DC Power Supply System

The intelligent high-frequency DC power screen for electric utilities, manufactured by Hebei Yinhua Electric Co., Ltd., is mainly applied in 35KV and below substations, switching stations, and user substations. It is suitable for configuring DC systems such as 120AH, 150AH, and 200AH, consisting of a 380V rectifier module, monitoring system, insulation monitoring unit (optional), step-down unit, AC distribution unit, DC feeder unit, and storage batteries, offering high reliability. It provides RS485 and RS232 communication interface options and CDT and MODBUS communication protocol options, fulfilling the "four remote" functions of the DC power supply system and enabling unattended operation of substations.

AC input voltage: AC 380V±15%, 50HZ.
Three-phase four-wire system, dual power input; DC output voltage: DC220V, DC110V. Output current: control bus (KM) 0-50A,
closing bus (HM) 0-200A;
Battery capacity: lead-acid maintenance-free battery 120AH-200AH
Voltage regulation accuracy: ≤±0.5%;
Current regulation accuracy: ≤±0.5%;
Ripple coefficient: ≤±0.1%;
System efficiency: ≥95%;
Power factor: ≥0.93;
Operating noise: ≤50dB;
Grounding resistance: <0.1Ω
Battery inspection count: optional;
Average continuous operation time: >40000H;
Insulation branch count: optional;
Output circuits: control bus (KM) 10 circuits, closing bus (HM) 10 circuits. Screen structure: PK structure with front glass door. Protection level: IP30-IP41
Dimensions: 800x600x2360(mm)
800x600x2260(mm)