JPS5229935A - Switching apparatus - Google Patents

Switching apparatus

Info

Publication number
JPS5229935A
JPS5229935A JP10620175A JP10620175A JPS5229935A JP S5229935 A JPS5229935 A JP S5229935A JP 10620175 A JP10620175 A JP 10620175A JP 10620175 A JP10620175 A JP 10620175A JP S5229935 A JPS5229935 A JP S5229935A
Authority
JP
Japan
Prior art keywords
grounding
switching apparatus
provision
earth
detection
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.)
Granted
Application number
JP10620175A
Other languages
Japanese (ja)
Other versions
JPS5845263B2 (en
Inventor
Hiroshi Kakeyama
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 JP10620175A priority Critical patent/JPS5845263B2/en
Publication of JPS5229935A publication Critical patent/JPS5229935A/en
Publication of JPS5845263B2 publication Critical patent/JPS5845263B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)

Abstract

PURPOSE: To prevent misoperation of a protection device by the provision of a detector producing an output on the detection of grounding current to a grounding conductor for grounding a metal receptacle to the earth which is disposed surrounding electric lines outside of a protection range.
COPYRIGHT: (C)1977,JPO&Japio
JP10620175A 1975-09-02 1975-09-02 Kaihei Souchi Expired JPS5845263B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10620175A JPS5845263B2 (en) 1975-09-02 1975-09-02 Kaihei Souchi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10620175A JPS5845263B2 (en) 1975-09-02 1975-09-02 Kaihei Souchi

Publications (2)

Publication Number Publication Date
JPS5229935A true JPS5229935A (en) 1977-03-07
JPS5845263B2 JPS5845263B2 (en) 1983-10-07

Family

ID=14427539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10620175A Expired JPS5845263B2 (en) 1975-09-02 1975-09-02 Kaihei Souchi

Country Status (1)

Country Link
JP (1) JPS5845263B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5461516A (en) * 1993-03-31 1995-10-24 Olympus Optical Co., Ltd Multilayer film structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5461516A (en) * 1993-03-31 1995-10-24 Olympus Optical Co., Ltd Multilayer film structure

Also Published As

Publication number Publication date
JPS5845263B2 (en) 1983-10-07

Similar Documents

Publication Publication Date Title
JPS5229935A (en) Switching apparatus
CH610436A5 (en) Short-circuit protection device for an electrical transformer
JPS5223787A (en) Metal mold for drilling operation
JPS51143850A (en) Grounding current breaker
JPS51127425A (en) Electromagnetic shield means for electric apparatus
JPS5210541A (en) Supervisory device of protective earthing for electric apparatus
JPS51137847A (en) An earth trouble detecting apparatus with a detection circuit
JPS5413902A (en) Insulator for electrical equipment
JPS5313131A (en) Three phase transformer
JPS5435797A (en) Water leakage detector
JPS5213620A (en) Method to test the field coronal of the power equipment
JPS547139A (en) Shortcircuit fault detector for electric mchinery
JPS51127423A (en) Electromagnetic sheild means for electric apparatus
JPS5333341A (en) Discharge detector for electrical equipment
JPS5221635A (en) Trouble detecting appliance for electric power system
JPS53121306A (en) Apparatus for protecting insulator for ac railway cable sparking
JPS5367846A (en) Discharge counting apparatus for lightning conductor apparatus
JPS51133748A (en) Lightning conductor
JPS51140402A (en) Method of fixing housing of electroic equipment
JPS5296394A (en) Insulating tube for power
JPS5246459A (en) Protecting device of neutral conductor grounding detection
JPS5431533A (en) High voltage thyristor device
JPS5343850A (en) Grounding protection device
JPS5428465A (en) Water-proof device of apparatus
JPS5372143A (en) Electric machine and apparatus insulated by gas