Uninterrupted Power System is an energy conversion device that uses battery chemical energy as backup energy to continuously provide (AC) electrical energy to equipment when the mains power fails or other grid failures.
The four major functions of UPS include non-stop function, solve the problem of power outage in the grid, AC voltage stabilization function, solve the problem of severe fluctuations in the grid voltage, purification function, solve the problem of grid and power pollution, management function, and solve the problem of AC power maintenance.
The main function of UPS is to realize the isolation between the power grid and electrical appliances, realize the uninterrupted switching of two power sources, provide high-quality power, voltage conversion and frequency conversion functions, and provide backup time after a power failure.
According to different working principles, UPS is divided into: offline , online UPS. According to different power supply systems, UPS is divided into single-input single-output UPS, three-input single-output UPS, and three-input three-output UPS. According to the different output power, UPS is divided into mini type <6kVA, small type 6-20kVA, medium type 20-100KVA, and large type> 100kVA. According to different battery positions, UPS is divided into battery built-in UPS and battery external UPS. According to the different operating modes of multiple machines, UPS is divided into series hot backup UPS, alternate series hot backup UPS , and direct parallel UPS. According to the characteristics of the transformer, UPS is divided into: high frequency UPS, power frequency UPS. According to different output waveforms, UPS is divided into square wave output UPS, step wave UPS, and sine wave output UPS.
A complete UPS power supply system is composed of front-end power distribution (mains, generators, power distribution cabinets), UPS host, battery, back-end power distribution, and additional background monitoring or network monitoring software/hardware units. UPS network monitoring system = intelligent UPS + network + monitoring software. The network monitoring software includes SNMP card, monitoring station software, safety shutdown program, UPS monitoring network.
Post time: Sep-09-2021