AB-3S-40.5 Outdoor Pole-mounted Permanent Magnetic Vacuum Circuit Breaker

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Overview

The AB-3S-40.5 series outdoor pole-mounted permanent magnet vacuum circuit breaker is a new generation of pole-mounted intelligent vacuum circuit breaker developed by our company by integrating advanced technologies from home and abroad, drawing on the strengths of various sources, adopting a brand-new design concept, and utilizing high-tech methods. This product can be used as a switch for the main transformer outgoing line of a 35kV substation, or as a pole-mounted switch for the distribution network. Combined with various control units manufactured by our company, it can easily achieve control, protection, satellite monitoring, and communication, making it the preferred equipment for achieving distribution network automation and miniaturization.

Model Meaning

AB-3S-40.5 Outdoor Pole-mounted Permanent Magnetic Vacuum Circuit Breaker

Usage conditions

Operating ambient temperature: not exceeding 40℃; daily average temperature not exceeding 35℃; minimum ambient air temperature -25℃;

Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%; water vapor pressure: daily average not exceeding 2.2 kPa; monthly average not exceeding 1.8 kPa;

Altitude: Not exceeding 2000m;

The surrounding area was not significantly contaminated by dust, smoke, corrosive and/or flammable gases, vapors, or salt spray.

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

The amplitude of induced electromagnetic interference in the secondary system does not exceed 1.6kV.

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 test for 1 minute (wet) (dry)	kV	80/95
Lightning impulse withstand voltage (peak value)	kV	185
Rated short-circuit breaking current	kA	31.5
Rated short-circuit making current (peak value)	kA	80
Rated peak withstand current	kA	80
4S Short-Time Withstand Current	kA	31.5
Rated operating cycle		Score – 0.1s – Score – 3s – Score – 6s – Score – 60s Recover
Rated short-circuit current breaking times	次	30
Mechanical life	次	20000
Permanent magnet mechanism control voltage	V	DC220
Secondary circuit 1min power frequency withstand voltage	kV	2

Main technical parameters

Main mechanical 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	<120
Closing time	ms	25~45
Opening time	ms	20~45
Weight	Kg	295