ghk low voltage power distribution cabinet is fixed separated the company according to abb company recently launched new products, based on the artu distribution control cabinet, combined with the actual situation, in the reserved appearance unchanged for the larger improvement on the internal strength of the entire cabinet, which has greatly improved. in the vertical bus, we selected the domestic general rectangular busbar connection. in the manufacturing process, to meet the requirements of all aspects of the customer. the ghk cabinet can provide complete solutions for the power distribution cabinet structure control system, coupled with the standard and general system and high degree of attachment, can fully meet the requirements of various types of market applications.
equipment technical performance
ghk low voltage fixed separation power distribution cabinet, its specific technical parameters can be achieved as follows：
——rated insulation voltage of main circuit1000v
——rated operating voltage of main circuit690v
——rated impulse withstand voltageuimp8kv
——rated frequency60-60hz
——rated operating current of busbar
horizontal bus (bus)：4000a
vertical busbar (branch)：2500a
——（1s）rated short-time withstand current (1s)
horizontal bus (bus)：80ka
vertical busbar (branch)：80ka
——rated peak withstand current level of bus (bus)：176ka
vertical busbar (branch)：176ka
——shell protection class ip40/ip55
use environment：
ambient temperature: the maximum temperature of +40℃ , the minimum temperature of -15℃
the maximum daily average temperature is not more than +35℃
relative humidity: daily average relative humidity is less than 95%
the monthly mean relative humidity is less than 90%
altitude: not more than 1000 meters
earthquake intensity: no more than 7 degrees
equipment manufacturing standards
"low voltage switchgear and control equipment"
"low voltage switchgear equipment"
iec947standard
outline dimension
(1)outline dimension
high 223mm
width 720mm 920mm 1120mm
depth 635mm 835mm 1035mm
(2) the structure ghk low voltage fixed separation power distribution cabinet according to the rated voltage 690v design, its design and the structure conforms to the iec439-1 and the gb7251.1 standard. the basic structure of the cabinet comprises a special section assembly, special section is formed by m=2500mm module mounting hole by aluminum zinc coated steel plate by special bending die. all the frames and the inner clapboard adopts aluminum zinc coated steel plate, door and side around the paint coating process. the device according to the fixed separation of three rooms, the main bus room, electrical room and cable room.
(3) metal grounding protection: ghk low voltage power distribution cabinet fixed separation, cross protection in the whole length of the cabinet arrangement (pe) line, each part of the metal cabinet and pe line has good conductivity, pe installed in the bottom line, grounding protection type tn-s system.
power line of switch cabinet：
(1) the inlet and outlet of the cabinet: to meet the requirements of the closed bus, the next line, bus and cable on or off the line, can guarantee the terminal bus bridge and the transformer connection.
(2) protective grounding: exposed conductors, such as the bottom plate, frame and metal casing of the switch cabinet, are interconnected and connected to the protective earth terminal on the electrical connections and are connected to a ground electrode or an external protective conductor. bus connection between the guarantee that there is sufficient and lasting contact pressure, but will not cause permanent deformation of the bus. in addition to the current, the internal bus bar and the section area of the switch cabinet must bear the load current, the mechanical stress, the method of laying, the insulation type and the type of the connected components are also considered. the insulated conductors are in conformity with the rated insulation voltage of the corresponding circuits.
