It's applied in AC 50Hz, rated voltage 40.5KV indoor power distribution system. With power station, substation, and industrial &mining company receiving and distributing power function, it controls, protects and monitors circuit, and also used in frequent operated places.
It's of assembled structure; Circuit breaker is of handcart floor standing structure.
It's equipped with new compound insulating vacuum circuit breaker, with easy interchange features.
There is leading screw pushing mechanism in handcart rack, easily to move handcart and avoid malfunction which'll damage the pushing system.
All operation is carried when cabinet door is closed.
Interlock of main switch, handcart and cabinet door is compulsory mechanical blocking way.
Cable compartment is with abundant space which can connect with several cables; Fast connect grounding switch for grounding and loop.
Shell protection grade is IP3X, protection grade is IP2X when handcart door under open state.3.Technical Data
|3.2||Rated current of circuit breaker||A||630,1250,1600,2000,2500,3150,4000,5000|
|Rated current of switchgear||A||630,1250,1600,2000,2500,3150,4000,5000|
|Rated short-circuit breaking current||kA||16,20,25,31.5,40,50|
|Rated short-time withstand current||kA||16,20,25,31.5,40,50|
|Rated short circuit continuous time||s||4|
|3.5||Rated peak withstand current||kA||40,50,63,80,100,125|
|Rated short-circuit closing current(peak)||kA||40,50,63,80,100,125|
|3.6||Rated insulation level: 1min power frequency withstand voltage||kV||24,32,42 between poles, pole to earth|
|kV||24,32,48 between open contacts|
|3.7||Rated insulation level: Lighting impulse withstand voltage(peak)||kV||40,60,75 between poles, pole to earth|
|kV||46,70,85 between open contacts|
|3.8||Rated power frequency withstand voltage||kV||95/1min|
|3.9||Protection level||Switchgear shell|| ||IP3X|
|Compartments(door opened)|| ||IP2X when the CPT and CB doors are open.|