ZW7-40.5F(M) Outdoor High Voltage Intelligent (Permanent Magnet) Vacuum Circuit Breaker

Overview

The ZW7-40.5F(M) Outdoor High-Voltage Intelligent (Permanent Magnet) Vacuum Circuit Breaker features a split column design and utilizes a highly reliable spring or permanent magnet operating mechanism. This device is primarily used in medium-voltage overhead line power grids for switching load currents, overload currents, and short-circuit currents. With its advanced design, the ZW7-40.5F(M) ensures reliable and efficient performance in outdoor environments, offering enhanced operational stability and durability for overhead line applications. The permanent magnet operating mechanism, in particular, provides excellent performance with minimal maintenance requirements, making it suitable for environments with frequent operations.

Technical Parameters

Item	Unit	Data
Rated Voltage	kV	40.5
Rated current	A	1250/1600
Rated frequency	Hz	50 or 60
Industrial frequency withstand voltage 1min (wet) (dry) phase to phase, to ground/outlet	kV	80 95/95
Lightning impulse withstand current (peak) phase-to-phase, to ground/outlet	kA	185
Rated short-circuit breaking current	kA	25/31.5
Rated short-circuit closing current (peak)	kA	63/80
Rated peak withstand current	kA	63/80
4Short-time withstand current	kA	25/31.5
Rated operating cycles		O-0.1s-CO-3s-CO-6sCO-60s Recovery
Rated short-circuit breaking current	time	30
Mechanical life	time	10000
Mechanism control voltage	V	AC/DC220
Secondary circuit 1min frequency withstand voltage	kV	2

Item	Unit	Data
Contact opening distance	mm	18±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
Center distance between phases	mm	710±2
Three-phase switching and closing non-synchronous	ms	≤2
Three-phase switching and closing non-synchronous	μΩ	<80
Closing time	ms	≤ 100
Breaking time	ms	≤50
Weight	KG	800