JPH02125557U

JPH02125557U -

Info

Publication number: JPH02125557U
Application number: JP76089U
Authority: JP
Priority date: 1989-01-07
Filing date: 1989-01-07
Publication date: 1990-10-16

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による無停電電源
装置の構成図、第２図は従来の無停電電源装置の
構成図。図において、１は交流電源、２は整流器、３は
インバータ、４は負荷、５は充電器、６はバツテ
リ、７はダイオード、８，９は過電圧検出器であ
る。なお、図中、同一符号は同一、または相当部
分を示す。 FIG. 1 is a block diagram of an uninterruptible power supply according to an embodiment of this invention, and FIG. 2 is a block diagram of a conventional uninterruptible power supply. In the figure, 1 is an AC power supply, 2 is a rectifier, 3 is an inverter, 4 is a load, 5 is a charger, 6 is a battery, 7 is a diode, and 8 and 9 are overvoltage detectors. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Claim for Utility Model Registration] A rectifier that converts alternating current into direct current, an inverter that converts the direct current output of the rectifier into alternating current and supplies it to a load, a battery for a hot-up power source, and a charger that charges the battery, It consists of a rectifying element installed between the battery output and the DC output of the rectifier in order to supply the output of the battery, and normally the rectifier output voltage is higher than the battery voltage and supplied to the inverter to prevent AC input power outage. In an uninterruptible power supply that sometimes supplies energy from a battery to an inverter through the rectifying element, first overvoltage protection means stops the inverter and the rectifier due to an input overvoltage of the inverter, and an output overvoltage of the charger prevents this charging. second overvoltage protection means for stopping the device, and a voltage setting value of the first overvoltage protection means is set higher than a voltage setting value of the second overvoltage protection means. .