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  • IEC 61557-1:2007

    View superseded by
    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
    View superseded by

    Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements

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

    Superseded date:  31-12-2021

    Language(s):  English - French, Spanish, Castilian

    Published date:  29-01-2007

    Publisher:  International Electrotechnical Committee

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

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Requirements
      4.1 Operating uncertainty (B), percentage operating
           uncertainty (B[%])
      4.2 Rated operating conditions
      4.3 Battery check facility
      4.4 Terminals
      4.5 Class of protection
      4.6 Class of pollution
      4.7 Overvoltage category
      4.8 Measuring category
      4.9 Electromagnetic compatibility
      4.10 Vibration test
    5 Marking and operating instructions
      5.1 Marking
      5.2 Operating instructions
    6 Tests
      6.1 Influence of position
      6.2 Influence of temperature
      6.3 Influence of the supply voltage
      6.4 Battery check facility
      6.5 Protection class
      6.6 Terminals
      6.7 Mechanical requirements
      6.8 Marking and operating instructions
    Bibliography

    Abstract - (Show below) - (Hide below)

    This part of IEC 61557 specifies the general requirements for measuring and monitoring equipment for testing the electrical safety in low voltage distribution systems with nominal voltages up to 1 000 V a.c. and 1 500 V d.c. When measuring equipment or measuring installations involve measurement tasks of various measuring equipment covered by this series of standards, then the part of this series of standards relevant to each of the measurement tasks is applicable. This second edition replaces and cancels the first edition published in 1997. It constitutes a technical revision. The following changes were made with respect to the previous edition: a) revision of the definitions; b) addition of influence quantities E9 and E10; c) the subclause on Electromagnetic compatibility was complemented; d) inclusion of performance monitoring devices in the introduction; e) addition of new requirements for operating instructions.

