JPS5366028A - Arc furnace protecting device - Google Patents

Arc furnace protecting device

Info

Publication number
JPS5366028A
JPS5366028A JP14182876A JP14182876A JPS5366028A JP S5366028 A JPS5366028 A JP S5366028A JP 14182876 A JP14182876 A JP 14182876A JP 14182876 A JP14182876 A JP 14182876A JP S5366028 A JPS5366028 A JP S5366028A
Authority
JP
Japan
Prior art keywords
protecting device
arc furnace
furnace protecting
furnace
pulled
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
JP14182876A
Other languages
Japanese (ja)
Inventor
Akira Toyoshima
Takeshi Ito
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 JP14182876A priority Critical patent/JPS5366028A/en
Publication of JPS5366028A publication Critical patent/JPS5366028A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Discharge Heating (AREA)
  • Furnace Details (AREA)

Abstract

PURPOSE: To provide an arc furnace protecting device wherein the electrode is pulled up when excess current is detected in the secondary side of a furnace transformer and further, the furnace is shut down when an electric current exceeding a predetermined magnitude flows for a prolonged period of time.
COPYRIGHT: (C)1978,JPO&Japio
JP14182876A 1976-11-26 1976-11-26 Arc furnace protecting device Pending JPS5366028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14182876A JPS5366028A (en) 1976-11-26 1976-11-26 Arc furnace protecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14182876A JPS5366028A (en) 1976-11-26 1976-11-26 Arc furnace protecting device

Publications (1)

Publication Number Publication Date
JPS5366028A true JPS5366028A (en) 1978-06-13

Family

ID=15301061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14182876A Pending JPS5366028A (en) 1976-11-26 1976-11-26 Arc furnace protecting device

Country Status (1)

Country Link
JP (1) JPS5366028A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101036079B1 (en) * 2002-07-12 2011-05-19 맥그로우-에디슨 컴파니 Electrical network protection system and protection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101036079B1 (en) * 2002-07-12 2011-05-19 맥그로우-에디슨 컴파니 Electrical network protection system and protection method

Similar Documents

Publication Publication Date Title
JPS5366028A (en) Arc furnace protecting device
JPS5251549A (en) Over voltage and over current suppression equipment for inverter
JPS5210514A (en) Transformation device
JPS52139940A (en) Constant voltage power source device
JPS52115345A (en) Protecting device of electric current control type inverter
JPS5216647A (en) Protection device for excess voltage
JPS5425445A (en) Apparatus protective device
JPS5324528A (en) Prevention device of electric shock
JPS5296303A (en) Ac generator for use of automobile
JPS52128539A (en) Protective device of excess current
JPS5341745A (en) Overcurrent protector for intermittent load
JPS5316843A (en) Protective relay device
JPS5214855A (en) Ac load start regulating device
JPS5248031A (en) Control device for in-door wiring connected apparatus
JPS52120353A (en) Protective device for dc power transmission system
JPS5334149A (en) Dc glow discharge device
JPS52115346A (en) Protecting device of transformer
JPS5236861A (en) Remote control circuit for electric cleaner and the like
JPS52140831A (en) Surge absorption circuit for power converter
JPS5324526A (en) Prevention device of electric shock
JPS51143814A (en) Generator control apparatus
JPS5435193A (en) Controlling device of furnace for making graphite
JPS51125841A (en) High-voltage power supply with protective circuit
JPS52132354A (en) Protective relay device for transformer
JPS51123935A (en) Induction heating device