JPS52154059A - Protective device for dc motor - Google Patents

Protective device for dc motor

Info

Publication number
JPS52154059A
JPS52154059A JP7120376A JP7120376A JPS52154059A JP S52154059 A JPS52154059 A JP S52154059A JP 7120376 A JP7120376 A JP 7120376A JP 7120376 A JP7120376 A JP 7120376A JP S52154059 A JPS52154059 A JP S52154059A
Authority
JP
Japan
Prior art keywords
motor
protective device
breaker
trip
enhance
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
JP7120376A
Other languages
Japanese (ja)
Inventor
Masao Okumura
Yoshio Sekiyama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7120376A priority Critical patent/JPS52154059A/en
Publication of JPS52154059A publication Critical patent/JPS52154059A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enhance a reliability by such that with a breaker of magnet trip type inserted into the main circuit, a current flowing at the time of DC motor stopping be detected to trip the breaker by a condition of AND operation with the stop signal.
COPYRIGHT: (C)1977,JPO&Japio
JP7120376A 1976-06-18 1976-06-18 Protective device for dc motor Pending JPS52154059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7120376A JPS52154059A (en) 1976-06-18 1976-06-18 Protective device for dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7120376A JPS52154059A (en) 1976-06-18 1976-06-18 Protective device for dc motor

Publications (1)

Publication Number Publication Date
JPS52154059A true JPS52154059A (en) 1977-12-21

Family

ID=13453872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7120376A Pending JPS52154059A (en) 1976-06-18 1976-06-18 Protective device for dc motor

Country Status (1)

Country Link
JP (1) JPS52154059A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5495347A (en) * 1978-01-13 1979-07-27 Hitachi Ltd Appartus for preventing burning of motor field coil
JPS57132728A (en) * 1981-02-06 1982-08-17 Hitachi Ltd Device for protecting rolling machine motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827702U (en) * 1971-08-07 1973-04-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827702U (en) * 1971-08-07 1973-04-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5495347A (en) * 1978-01-13 1979-07-27 Hitachi Ltd Appartus for preventing burning of motor field coil
JPS57132728A (en) * 1981-02-06 1982-08-17 Hitachi Ltd Device for protecting rolling machine motor

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