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

    Committee TC 85
    Development Note Stability Date: 2017. (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 61557-2:2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Insulation resistance
    BS EN 61326-2-4:2013 ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL AND LABORATORY USE - EMC REQUIREMENTS - PART 2-4: PARTICULAR REQUIREMENTS - TEST CONFIGURATIONS, OPERATIONAL CONDITIONS AND PERFORMANCE CRITERIA FOR INSULATION MONITORING DEVICES ACCORDING TO IEC 61557-8 AND FOR EQUIPMENT FOR INSULATION FAULT LOCATION ACCORDING TO IEC 61557-9 (IEC 61326-2-4:2012)
    04/30122740 DC : DRAFT SEP 2004 IEC 60974-4 - ARC WELDING EQUIPMENT - PART 4: SAFETY, MAINTENANCE AND INSPECTION OF ARC WELDING EQUIPMENT IN USE
    09/30214359 DC : 0 BS EN 50533 - RAILWAY APPLICATIONS - THREE-PHASE TRAIN LINE VOLTAGE CHARACTERISTICS
    CEI EN 61557-3 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 3: LOOP IMPEDANCE
    BS EN 50533 : 2011 RAILWAY APPLICATIONS - THREE-PHASE TRAIN LINE VOLTAGE CHARACTERISTICS
    NF EN 61557-16 : 2015 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 16: EQUIPMENT FOR TESTING THE EFFECTIVENESS OF THE PROTECTIVE MEASURES OF ELECTRICAL EQUIPMENT AND/OR MEDICAL ELECTRICAL EQUIPMENT
    04/30125199 DC : DRAFT NOV 2004 IEC 61557-6 ED.2 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 6: RESIDUAL CURRENT DEVICES (RCD) IN TT AND TN SYSTEMS
    BS EN 62353:2014 Medical electrical equipment. Recurrent test and test after repair of medical electrical equipment
    I.S. EN 61557-7:2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 000 V A.C. AND 1 500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 7: PHASE SEQUENCE
    I.S. EN 61557-16:2015 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 16: EQUIPMENT FOR TESTING THE EFFECTIVENESS OF THE PROTECTIVE MEASURES OF ELECTRICAL EQUIPMENT AND/OR MEDICAL ELECTRICAL EQUIPMENT
    CEI EN 61557-14 : 2014 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 14: EQUIPMENT FOR TESTING THE SAFETY OF ELECTRICAL EQUIPMENT OF MACHINERY
    NF EN 61557-12 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 12: PERFORMANCE MEASURING AND MONITORING DEVICES (PMD)
    I.S. EN 61557-10:2013 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 10: COMBINED MEASURING EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES (IEC 61557-10:2013 (EQV))
    07/30159711 DC : 0 BS EN 61557-11 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 11: EFFECTIVENESS OF RESIDUAL CURRENT MONITORS (RCMS) TYPE A AND TYPE B IN TT, TN AND IT SYSTEMS
    04/30125208 DC : DRAFT NOV 2004 IEC 61557-8 ED.2 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 8: INSULATION MONITORING DEVICES FOR IT SYSTEMS
    BS EN 61557-11:2009 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c.. Equipment for testing, measuring or monitoring of protective measures Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems
    EN 61557-14:2013 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 14: Equipment for testing the safety of electrical equipment of machinery
    EN 61557-3:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance
    EN 61557-10:2013 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 10: Combined measuring equipment for testing, measuring or monitoring of protective measures
    EN 61010-2-033 : 2012 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 2-033: PARTICULAR REQUIREMENTS FOR HAND-HELD MULTIMETERS AND OTHER METERS, FOR DOMESTIC AND PROFESSIONAL USE, CAPABLE OF MEASURING MAINS VOLTAGE (IEC 61010-2-033:2012)
    EN 61557-15:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 15: Functional safety requirements for insulation monitoring devices in IT systems and equipment for insulation fault location in IT systems
    EN 61557-11:2009 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 11: Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems
    EN 62353:2014 Medical electrical equipment - Recurrent test and test after repair of medical electrical equipment
    15/30328086 DC BS EN 61557-12. Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Part 12. Power metering and monitoring devices (PMD)
    04/30125189 DC : DRAFT NOV 2004 IEC 61557-4 ED.2 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 4: RESISTANCE OF EARTH CONNECTION AND EQUIPOTENTIAL BONDING
    I.S. EN 61010-2-033:2012 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 2-033: PARTICULAR REQUIREMENTS FOR HAND-HELD MULTIMETERS AND OTHER METERS, FOR DOMESTIC AND PROFESSIONAL USE, CAPABLE OF MEASURING MAINS VOLTAGE (IEC 61010-2-033:2012 (EQV))
    IEC 61557-12:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 12: Performance measuring and monitoring devices (PMD)
    BS EN 61557-6:1998 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 6: EFFECTIVENESS OF RESIDUAL CURRENT DEVICES (RCD) IN TT, TN AND IT SYSTEMS
    PD IEC/TS 62786:2017 Distributed energy resources connection with the grid
