JPS5415148A - Differential protective realy - Google Patents

Differential protective realy

Info

Publication number
JPS5415148A
JPS5415148A JP8063377A JP8063377A JPS5415148A JP S5415148 A JPS5415148 A JP S5415148A JP 8063377 A JP8063377 A JP 8063377A JP 8063377 A JP8063377 A JP 8063377A JP S5415148 A JPS5415148 A JP S5415148A
Authority
JP
Japan
Prior art keywords
realy
phase
differential protective
collectively
ground
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
JP8063377A
Other languages
Japanese (ja)
Inventor
Yoichi Sasaya
Minoru Hatada
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 JP8063377A priority Critical patent/JPS5415148A/en
Publication of JPS5415148A publication Critical patent/JPS5415148A/en
Pending legal-status Critical Current

Links

Landscapes

  • Protection Of Generators And Motors (AREA)

Abstract

PURPOSE: To collectively protect three-phase component by setting up a ground circuit to collectively ground the single coil of each phase when the three-phase electric machinery and apparatus having n parallel coils in each phase is protected.
COPYRIGHT: (C)1979,JPO&Japio
JP8063377A 1977-07-05 1977-07-05 Differential protective realy Pending JPS5415148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8063377A JPS5415148A (en) 1977-07-05 1977-07-05 Differential protective realy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8063377A JPS5415148A (en) 1977-07-05 1977-07-05 Differential protective realy

Publications (1)

Publication Number Publication Date
JPS5415148A true JPS5415148A (en) 1979-02-03

Family

ID=13723757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8063377A Pending JPS5415148A (en) 1977-07-05 1977-07-05 Differential protective realy

Country Status (1)

Country Link
JP (1) JPS5415148A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57211458A (en) * 1981-06-08 1982-12-25 Fanuc Ltd Copying controlling system
JPS59175926A (en) * 1983-03-28 1984-10-05 Fanuc Ltd Tension commanding system in wire-cut electric discharge machine
JPS60263641A (en) * 1984-06-07 1985-12-27 Ando Electric Co Ltd Cutting device setable of cutting conditions
JPH0236050A (en) * 1988-07-26 1990-02-06 Toshiba Mach Co Ltd Correction method for displacement of structure and device therefor
JPH0241848A (en) * 1988-08-03 1990-02-13 Hitachi Seiki Co Ltd Correcting method for thermal displacement of machine tool
JP2012189403A (en) * 2011-03-10 2012-10-04 Hitachi Mitsubishi Hydro Corp Revolving electrical machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57211458A (en) * 1981-06-08 1982-12-25 Fanuc Ltd Copying controlling system
JPH0138623B2 (en) * 1981-06-08 1989-08-15 Fanuc Ltd
JPS59175926A (en) * 1983-03-28 1984-10-05 Fanuc Ltd Tension commanding system in wire-cut electric discharge machine
JPS60263641A (en) * 1984-06-07 1985-12-27 Ando Electric Co Ltd Cutting device setable of cutting conditions
JPH0236050A (en) * 1988-07-26 1990-02-06 Toshiba Mach Co Ltd Correction method for displacement of structure and device therefor
JPH0241848A (en) * 1988-08-03 1990-02-13 Hitachi Seiki Co Ltd Correcting method for thermal displacement of machine tool
JP2012189403A (en) * 2011-03-10 2012-10-04 Hitachi Mitsubishi Hydro Corp Revolving electrical machine

Similar Documents

Publication Publication Date Title
AU512126B2 (en) Ground fault protective apparatus of field windings
GB2019677A (en) People protecting ground fault circuit breaker utilizing wveform characteristics
JPS5415148A (en) Differential protective realy
JPS5425446A (en) Blushless exciter protective device
JPS5286134A (en) Overload protector for motor
JPS548847A (en) Surge protection circuit
JPS5380546A (en) Over current relay
JPS5286133A (en) Over overvoltage protector
JPS5223616A (en) Protector
JPS5430545A (en) Induction heating device
JPS5321733A (en) Protective device for inverter
JPS5320782A (en) Hall element
JPS52120353A (en) Protective device for dc power transmission system
JPS53111448A (en) Protective equipment for cyclo-converter
JPS5219216A (en) Overcurrent limiting circuit
JPS5222739A (en) Protection gap device
JPS526062A (en) Protection device for high frequency electric power amplifier
JPS5566238A (en) Magnet type ac generator overvoltage preventing circuit
JPS5253245A (en) Protective method of gis
JPS5310841A (en) Ground-fault detector
JPS53109148A (en) Digital protective relay
JPS53147937A (en) Duct line type electric apparatus
JPS53117313A (en) Surge protective system
JPS52135033A (en) Generator protective device
JPS51119944A (en) Field ground-fault protect relay