1. The traditional phase control has been replaced by advanced high frequency switches.
2. The design of the system has evolved from fixed to modular to meet the needs of various levels and scales of communication equipment.
The AC power distribution unit, DC power distribution unit and battery power distribution unit of the high-frequency rectifier system can be independent screens (cabinet), combined with rack-mounted panels, or independent modules, installed in rack-mounted . It can form a large system above 5000A, or a small system of tens of amperes or even smaller. The communication power supply can be installed in an independent computer room, or in a communication equipment room, or even directly in a high-frequency rectifier communication equipment rack. Coupled with the wide application of valve-regulated sealed lead-acid batteries, it creates conditions for decentralized power supply. Thereby greatly improving the reliability and communication quality of the communication network operation.
3. The high-frequency rectifier adopts modular design, N+1 configuration and hot-swappable technology, which facilitates the expansion of the system and facilitates the maintenance of the equipment. 4. The system is generally equipped with lightning protection and surge suppression, which effectively prevents lightning impulses and voltage mutations, spike interference, and turn-on and turn-off surges, and improves the safety and power supply quality of the power supply system.
5. The intelligent design of the power supply equipment and the setting of the communication interface make the centralized monitoring of the power supply system possible.
As the power distribution equipment is equipped with a microcomputer monitor, the system has intelligent management functions, fault alarms and self-protection functions. For example, automatic management of battery pack initial charge, equalization/floating charge, under-voltage separation and temperature compensation, etc.; implementation of input/output over (under) voltage, output over current, and output shunt switches for high-frequency rectifier systems Status, lightning protection and surge suppression failure fault alarms, etc. Through the RS-232 and RS-485/422 communication interfaces of the power supply equipment, with the support of the communication protocol, external communication can be easily implemented, and remote signaling, remote measurement, remote control and remote adjustment of the system can be implemented.
6. The application of new devices, new materials and new technologies has brought high-frequency switching rectifiers to a new level.