    NF EN 61557-11 : 2009 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 11: EFFECTIVENESS OF RESIDUAL CURRENT MONITORS (RCMS) TYPE A AND TYPE B IN TT, TN AND IT SYSTEMS
    10/30219049 DC : 0 BS EN 62638 - RECURRENT TEST AND TEST AFTER REPAIR AND MODIFICATION OF ELECTRICAL EQUIPMENT
    BS EN 61557-7:2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Phase sequence
    BS EN 61557-5:2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Resistance to earth
    DIN EN 61557-4 : 2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 4: RESISTANCE OF EARTH CONNECTION AND EQUIPOTENTIAL BONDING
    UNE-EN 61557-12:2010 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures -- Part 12: Performance measuring and monitoring devices (PMD)
    CEI EN 61557-13 : 2012 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 13: HAND-HELD AND HAND-MANIPULATED CURRENT CLAMPS AND SENSORS FOR MEASUREMENT OF LEAKAGE CURRENTS IN ELECTRICAL DISTRIBUTION SYSTEMS
    I.S. EN 62353:2014 MEDICAL ELECTRICAL EQUIPMENT - RECURRENT TEST AND TEST AFTER REPAIR OF MEDICAL ELECTRICAL EQUIPMENT
    I.S. EN 61557-4:2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 4: RESISTANCE OF EARTH CONNECTION AND EQUIPOTENTIAL BONDING
    I.S. EN 61557-9:2015 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 9: EQUIPMENT FOR INSULATION FAULT LOCATION IN IT SYSTEMS
    I.S. EN 61557-2:2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 2: INSULATION RESISTANCE
    I.S. EN 61557-5:2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 5: RESISTANCE TO EARTH
    IEC 62353:2014 Medical electrical equipment - Recurrent test and test after repair of medical electrical equipment
    IEC 61010-2-033:2012 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters and other meters, for domestic and professional use, capable of measuring mains voltage
    EN 61557-8:2015/AC:2016-06 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems
    DIN EN 61557-7 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 7: PHASE SEQUENCE
    OVE/ONORM EN 61557-6 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 6: EFFECTIVENESS OF RESIDUAL CURRENT DEVICES (RCD) IN TT, TN AND IT SYSTEMS
    CEI EN 61557-11 : 2013 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 11: EFFECTIVENESS OF RESIDUAL CURRENT MONITORS (RCMS) TYPE A AND TYPE B IN TT, TN AND IT SYSTEMS
    UNE-EN 61557-13:2012 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems
    BIS IS/IEC 62353 : 2007 MEDICAL ELECTRICAL EQUIPMENT - RECURRENT TEST AND TEST AFTER REPAIR OF MEDICAL ELECTRICAL EQUIPMENT
    04/30125178 DC : DRAFT NOV 2004 IEC 61557-2 ED.2 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 2: INSULATION RESISTANCE
    NF EN 61557-4 : 2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 4: RESISTANCE OF EARTH CONNECTION AND EQUIPOTENTIAL BONDING
    12/30262863 DC : 0 BS EN 61557-16 - ELECTRICAL SAFETY IN DISTRIBUTION SYSTEMS UP TO 1000 V A.C AND 1500 V D.C - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 16: EQUIPMENT FOR TESTING THE SAFETY OF ELECTRICAL EQUIPMENT AND MEDICAL ELECTRICAL EQUIPMENT ACCORDING TO IEC 62638 AND IEC 62353
    IEC TS 62786:2017 Distributed energy resources connection with the grid
    10/30236436 DC : 0 BS EN 61557-10 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. - AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 10: COMBINED MEASURING EQUIPMENT FOR TESTING, MEASURING AND MONITORING OF PROTECTIVE MEASURES
    NF EN 61557-7 : 2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 7: PHASE SEQUENCE
    UNE-EN 62353:2015 Medical electrical equipment - Recurrent test and test after repair of medical electrical equipment
    I.S. EN 61557-14:2013 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 000 V A.C. AND 1 500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 14: EQUIPMENT FOR TESTING THE SAFETY OF ELECTRICAL EQUIPMENT OF MACHINERY (IEC 61557-14:2013 (EQV))
    CEI EN 61557-4 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 4: RESISTANCE OF EARTH CONNECTION AND EQUIPOTENTIAL BONDING
    NF EN 61557-13 : 2012 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 13: HAND-HELD AND HAND-MANIPULATED CURRENT CLAMPS AND SENSORS FOR MEASUREMENT OF LEAKAGE CURRENTS IN ELECTRICAL DISTRIBUTION SYSTEMS
    I.S. EN 61326-2-4:2013 ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL AND LABORATORY USE - EMC REQUIREMENTS - PART 2-4: PARTICULAR REQUIREMENTS - TEST CONFIGURATIONS, OPERATIONAL CONDITIONS AND PERFORMANCE CRITERIA FOR INSULATION MONITORING DEVICES ACCORDING TO IEC 61557-8 AND FOR EQUIPMENT FOR INSULATION FAULT LOCATION ACCORDING TO IEC 61557-9 (IEC 61326-2-4:2012 (EQV))
    I.S. EN 61557-12:2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 12: PERFORMANCE MEASURING AND MONITORING DEVICES (PMD)
    CEI EN 61557-7 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 7: PHASE SEQUENCE
    I.S. EN 61557-3:2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 3: LOOP IMPEDANCE
    UNE-EN 61557-8:2016 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems
    IEC 61557-3:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance
    IEC 61557-2:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
