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  • BS 171-1:1978

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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

    Available format(s):  Hardcopy, PDF

    Superseded date:  15-09-1997

    Language(s):  English

    Published date:  01-01-1978

    Publisher:  British Standards Institution

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

    Foreword
    Cooperating organizations
    Clause
    1 Scope
    2 Service conditions
    3 Definitions
    4 Rating
    5 Rating plates
    6 Miscellaneous requirements
    7 Tolerances
    8 Tests
    8.1 General requirements for type, routine and special
         tests
    8.2 Measurement of winding resistance
    8.3 Measurement of voltage ratio and check of voltage
         vector relationship
    8.4 Measurement of impedance voltage (principal
         tapping), short-circuit impedance and load loss
    8.5 Measurement of no-load loss and current
    8.6 Measurement of the harmonics of the no-load
         current
    8.7 Measurement of zero-sequence impedance(s) on
         three-phase transformers
    8.8 Test on on-load tap-changers
    Appendix A Information required with enquiry and order

    Abstract - (Show below) - (Hide below)

    Describes power transformers with the exception of certain small transformers. Covers service conditions, definitions, rating, rating plates, miscellaneous requirements, tolerances, winding resistance, voltage ratio and voltage vector relationship, impedance voltage, no-load and current, harmonics of the no-load current, zero-sequence impedance and tests on on-load tap-changers.

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

    Committee PEL/113
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    EN 60289:1994/A11:2002 REACTORS
    BS 6056(1991) : AMD 7960 DETERMINATION OF TRANSFORMER AND REACTOR SOUND LEVELS
    BS 5622-1:1979 (published 1979-01) Guide for insulation co-ordination Terms, definitions, principles and rules
    BS 7821-3:1995 THREE PHASE OIL-IMMERSED DISTRIBUTION TRANSFORMERS, 50 HZ, FROM 50 TO 2500 KVA WITH HIGHEST VOLTAGE FOR EQUIPMENT NOT EXCEEDING 36 KV - SUPPLEMENTARY REQUIREMENTS FOR TRANSFORMERS WITH HIGHEST VOLTAGE FOR EQUIPMENT EQUAL TO 36 KV
    BS 6436:1984 SPECIFICATION FOR GROUND MOUNTED DISTRIBUTION TRANSFORMERS FOR CABLE BOX OR UNIT SUBSTATION CONNECTION
    BS 5611:1978 APPLICATION GUIDE FOR ON-LOAD TAP-CHANGERS
    BS EN 60289:1995 REACTORS
    BS 7821-1:1995 THREE PHASE OIL-IMMERSED DISTRIBUTION TRANSFORMERS, 50 HZ, FROM 50 TO 2500 KVA WITH HIGHEST VOLTAGE FOR EQUIPMENT NOT EXCEEDING 36 KV - PART 1: GENERAL REQUIREMENTS AND REQUIREMENTS FOR TRANSFORMERS WITH HIGHEST VOLTAGE FOR EQUIPMENT NOT EXCEEDING 24 KV
    BS EN 61330:1996 HIGH-VOLTAGE/LOW-VOLTAGE PREFABRICATED SUBSTATIONS
    BS 5126-4:1993 (published 1993-12) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled transformers to power drilling machines
    BS 5126-3:1993 (published 1993-12) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled lighting transformer units
    BS 7735:1994 GUIDE TO LOADING OF OIL-IMMERSED POWER TRANSFORMERS
    BS 6435:1984 SPECIFICATION FOR UNFILLED ENCLOSURES FOR THE DRY TERMINATION OF HV CABLES FOR TRANSFORMERS AND REACTORS
    BS 5953-1:1980 GUIDE ON POWER TRANSFORMERS - APPLICATION OF POWER TRANSFORMERS

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

    IEC 60076-5:2006 Power transformers - Part 5: Ability to withstand short circuit
    ISO 3:1973 Preferred numbers Series of preferred numbers
    IEC 60354:1991 Loading guide for oil-immersed power transformers
    IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
    IEC 60076-2:2011 Power transformers - Part 2: Temperature rise for liquid-immersed transformers
    IEC 60186:1987 Voltage transformers
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