheath, resulting in a long lifespan, high reliability, good weather resistance, easy transportation, and high cost-effectiveness; the operating mechanism uses a miniaturized, highly reliable spring operating mechanism, with a simple structure and a mechanical life of up to 20,000 times; if an advanced permanent magnet mechanism is used, the mechanical performance is even more stable and reliable; and it can be equipped with a manual switching mechanism, allowing for manual switching operations on-site if necessary. This circuit breaker can be equipped with a controller to form a recloser, realizing the "four remote" functions of remote control, remote measurement, remote signaling, and remote adjustment. Product features: no risk of combustion or explosion, maintenance-free, small size, light weight (less than 100kg), long lifespan (tens of thousands of times), safe and reliable, simple operation, easy maintenance and installation.
Main Technical Parameters
| Serial Number |
Name |
Unit |
Data |
| 1 |
Rated Voltage |
KV |
12 |
|
2 |
1min Power Frequency Withstand Voltage (Dry) Phase-to-Phase/Phase-to-Ground/Open Circuit |
42/48 |
|
| Lightning Impulse Withstand Voltage (Peak) Phase-to-Phase/Phase-to-Ground/Open Circuit |
75/85 |
||
| 3 |
Rated Current |
A |
630/1250 |
| 4 |
Rated Short-Circuit Breaking Current |
KA |
20/25 |
| 5 |
Rated Capacitor Bank Breaking Current |
A |
400/630 |
| 6 |
Rated Operating Sequence |
Open-0.3s-Close-Open-180s-Close-Open |
|
| 7 |
Rated Short-Circuit Closing Current (Peak) |
KA |
50/63 |
| 8 |
Rated Peak Withstand Current |
||
| 9 |
Rated Short-Time Withstand Current |
20/25 |
|
| 10 |
Mechanical Life |
Times |
10000 |
| 11 |
Rated Operating Voltage |
V |
DC,AC:110,220 |
| 12 |
Operating Mechanism |
Spring Mechanism Permanent Magnet Mechanism |
|
| 13 |
Contact Gap |
mm |
9+1 |
| 14 |
Contact Overtravel |
2.5~4 |
|
| 15 |
Allowable Wear Thickness of Moving Contact |
3 |
|
| 16 |
Opening Speed |
m/s |
1.2±0.2 |
| 17 |
Closing Speed |
0.6±0.2 |
|
| 18 |
Contact Closing Bounce Time |
ms |
≤2 |
| 19 |
Three-Phase Opening and Closing Asynchronism |
≤2 |
|
| 20 |
Resistance of Each Phase Conductive Circuit (with Isolation) |
μΩ |
<80(140) |
Outline and Dimensions
Contact Number：+8613623894894
Contact Number：+8615136360288
Email：13623894894@126.com
Address: No. 1, High-tech Road, Hebin Street Office, Yichuan County, Luoyang City, Intelligent Equipment Industrial Park
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