• EN 60721-1:1995/A2:1995

    Current The latest, up-to-date edition.

    CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 1: ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES

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    Published date:  17-07-1995

    Publisher:  European Committee for Standards - Electrical

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

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Definitions
    4 Environmental factors and parameters
    Annex ZA (Normative) - Normative references to
             international publications with their
             corresponding European publications

    Abstract - (Show below) - (Hide below)

    Specifies environmental parameters and a limited number of their severities within the range of conditions met by electrotechnical products when being transported, stored, installed and used.

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

    Committee SR 104
    Development Note Supersedes HD 478.1. (05/2001)
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Current
    Supersedes

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

    I.S. EN 60721-2-2:2013 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-2: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - PRECIPITATION AND WIND (IEC 60721-2-2:2012 (EQV))
    04/30116340 DC : DRAFT JUL 2004 EN TR 50126-3 - RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 3: GUIDE TO THE APPLICATION OF EN 50126-1 FOR ROLLING STOCK RAMS
    CEI EN 60721-3-5 : 1998 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - SECTION 5: GROUND VEHICLE INSTALLATIONS
    I.S. EN 60721-3-5:1999 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - SECTION 5: GROUND VEHICLE INSTALLATIONS
    BS EN 60721-3-2:1997 Classification of environmental conditions. Classification of groups of environmental parameters and their severities Transportation
    CEI EN 60068-5-2 : 2000 ENVIRONMENTAL TESTING - PART 5: GUIDE TO DRAFTING OF TEST METHODS TERMS AND DEFINITIONS
    BS EN 60721-3-5 : 1997 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - PART 3-5: GROUND VEHICLE INSTALLATIONS
    I.S. EN 61427:2005 SECONDARY CELLS AND BATTERIES FOR PHOTOVOLTAIC ENERGY SYSTEMS (PVES) - GENERAL REQUIREMENTS AND METHODS OF TEST
    I.S. EN 62271-212:2017 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 212: COMPACT EQUIPMENT ASSEMBLY FOR DISTRIBUTION SUBSTATION (CEADS)
    I.S. EN IEC 60721-3-1:2018 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3-1: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - STORAGE
    UNE-EN 62271-212:2017 High-voltage switchgear and controlgear - Part 212: Compact Equipment Assembly for Distribution Substation (CEADS)
    EN 60794-2-41 : 2008 OPTICAL FIBRE CABLES - PART 2-41: INDOOR CABLES - PRODUCT SPECIFICATION FOR SIMPLEX AND DUPLEX BUFFERED A4 FIBRES
    HD 637 S1:1999/corrigendum:2005 POWER INSTALLATIONS EXCEEDING 1 KV A.C.
    EN 62271-212:2017 High-voltage switchgear and controlgear - Part 212: Compact Equipment Assembly for Distribution Substation (CEADS)
    EN 62271-202:2014/AC:2014 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 202: HIGH-VOLTAGE/LOW-VOLTAGE PREFABRICATED SUBSTATION (IEC 62271-202:2014)
    EN 60721-3-5 : 1997 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - SECTION 5: GROUND VEHICLE INSTALLATIONS
    EN 61427:2005 SECONDARY CELLS AND BATTERIES FOR PHOTOVOLTAIC ENERGY SYSTEMS (PVES) - GENERAL REQUIREMENTS AND METHODS OF TEST
    02/205172 DC : DRAFT JUN 2002 IEC 62104. ED.2.0 - CHARACTERISTICS OF DAB (DIGITAL AUDIO BROADCAST) RECEIVERS
    CEI EN 60794-3-30 : 2010 OPTICAL FIBRE CABLES - PART 3-30: OUTDOOR CABLES - FAMILY SPECIFICATION FOR OPTICAL TELECOMMUNICATION CABLES FOR LAKES, RIVER CROSSINGS AND COASTAL APPLICATION
    CEI EN 62217 : 2013 POLYMERIC HV INSULATORS FOR INDOOR AND OUTDOOR USE - GENERAL DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    BS EN 60044-1 : 1999 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
    BS 7527-2-3(2014) : 2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-3: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - AIR PRESSURE
