ES2035273T3 - Sistema de comprobacion de fallos a tierra. - Google Patents

Sistema de comprobacion de fallos a tierra.

Info

Publication number
ES2035273T3
ES2035273T3 ES198888302668T ES88302668T ES2035273T3 ES 2035273 T3 ES2035273 T3 ES 2035273T3 ES 198888302668 T ES198888302668 T ES 198888302668T ES 88302668 T ES88302668 T ES 88302668T ES 2035273 T3 ES2035273 T3 ES 2035273T3
Authority
ES
Spain
Prior art keywords
earth fault
check system
fault check
loss
earth
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.)
Expired - Lifetime
Application number
ES198888302668T
Other languages
English (en)
Inventor
John Henry Simcock
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.)
Inductotherm Europe Ltd
Original Assignee
Inductotherm Europe 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 Inductotherm Europe Ltd filed Critical Inductotherm Europe Ltd
Application granted granted Critical
Publication of ES2035273T3 publication Critical patent/ES2035273T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5229—Manufacture of steel in electric furnaces in a direct current [DC] electric arc furnace
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/62—Testing of transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
    • H02H3/17—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass by means of an auxiliary voltage injected into the installation to be protected
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/22—Furnaces without an endless core
    • H05B6/24—Crucible furnaces
    • H05B6/28—Protective systems
    • 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
    • Y02P10/20—Recycling
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Furnace Details (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

EL INVENTO PROPORCIONA UN CIRCUITO DE ALIMENTACION DE HORNO QUE UTILIZA INYECCION DE CORRIENTE CONTINUA PARA COMPROBAR LA PERDIDA A TIERRA CON AISLAMIENTO AUTOMATICO DEL INVERSOR EN CASO DE DICHA PERDIDA.
ES198888302668T 1987-05-13 1988-03-25 Sistema de comprobacion de fallos a tierra. Expired - Lifetime ES2035273T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8711280A GB2205011B (en) 1987-05-13 1987-05-13 Earth fault check system

Publications (1)

Publication Number Publication Date
ES2035273T3 true ES2035273T3 (es) 1993-04-16

Family

ID=10617253

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888302668T Expired - Lifetime ES2035273T3 (es) 1987-05-13 1988-03-25 Sistema de comprobacion de fallos a tierra.

Country Status (8)

Country Link
EP (1) EP0291156B1 (es)
DE (1) DE3874602T2 (es)
DK (1) DK261188A (es)
ES (1) ES2035273T3 (es)
FI (1) FI881953A (es)
GB (1) GB2205011B (es)
NO (1) NO882024L (es)
PT (1) PT87421B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128961C1 (en) * 1991-08-29 1992-08-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De Detecting short circuit to earth in pulse inverter - using square wave HF voltage source in evaluation circuit to operate protection circuit when toroidal transformer saturates
DE19924106B4 (de) * 1999-05-26 2005-11-03 Ald Vacuum Technologies Ag Schaltungsanordnung für die Überwachung von Erdschlüssen an einem Ofen, der ein dreiphasiges Heizsystem aufweist
DE102013002796B4 (de) * 2012-11-09 2015-05-07 Abp Induction Systems Gmbh Verfahren zur Erdschlusserkennung in Mehrofenanlagen und eine Mehrofenanlage zur Durchführung eines derartigen Verfahrens
DE102013002795C5 (de) * 2012-11-09 2018-07-19 Abp Induction Systems Gmbh Verfahren und Vorrichtung zur Erdschlussermittlung bei einem Induktionsofen sowie Induktionsofen
DE102014213744A1 (de) * 2014-07-15 2016-01-21 Primetals Technologies Germany Gmbh Elektrischer Lichtbogenofen mit einer Sicherheitsvorrichtung und Verfahren zur Sicherung von Peripheriegeräten an elektrischen Lichtbogenöfen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB506665A (en) * 1937-12-01 1939-06-01 Philip George Houlder Burbridg Improvements in protective systems for electric induction furnace installations
GB758551A (en) * 1954-03-17 1956-10-03 Vickers Electrical Co Ltd Improvements in and relating to protective systems for electric induction furnace installations
US2832916A (en) * 1955-02-17 1958-04-29 Ajax Electrothermic Corp Ground detector
US3185894A (en) * 1960-08-17 1965-05-25 Asea Ab Means for indicating faults in the crucible of induction melting furnaces

Also Published As

Publication number Publication date
EP0291156A1 (en) 1988-11-17
PT87421A (pt) 1989-05-31
PT87421B (pt) 1993-09-30
GB8711280D0 (en) 1987-06-17
GB2205011B (en) 1991-02-06
DE3874602D1 (de) 1992-10-22
EP0291156B1 (en) 1992-09-16
FI881953A (fi) 1988-11-14
DE3874602T2 (de) 1993-04-15
DK261188D0 (da) 1988-05-11
DK261188A (da) 1988-11-14
GB2205011A (en) 1988-11-23
NO882024D0 (no) 1988-05-09
FI881953A0 (fi) 1988-04-26
NO882024L (no) 1988-11-14

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