• BS EN 60068-2-2:2007 (published 2007-10)

    Current The latest, up-to-date edition.

    Environmental testing Tests. Test B. Dry heat

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-10-2007

    Publisher:  British Standards Institution

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

    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Application of tests for non heat-dissipating
      specimens versus tests for heat-dissipating
      specimens
      4.1 General
      4.2 Ascertaining high or low air velocity in
           the test chamber
      4.3 Application of tests with sudden change
           of temperature versus tests with gradual
           change of temperature
      4.4 Testing of heat-dissipating specimens
      4.5 Temperature monitoring
      4.6 Packaging
      4.7 Diagrammatic representations
    5 Test descriptions
      5.1 General
      5.2 Test Bb: Dry heat for non heat-dissipating
           specimens with gradual change of temperature
           5.2.1 Object
           5.2.2 General description
      5.3 Test Bd: Dry heat for heat-dissipating
           specimens with gradual change of temperature
           that are not powered during the conditioning
           period
           5.3.1 Object
           5.3.2 General description
           5.3.3 Energising the specimen
      5.4 Test Be: Dry heat for heat-dissipating specimens
           with gradual change of temperature that are
           required to be powered throughout the test
           5.4.1 Object
           5.4.2 General description
    6 Test procedure
      6.1 Confirmation of performance
      6.2 Working space
      6.3 Thermal radiation
      6.4 Mounting
      6.5 Severities
           6.5.1 General
           6.5.2 Temperature
           6.5.3 Duration
      6.6 Preconditioning
      6.7 Initial measurements
      6.8 Conditioning
           6.8.1 Steady state conditions
           6.8.2 Absolute humidity
      6.9 Intermediate measurements
      6.10 Final temperature ramp
      6.11 Recovery
      6.12 Specimen with artificial cooling
      6.13 Final measurements
    7 Information to be given in the relevant specification
    8 Information to be given in the test report
    Annex ZA (normative) - Normative references to
             international publications with their
             corresponding European publications

    Abstract - (Show below) - (Hide below)

    Deals with dry heat tests applicable both to heat-dissipating and non heat-dissipating specimens. For non heat-dissipating specimens, Tests Bb and Bd do not deviate essentially from earlier issues.

    Scope - (Show below) - (Hide below)

    IEC 60068-2-2:2007 Deals with dry heat tests applicable both to heat-dissipating and non heat-dissipating specimens. For non heat-dissipating specimens, Tests Bb and Bd do not deviate essentially from earlier issues. The object of the dry heat test is limited to the determination of the ability of components, equipment or other articles to be used, transported or stored at high temperature. These dry heat tests do not enable the ability of specimens to withstand or operate during the temperature variations to be assessed. In this case, it would be necessary to use IEC 60068-2-14 Test N: Change of temperature. The dry heat tests are subdivided as follows:
    - Dry heat test for non heat-dissipating specimens with gradual change of temperature, Bb.
    - Dry heat tests for heat-dissipating specimens with gradual change of temperature, Bd;
    with gradual change of temperature, specimen powered throughout, Be. The procedures given in this standard are normally intended for specimens that achieve temperature stability during the performance of the test procedure. The main changes from the previous edition are as follows: Tests Ba and Bc have been deleted since they were more severe tests than Test Nb, IEC 60068-2-14: Change of temperature. Secondly it was considered justified to delete the 3 % value on the temperature difference between the chamber air and the wall temperatures. Thirdly it is proposed that the test specimen be powered throughout the test where required; and, finally, the annexes have been removed. It has the status of a horizontal standard in accordance with IEC Guide 104

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

    Committee GEL/104
    Development Note Supersedes 76/26716 DC, 93/209324 DC and BS 2011-2.1B(1977). (04/2005) Supersedes 02/203356 DC. (11/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

