ZW32-40.5F (M) outdoor high-voltage intelligent (permanent magnet) vacuum circuit breaker

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Overview

The ZW32-40.5F(M) outdoor high-voltage intelligent (permanent magnet) vacuum circuit breaker mainly consists of integrated solid-sealed poles, a current transformer, an operating mechanism, and a housing. A disconnecting switch can be added. This model of circuit breaker features a miniaturized design with a high-quality steel housing. The current transformer can be selected according to user needs.

This device is mainly used in medium-voltage overhead power grids for switching on and off load currents, overload currents, and short-circuit currents.

Model Meaning

ZW32-40.5F (M) outdoor high-voltage intelligent (permanent magnet) vacuum circuit breaker

Usage conditions

◆Ambient air temperature: -30℃~+60℃;

◆Altitude: Not exceeding 3000 meters;

◆Wind speed not exceeding 34m/s;

◆Vibrations or ground movements from outside the switching and control equipment are negligible;

◆Soiliness level: IV;

◆Storage temperature: -40℃ ~ +85℃.

Main technical parameters

Main technical parameters of circuit breaker

Project	Unit	Parameter
Rated voltage	kV	40.5
Rated current	A	1250/1600
Rated frequency	HZ	50 or 60
Power frequency withstand voltage 1min (wet) (dry) phase-to-phase, to ground/break	kV	81
Lightning impulse withstand current (peak value) phase-to-phase, to ground/break	kV	185
Rated short-circuit breaking current	kA	25/31.5
Rated short-circuit making current (peak value)	kA	63/80
Rated peak withstand current	kA	63/80
4S Short-Time Withstand Current	kA	25/31.5
Rated operating cycle		Split – 0.1s – Combine – 3s – Platform – 6s – Combine – 60s – Restore
Rated short-circuit current breaking times	次	30
Mechanical life	次	10000
Mechanism control voltage	V	AC/DC220
Secondary circuit 1min power frequency withstand voltage	kV	2

Main technical parameters

Main technical parameters of circuit breakers

Project	Unit	Parameter
Contact gap	mm	16±1
Contact overtravel	mm	4±0.5
Opening speed	m/s	1.4-1.8
Closing speed	m/s	0.4-0.8
Contact closing bounce time	ms	≤5
Inter-phase center distance	mm	460±2
Asynchronous opening and closing of three-phase circuit breakers	ms	≤2
Resistance of each phase conductive circuit	μΩ	<80
Closing time	ms	≤ 100
Opening time	ms	≤ 50
Weight	Kg	270