JPS5395247A - Motor overloading, phaseless and grouding protective relay - Google Patents

Motor overloading, phaseless and grouding protective relay

Info

Publication number
JPS5395247A
JPS5395247A JP937377A JP937377A JPS5395247A JP S5395247 A JPS5395247 A JP S5395247A JP 937377 A JP937377 A JP 937377A JP 937377 A JP937377 A JP 937377A JP S5395247 A JPS5395247 A JP S5395247A
Authority
JP
Japan
Prior art keywords
grouding
phaseless
motor
protective relay
motor overloading
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
JP937377A
Other languages
Japanese (ja)
Inventor
Yasuhiro Takino
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing Co 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP937377A priority Critical patent/JPS5395247A/en
Publication of JPS5395247A publication Critical patent/JPS5395247A/en
Pending legal-status Critical Current

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  • Protection Of Generators And Motors (AREA)

Abstract

PURPOSE: To operate a switchgear and protect a motor using a heater and a heat sensitive switch against the shorticircuit and overload of a motor and the phaselessness of a power supply and a grounding relay due to the zero phase detection against grouding.
COPYRIGHT: (C)1978,JPO&Japio
JP937377A 1977-01-31 1977-01-31 Motor overloading, phaseless and grouding protective relay Pending JPS5395247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP937377A JPS5395247A (en) 1977-01-31 1977-01-31 Motor overloading, phaseless and grouding protective relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP937377A JPS5395247A (en) 1977-01-31 1977-01-31 Motor overloading, phaseless and grouding protective relay

Publications (1)

Publication Number Publication Date
JPS5395247A true JPS5395247A (en) 1978-08-21

Family

ID=11718654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP937377A Pending JPS5395247A (en) 1977-01-31 1977-01-31 Motor overloading, phaseless and grouding protective relay

Country Status (1)

Country Link
JP (1) JPS5395247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01110017A (en) * 1987-10-23 1989-04-26 Yaskawa Electric Mfg Co Ltd Inspecting device for motor grounding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01110017A (en) * 1987-10-23 1989-04-26 Yaskawa Electric Mfg Co Ltd Inspecting device for motor grounding

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