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

    BS QC222000(1996) : 1996 RADIO-FREQUENCY CONNECTORS - RF COAXIAL CONNECTORS WITH INNER DIAMETER OF OUTER CONDUCTOR 6,5 MM (0,256 IN) WITH SCREW COUPLING - CHARACTERISTIC IMPEDANCE 50 OHMS - (TYPE TNC)
    BS 8431(2010) : 2010 ELECTRICAL STATIC METERS FOR SECONDARY METERING AND SUB-METERING - SPECIFICATION
    BS EN 119000 : 1997 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS - GENERIC SPECIFICATION: DRY AND MERCURY WETTED REED CONTACT UNITS
    BS EN 116000-3:1996 Harmonized system of quality assessment for electronic components. Generic specification: electromechanical all-or-nothing relays Test and measurement procedures
    BS 5760-13.5:1996 RELIABILITY OF SYSTEMS, EQUIPMENT AND COMPONENTS - GUIDE TO RELIABILITY TEST CONDITIONS FOR CONSUMER EQUIPMENT - GROUND MOBILE EQUIPMENT - LOW DEGREE OF SIMULATION
    BS QC221300(1997) : 1997 RADIO-FREQUENCY CONNECTORS - RF COAXIAL CONNECTORS WITH INNER DIAMETER OF OUTER CONDUCTOR 3 MM (0,12 IN) WITH SNAP-ON COUPLING - CHARACTERISTIC IMPEDANCE 50 OHMS (TYPE SMB)
    BS PAS 019(1997) : 1997
    BS EN 129000 : 1996 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS - GENERIC SPECIFICATION - FIXED RF WOUND INDUCTORS
    BS 123400-003(2001) : 2001 SYSTEM OF QUALITY ASSESSMENT - CAPABILITY DETAIL SPECIFICATION - FLEXIBLE SINGLE-SIDED AND DOUBLE-SIDED PRINTED BOARDS WITHOUT THROUGH-CONNECTIONS
    BS QC221200(1997) : 1997 RADIO-FREQUENCY CONNECTORS - RF COAXIAL CONNECTORS WITH INNER DIAMETER OF OUTER CONDUCTOR 6,5 MM (0,256 IN) WITH BAYONET LOCK - CHARACTERISTIC IMPEDANCE 50 OHMS (TYPE BNC)
    BS EN 60068-2-61 : 1994 ENVIRONMENTAL TESTING - TEST METHODS - TEST Z/ABDM: CLIMATIC SEQUENCE
    BS EN 137000 : 1996 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS: GENERIC SPECIFICATION: FIXED ALUMINIUM ELECTROLYTIC A.C. CAPACITORS WITH NON-SOLID ELECTROLYTE FOR USE WITH MOTORS
    BS DD8431(2005) : 2005 ELECTRICAL STATIC METERS FOR SECONDARY METERING AND SUB-METERING - SPECIFICATION
    BS EN 61249-8-7 : 1997 MATERIALS FOR INTERCONNECTION STRUCTURES - SECTIONAL SPECIFICATION SET FOR NON-CONDUCTIVE FILMS AND COATINGS - MARKING LEGEND INKS
    BS QC221400(1997) : 1997 RADIO-FREQUENCY CONNECTORS - RF COAXIAL CONNECTORS WITH INNER DIAMETER OF OUTER CONDUCTOR 3 MM (0,12 IN) WITH SCREW COUPLING - CHARACTERISTIC IMPEDANCE 50 OHMS (TYPE SMC)
    BS EN 50148:1996 Electronic taximeters
    BS 3041-7(1996) : 1996 RADIO-FREQUENCY CONNECTORS - R.F - COAXIAL CONNECTORS WITH INNER DIAMETER OF OUTPUT CONDUCTOR 9,5 MM (0,374 IN) WITH BAYONET LOCK - CHARACTERISTIC IMPEDANCE 50 OHMS (TYPE C)
    BS 5760-13.3(1993) : 1993 RELIABILITY OF SYSTEMS, EQUIPMENT AND COMPONENTS - GUIDE TO RELIABILITY TEST CONDITIONS FOR CONSUMER EQUIPMENT - CONDITIONS PROVIDING A LOW DEGREE OF SIMULATION FOR EQUIPMENT FOR STATIONARY USE IN PARTIALLY WEATHER PROTECTED LOCATIONS
    BS QC222400(1997) : 1997 RADIO-FREQUENCY CONNECTORS - RF COAXIAL CONNECTORS WITH INNER DIAMETER OF OUTER CONDUCTOR 5,6 MM (0,22 IN) - CHARACTERISTIC IMPEDANCE 75 OHMS (TYPE 1,6/5,6) - CHARACTERISTIC IMPEDANCE 50 OHMS (TYPE 1,8/5,6) WITH SIMILAR MATING DIMENSIONS
    DEFSTAN 22-48/3(2010) : 2010 SPECIFICATION FOR POSITIVE TEMPERATURE COEFFICIENT THERMISTORS FOR THERMAL PROTECTION OF ELECTRIC MOTORS
    BS 5760-13.2:1993 RELIABILITY OF SYSTEMS, EQUIPMENT AND COMPONENTS - GUIDE TO RELIABILITY TEST CONDITIONS FOR CONSUMER EQUIPMENT - CONDITIONS PROVIDING A HIGH DEGREE OF SIMULATION FOR EQUIPMENT FOR STATIONARY USE IN WEATHERPROTECTED LOCATIONS
    BS 5760-13.4:1993 RELIABILITY OF SYSTEMS, EQUIPMENT AND COMPONENTS - GUIDE TO RELIABILITY TEST CONDITIONS FOR CONSUMER EQUIPMENT - CONDITIONS PROVIDING A LOW DEGREE OF SIMULATION FOR EQUIPMENT FOR PORTABLE AND NON-STATIONARY USE
    BS 7922(2004) : 2004 ELECTRIC CABLES - FLUID-FILLED, PAPER- AND PPL-INSULATED, METAL-SHEATHED CABLES AND ACCESSORIES FOR ALTERNATING VOLTAGES UP TO AND INCLUDING 400 KV (U[M] = 420 KV) - REQUIREMENTS AND TEST METHODS
    BS 123500-003(2001) : 2001 SYSTEM OF QUALITY ASSESSMENT - CAPABILITY DETAIL SPECIFICATION - FLEXIBLE SINGLE-SIDED AND DOUBLE-SIDED PRINTED BOARDS WITH THROUGH-CONNECTIONS
    BS EN 61249-5-4 : 1997 MATERIALS FOR INTERCONNECTION STRUCTURES - SECTIONAL SPECIFICATION SET FOR CONDUCTIVE FOILS AND FILMS WITH OR WITHOUT COATINGS - CONDUCTIVE INKS
    BS EN 60742 : 1996 ISOLATING TRANSFORMERS AND SAFETY ISOLATING TRANSFORMERS - REQUIREMENTS
    BS EN 134000 : 1995 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS - GENERIC SPECIFICATION: VARIABLE CAPACITORS - (QUALIFICATION APPROVAL AND CAPABILITY APPROVAL)
    BS EN 61268 : 1996 ALTERNATING CURRENT STATIC VAR-HOUR METERS FOR REACTIVE ENERGY (CLASSES 2 AND 3)
    BS 5760-13.1(1993) : 1993 RELIABILITY OF SYSTEMS, EQUIPMENT AND COMPONENTS - GUIDE TO RELIABILITY TEST CONDITIONS FOR CONSUMER EQUIPMENT - CONDITIONS PROVIDING A LOW DEGREE OF SIMULATION FOR INDOOR PORTABLE EQUIPMENT
    BS EN 60491 : 1997 SAFETY REQUIREMENTS FOR ELECTRONIC FLASH APPARATUS FOR PHOTOGRAPHIC PURPOSES
    BS 6312-2.2:1997 Connectors for analogue telecommunication interfaces Sockets for use with plugs specified in BS 6312-1 - Particular requirements for fixed socket-outlets used in permanent wiring installations
    EN 60742 : 1995 ISOLATING TRANSFORMERS AND SAFETY ISOLATING TRANSFORMERS - REQUIREMENTS

