JPS52147748A - Phaseless voltage detector - Google Patents

Phaseless voltage detector

Info

Publication number
JPS52147748A
JPS52147748A JP6496176A JP6496176A JPS52147748A JP S52147748 A JPS52147748 A JP S52147748A JP 6496176 A JP6496176 A JP 6496176A JP 6496176 A JP6496176 A JP 6496176A JP S52147748 A JPS52147748 A JP S52147748A
Authority
JP
Japan
Prior art keywords
phaseless
voltage detector
phase
phaselessness
existence
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
JP6496176A
Other languages
Japanese (ja)
Inventor
Kenji Kuwajima
Tatsumi Kobayashi
Sachikuni Matsuda
Shigeo Takayama
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.)
YAMAKI DENKI KK
YAMAKI ELECTRIC
Nippon Telegraph and Telephone Corp
Original Assignee
YAMAKI DENKI KK
YAMAKI ELECTRIC
Nippon Telegraph and Telephone Corp
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 YAMAKI DENKI KK, YAMAKI ELECTRIC, Nippon Telegraph and Telephone Corp filed Critical YAMAKI DENKI KK
Priority to JP6496176A priority Critical patent/JPS52147748A/en
Publication of JPS52147748A publication Critical patent/JPS52147748A/en
Pending legal-status Critical Current

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  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To detect the existence of phaselessness without being influenced by waveform distortion by connecting an effective value rectification circuit between the phase of a multi phase power supply to detect the inter-phase effective voltage and discriminating the existence of the phaselessness in accordance with its voltage by a compare detection circuit.
COPYRIGHT: (C)1977,JPO&Japio
JP6496176A 1976-06-03 1976-06-03 Phaseless voltage detector Pending JPS52147748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6496176A JPS52147748A (en) 1976-06-03 1976-06-03 Phaseless voltage detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6496176A JPS52147748A (en) 1976-06-03 1976-06-03 Phaseless voltage detector

Publications (1)

Publication Number Publication Date
JPS52147748A true JPS52147748A (en) 1977-12-08

Family

ID=13273137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6496176A Pending JPS52147748A (en) 1976-06-03 1976-06-03 Phaseless voltage detector

Country Status (1)

Country Link
JP (1) JPS52147748A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54164242A (en) * 1978-03-13 1979-12-27 Cutler Hammer World Trade Inc Phase balance monitoring system
JPS56112815A (en) * 1980-02-12 1981-09-05 Miwa Electric 33phase circuit line voltage and difference voltage detecting circuit
JPS56117531A (en) * 1980-02-19 1981-09-16 Kazutoshi Nakao Lack phase monitor and warning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54164242A (en) * 1978-03-13 1979-12-27 Cutler Hammer World Trade Inc Phase balance monitoring system
JPS56112815A (en) * 1980-02-12 1981-09-05 Miwa Electric 33phase circuit line voltage and difference voltage detecting circuit
JPS56117531A (en) * 1980-02-19 1981-09-16 Kazutoshi Nakao Lack phase monitor and warning device

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