    04/30125185 DC : DRAFT NOV 2004 IEC 61557-3 ED.2 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 3: LOOP IMPEDANCE
    DIN EN 61557-5 : 2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 5: RESISTANCE TO EARTH
    NF EN 61557-2 : 2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 2: INSULATION RESISTANCE
    13/30250915 DC : 0 BS EN 62353 - MEDICAL ELECTRICAL EQUIPMENT - RECURRENT TEST AND TEST AFTER REPAIR OF MEDICAL ELECTRICAL EQUIPMENT
    10/30216301 DC : 0 BS EN 61557-14 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C AND 1500 V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 14: EQUIPMENT FOR TESTING THE SAFETY OF ELECTRICAL EQUIPMENT FOR MACHINERY
    BS EN 61557-13:2011 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems
    BS EN 61557-3:2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Loop impedance
    BS EN 61557-16:2015 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Equipment for testing the effectiveness of the protective measures of electrical equipment and/or medical electrical equipment
    17/30364658 DC : 0 BS EN 61010-2-033 ED.2.0 - SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORYUSE - PART 2-033: PARTICULAR REQUIREMENTS FOR HAND-HELD MULTIMETERS AND OTHER METERS; FOR DOMESTIC AND PROFESSIONAL USE; CAPABLE OF MEASURING MAINS VOLTAGE
    CEI EN 61557-5 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 5: RESISTANCE TO EARTH
    04/30125193 DC : DRAFT NOV 2004 IEC 61557-5 ED.2 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 5: RESISTANCE TO EARTH
    04/30125204 DC : DRAFT NOV 2004 IEC 61557-7 ED.2 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 7: PHASE SEQUENCE
    I.S. EN 50533:2011 RAILWAY APPLICATIONS - THREE-PHASE TRAIN LINE VOLTAGE CHARACTERISTICS
    NF EN 61557-5 : 2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 5: RESISTANCE TO EARTH
    DIN EN 61557-2 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 2: INSULATION RESISTANCE
    CEI EN 61557-12 : 2013 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 12: PERFORMANCE MEASURING AND MONITORING DEVICES (PMD)
    CEI EN 61557-2 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 2: INSULATION RESISTANCE
    I.S. EN 61557-8:2015 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 8: INSULATION MONITORING DEVICES FOR IT SYSTEMS
    I.S. EN 61557-13:2011 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 13: HAND-HELD AND HAND-MANIPULATED CURRENT CLAMPS AND SENSORS FOR MEASUREMENT OF LEAKAGE CURRENTS IN ELECTRICAL DISTRIBUTION SYSTEMS (IEC 61557-13:2011 (EQV))
    IEC 61557-4:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connection and equipotential bonding
    IEC 61557-10:2013 Electrical safety in low voltage distribution systems up to 1 000 v a.c. and 1 500 v d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 10: Combined measuring equipment for testing, measuring and monitoring of protective measures
    12/30228018 DC : 0 BS EN 61557-15 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 15: FUNCTIONAL SAFETY REQUIREMENTS FOR INSULATION MONITORING DEVICES AND FOR EQUIPMENT FOR INSULATION FAULT LOCATION IN IT SYSTEMS
    IEC 61557-8:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems
    IEC 61326-2-4:2012 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-4: Particular requirements - Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61557-8 and for equipment for insulation fault location according to IEC 61557-9
    UNE-EN 61557-11:2010 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 11: Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems
    IEC 61557-9:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems
    IEC 61557-15:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 15: Functional safety requirements for insulation monitoring devices in IT systems and equipment for insulation fault location in IT systems
    IEC 61557-7:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence
    IEC 61557-13:2011 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems
    IEC 61557-11:2009 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 11: Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems
    IEC 61557-6:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 6: Effectiveness of residual current devices (RCD) in TT, TN and IT systems
    IEC 61557-16:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c - Equipment for testing, measuring or monitoring of protective measures - Part 16: Equipment for testing the effectiveness of the protective measures of electrical equipment and/or medical electrical equipment
    EN 61557-13:2011 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems
    BS EN 61557-4:2007 (published 2007-06) Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Resistance of earth connection and equipotential bonding
    UNE-EN 61010-2-033:2012 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters and other meters, for domestic and professional use, capable of measuring mains voltage
