JPS5469746A - Power source equipment - Google Patents

Power source equipment

Info

Publication number
JPS5469746A
JPS5469746A JP13670377A JP13670377A JPS5469746A JP S5469746 A JPS5469746 A JP S5469746A JP 13670377 A JP13670377 A JP 13670377A JP 13670377 A JP13670377 A JP 13670377A JP S5469746 A JPS5469746 A JP S5469746A
Authority
JP
Japan
Prior art keywords
switch
fault
circuits
acsw2
acsw1
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
JP13670377A
Other languages
Japanese (ja)
Inventor
Hideaki Kunisada
Yasuhiro Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13670377A priority Critical patent/JPS5469746A/en
Publication of JPS5469746A publication Critical patent/JPS5469746A/en
Pending legal-status Critical Current

Links

Landscapes

  • Supply And Distribution Of Alternating Current (AREA)

Abstract

PURPOSE: To improve the reliability by providing a circuit for deciding the fault of switch from the signal indicating the operational state of switch and the signal indicating that the current flowing through the switch exceeds over predetermined level.
CONSTITUTION: In order to detect the fault of AC switches ACSW1, ACSW2 in power source equipment where two inverters INV1 and INV2 are operated in paralll through AC switches ACSW1 and ACSW2, under current detecting circuits 10, 20, circuits 11, 21 for detecting the state whether AC switches ACSW1 and ACSW2 are functioning or not, and the circuits 13, 14 for deciding whether AC switch is in fault or not from said two signals are provided. Consequently from the conditions that the load current flowing through AC switch is below predetermined level and that AC switch is functioning, fault decision circuits 13, 14 can produce fault signals d, d'.
COPYRIGHT: (C)1979,JPO&Japio
JP13670377A 1977-11-16 1977-11-16 Power source equipment Pending JPS5469746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13670377A JPS5469746A (en) 1977-11-16 1977-11-16 Power source equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13670377A JPS5469746A (en) 1977-11-16 1977-11-16 Power source equipment

Publications (1)

Publication Number Publication Date
JPS5469746A true JPS5469746A (en) 1979-06-05

Family

ID=15181498

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13670377A Pending JPS5469746A (en) 1977-11-16 1977-11-16 Power source equipment

Country Status (1)

Country Link
JP (1) JPS5469746A (en)

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