KGZDW series charging and feeding split-screen system
Application fields
The KGZDW series of charging and feeding distribution-type DC power supply system is mainly applied in substations of 220KV and below, hydropower stations and user stations. It is suitable for use in fields such as power, transportation, power plants, communications, chemical industry, metallurgy, medical care, factories and mines, construction and fire protection, and can be used as the operating power and control power for high-voltage switches, relay protection and automatic devices.
System Composition
Charging Cabinet
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, featuring full Chinese character large-screen LCD display (optional color touch screen display), and can achieve “remote control, remote measurement, remote signaling, and remote adjustment” functions;
Voltage Reduction Device: Optional 5-level or 7-level voltage reduction device;
Cabinet Size: 800 (W) * 600 (D) * 2260 (H) mm (customizable as required).
Feeder Cabinet
Feeder Output Circuit: Can be flexibly selected according to user requirements for the brand, capacity, and quantity of circuit breakers;
Insulation Detection: Detects the insulation condition of the busbar or each output circuit;
Feeder Detection: Optional detection of the trip signals for each feeder circuit;
Cabinet Size: 800 (W) * 600 (D) * 2260 (H) mm (customizable as required).
Battery Cabinet
Battery Inspection: Optional detection of the operating data of each battery;
Battery Capacity: 220V system: 38Ah – 200Ah;
110V system: 38Ah – 200Ah;
Cabinet Size: 800 (W) * 600 (D) * 2260 (H) mm (customizable as required).
System Features
1. The monitoring system adopts a modular structure, featuring large-screen liquid crystal display, fully localized real-time display and operation, and a friendly human-machine interface;
2. It has an extremely wide voltage input range, with strong adaptability to the power grid, and can be used in environments with relatively harsh conditions;
3. The charging module employs variable-frequency natural resonance soft-switching technology, with an efficiency of ≥ 94%;
4. The system is designed in a modular manner, with reliable and secure redundant backup performance;
5. It supports on-line plug-and-play technology, making maintenance convenient and fast;
6. It has a fully automatic intelligent battery management function;
7. It has RS232/RS485 communication interfaces, facilitating communication with remote monitoring systems to achieve “four remote” functions and achieve unmanned operation;
8. It supports three communication protocols: RTU, CDT, and MODBUS.
| 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. Environmental 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 inclination: Not exceeding 5°;
7. Microcontroller noise resistance: 1000V 1μs pulse for 1 minute;
8. The equipment should work indoors and have good ventilation;
9. There should be no corrosive metals and harmful gases that damage insulation indoors;
10. There should be no strong electromagnetic field interference and severe vibration.