• IEC 60255-8:1990

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Electrical relays - Part 8: Thermal electrical relays

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  30-07-2013

    Language(s):  English - French

    Published date:  05-10-1990

    Publisher:  International Electrotechnical Committee

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    PREFACE
    Clause
    SECTION ONE - GENERAL
    l Scope and object
    2 Definitions
    SECTION TWO - REQUIREMENTS
    3 Standard values
    4 Accuracy
    SECTION THREE - TEST METHODS
    5 Tests related to operating characteristics and accuracy
    6 Tests for thermal requirements
    Figures
    Appendix A - Characteristic curves, cold curves
    Appendix B - Characteristic curves, hot curves
    Appendix C - Example for determining accuracy

    Abstract - (Show below) - (Hide below)

    This edition supersedes the first edition of IEC 60255-8 (1978) and IEC 60255-17 (1982).Applies to dependent specified time electrical measuring relays which protect equipment from electrical thermal damage by the measurement of current flowing in protected equipment. States the particular requirements for thermal electrical relays. Is to be read in conjunction with higher level documents in the IEC 60255 series.

    General Product Information - (Show below) - (Hide below)

    Committee TC 95
    Development Note THIS EDITION SUPERSEDES THE FIRST EDITION OF IEC255-8(1978) AND IEC 255-17(1982). Stability Date: 2010. (10/2012)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS EN 62271-106:2011 High-voltage switchgear and controlgear Alternating current contactors, contactor-based controllers and motor-starters
    CSA E926 : 1998 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - GENERAL AND SAFETY REQUIREMENTS
    DIN EN 60926 : 2000 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - GENERAL AND SAFETY REQUIREMENTS
    BS 6796(1986) : 1986 SPECIFICATION FOR FLICKERMETERS
    I.S. EN 60694:1999 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    IEC 60694:1996+AMD1:2000+AMD2:2001 CSV Common specifications for high-voltage switchgear and controlgear standards
    EN 60694:1996/A2:2001 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    EN 60926:1996/A1:1999 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - GENERAL AND SAFETY REQUIREMENTS
    BS EN 60255-151 : 2009 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 151: FUNCTIONAL REQUIREMENTS FOR OVER/UNDER CURRENT PROTECTION
    CEI EN 60255-151 : 2011 RELAIS DE MESURE ET DISPOSITIFS DE PROTECTION - PARTIE 151: EXIGENCES FONCTIONNELLES POUR LES PROTECTIONS A MAXIMUM ET MINIMUM DE COURANT
    04/30111859 DC : 0 IEC 62271-1 - HIGH-VOLTAGE SWITCHGEAR AND CONTROL GEAR - PART 1: COMMON SPECIFICATIONS
    BS EN 61347-2-1 : 2001 LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS)
    VDE 0435-303 : 1984 ELECTRICAL RELAYS; STATIC MEASURING RELAYS (SMR)
    BIS IS/IEC 60947-5-1 : 2003 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 5: CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS - SECTION 1: ELECTROMECHANICAL CONTROL CIRCUIT DEVICES
    BS 142-2.3(1984) : LATEST ELECTRICAL PROTECTION RELAYS - REQUIREMENTS FOR THE PRINCIPAL FAMILIES OF PROTECTION RELAYS - SPECIFICATION FOR THERMAL ELECTRICAL RELAYS
    07/30168458 DC : 0 BS EN 60255-151 - MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 151: FUNCTIONAL STANDARD FOR OVER/UNDER CURRENT PROTECTION
    CAN/CSA-E926-98 (R2017) Auxiliaries for Lamps - Starting Devices (Other Than Glow Starters) - General and Safety Requirements (Adopted CEI/IEC 926:1995, second edition, 1995-01, with Canadian deviations) | Appareils auxiliaires pour lampes - Dispositifs d\'amorçage (autres que starters à lueur) - Prescriptions générales et prescriptions de sécurité(norme CEI/IEC 926:1995 adoptée, deuxième édition, 1995-01, avec exigences propres au Canada)
    I.S. EN 61347-2-1:2004 LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS)
    BIS IS/IEC 62271-1 : 2007 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: COMMON SPECIFICATIONS
    DIN 57435-303 : 1984 ELECTRICAL RELAYS: STATIC MEASURING RELAYS
    BS EN 60470 : 2001 HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS AND CONTACTOR-BASED MOTOR STARTERS
    BS EN 60255-3 : 1998 ELECTRICAL RELAYS - PART 3: SINGLE INPUT ENERGIZING QUANTITY MEASURING RELAYS WITH DEPENDENT OR INDEPENDENT TIME
    DIN VDE 0660-102 : 1992 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 4-1: ELECTROMECHANICAL CONTACTORS AND MOTOR-STARTERS
    CSA E926 : 1998 : INC : UPD 1 : 1998 : R2012 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - GENERAL AND SAFETY REQUIREMENTS
    I.S. EN 60255-151:2009 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 151: FUNCTIONAL REQUIREMENTS FOR OVER/UNDER CURRENT PROTECTION
    IEC 62271-106:2011 High-voltage switchgear and controlgear - Part 106: Alternating current contactors, contactor-based controllers and motor-starters
    IEC 61347-2-1:2000+AMD1:2005+AMD2:2013 CSV Lamp controlgear - Part 2-1: Particular requirements for startingdevices (other than glow starters)
    UNE-EN 62271-106:2012 High-voltage switchgear and controlgear - Part 106: Alternating current contactors, contactor-based controllers and motor-starters
    DIN EN 60868 : 1994 FLICKERMETER - FUNCTIONAL AND DESIGN SPECIFICATIONS
    08/30183795 DC : DRAFT JUNE 2008 BS EN 62271-106 - HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 106: ALTERNATING CURRENT CONTACTORS, CONTACTOR-BASED CONTROLLERS AND CONTACTOR-BASED MOTOR-STARTERS
    I.S. EN 62271-106:2011 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 106: ALTERNATING CURRENT CONTACTORS, CONTACTOR-BASED CONTROLLERS AND MOTOR-STARTERS (IEC 62271-106:2011 (EQV))
    04/300382 DC : DRAFT JAN 2004 IEC 61347-2-1 A1 ED.1 - LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS)
    BS EN 60694 : 1997 COMMON SPECIFICATION FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    NF EN 61347-2-1 : 2001 AMD 2 2014 LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS)
    EN 62271-106 : 2011 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 106: ALTERNATING CURRENT CONTACTORS, CONTACTOR-BASED CONTROLLERS AND MOTOR-STARTERS (IEC 62271-106:2011)
    BIS IS/IEC 60947-4-1 : 2000 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 4: CONTACTORS AND MOTOR-STARTERS - SECTION 1: ELECTROMECHANICAL CONTACTORS AND MOTOR-STARTERS
    IEC 60255-151:2009 Measuring relays and protection equipment - Part 151: Functional requirements for over/under current protection
    EN 60470:2000/corrigendum Jun. 2000 HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS AND CONTACTOR-BASED MOTOR STARTERS
    EN 60255-151 : 2009 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 151: FUNCTIONAL REQUIREMENTS FOR OVER/UNDER CURRENT PROTECTION
    EN 61347-2-1:2001/A2:2014 LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS) (IEC 61347-2-1:2000/A2:2013)
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