DC intellectual first counter

Characteristics: This cabinet is suitable for the places where centralized monitoring ,remote maintainance,unmanned operation is required .Can be used as the DC distribution of POP customers with less than 6000 lines or the exchange and transmission equipents of a station. Flexible transimission ports(RS232,RS485) Maximum monitorable quantity:99 sets Auto-reset DC fuses or porcelain fuses. Operating equipments are simple and reliable ,with light and sound alarm. This cabinet can be grounded well.Frame, DC power and DC power is separately grounded,all grounding insolates from others. Able to meet specification defined in YD/T939-1997. Main technical performance: Nominal input voltage:DC-40V -57V Input types: Copper bar or cable (from top or side) Capacity: -48V/400A Output type:Copper bar or cable (from top or bottom) Operation type: continuously Cooling:natural cooling Electricity resistance:AC1000V/5mA/1min Insolation resistance:≥30MΩ/500V Alarm: light and sound Ambinent temperature:5 40oC relatively humidity: ≤85%(30oC) Color:Positive red), negative (blue)