Detailed Product Description

GCK series low pressure shaft cabinet model switchbox are used for electric motor
control central, power distributing centre. They are applied to power stations,
electric substations, buildings, edifices, airports, hospitals, industrial and
mining establishments as three-phase 50Hz, voltage 380V and as follow electric system
suited for the electricity, the feed, the illumination,the motor control and
the power compensates. It conforms with the GB7251-97,ZBK36001-89 and IBC439-1
standards

Technical parameters:
1) Main circuit nominal insulation voltage: 660V
2) Main circuit nominal voltage: AC 380V
3) Auxiliary circuit nominal voltage: AC 220V, 380V, 110V
4) Rated frequency: 50 / 60Hz
5) Rated current:
    a) Level bus:<=3,200A
    b) Vertical bus: 1,600A
6) Nominal short time withstand current (IS): 50kA, 80kA
7) Nominal peak reliability current: 105kA, 176kA
8) Power frequency test voltage:
    a) Main circuit: 2,500V/min
    b) Auxiliary circuit: 1,760V/min
9) Peeling levels of protection: IP3LO, IP4LO
10) Protection:
      a) In circuit design, operating power source adopted electric move measure
          (with isolation transformer)
      b) In mechanism design, we set much value on design between cabinet and
          insulating; it up to IP40 standards provided by IEC529 and GB4208 and
          gives a guarantee for personal security of fixing, mending and operator