ZW43-12 series outdoor intelligent high-voltage vacuum circuit breaker
The ZW43-12 type outdoor high-voltage vacuum circuit breaker is a 12kV rated voltage, three-phase AC 50Hz outdoor power distribution equipment. 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.
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ZW43-12 series outdoor intelligent high-voltage vacuum circuit breaker
- Product details
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- Commodity name: ZW43-12 series outdoor intelligent high-voltage vacuum circuit breaker
The ZW43-12 type outdoor high-voltage vacuum circuit breaker is a 12kV rated voltage, three-phase AC 50Hz outdoor power distribution equipment. 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.
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
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