ZW32H(T)-12 Outdoor High Voltage Vacuum Circuit Breaker / Primary and Secondary Fusion (with Directional Judgment)

Detail

Overview

The ZW32H(T)-12 type outdoor high-voltage AC vacuum circuit breaker adopts the vacuum arc extinguishing principle and a permanent magnetic operating mechanism (spring operating mechanism), integrating microprocessor technology, modern network communication technology, and new switch manufacturing materials. It is an outdoor distribution device with a rated voltage of 12kV and 50Hz three-phase AC. This product is widely used in urban power grids as a disconnecting or tie switch, or in rural power distribution systems. As an outgoing line switch in outdoor substations, it can effectively perform the functions of a traditional recloser, breaking and closing load current and short-circuit current.

Model Meaning

Operating Environment

1. Ambient air temperature: -40℃ to 55℃, daily temperature variation: 25K;

2. Altitude: not exceeding 2000m;

3. Wind speed: not exceeding 35m/s;

4. Pollution level: Class IV;

5. Installation location: free of flammable, explosive hazards and chemical corrosion;

6. Seismic intensity not exceeding 8 degrees;

Main Technical Parameters

Serial No.	Item	Unit	Data
01	Contact Gap	mm	9±1
02	Contact Overtravel	mm	2
03	Opening Speed	m/s	1±0.2
04	Closing Speed	m/s	0.6±0.2
05	Contact Closing Bounce Time	ms	≤2
06	Phase Center Distance	mm	340±1.5
07	Three-Phase Opening/Closing Asynchrony	ms	≤2
08	Three-Phase Conductor Circuit Resistance	μΩ	<80 (Excluding disconnector and CT)
09	Closing Time	ms	30-80
10	Opening Time	ms	23-45
11	Weight	kg	Approx. 105