• IEC 60050-446:1983

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    International Electrotechnical Vocabulary (IEV) - Part 446: Electrical relays

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

    Superseded date:  29-06-2010

    Language(s):  English - French

    Published date:  01-01-1983

    Publisher:  International Electrotechnical Committee

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

    FOREWORD
    PREFACE
    Section
    11 General terms
    12 Terms relating to energization (input and auxiliary)
    13 Terms relating to conditions and operation of a relay
    14 Terms relating to influencing quantities or factors
    15 Terms relating to measuring relays
    16 Terms relating to outputs of the relays (with or
       without contact)
    17 Terms relating to times
    18 Terms relating to accuracy applicable to a given
       relay (measuring relay and specified-time relay)
    Index

    Abstract - (Show below) - (Hide below)

    It has the status of a horizontal standard in accordance with IEC Guide 108.

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

    Committee TC 1
    Development Note Supersedes IEC 60050-16 (02/2001)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By
    Supersedes

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

    EN 50123-7-3:2003 Railway applications - Fixed installations - D.C. switchgear - Part 7-3: Measurement, control and protection devices for specific use in d.c. traction systems - Isolating voltage transducers and other voltage measuring devices
    15/30314792 DC : 0 BS EN 50152-3-2 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE CURRENT TRANSFORMERS
    05/30136363 DC : DRAFT JUL 2005 IEC 60255-6 ED 3 - ELECTRICAL RELAYS - PART 6: GENERAL REQUIREMENTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT
    06/30148088 DC : DRAFT MAR 2006 IEC 60255-22-3 - MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-3: ELECTRICAL DISTURBANCE TESTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT - RADIATED ELECTROMAGNETIC FIELD DISTURBANCE TESTS
    ISO 8816:1993 Aircraft Solid-state remote power controllers General requirements
    UNE-EN 50152-2:2013 Railway applications - Fixed installations - Particular requirements for alternating current switchgear - Part 2: Disconnectors, earthing switches and switches with nominal voltage above 1 kV
    I.S. EN 60255-22-2:2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-2: ELECTRICAL DISTURBANCE TESTS - ELECTROSTATIC DISCHARGE TESTS
    DIN EN 50263 : 2000
    I.S. EN 60255-22-3:2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-3: ELECTRICAL DISTURBANCE TESTS - RADIATED ELECTROMAGNETIC FIELD IMMUNITY
    BS EN 60255-22-2 : 2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-2: ELECTRICAL DISTURBANCE TESTS - ELECTROSTATIC DISCHARGE TESTS
    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 EN 60255-22-3 : 2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-3: ELECTRICAL DISTURBANCE TESTS - RADIATED ELECTROMAGNETIC FIELD IMMUNITY
    BS EN 60694 : 1997 COMMON SPECIFICATION FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    NF EN 60255 22-2 : 2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-2: ELECTRICAL DISTURBANCE TESTS - ELECTROSTATIC DISCHARGE TESTS
    15/30314795 DC : 0 BS EN 50152-3-3 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE INDUCTIVE VOLTAGE TRANSFORMERS
    PREN 50152-3-3 : DRAFT 2015 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE INDUCTIVE VOLTAGE TRANSFORMERS
    BS EN 61810-5 : 1999 ELECTROMECHANICAL NON-SPECIFIED TIME ALL-OR-NOTHING RELAYS - INSULATION COORDINATION
    BS EN 60255-22-6 : 2001 ELECTRICAL RELAYS - PART 22-6: ELECTRICAL DISTURBANCE TESTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT - IMMUNITY TO CONDUCTED DISTURBANCES INDUCED BY RADIO FREQUENCY FIELDS
    BS EN 50123-7-3 : 2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 7-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN D.C. TRACTION SYSTEMS - ISOLATING VOLTAGE TRANSDUCERS AND OTHER VOLTAGE MEASURING DEVICES
    BS G261-1(1996) : 1996 SPECIFICATION FOR AIRCRAFT - ELECTROMAGNETIC RELAYS AND CONTACTORS - GENERAL REQUIREMENTS
    BS EN 50123-7-1 : 2003 RAILWAY APPLICATIONS - D.C. SWITCHGEAR - PART 7-1: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN D.C. TRACTION SYSTEMS - APPLICATION GUIDE
    04/30111859 DC : 0 IEC 62271-1 - HIGH-VOLTAGE SWITCHGEAR AND CONTROL GEAR - PART 1: COMMON SPECIFICATIONS
    BS EN 60255-21-3 : 1995 ELECTRICAL RELAYS - PART 21-3: VIBRATION, SHOCK, BUMP AND SEISMIC TESTS ON MEASURING RELAYS AND PROTECTION EQUIPMENT - SEISMIC TESTS
    NF EN 60947-5-1 : 2004 AMD 1 2009 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 5-1: CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS - ELECTROMECHANICAL CONTROL CIRCUIT DEVICES
    I.S. EN 50123-3:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 3: INDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
    BS EN 50123-2 : 2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 2: D.C. CIRCUIT BREAKERS