    BS EN 60721-2-1 : 2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-1: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - TEMPERATURE AND HUMIDITY
    BS EN 50173-1:2011 INFORMATION TECHNOLOGY - GENERIC CABLING SYSTEMS - PART 1: GENERAL REQUIREMENTS
    BS EN 50125-1 : 2014 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: ROLLING STOCK AND ON-BOARD EQUIPMENT
    UNE-EN 50125-1:2014 Railway applications - Environmental conditions for equipment - Part 1: Rolling stock and on-board equipment
    BS PD CLC/TR 50126-3 : 2008 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 3: GUIDE TO THE APPLICATION OF EN 50126-1 FOR ROLLING STOCK RAMS
    12/30235267 DC : 0 BS EN 50125-1 - RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: EQUIPMENT ON BOARD ROLLING STOCK
    CEI EN 50173-1 : 2011 INFORMATION TECHNOLOGY - GENERIC CABLING SYSTEMS - PART 1: GENERAL REQUIREMENTS
    CEI EN 62104 : 2009 CHARACTERISTICS OF DAB RECEIVERS
    DIN EN 60654-3:1998-08 OPERATING CONDITIONS FOR INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL EQUIPMENT - PART 3: MECHANICAL INFLUENCES
    CLC/TR 50126-3:2008 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 3: GUIDE TO THE APPLICATION OF EN 50126-1 FOR ROLLING STOCK RAM
    I.S. EN 62146-1:2014 GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS - PART 1: GENERAL
    I.S. EN 62271-202:2014 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 202: HIGH-VOLTAGE/LOW-VOLTAGE PREFABRICATED SUBSTATION
    EN 50173-1:2011 INFORMATION TECHNOLOGY - GENERIC CABLING SYSTEMS - PART 1: GENERAL REQUIREMENTS
    I.S. EN 50173-1:2011 INFORMATION TECHNOLOGY - GENERIC CABLING SYSTEMS - PART 1: GENERAL REQUIREMENTS
    CEI R009-003 : 2000 RAILWAY APPLICATIONS GUIDE TO THE SPECIFICATION OF A GUIDED TRANSPORT SYSTEM
    BS EN 60721-2-3:2014 (published 2014-08) Classification of environmental conditions Environmental conditions appearing in nature. Air pressure
    CEI EN 60721-3-1 : 1998 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3-1: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - SECTION 1: STORAGE
    BS EN 60794-2-42 : 2008 OPTICAL FIBRE CABLES - PART 2-42: INDOOR OPTICAL FIBRE CABLES - PRODUCT SPECIFICATION FOR SIMPLEX AND DUPLEX CABLES WITH A4 FIBRES
    I.S. EN 60721-2-1:2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-1: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - TEMPERATURE AND HUMIDITY
    BS EN 62217:2013 (published 2013-04) Polymeric HV insulators for indoor and outdoor use. General definitions, test methods and acceptance criteria
    BS PD6580-2(1995) : 1995 HOME AND BUILDING ELECTRONIC SYSTEMS - TECHNICAL REPORT 1: GUIDELINES FOR THE PROFESSIONAL INSTALLATION OF TWISTED PAIR CABLES CLASS 1
    BS PD R009-003 : 1999 RAILWAY APPLICATIONS - GUIDE TO THE SPECIFICATION OF A GUIDED TRANSPORT SYSTEM
    BS EN 62146-1 : 2014 GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS - PART 1: GENERAL (IEC 62146-1:2013)
    I.S. EN 60068-2-75:2014 ENVIRONMENTAL TESTING - PART 2-75: TESTS - TEST EH: HAMMER TESTS
    S.R. CLC/TR 50126-3:2008 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 3: GUIDE TO THE APPLICATION OF EN 50126-1 FOR ROLLING STOCK RAM
    EN IEC 60721-3-2:2018 (edition 3) Classification of environmental conditions - Part 3-2: Classification of groups of environmental parameters and their severities - Transportation and Handling
    BS EN 62104 : 2007 CHARACTERISTICS OF DAB RECEIVERS
    CEI EN 50125-1 : 2014 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: ROLLING STOCK AND ON-BOARD EQUIPMENT
    I.S. EN 60721-2-3:2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-3: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - AIR PRESSURE
    CEI EN 60721-3-2 : 1998 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS PART 3-2: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - SECTION 2: TRANSPORTATION
    CEI CLC/TR 50126-3 : 2009 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 3: GUIDE TO THE APPLICATION OF EN 50126-1 FOR ROLLING STOCK RAM
