ZW8-12 Series Outdoor 630A 12kV Vacuum Circuit Breaker Stainless Steel Intelligent Automatic Vacuum Load Switch
Product Description:
The ZW8-12 outdoor vacuum circuit breaker is suitable for three-phase AC outdoor high-voltage switchgear with a rated voltage of 12kV and a rated frequency of 50Hz. It is mainly used in the distribution systems of 10kV urban and rural power grids to switch on or off load currents and short-circuit fault currents. It is one of the most widely used, mature, and stable products in the power system.
Application:
1.Power distribution: Outdoor vacuum circuit breakers are widely used in power distribution systems to switch and protect distribution transformers, feeders, and other equipment. They are commonly installed on outdoor poles, substations, and switchgear.
2.Utility-scale renewable energy: Outdoor vacuum circuit breakers are used in utility-scale renewable energy projects, such as wind and solar farms, to switch and protect inverters and other equipment.
3.Railway systems: Outdoor vacuum circuit breakers are used in railway systems, such as signaling systems and railway infrastructure, to switch and protect electrical equipment.
4.Mining operations: Outdoor vacuum circuit breakers are used in mining operations to switch and protect electrical equipment in harsh outdoor environments.
5.Oil and gas industry: Outdoor vacuum circuit breakers are used in the oil and gas industry to switch and protect electrical equipment, such as pumps, compressors, and pipelines.
Feature:
1.It has the ability to resist pollution, with internal insulation consisting of air and epoxy resin composite insulation.
2.Equipped with a spring-stored energy operating mechanism.
3.Can be equipped with single-side (left-side) or double-side disconnecting switch and external potential transformer (PT)
Condition:
Ambient Temperature:-40℃~+70℃ (average daily temperature not exceeding +40℃)
Altitude:>1000m(max. 3000m)
Ambient Humidity:Average daily relative humidity not more than 95%, average monthly relative
Pollution level:Level IV
Speed of Maximum Wind:700Pa (equivalent to wind speed 35m/s)
Earthquake intensity: 8 level
Technical Parameter:
| Serial No. |
Parameter |
Unit |
Data |
| 1 |
Rated voltage |
kV |
12 |
| 2 |
Rated insulation level |
1min Industrial frequency withstanding voltage |
Dry Test |
42 |
| Wet Test |
34 |
| Lightning surge withstand voltage (Peak) |
75 |
| 3 |
Rated Current |
A |
630 |
| 4 |
Rated short-circuit breaking current |
kA |
20 |
| 5 |
Rated short-circuit breaking current times |
time |
30 |
| 6 |
Rated short-circuit switching current (peak) |
kA |
50 |
| 7 |
Rated peak withstanding current |
50 |
| 8 |
Rated short time withstand current |
20 |
| 9 |
Rated short-circuit duration |
S |
4 |
| 10 |
Breaking time
(Separate excitation decoupling) |
Max. operating voltage |
ms |
15-50 |
| Rated operating voltage |
30-60 |
| Min. operating voltage |
| 11 |
Closing time |
25-50 |
| 12 |
Full disconnection time |
≤100 |
| 13 |
Arc burning time |
≤20 |
| 14 |
Mechanical lifetime |
time |
10000 |
| 15 |
Closing function |
J |
70 |
| 16 |
Rated input power of energy storage motor |
W |
＜250 |
| 17 |
Rated operating voltage/ rated auxiliary circuit voltage |
V |
DC220 |
| AC220 |
| 18 |
Energy storage time at rated voltage |
S |
＜10 |
| 19 |
Overcurrent decoupler |
Rated Current |
A |
5 |
| Accuracy of decoupling current |
% |
±10 |
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