    DIN EN 61810-5 : 1999 ELECTROMECHANICAL NON-SPECIFIED TIME ALL-OR-NOTHING RELAYS - PART 5: INSULATION COORDINATION
    NF EN 60255-25 : 2001 ELECTRICAL RELAYS - PART 25: ELECTROMAGNETIC EMISSION TESTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT
    DD IEC TS 61850-2 : 2003 COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS - PART 2: GLOSSARY
    BS EN 116000-3:1996 Harmonized system of quality assessment for electronic components. Generic specification: electromechanical all-or-nothing relays Test and measurement procedures
    11/30235280 DC : 0 BS EN 50152-1 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
    BS ISO 8816 : 1993 AIRCRAFT - SOLID-STATE REMOTE POWER CONTROLLERS - GENERAL REQUIREMENTS
    00/203618 DC : DRAFT AUG 2000 IEC 60255-26 - MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 26: ELECTROMAGNETIC COMPATIBILITY REQUIREMENTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT
    BS CECC17000(1992) : 1992 AMD 9626 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS - GENERIC SPECIFICATION - SOLID STATE ALL OR NOTHING RELAYS - GENERIC DATA AND METHODS OF TEST
    11/30235283 DC : 0 BS EN 50152-2 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
    CEI EN 50123-1 : 2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 1: GENERAL
    NBR 5465 : 1981 ELETROTECNICA E ELETRONICA - RELES ELETRICOS
    BS EN 60255-23 : 1997 ELECTRICAL RELAYS - PART 23: CONTACT PERFORMANCE
    IEC TS 61850-2:2003 Communication networks and systems in substations - Part 2: Glossary
    01/201955 DC : DRAFT MAR 2001 IEC 60255-22-1 ED.2.0 - MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-1: ELECTRICAL DISTURBANCE TESTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT - 1 MHZ BURST IMMUNITY TESTS
    BS EN 60255-25 : 2000 ELECTRICAL RELAYS - PART 25: ELECTROMAGNETIC EMISSION TESTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT
    BS EN 50152-3-3:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - VOLTAGE TRANSFORMERS
    BS CECC 19000(1979) : 1979 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS: GENERIC SPECIFICATION: DRY REED MAKE CONTACT UNITS
    IEC 60255-23:1994 Electrical relays - Part 23: Contact performance
    BS EN 50263 : 2000
    UNE-EN 50152-1:2013 Railway applications - Fixed installations - Particular requirements for alternating current switchgear - Part 1: Circuit-breakers with nominal voltage above 1 kV
    PREN 50152-3-2 : DRAFT 2015 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE CURRENT TRANSFORMERS
    BS EN 50152-2 : 2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
    EN 50123-7-2:2003 Railway applications - Fixed installations - D.C. switchgear - Part 7-2: Measurement, control and protection devices for specific use in d.c. traction systems - Isolating current transducers and other current measuring devices
    CSA C22.2 NO. 60947-5-1:14 (R2019) Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (Bi-national standard, with UL 60947-5-1)
    I.S. EN 50123-1:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - GENERAL
    BS EN 50123-1 : 2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 1: GENERAL
    I.S. EN 60694:1999 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    I.S. EN 50123-4:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 4: OUTDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
    I.S. EN 50152-1:2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
    NF EN 60255-22-3 : 2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-3: ELECTRICAL DISTURBANCE TESTS - RADIATED ELECTROMAGNETIC FIELD IMMUNITY
    DIN VDE 0660-200 : 1992 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR; PART 5-1: CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS; ELECTROMECHANICAL CONTROL CIRCUIT DEVICES
    PREN 50152-1 : DRAFT 2011 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
    NBR IEC 60694 : 2006 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    EN 60255-23 : 1996 ELECTRIC RELAYS - CONTACT PERFORMANCE
    I.S. EN 50152-3-2:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - SINGLE-PHASE CURRENT TRANSFORMERS
    BS EN 50123-7-2 : 2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 7-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN D.C. TRACTION SYSTEMS - ISOLATING CURRENT TRANSDUCERS AND OTHER CURRENT MEASURING DEVICES
    I.S. EN 50123-2:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - D.C. CIRCUIT BREAKERS
    BIS IS/IEC 62271-1 : 2007 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: COMMON SPECIFICATIONS
    I.S. EN 50152-3-3:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - VOLTAGE TRANSFORMERS
    PREN 50152-2 : DRAFT 2011 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
    I.S. EN 50152-2:2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
    CEI EN 50152-2 : 2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
    BS ISO 14617-2:2002 (published 2004-08) Graphical symbols for diagrams Symbols having general application
    ISO 14617-2:2002 Graphical symbols for diagrams Part 2: Symbols having general application
