OEM ZW32-12 Outdoor High Voltage Vacuum Circuit Breaker Manufacturer, Factory

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OEM ZW32-12 Outdoor High Voltage Vacuum Circuit Breaker Manufacturer, Factory

ZW32-12 outdoor vacuum circuit breaker is a switchgear suitable for high-voltage power distribution systems with rated voltages of 12kV and below. It is designed for outdoor environments and has good waterproof, dust proof and corrosion resistance. The circuit breaker adopts advanced vacuum arc extinguishing technology, which can quickly cut off the current in the case of short circuit and overload to ensure the safety and stability of the power system. It has a good protection level (such as IP65), can adapt to various harsh climatic conditions, and is suitable for long-term use in outdoor environments. With its excellent performance and reliability, it has become an indispensable and important equipment in modern high-voltage power distribution systems and is widely used in various power facilities.

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Product Description

Overview

ZW32-12 outdoor vacuum circuit breaker (hereinafter referred to as circuit breaker) is an outdoor power distribution equipment with a rated voltage of 12kV and three-phase AC50Hz. It is mainly used for breaking and closing load current, overload current and short-circuit current in the power system. It is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises, as well as places for frequent operation of rural power grids.

This circuit breaker has the characteristics of small size, lightweight, anti-condensation, maintenance-free, etc., and can adapt to harsh climatic conditions and dirty environments.

Model meaning

Conditions of normal use

Ambient temperature: -40°C ~ +40°C;
Altitude: 2000m and below;
The surrounding air can be polluted by dust, smoke, corrosive gas, steam or salt spray, and the pollution level is III;
The wind speed should not exceed 34m/s (equivalent to 700Pa on the cylindrical surface);
Special conditions of use: The circuit breaker can be used under normal conditions different from those specified above, please consult for special requirements.

Main technical parameters

Serial Number	Project	Unit	Parameter
1	Rated voltage	kV	12
2	Rated frequency	Hz	50
3	Current rating	A	630
4	Rated short-circuit interrupting current	kA	20
5	Rated peak withstand current (peak)	kA	50
6	Rated short-time withstand current	kA	20
7	Rated short-circuit closing current (peak)	kA	50
8	Mechanical life	Order	10000
9	Rated number of short-circuit breaking current interruptions	Order	30
10	Power frequency withstand voltage (1min):(wet)(dry) interphase, ground/fracture	kV	42/48
11	Withstand voltage(peak)of lightning impulse interphase, to ground/fracture	kV	75/85
12	The secondary circuit has a power frequency withstand voltage of 1min	kV	2
13	Static and dynamic contacts allow for wear of cumulative thickness	mm	3
14	Overcurrent tripper rated current	A	5
15	Current transformer current ratio	-	200/5 400/5 600/5
16	Contact opening distance	mm	9±1
17	Contact overtravel	mm	2±0.5
18	Average opening speed	m/s	1.2±0.3
19	Average closing speed	m/s	0.6±0.2
20	Opening time	ms	20~40
21	Closing time	ms	30~60
22	Closing bounce time	ms	≤2
23	Three-pole closing and opening are of different phases	-	≤2
24	DC resistance of each phase loop	μΩ	≤80 (≤150 with isolation)

Frequently Asked Questions

Q1: What is the rated voltage of the ZW32-12 outdoor vacuum circuit breaker?

A: The ZW32-12 outdoor vacuum circuit breaker is designed for power distribution systems with a rated voltage of 12kV and three-phase AC 50Hz.

Q2: Where is this circuit breaker typically installed and used?

A: It is ideal for protection and control in substations, industrial and mining enterprises, and frequently operated sites within rural power distribution grids.

Q3: How does the ZW32-12 perform under extreme weather conditions?

A: Designed for durability, it features anti-condensation, lightweight, and maintenance-free qualities. It operates effectively in ambient temperatures ranging from -40°C to +40°C and altitudes up to 2000 meters.

Q4: What is the mechanical service life of this outdoor vacuum circuit breaker?

A: The unit features a robust mechanical design ensuring a rated mechanical life of up to 10,000 operation cycles.

Q5: Can it withstand heavy wind loads in coastal or open areas?

A: Yes, it is rated to withstand maximum wind speeds up to 34m/s, which corresponds to 700Pa of wind pressure acting on the cylindrical surface.

Q6: Are customized parameters available for specialized working conditions?

A: Yes. While normal service conditions are specified, the circuit breaker can operate under special environmental requirements. Please make inquiries for custom solutions.