ZW32M(T)-12 Outdoor High-Voltage Vacuum Circuit Breaker / Primary and Secondary Integration (with Directional Judgment)

ZW32M(T)12 Outdoor High-Voltage AC Vacuum Circuit Breaker Product Introduction

Complete Product Introduction

1. Product Brief Introduction

The ZW32M(T)-12 type outdoor high-voltage AC vacuum circuit breaker adopts vacuum arc-extinguishing principle and permanent magnet operating mechanism (spring mechanism), integrating microprocessor technology, modern network communication technology and new switch manufacturing technology. Its rated voltage is 12kV, 50Hz three-phase AC outdoor power distribution equipment. This product is widely used as a sectionalizing or connecting switch in urban power grids, or in rural power grid systems and outdoor substation outlet lines, and can effectively complete the work of reclosing, making and breaking load current and short-circuit current.

2. Model Meaning & Explanation

The coding of the product model contains the core structural characteristics and parameter information of the circuit breaker. The specific meaning of each part of the model is as follows:

ZW32MT-12/630-20

ZW - Outdoor Vacuum Circuit Breaker
32 - Design Serial Number
M - Permanent Magnet Operating Mechanism
T - Spring Mechanism
12 - Rated Voltage (kV)
630 - Rated Current (A)
20 - Rated Short-Circuit Breaking Current (kA)
Additional device code:
A - With PT (Potential Transformer) additional device
B - With additional external device
P - Shell type: stainless steel plate electrophoresis (ordinary steel plate can be omitted)
S - Mechanism type: manual; electric operated can be omitted

3. Normal Operating Environment

Ambient air temperature: -40℃ ~ +55℃, daily temperature difference: 25K;
Altitude: not exceeding 2000m;
Wind speed: not exceeding 35m/s;
Pollution grade: Grade IV;
Installation site: places without fire, explosion hazard and chemical corrosion;
Earthquake intensity: not exceeding 8 degrees.

4. Product Characteristics

Adopts advanced vacuum arc-extinguishing technology, with high breaking capacity, long electrical life and no maintenance for arc-extinguishing chamber;
Integrates permanent magnet/spring operating mechanism, featuring simple structure, reliable operation and low mechanical failure rate;
Equipped with microprocessor and modern communication technology, supporting remote monitoring and control, meeting the requirements of intelligent power grid;
Designed for outdoor use, with good environmental adaptability, able to operate stably under harsh climate conditions such as high/low temperature and high altitude.

5. Main Technical Parameters

Serial No.	Item	Unit	Data
01	Contact Opening Distance	mm	9±1
02	Contact Over Travel	mm	2
03	Opening Speed	m/s	1±0.2
04	Closing Speed	m/s	0.6±0.2
05	Contact Making and Breaking Time	ms	≤2
06	Phase-to-Phase Center Distance	mm	340±1.5
07	Three-Phase Closing and Opening Asynchronism	ms	≤2
08	Resistance of Each Phase Conductive Circuit	μΩ	<80 (excluding switch and CT)
09	Closing Time	ms	30~80
10	Opening Time	ms	23~45
11	Weight	kg	Approx. 105

6. Ordering Notes

When placing an order for the ZW32M(T)-12 outdoor high-voltage AC vacuum circuit breaker, please provide the following information to ensure that the product meets the actual use requirements:

Exact product model and specification (including additional device codes if needed)
Special requirements for operating mechanism (manual/electric, permanent magnet/spring)
Operating environmental conditions (if exceeding the normal range, such as ultra-high altitude, severe pollution)
Special technical requirements (such as communication protocol, reclosing parameters)