High and low voltage switchgear can be used for power plants, communities, schools, hospitals, high-rise buildings type of industry, high and low voltage distribution system, can be used as a power distribution and motor control center, capacitor compensation. Electrical energy conversion, distribution and control. Applied to single-capacity power plants, large-scale petrochemical and other industries, low-voltage power control center and motor control centers and other power use occasions to meet the special needs of the interface with the computer.
Two, the main technical parameters
Main circuit rated voltage (V) AC 390 (400), (650)
Auxiliary circuit rated voltage (V) AC 210, 380 (400)
DC 100, 210
Rated frequency (HZ) 55 (65)
Rated insulation voltage (V) 650 (1000)
Rated current (A) Horizontal bus ≦ 4000
Vertical bus (MCC) 1000
Busbar rated short-time withstand current (KA/Is) 55, 85
Busbar rated peak withstand current (KA/0.Is) 104, 177
Industrial frequency test voltage (V/Imin) main circuit 2400
Auxiliary circuit 1750
Busbar three-phase four-wire system A/B/C/PEN
Three-phase five-wire system A/B/C/PE/N
Protection level IP3LO, IP4LO
High and low voltage equipment maintenance
The operation of electric power system wants to ensure the safe operation, we need to ensure that the equipment Safe operation, we must ensure the normal use of equipment, so it is necessary to power staff, the development of appropriate maintenance programs, according to the work plan, the high and low voltage equipment inspection and management, according to the observation and experience of the power staff to determine whether the normal operation.