The avr-12 type intelligent compact solid insulated switchgear is china's first-developed intelligent permanent-magnetic vacuum switchgear developed and manufactured by our company with independent intellectual property rights, which is based on the development demands of smart grid and adopts the design concept of being "intelligent, energy-saving, environmentally-friendly and maintenance-free". It integrates such functions as measurement, control, protection and communication etc, with high intelligent degree. This product is suitable for 50hz, 12kv electric power systems, extensively applied to industrial and civil cable ring networks and power supply terminal projects; it is a top choice to guarantee safe, reliable, economical and efficient operation of the power network.
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
12kv
Rated current
630/1250a
Rated frequency
50hz
Rated short-duration (1 min) power frequency withstand voltage
42kv
Rated short-circuit breaking current
20ka
Rated short-duration withstand current (4s)
20ka
Rated lightning impluse withstand voltage
75kv
Rated short-circuit making current (peak value)
50ka
Rated peak withstand current
50ka
Rated short-circuit current drop-out times
30 times
Mechanical service life of vacuum circuit breaker
10000 times
Mechanical service life of disconnectors/ground switch
2000 times
Protection degree of enclosure
Ip4x
Rated operating sequence of circuit breaker
O-0.3s-co-180s-co
Rated work power supply
Ac/dc 100/220v
Yangzhou new concept electric co., ltd. Has independently developed 72.5kv intelligent phase selection (synchronous) hv permanent-magnetic vacuum circuit breaker (hereinafter referred to as "intelligent circuit breaker") at world advanced level by integrating domestic and foreign advanced technologies, adopting the new design concept and applying hi-tech means. With permanent-magnetic mechanism, vacuum arc extinction, integrated sensor and arm+dsp processor, this intelligent circuit breaker self-adapts to own parameters and the impact of environment, thus being the first choice for the realization of power grid intelligentization.
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
72.5kv
Rated current
1600/2000/2500a
Rated frequency
50hz
Rated short-duration (1 min) power frequency withstand voltage
160kv
Rated short-circuit breaking current
31.5ka
Thermal stability current(4s)
31.5ka
Rated lightning impluse withstand voltage(to earth/break)
350kv
Dynamic stability current(peak value)
80ka
Rated short-circuit current breaking times
20 times
Operating time
40-60ms
Operating voltage
Ac/dc220v
Mechanical service life
>10000 times
Main circuit resistance