    BS EN 50152-1 : 2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
    IEC 61810-5:1998 Electromechanical non-specified time all-or-nothing relays - Part 5: Insulation coordination
    I.S. EN 116000-3:1998 GENERIC SPECIFICATION: ELECTROMECHANICAL ALL-OR-NOTHING RELAYS - PART 3: TEST AND MEASUREMENT PROCEDURES
    I.S. EN 50123-7-3:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 7-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN D.C. TRACTION SYSTEMS - ISOLATING VOLTAGE TRANSDUCERS AND OTHER VOLTAGE MEASURING DEVICES
    I.S. EN 60255-25:2001 ELECTRICAL RELAYS - PART 25: ELECTROMAGNETIC EMISSION TESTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT
    IEC 61992-1:2006+AMD1:2014 CSV Railway applications - Fixed installations - DC switchgear - Part 1:General
    I.S. EN 50123-7-2:2003 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 7-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN D.C. TRACTION SYSTEMS - ISOLATING CURRENT TRANSDUCERS AND OTHER CURRENT MEASURING DEVICES
    UNE-EN 50152-3-2:2016 Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-2: Measurement, control and protection devices for specific use in a.c. traction systems - Current transformers
    IEC 60139:2000 Preparation of outline drawings for cathode-ray tubes, their components, connections and gauges
    IEC 60694:1996+AMD1:2000+AMD2:2001 CSV Common specifications for high-voltage switchgear and controlgear standards
    UNE-EN 50152-3-3:2016 Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-3: Measurement, control and protection devices for specific use in a.c. traction systems - Voltage transformers
    IEC 61747-1:1998+AMD1:2003 CSV Liquid crystal and solid-state display devices - Part 1: Generic specification
    IEC 60255-22-2:2008 Measuring relays and protection equipment - Part 22-2: Electrical disturbance tests - Electrostatic discharge tests
    IEC 60255-22-3:2007 Measuring relays and protection equipment - Part 22-3: Electrical disturbance tests - Radiated electromagnetic field immunity
    IEC 60255-22-6:2001 Electrical relays - Part 22-6: Electrical disturbance tests for measuring relays and protection equipment - Immunity to conducted disturbances induced by radio frequency fields
    IEC 60255-25:2000 Electrical relays - Part 25: Electromagnetic emission tests for measuring relays and protection equipment
    UL 60947-5-1 : 3ED 2014 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 5-1: CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS - ELECTROMECHANICAL CONTROL CIRCUIT DEVICES
    EN 60694:1996/A2:2001 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    EN 60255-22-6 : 2001 ELECTRICAL RELAYS - PART 22-6: ELECTRICAL DISTURBANCE TESTS FOR MEASURING RELAYS AND PROTECTION EQUIPMENT - IMMUNITY TO CONDUCTED DISTURBANCES INDUCED BY RADIO FREQUENCY FIELDS
    EN 50152-3-3:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-3: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - VOLTAGE TRANSFORMERS
    EN 50152-3-2 : 2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR A.C. SWITCHGEAR - PART 3-2: MEASUREMENT, CONTROL AND PROTECTION DEVICES FOR SPECIFIC USE IN A.C. TRACTION SYSTEMS - CURRENT TRANSFORMERS
    EN 61810-5 : 1998 ELECTROMECHANICAL NON-SPECIFIED TIME ALL-OR-NOTHING RELAYS - INSULATION COORDINATION
    EN 50152-2:2012 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 2: DISCONNECTORS, EARTHING SWITCHES AND SWITCHES WITH NOMINAL VOLTAGE ABOVE 1 KV
    EN 50123-1:2003 Railway applications - Fixed installations - D.C. switchgear - Part 1: General
    EN 50123-7-1:2003 Railway applications - Fixed installations - D.C. switchgear - Part 7-1: Measurement, control and protection devices for specific use in d.c. traction systems - Application guide
    EN 50123-4:2003/A1:2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 4: OUTDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
    EN 50123-2:2003 Railway applications - Fixed installations - D.C. switchgear - Part 2: D.C. circuit breakers
    EN 60255-22-3:2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-3: ELECTRICAL DISTURBANCE TESTS - RADIATED ELECTROMAGNETIC FIELD IMMUNITY
    EN 50263 : 1999 Electromagnetic compatibility (EMC) - Product standard for measuring relays and protection equipment
    EN 50152-1 : 2012 AMD 1 2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PARTICULAR REQUIREMENTS FOR ALTERNATING CURRENT SWITCHGEAR - PART 1: CIRCUIT-BREAKERS WITH NOMINAL VOLTAGE ABOVE 1 KV
    EN 116000-3 : 1996 GENERIC SPECIFICATION: ELECTROMECHANICAL ALL-OR-NOTHING RELAYS - PART 3: TEST AND MEASUREMENT PROCEDURES
    EN 60139 : 2001 PREPARATION OF OUTLINE DRAWINGS FOR CATHODE-RAY TUBES, THEIR COMPONENTS, CONNECTIONS AND GAUGES
    EN 50123-3:2003/A1:2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - D.C. SWITCHGEAR - PART 3: INDOOR D.C. DISCONNECTORS, SWITCH-DISCONNECTORS AND EARTHING SWITCHES
    EN 60255-22-2:2008 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 22-2: ELECTRICAL DISTURBANCE TESTS - ELECTROSTATIC DISCHARGE TESTS
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