    I.S. EN 60721-3-1:1999 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - STORAGE
    UNE-EN 50491-2:2011 General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) -- Part 2: Environmental conditions
    UNE-EN 62271-202:2015 High-voltage switchgear and controlgear - Part 202: High-voltage/low-voltage prefabricated substation
    EN 301 502 : 12.1.1 GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS (GSM); BASE STATION (BS) EQUIPMENT; HARMONISED STANDARD COVERING THE ESSENTIAL REQUIREMENTS OF ARTICLE 3.2 OF DIRECTIVE 2014/53/EU
    EN 50532:2010 Compact Equipment Assembly for Distribution Substations (CEADS)
    I.S. EN 62104:2007 CHARACTERISTICS OF DAB RECEIVERS
    BS EN 60044-2 : 1999 INSTRUMENT TRANSFORMERS - PART 2: INDUCTIVE VOLTAGE TRANSFORMERS
    CEI EN 60794-2-42 : 2009 OPTICAL FIBRE CABLES - PART 2-42: INDOOR OPTICAL FIBRE CABLES - PRODUCT SPECIFICATION FOR SIMPLEX AND DUPLEX CABLES WITH A4 FIBRES
    CEI EN 60721-2-2 : 2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-2: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - PRECIPITATION AND WIND
    BS EN 60044-7 : 2000 INSTRUMENT TRANSFORMERS - PART 7 - ELECTRONIC VOLTAGE TRANSFORMERS
    I.S. EN 50532:2010 COMPACT EQUIPMENT ASSEMBLY FOR DISTRIBUTION SUBSTATIONS (CEADS)
    EN 62104 : 2007 CHARACTERISTICS OF DAB RECEIVERS
    BS EN 60068-2-75:2014 Environmental testing Tests. Test Eh: Hammer tests
    BS EN 60721-3-1 : 1997 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - PART 3-1: STORAGE
    I.S. EN 62217:2013 POLYMERIC HV INSULATORS FOR INDOOR AND OUTDOOR USE - GENERAL DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA (IEC 62217:2012 (EQV))
    EN IEC 60721-3-1 : 2018 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3-1: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - STORAGE (IEC 60721-3-1:2018)
    I.S. CLC TR 50126-3:2006 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 3: GUIDE TO THE APPLICATION OF EN 50126-1 FOR ROLLING STOCK RAMS
    I.S. EN 50125-1:2014 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: ROLLING STOCK AND ON-BOARD EQUIPMENT
    BS EN 62271-212:2017 High-voltage switchgear and controlgear Compact Equipment Assembly for Distribution Substation (CEADS)
    BS EN 50532:2010 Compact equipment assembly for distribution substations (CEADS)
    09/30202403 DC : 0 BS EN 50532 - COMPACT EQUIPMENT ASSEMBLY FOR DISTRIBUTION SUBSTATIONS (CEADS)
    08/30160532 DC : DRAFT MAY 2008 BS EN 50122-1 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRICAL SAFETY, EARTHING AND BONDING - PART 1: PROTECTIVE PROVISIONS AGAINST ELECTRIC SHOCK
    UNE-EN 50532:2011 Compact Equipment Assembly for Distribution Substations (CEADS)
    BS EN 50491-2 : 2010 GENERAL REQUIREMENTS FOR HOME AND BUILDING ELECTRONIC SYSTEMS (HBES) AND BUILDING AUTOMATION AND CONTROL SYSTEMS (BACS) - PART 2: ENVIRONMENTAL CONDITIONS
    EN 60068-2-75:2014 ENVIRONMENTAL TESTING - PART 2-75: TESTS - TEST EH: HAMMER TESTS (IEC 60068-2-75:2014)
    BS EN 60068-5-2 : 2000 ENVIRONMENTAL TESTING - PART 5-2: GUIDE TO DRAFTING OF TEST METHODS - TERMS AND DEFINITIONS
    BS EN 60721-2-2 : 2013 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-2: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - PRECIPITATION AND WIND
    I.S. EN 50491-2:2010 GENERAL REQUIREMENTS FOR HOME AND BUILDING ELECTRONIC SYSTEMS (HBES) AND BUILDING AUTOMATION AND CONTROL SYSTEMS (BACS) - PART 2: ENVIRONMENTAL CONDITIONS
    CEI EN 61969-1 : 2012 MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT - OUTDOOR ENCLOSURES - PART 1: DESIGN GUIDELINES
    UNE-EN 62217:2013 Polymeric HV insulators for indoor and outdoor use - General definitions, test methods and acceptance criteria
    BS EN 60721-2-9 : 2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-9: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - MEASURED SHOCK AND VIBRATION DATA - STORAGE, TRANSPORTATION AND IN-USE
    I.S. EN 60794-2-42:2008 OPTICAL FIBRE CABLES - PART 2-42: INDOOR OPTICAL FIBRE CABLES - PRODUCT SPECIFICATION FOR SIMPLEX AND DUPLEX CABLES WITH A4 FIBRES
