JPS5238269A - Zero phase voltage detection system - Google Patents

Zero phase voltage detection system

Info

Publication number
JPS5238269A
JPS5238269A JP50113663A JP11366375A JPS5238269A JP S5238269 A JPS5238269 A JP S5238269A JP 50113663 A JP50113663 A JP 50113663A JP 11366375 A JP11366375 A JP 11366375A JP S5238269 A JPS5238269 A JP S5238269A
Authority
JP
Japan
Prior art keywords
detection system
voltage detection
phase voltage
zero phase
relay
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
JP50113663A
Other languages
Japanese (ja)
Inventor
Hideomi Otsuji
Makoto Nukiyama
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 JP50113663A priority Critical patent/JPS5238269A/en
Publication of JPS5238269A publication Critical patent/JPS5238269A/en
Priority to JP1979174858U priority patent/JPS55161280U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE: To provide a filter between the open delta winding of a grounding transformer and a current limiting resistor, therby increasing the detection sensitivity of a ground-fault relay and making possible the reduction in size of the relay.
COPYRIGHT: (C)1977,JPO&Japio
JP50113663A 1975-09-22 1975-09-22 Zero phase voltage detection system Pending JPS5238269A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP50113663A JPS5238269A (en) 1975-09-22 1975-09-22 Zero phase voltage detection system
JP1979174858U JPS55161280U (en) 1975-09-22 1979-12-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50113663A JPS5238269A (en) 1975-09-22 1975-09-22 Zero phase voltage detection system

Publications (1)

Publication Number Publication Date
JPS5238269A true JPS5238269A (en) 1977-03-24

Family

ID=14617990

Family Applications (2)

Application Number Title Priority Date Filing Date
JP50113663A Pending JPS5238269A (en) 1975-09-22 1975-09-22 Zero phase voltage detection system
JP1979174858U Pending JPS55161280U (en) 1975-09-22 1979-12-19

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP1979174858U Pending JPS55161280U (en) 1975-09-22 1979-12-19

Country Status (1)

Country Link
JP (2) JPS5238269A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0546633U (en) * 1991-12-02 1993-06-22 満義 兼子 Auxiliary brake device for automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0546633U (en) * 1991-12-02 1993-06-22 満義 兼子 Auxiliary brake device for automobile

Also Published As

Publication number Publication date
JPS55161280U (en) 1980-11-19

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