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

    EN 60068-3-1:2011 ENVIRONMENTAL TESTING - PART 3-1: SUPPORTING DOCUMENTATION AND GUIDANCE - COLD AND DRY HEAT TESTS (IEC 60068-3-1:2011)
    IEC 60068-1:2013 Environmental testing - Part 1: General and guidance
    IEC 60068-5-2:1990 Environmental testing - Part 5-2: Guide to drafting of test methods - Terms and definitions
    IEC 60068-3-1:2011 Environmental testing - Part 3-1: Supporting documentation and guidance - Cold and dry heat tests
    EN 60068-1:2014 ENVIRONMENTAL TESTING - PART 1: GENERAL AND GUIDANCE (IEC 60068-1:2013)
    EN 60068-3-5 : 2002 ENVIRONMENTAL TESTING - PART 3-5: SUPPORTING DOCUMENTATION AND GUIDANCE - CONFIRMATION OF THE PERFORMANCE OF TEMPERATURE CHAMBERS
    EN 60068-3-7 : 2002 ENVIRONMENTAL TESTING - PART 3-7: SUPPORTING DOCUMENTATION AND GUIDANCE - MEASUREMENTS IN TEMPERATURE CHAMBERS FOR TESTS A AND B (WITH LOAD)
    IEC 60068-3-5:2001 Environmental testing - Part 3-5: Supporting documentation and guidance - Confirmation of the performance of temperature chambers
    IEC 60068-3-7:2001 Environmental testing - Part 3-7: Supporting documentation and guidance - Measurements in temperature chambers for tests A and B (with load)
    EN 60068-5-2 : 1999 ENVIRONMENTAL TESTING - PART 5-2: GUIDE TO DRAFTING OF TEST METHODS - TERMS AND DEFINITIONS
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