    UNE-EN 50533:2012 Railway applications - Three-phase train line voltage characteristics.
    BS EN 61557-10:2013 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Combined measuring equipment for testing, measuring or monitoring of protective measures
    BS EN 61557-12:2008 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Performance measuring and monitoring devices (PMD)
    CSA C22.2 No. 61010-2-033 : 2014 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 2-033: PARTICULAR REQUIREMENTS FOR HAND-HELD MULTIMETERS AND OTHER METERS, FOR DOMESTIC AND PROFESSIONAL USE, CAPABLE OF MEASURING MAINS VOLTAGE
    CEI EN 61557-8 : 2016 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 8: INSULATION MONITORING DEVICES FOR IT SYSTEMS
    08/30180629 DC : 0 BS EN 61557-13 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 13: HAND-HELD AND HAND-MANIPULATED CURRENT CLAMPS AND SENSORS FOR MEASUREMENT OF LEAKAGE CURRENTS IN ELECTRICAL DISTRIBUTION SYSTEMS
    I.S. EN 61557-11:2009 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 11: EFFECTIVENESS OF RESIDUAL CURRENT MONITORS (RCMS) TYPE A AND TYPE B IN TT, TN AND IT SYSTEMS
    CEI EN 61557-10 : 2014 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 10: COMBINED MEASURING EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES
    PREN 50533 : DRAFT 2009 RAILWAY APPLICATIONS - THREE-PHASE TRAIN LINE VOLTAGE CHARACTERISTICS
    DIN EN 61557-3 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 3: LOOP IMPEDANCE
    BS EN 61557-14:2013 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Equipment for testing the safety of electrical equipment of machinery
    BS EN 61010-2-033:2012 Safety requirements for electrical equipment for measurement, control, and laboratory use Particular requirements for hand-held multimeters and other meters, for domestic and professional use, capable of measuring mains voltage
    EN 61326-2-4:2013 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-4: Particular requirements - Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61557-8 and for equipment for insulation fault location according to IEC 61557-9
    NF EN 61557-3 : 2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 3: LOOP IMPEDANCE
    NF EN 61557-6 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 6: EFFECTIVENESS OF RESIDUAL CURRENT DEVICES (RCD) IN TT, TN AND IT SYSTEMS
    I.S. EN 61557-15:2014 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 15: FUNCTIONAL SAFETY REQUIREMENTS FOR INSULATION MONITORING DEVICES IN IT SYSTEMS AND EQUIPMENT FOR INSULATION FAULT LOCATION IN IT SYSTEMS
    CEI EN 61557-6 : 2008 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 6: EFFECTIVENESS OF RESIDUAL CURRENT DEVICES (RCD) IN TT, TN AND IT SYSTEMS
    I.S. EN 61557-6:2007 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 6: EFFECTIVENESS OF RESIDUAL CURRENT DEVICES (RCD) IN TT, TN AND IT SYSTEMS
    BS EN 61557-8:2015 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Insulation monitoring devices for IT systems
    12/30274733 DC : 0 BS EN 61557-8 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 8: INSULATION MONITORING DEVICES FOR IT SYSTEMS
    12/30274737 DC : 0 BS EN 61557-9 - ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 9: EQUIPMENT FOR INSULATION FAULT LOCATION IN IT SYSTEMS
    IEC 61557-14:2013 Electrical safety in low voltage distribution systems up to 1 000 V a.c and 1 500 V d.c - Equipment for testing,measuring or monitoring of protective measures - Part 14: Equipment for testing the safety of electrical equipment for machinery
    BS EN 61557-9:2015 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Equipment for insulation fault location in IT systems
    BS EN 61557-15:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Functional safety requirements for insulation monitoring devices in IT systems and equipment for insulation fault location in IT systems
    IEC 61557-5:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 5: Resistance to earth
    EN 61557-7:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence
    EN 61557-5:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 5: Resistance to earth
    EN 61557-12:2008 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 12: Performance measuring and monitoring devices (PMD)
    EN 61557-9:2015/AC:2017-02 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 9: EQUIPMENT FOR INSULATION FAULT LOCATION IN IT SYSTEMS (IEC 61557-9:2014/COR2:2017)
    EN 61557-2:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
    EN 61557-16:2015 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 16: Equipment for testing the effectiveness of the protective measures of electrical equipment and/or medical electrical equipment
    EN 61557-4:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connection and equipotential bonding
    EN 50533 : 2011 AMD 1 2016 RAILWAY APPLICATIONS - THREE-PHASE TRAIN LINE VOLTAGE CHARACTERISTICS
    EN 61557-6:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 6: Effectiveness of residual current devices (RCD) in TT, TN and IT systems

