JPS54136644A - Thyristor amplifier - Google Patents

Thyristor amplifier

Info

Publication number
JPS54136644A
JPS54136644A JP4422478A JP4422478A JPS54136644A JP S54136644 A JPS54136644 A JP S54136644A JP 4422478 A JP4422478 A JP 4422478A JP 4422478 A JP4422478 A JP 4422478A JP S54136644 A JPS54136644 A JP S54136644A
Authority
JP
Japan
Prior art keywords
thyristor
phase shifter
fed
amplifier
magnetic phase
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
JP4422478A
Other languages
Japanese (ja)
Inventor
Toshiaki Kurosawa
Kiyoya Shima
Takeyoshi Ando
Hiromi Inaba
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 JP4422478A priority Critical patent/JPS54136644A/en
Publication of JPS54136644A publication Critical patent/JPS54136644A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To protect the thyristor amplifier, by means of inhibiting an output of the phase shifter at an operational time of the overcurrnt fault detecting relay.
CONSTITUTION: A firing pulse, fed from an output winding 7, 8 of the magnetic phase shifter, makes a firing control for a thyristor 2, 3, to control the power fed to a load 4. At this time, in the primary side of a transformer 1 that feeds an AC power source to the thyristor amplifier, is provided an overcurrent relay 18 through a current transformer 16. In case of the overcurrent relay 18 happening to work due to a short-circuit of the thyristors 2, 3, a contact 18b2 of said overcurrent relay 18 disconnects a power supply to the magnetic phase shifter, to inhibit a firing pulse fed to the thyristor 2, 3 from the magnetic phase shifter, and protecting the thyristor amplifier.
COPYRIGHT: (C)1979,JPO&Japio
JP4422478A 1978-04-17 1978-04-17 Thyristor amplifier Pending JPS54136644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4422478A JPS54136644A (en) 1978-04-17 1978-04-17 Thyristor amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4422478A JPS54136644A (en) 1978-04-17 1978-04-17 Thyristor amplifier

Publications (1)

Publication Number Publication Date
JPS54136644A true JPS54136644A (en) 1979-10-23

Family

ID=12685564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4422478A Pending JPS54136644A (en) 1978-04-17 1978-04-17 Thyristor amplifier

Country Status (1)

Country Link
JP (1) JPS54136644A (en)

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