JPH04368436A - Protective circuit for uninterruptible power supply system - Google Patents

Protective circuit for uninterruptible power supply system

Info

Publication number
JPH04368436A
JPH04368436A JP3142180A JP14218091A JPH04368436A JP H04368436 A JPH04368436 A JP H04368436A JP 3142180 A JP3142180 A JP 3142180A JP 14218091 A JP14218091 A JP 14218091A JP H04368436 A JPH04368436 A JP H04368436A
Authority
JP
Japan
Prior art keywords
uninterruptible power
short
currents
power equipment
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3142180A
Other languages
Japanese (ja)
Inventor
Hidenori Okubo
Seiji Sadayoshi
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP3142180A priority Critical patent/JPH04368436A/en
Publication of JPH04368436A publication Critical patent/JPH04368436A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the effect of an accident on a sound machine by inserting a diode polarity blocking currents in the direction of a common battery from a DC intermediate circuit.
CONSTITUTION: When a smoothing capacitor 14 is short-circuited, short circuit currents are made to flow through a short-circuit point from a common battery 2, the short circuit currents are detected by a first current detector 18, and a battery breaker 17 is tripped. A first unintrruptible power equipment 30 is detached from a sound second uninterruptible power equipment 40 and the common battery 2. The voltage of the common battery 2 drops during a time when the short circuit currents are made to flow, but a reverse blocking diode 41 obstructs the flowing of currents through the short-circuit point from the second uninterruptible power equipment 40. Accordingly, the effect of an accident on the sound uninterruptible power equipment can be prevented.
COPYRIGHT: (C)1992,JPO&Japio
JP3142180A 1991-06-14 1991-06-14 Protective circuit for uninterruptible power supply system Pending JPH04368436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3142180A JPH04368436A (en) 1991-06-14 1991-06-14 Protective circuit for uninterruptible power supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3142180A JPH04368436A (en) 1991-06-14 1991-06-14 Protective circuit for uninterruptible power supply system

Publications (1)

Publication Number Publication Date
JPH04368436A true JPH04368436A (en) 1992-12-21

Family

ID=15309236

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3142180A Pending JPH04368436A (en) 1991-06-14 1991-06-14 Protective circuit for uninterruptible power supply system

Country Status (1)

Country Link
JP (1) JPH04368436A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2736766A1 (en) * 1995-06-09 1997-01-17 Mitsubishi Electric Corp Rectifier control system with multiple rectifiers for supplying DC voltage to inverter
JP2013247819A (en) * 2012-05-29 2013-12-09 Mitsubishi Electric Corp Uninterruptible power supply device for device of driving nuclear reactor control bar
WO2014003738A1 (en) * 2012-06-27 2014-01-03 Hewlett-Packard Development Company, L.P. Battery to provide voltage to power modules

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2736766A1 (en) * 1995-06-09 1997-01-17 Mitsubishi Electric Corp Rectifier control system with multiple rectifiers for supplying DC voltage to inverter
US5796601A (en) * 1995-06-09 1998-08-18 Mitsubishi Denki Kabushiki Kaisha Rectifier control system
JP2013247819A (en) * 2012-05-29 2013-12-09 Mitsubishi Electric Corp Uninterruptible power supply device for device of driving nuclear reactor control bar
WO2014003738A1 (en) * 2012-06-27 2014-01-03 Hewlett-Packard Development Company, L.P. Battery to provide voltage to power modules
CN104380566A (en) * 2012-06-27 2015-02-25 惠普发展公司,有限责任合伙企业 Battery to provide voltage to power modules

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