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 61557-5:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 5: Resistance to earth
    IEC 60038:2009 IEC standard voltages
    IEC 61326-2-4:2012 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-4: Particular requirements - Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61557-8 and for equipment for insulation fault location according to IEC 61557-9
    IEC 60050-601:1985 International Electrotechnical Vocabulary (IEV) - Part 601: Generation, transmission and distribution of electricity - General
    IEC 61557-10:2013 Electrical safety in low voltage distribution systems up to 1 000 v a.c. and 1 500 v d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 10: Combined measuring equipment for testing, measuring and monitoring of protective measures
    IEC 61010-2-030:2017 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-030: Particular requirements for equipment having testing or measuring circuits
    IEC 60364-1:2005 Low-voltage electrical installations - Part 1: Fundamental principles, assessment of general characteristics, definitions
    IEC 61557-2:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
    IEC 60364-6:2016 Low voltage electrical installations - Part 6: Verification
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    IEC 61326-2-2:2012 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-2: Particular requirements - Test configurations, operational conditions and performance criteria for portable test, measuring and monitoring equipment used in low-voltage distribution systems
    IEC 60359:2001 Electrical and electronic measurement equipment - Expression of performance
    IEC 60050-826:2004 International Electrotechnical Vocabulary (IEV) - Part 826: Electrical installations
    IEC 61557-4:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connection and equipotential bonding
    IEC 61557-9:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems
    IEC 61557-7:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence
    IEC 61557-8:2014 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems
    IEC 61557-6:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 6: Effectiveness of residual current devices (RCD) in TT, TN and IT systems
    IEC 61010-1:2010+AMD1:2016 CSV Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements
    IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
    IEC 60050-300:2001 International Electrotechnical Vocabulary (IEV) - Part 300: Electrical and electronic measurements and measuring instruments - Part 311: General terms relating to measurements - Part 312: General terms relating to electrical measurements - Part 313: Types of electrical measuring instruments - Part 314: Specific terms according to the type of instrument
    IEC 61557-3:2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance
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