Product Overview:
According to the development demand of Chinese electric power, the power supply products specially designed for power plants, substations and distribution have double conversion on-line and zero conversion functions. Mainly used for power telemetry, RTU, power carrier, power monitoring and so on. When the mains is normal, the single-phase 220V (or three-phase 380V) is isolated and filtered through the inverter to provide stable power supply to the load. If the INPUT of AC power grid is abnormal or power is cut off, the backup DC panel of power system will be powered by reverse diode inverter. When dc panel undervoltage or power, static switch to bypass power supply; When the mains returns to normal, it automatically switches to the mains inverter. If the inverter is overloaded or faulty, it switches to bypass mode and sends a warning signal. Widely used in power plants, substations, distribution stations, etc.

Product technical parameters

Product performance:
Special UPS, DBW bypass regulator cabinet and PD series feeder cabinet are power supply products specially designed by Shenzhen Shande Power Supply Company for power plant, substation and distribution according to the development demand of China's electric power. They have double conversion on-line type and zero conversion function. Mainly used for power telemetry, RTU, power carrier, power monitoring and so on. When the mains is normal, the single-phase 220V (or three-phase 380V) is isolated and filtered through the inverter to provide stable power supply to the load. If the INPUT of AC power grid is abnormal or power is cut off, the backup DC panel of power system will be powered by reverse diode inverter. When dc panel undervoltage or power, static switch to bypass power supply; When the mains returns to normal, it automatically switches to the mains inverter. If the inverter is overloaded or faulty, it switches to bypass mode and sends a warning signal.

Applicable place:
Power plants, substations, distribution stations, etc.

Main performance features:

1. Adopt full digital control technology
2. Intelligent detection and monitoring function
3. Digital control static switch zero switching
4. The fifth generation low voltage drop IGBT drives the inverter
5. Passive contact and RS232/485 monitoring
6. Input&output fully isolation
7. Complete isolation of DC panel from mains
8. Adopt power standard screen cabinet design
9. With over voltage, under voltage, over current, short circuit and other protection functions
10. Large LCD Monitor interface in English and Chinese
11. Intuitive mechanical head indication
12. There are 256 ultra-long event records, which helps you analyze and manage the power supply status.
13. Commutator:The single-phase/three-phase AC mains supply is sent to the input of the rectifier through a matching isolation transformer. When the mains voltage is ±10% and the load is 100%, the output DC voltage of the rectifier is stable within ±1%.
14. Inverter:By adopting SPWN technology and converting dc voltage into standard sinusoidal AC voltage through IGBT module inverter, the distortion can be reduced to the greatest extent and the volume of filter can be reduced. This results in excellent dynamic performance when the load changes.
15. direct current cabinet:When the mains is under voltage or faulty, the DC screen connected with the DC terminal will automatically supply power without interruption. The DC panel gives a signal when it discharges. If the discharge reaches the limit voltage, the system will be switched to standby. The system will give a warning signal when it approaches the termination discharge voltage.
16. Mains/backup power:When the dual-channel AC model is used (the mains is the main power supply, and the other group is the standby power supply), the backup power supply is switched to when the mains is abnormal or faulty. Only when both AC inputs are faulty, the dc panel power supply is enabled.
17. static switch:The static switch enables uninterrupted bypass and inverter switching, which can be completed automatically or manually.
18. intelligent monitoring:Through RS232/RS485, passive contact, and power transmission signal, the UPS working status and data are transmitted to DCS in real time to achieve intelligent monitoring