KGZDW series small integrated cabinet-type DC power supply system
Application fields
The KGZDW series of small integrated cabinet-type DC power supply systems are mainly applied in 10KV small substations and user stations. They are suitable for use in the fields and user terminals of power, transportation, power plants, communications, chemical industry, metallurgy, medical care, factories and mines, construction, and fire protection, and can be used as the operating and control power supplies for high-voltage switches, relay protection, and automatic devices.
System Composition
Overall Design: Integrates AC power distribution, charging, power supply and battery management;
AC Power Distribution: Two three-phase four-wire circuits, capable of automatic switching as mutual backups;
Monitoring System: Automatically manages the charging and discharging functions of the batteries, with full Chinese character large-screen LCD display, and can achieve “remote control, remote measurement, remote signaling, and remote adjustment” functions;
Feeder Circuit: Can be configured with 20 10A-40A circuit breakers;
Insulation Detection: Detects the insulation condition of the busbar (optional for branch insulation detection);
Voltage Reduction Device: Optional 5-level or 7-level voltage reduction device;
Feeder Detection: Optional for detecting the trip signals of each feeder circuit;
Battery Inspection: Optional for detecting the operating data of each battery;
Cabinet Size: 800 (W) * 600 (D) * 2260 (H) mm (customizable as required).
System Features
1. Compact system structure with low space occupation, suitable for use in small substations and user stations;
2. Wide voltage input range, strong adaptability to the power grid, can be used in relatively harsh environments;
3. The charging module adopts variable frequency natural resonance soft-switching technology, with an efficiency of ≥ 94%;
4. The system adopts modular design, with reliable and secure redundant backup performance;
5. Online plug-and-play technology, convenient and fast maintenance;
6. Fully automatic intelligent battery management function;
7. RS232/RS485 communication interface, facilitating communication with remote monitoring systems to achieve “four remote” functions and achieve unmanned operation;
8. Supports RTU, CDT, and MODBUS communication protocols.
Project Name | Technical parameters |
Rated input voltage | 380VAC±20% |
Power grid frequency | 50Hz±10% |
Power factor | ≥0.95%(full-load output) |
Rated output voltage | 220VDC、110VDC |
Rated output current | 10～400A |
Voltage stabilization accuracy | ≤±0.5% |
Steady current accuracy | ≤±0.5% |
Ripple coefficient | ≤±0.1% |
Audible noise | ≤50dB |
Cooling method | Intelligent temperature-controlled air cooling and natural cooling |
Working mode | Continuous long-term operation |
Insulation strength | No flashover or breakdown within one minute at a voltage of over 10MΩ and 2kVAC |
Battery capacity | 7Ah、10Ah、12Ah、20Ah、24Ah、38Ah、50Ah、65Ah、80Ah、90Ah、100Ah、120Ah、150Ah、200Ah |
Operating Environment
1. Ambient Temperature: -10℃ to +50℃;
2. Relative Humidity: ≤ 95% (20±5℃);
3. Altitude: ≤ 3000m;
4. Dust: ≤ 5mg/m3;
5. Earthquake Intensity: Not exceeding 8 degrees;
6. Installation Vertical Tilt: Not exceeding 5°;
7. Microcontroller Anti-Noise: 1000V 1μs pulse for 1 minute;
8. The equipment should operate indoors and have good ventilation;
9. There should be no corrosive metals and harmful gases that damage insulation indoors;
10. No strong electromagnetic field interference and severe vibration.