Function and principle of power APC Schneider UPS

In the power system, DCS (distributed control system), monitoring system, automation instrument, dispatching communication system, microcomputer system and other core equipment have very high requirements for power supply quality and reliability. They need special APC Schneider UPS power supply. Most of these loads are single-phase loads.

In the power system, DCS (distributed control system), monitoring system, automation instrument, dispatching communication system, microcomputer system and other core equipment have very high requirements for power supply quality and reliability. They need special APC Schneider UPS power supply. Most of these loads are single-phase loads.

Power APC Schneider UPS power supply system is generally composed of three parts: power ups host, bypass voltage regulator cabinet, output feeder cabinet (three in one can also be used for small power).

1. Main cabinet of power APC Schneider UPS: input and output isolation transformer, rectifier, inverter, static bypass switch, bypass switch, check diode;

2. Bypass isolation and voltage stabilization cabinet: bypass isolation transformer, bypass regulator, manual / bypass maintenance switch;

3. Feeder cabinet: loop distribution unit, monitoring instrument, control switch, signal indication, etc;

When the mains supply is normal, the alternating current is isolated, rectified and filtered, and then the stable alternating current power supply is provided to the load through the inverter; if the alternating current input is abnormal or the power is cut off, the direct current is supplied by the DC screen through the check diode, and then the inverter is output to the load. When the DC panel is under voltage or powered off, it is statically opened and switched to the AC bypass power supply.