JPS59114736U

JPS59114736U - Protection device for uninterruptible power supply equipment

Info

Publication number: JPS59114736U
Application number: JP562583U
Authority: JP
Inventors: 大隅　峰雄
Original assignee: 株式会社明電舎
Priority date: 1983-01-19
Filing date: 1983-01-19
Publication date: 1984-08-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来使用の無停電電源システムの概略的構成を
示すブロック図、第２図は第１図の回路における受電電
圧波形と直流サイリスクスイッチ　　５作動の説明用図
、第３図、第５図は従来の直流サイリスクスイッチの保
護装置のブロック図、第４図、第６図は夫々第３図、第
５図に示された装置の動作説明用図、第７図は本考案に
係る実施例の要部を示すブロック図である。１・・・商用電源、３・・・順変換装置、４・・・逆変
換装置、７・・・出力マグネット・サーキットブレーカ
、８・・・負荷、９・・・バッテリ、１０・・・直流用
マグネット・サーキットブレーカ、１２・・・直流サイ
リスクスイッチ、１３・・・トランス、１４・・・制御
回路、４０・・・ホール素子を使用した変流器、４１・
・・検出回路、４２・・・正方向過電流設定器、４５・
・・逆方向過電流設定器、４３．４６・・・コンパレー
タ、４４・・−ＯＲ回路、４７・・・モノマルチ。第２図第３図Fig. 1 is a block diagram showing the schematic configuration of a conventional uninterruptible power supply system, Fig. 2 is an explanatory diagram of the receiving voltage waveform and the operation of the DC si-risk switch 5 in the circuit of Fig. 1, Fig. 3, Fig. 5 is a block diagram of a conventional protection device for a DC thyrisk switch, Figs. 4 and 6 are diagrams for explaining the operation of the devices shown in Figs. FIG. 2 is a block diagram showing the main parts of such an embodiment. DESCRIPTION OF SYMBOLS 1...Commercial power supply, 3...Forward conversion device, 4...Inverse conversion device, 7...Output magnet circuit breaker, 8...Load, 9...Battery, 10...DC 12... DC thyrisk switch, 13... Transformer, 14... Control circuit, 40... Current transformer using Hall element, 41...
...detection circuit, 42...positive direction overcurrent setting device, 45.
... Reverse overcurrent setting device, 43.46... Comparator, 44...-OR circuit, 47... Mono multi. Figure 2 Figure 3

Claims

[Scope of utility model registration request]

In an uninterruptible power source system that forward-reverse converts a commercial power source and supplies power to a load, and also switches to a battery and supplies power to the load when a power outage occurs, there is a A DC thyrisk switch is provided, and this DC thyrisk switch is turned on when a power outage occurs, and a current transformer using a Hall element is provided in the current path flowing out from the battery, and the DC electromotive force of the current transformer is set to an allowable value. 1. A protection device for an uninterruptible power supply device, characterized in that when the voltage exceeds the current limit, the output of a current transformer turns off a DC breaker provided in the current path.