JPS5549998A - Protective system of thyristor scherbius device - Google Patents

Protective system of thyristor scherbius device

Info

Publication number
JPS5549998A
JPS5549998A JP12080278A JP12080278A JPS5549998A JP S5549998 A JPS5549998 A JP S5549998A JP 12080278 A JP12080278 A JP 12080278A JP 12080278 A JP12080278 A JP 12080278A JP S5549998 A JPS5549998 A JP S5549998A
Authority
JP
Japan
Prior art keywords
scherbius
thyristor
electromagnetic contactor
speed
short
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
JP12080278A
Other languages
Japanese (ja)
Inventor
Osamu Matsumura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12080278A priority Critical patent/JPS5549998A/en
Publication of JPS5549998A publication Critical patent/JPS5549998A/en
Pending legal-status Critical Current

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  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To protect a thyristor converting device from overcurrents, by changing the flows of currents by making an electromagnetic contactor for short-circuit operation by detecting the failure of the commutation of a thyristor.
CONSTITUTION: When the preparation of operation is completed, an electromagnetic contactor 6 for acceleration is made. When operational instructions are emitted, a breaker 52 at the primary side of a motor is made and the motor is gradually accelerated, an electromagnetic contactor 42 for working a Scherbius device is closed when the speed of the motor reaches Scherbius operation making speed, and speed becomes constant at Scherbius operation set speed. Meanwhile, when commutation failure detecting signals are issued, an electromagnetic contactor 41 for secondary short-circuits is instantaneously closed, main circuit currents are moved at the short-circuit side at the secondary side and a thyristor Scherbius device is protected from overcurrents.
COPYRIGHT: (C)1980,JPO&Japio
JP12080278A 1978-09-30 1978-09-30 Protective system of thyristor scherbius device Pending JPS5549998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12080278A JPS5549998A (en) 1978-09-30 1978-09-30 Protective system of thyristor scherbius device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12080278A JPS5549998A (en) 1978-09-30 1978-09-30 Protective system of thyristor scherbius device

Publications (1)

Publication Number Publication Date
JPS5549998A true JPS5549998A (en) 1980-04-11

Family

ID=14795344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12080278A Pending JPS5549998A (en) 1978-09-30 1978-09-30 Protective system of thyristor scherbius device

Country Status (1)

Country Link
JP (1) JPS5549998A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59109398A (en) * 1982-12-16 1984-06-25 三真商事株式会社 Intermediate lead for note and its manufacture
JPS59137083U (en) * 1983-03-03 1984-09-12 豊国商事株式会社 marking pen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59109398A (en) * 1982-12-16 1984-06-25 三真商事株式会社 Intermediate lead for note and its manufacture
JPS59137083U (en) * 1983-03-03 1984-09-12 豊国商事株式会社 marking pen
JPS622150Y2 (en) * 1983-03-03 1987-01-19

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