    PREN 50125-1 : DRAFT 2012 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: EQUIPMENT ON BOARD ROLLING STOCK
    BS EN 60794-3-30 : 2008 OPTICAL FIBRES - PART 3-30: OUTDOOR CABLES - FAMILY SPECIFICATION FOR OPTICAL TELECOMMUNICATION CABLES FOR LAKES, RIVER CROSSINGS AND COASTAL APPLICATION
    BS 7527-2-1(2014) : 2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-1: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - TEMPERATURE AND HUMIDITY
    BS EN 61427 : 2005 SECONDARY CELLS AND BATTERIES FOR PHOTOVOLTAIC ENERGY SYSTEMS (PVES) - GENERAL REQUIREMENTS AND METHODS OF TEST
    BS EN 60794-2-41 : 2008 OPTICAL FIBRE CABLES - PART 2-41: INDOOR CABLES - PRODUCT SPECIFICATION FOR SIMPLEX AND DUPLEX BUFFERED A4 FIBRES
    I.S. EN IEC 60721-3-2:2018 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3-2: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - TRANSPORTATION AND HANDLING
    I.S. HD 637:1999 POWER INSTALLATIONS EXCEEDING 1 KV A.C.
    BS EN 45510-2-2 : 1999 GUIDE FOR THE PROCUREMENT OF POWER STATION EQUIPMENT - ELECTRICAL EQUIPMENT - UNINTERRUPTIBLE POWER SUPPLIES
    BS EN 62271-202:2014 High-voltage switchgear and controlgear High-voltage/low-voltage prefabricated substation
    EN 60721-2-3 : 2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-3: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - AIR PRESSURE (IEC 60721-2-3:2013)
    EN 60721-2-2 : 2013 Classification of environmental conditions - Part 2-2: Environmental conditions appearing in nature - Precipitation and wind
    EN 60044-1:1999/A2:2003 INSTRUMENT TRANSFORMERS - PART 1: CURRENT TRANSFORMERS
    EN 62146-1:2014/A1:2016 GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS - PART 1: GENERAL (IEC 62146-1:2013/A1:2016)
    EN 60721-2-9 : 2014 Classification of environmental conditions - Part 2-9: Environmental conditions appearing in nature - Measured shock and vibration data - Storage, transportation and in-use
    EN 60794-3-30:2008 OPTICAL FIBRE CABLES - PART 3-30: OUTDOOR CABLES - FAMILY SPECIFICATION FOR OPTICAL TELECOMMUNICATION CABLES FOR LAKES, RIVER CROSSINGS AND COASTAL APPLICATION
    EN 50125-1:2014 RAILWAY APPLICATIONS - ENVIRONMENTAL CONDITIONS FOR EQUIPMENT - PART 1: ROLLING STOCK AND ON-BOARD EQUIPMENT
    EN 60794-2-42:2008 OPTICAL FIBRE CABLES - PART 2-42: INDOOR OPTICAL FIBRE CABLES - PRODUCT SPECIFICATION FOR SIMPLEX AND DUPLEX CABLES WITH A4 FIBRES
    EN 60721-2-1 : 2014 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 2-1: ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - TEMPERATURE AND HUMIDITY (IEC 60721-2-1:2013)
    EN 62217:2013 POLYMERIC HV INSULATORS FOR INDOOR AND OUTDOOR USE - GENERAL DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA (IEC 62217:2012)
    EN 50491-2 : 2010 AMD 1 2015 GENERAL REQUIREMENTS FOR HOME AND BUILDING ELECTRONIC SYSTEMS (HBES) AND BUILDING AUTOMATION AND CONTROL SYSTEMS (BACS) - PART 2: ENVIRONMENTAL CONDITIONS
    EN 60044-2:1999/A2:2003 INSTRUMENT TRANSFORMERS - PART 2: INDUCTIVE VOLTAGE TRANSFORMERS
    EN 60721-3-1:1997 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - STORAGE

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

    HD 478.2.2 : 200S1 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - ENVIRONMENTAL CONDITIONS APPEARING IN NATURE - PRECIPITATION AND WIND
    IEC 60068-2-27:2008 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
    IEC 60721-2-2:2012 Classification of environmental conditions - Part 2-2: Environmental conditions appearing in nature - Precipitation and wind
    EN 60068-2-27:2009 ENVIRONMENTAL TESTING - PART 2-27: TESTS - TEST EA AND GUIDANCE: SHOCK
    ISO 2041:2009 Mechanical vibration, shock and condition monitoring Vocabulary
    IEC 60079-0:2011 Explosive atmospheres - Part 0: Equipment - General requirements
    IEC 60721-3-6:1987 Classification of environmental conditions. Part 3: Classification of groups of environmental parameters and their severities. Ship environment
    EN 60721-3-6:1993/A2:1997 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - SHIP ENVIRONMENT
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