JPS57184980A - Detector for unbalanced current - Google Patents

Detector for unbalanced current

Info

Publication number
JPS57184980A
JPS57184980A JP7180781A JP7180781A JPS57184980A JP S57184980 A JPS57184980 A JP S57184980A JP 7180781 A JP7180781 A JP 7180781A JP 7180781 A JP7180781 A JP 7180781A JP S57184980 A JPS57184980 A JP S57184980A
Authority
JP
Japan
Prior art keywords
value
detecting
current
circuits
difference
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
JP7180781A
Other languages
English (en)
Inventor
Kazunori Yuasa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7180781A priority Critical patent/JPS57184980A/ja
Publication of JPS57184980A publication Critical patent/JPS57184980A/ja
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/16Measuring asymmetry of polyphase networks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rectifiers (AREA)
JP7180781A 1981-05-09 1981-05-09 Detector for unbalanced current Pending JPS57184980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7180781A JPS57184980A (en) 1981-05-09 1981-05-09 Detector for unbalanced current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7180781A JPS57184980A (en) 1981-05-09 1981-05-09 Detector for unbalanced current

Publications (1)

Publication Number Publication Date
JPS57184980A true JPS57184980A (en) 1982-11-13

Family

ID=13471202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7180781A Pending JPS57184980A (en) 1981-05-09 1981-05-09 Detector for unbalanced current

Country Status (1)

Country Link
JP (1) JPS57184980A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646738A1 (fr) * 1989-05-03 1990-11-09 Merlin Gerin Declencheur statique pour un disjoncteur de protection d'un reseau triphase, permettant la detection du type de defaut
CN114217112A (zh) * 2021-11-19 2022-03-22 南方电网科学研究院有限责任公司 启动电阻三相不平衡故障的检测方法、装置、设备及介质

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646738A1 (fr) * 1989-05-03 1990-11-09 Merlin Gerin Declencheur statique pour un disjoncteur de protection d'un reseau triphase, permettant la detection du type de defaut
CN114217112A (zh) * 2021-11-19 2022-03-22 南方电网科学研究院有限责任公司 启动电阻三相不平衡故障的检测方法、装置、设备及介质

Similar Documents

Publication Publication Date Title
SE8202094L (sv) Anordning for detektering av metallforemal i ett materialflode
US4556946A (en) Ground detection arrangement for A.C. generator
US4430683A (en) Ground fault detecting device for use with a DC circuit
US4530025A (en) Current ratio-differential relay
JPS57184980A (en) Detector for unbalanced current
KR890001255A (ko) 직류전원 장치
JPS57180395A (en) Voltage controller for inverter
JPS57119263A (en) Detecting method for leak in dc power source
JPS57138870A (en) Defect detector for thyristor rectifier
JPS57186982A (en) Power source circuit
JPS57135677A (en) Current type element trouble detector
SE8902350L (sv) Apparat foer att saerskilja en felaktig omkopplingsanordning fraan normala saadana
JPS55164371A (en) Alternating current voltage detecting circuit
JPS5746166A (en) Detector for unbalance of current
JPS54157221A (en) Trouble detecting circuit of current-type inverter
JPS54150655A (en) Detecting trouble of induction motor
JPS57126274A (en) Protecting system for converter
CA1230376A (en) Electrical indicating circuit for a battery charger
SU783554A1 (ru) Устройство дл контрол параметров электропечи
JPS6486071A (en) Voltage judge apparatus
JPH0228831B2 (ja) Denkiryokenshutsusochi
JPS595867B2 (ja) 交流量検出装置
GB904359A (en) Apparatus for the detection of changes occurring in electrical quantities
JPS5668276A (en) Inverter output decreasing system
JPS52128519A (en) Protection device of transformer for rectifier