Ab-3s-72.5 Intelligent Phase Selection Synchronous Hv Permanent-Magnetic Circuit Breaker

The AB-3S-72.5 Series breakers are recently-developed pole-mounted intelligent vacuum circuit breakers of a new generation, which absorb the advanced domestic and foreign technologies adopted by our company.

Product Details Company Profile

Description

The AB-3S-72.5 Series breakers are recently-developed pole-mounted intelligent vacuum circuit breakers of a new generation, which absorb the advanced domestic and foreign technologies adopted by our company, embody the design concept of being "intelligent, energy-saving, environmentally-friendly and maintenance-free" and comply with the actual conditions of China's power distribution network and the construction requirements of smart grid. These products can be used as switches at the 10kV side of substation and 10kV outgoing line of main transformer as well as pole-mounted switches for power distribution networks. They integrate such functions as measurement, control, protection, communication, fault isolation and network reconfiguration, with high automatic and intelligent degree; they are top choices for equipment of power distribution network automation and miniaturized substations.

This product conforms to IEC60298, GB3906-2006, GB/T 11022-1999, DL/T 593-2006, GB 1984-2003 standards, etc.

Major Technical Parameters are shown below:

Rated voltage	72.5 kV
Rated current	1,600/2,000/2,500 A
Rated frequency	50 Hz
Rated short-duration (1 min) power frequency withstand voltage	160 kV
Rated short-circuit breaking current	31.5 kA
Rated short-duration withstand current (4s)	31.5 kA
Rated lightning impluse withstand voltage(to earth/break)	350 kV
Rated short-circuit making current (peak value)	80 kA
Rated short-circuit current breaking times	20 times
Operating time	40 - 60 ms
Operating voltage	AC/DC 220 V
Mechanical service life	>10,000 times
Main circuit resistance	<85 uΩ

Using Environment:

Description		Unit	Using Environment Value
Surrounding Air	Max Temperature	ºC	+50
	Min Temperature		-50
	Max Daily Temperature Difference	K	30
Altitude		m	≤2,000
Solar Radiation Intensity		W/cm2	0.1
Pullution Class			IV
Icing-Thickness		mm	10
Humidity	Average Value of Daily Relative Humidity	%	≤100
	Average Value of Monthly Relative Humidity		≤95
Earthquake Torelance Ability		Degree	≤8