• BS 5737:1979

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Method for the measurement of relative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids

    Available format(s):  Hardcopy, PDF

    Superseded date:  26-04-2004

    Language(s):  English

    Published date:  31-08-1979

    Publisher:  British Standards Institution

    Add To Cart

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

    National foreword
    Cooperating organizations
    1 Scope
    2 Definitions
    3 General considerations
    4 Apparatus
    5 Cleaning solvents
    6 Cleaning the test cell
    7 Sampling
    8 Conditioning and preparation of specimens
    9 Filling the test cell
    10 Test temperature
    11 Measurement of dissipation factor
    12 Measurement of relative permittivity
    13 Measurement of d.c. resistivity
    A Alternative procedures for routine testing of
        dielectric dissipation factor and resistivity of
        insulating liquids
    1 Example of a three-terminal cell for measurements on
    1a Example of screening for the cell of Figure 1
    2 Example of a two-terminal cell for measurements on

    Abstract - (Show below) - (Hide below)

    Reference tests for determining the principal electrical characteristics of hydrocarbon insulating oils and askarels (applicable to unused oils and oils in service). Also gives simplified procedure for routine testing.

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

    Committee GEL/10
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    BS EN 61125:1993 Unused hydrocarbon-based insulating liquids. Test methods for evaluating the oxidation stability
    BS 148:1998 Specification for unused and reclaimed mineral insulating oils for transformers and switchgear
    BS EN 60465:1992 Specification for unused insulating mineral oils for cables with oil ducts
    BS 5730:2001 Monitoring and maintenance guide for mineral insulating oils in electrical equipment
    BS 3573:1990 Specification for polyolefin copper-conductor telecommunication cables
    BS 7704:1993 Specifications for silicone liquids for electrical purposes
    BS 7506-2:1996 Methods for measurement in electrostatics Test methods
    BS EN 60867:1994 Insulating liquids. Specifications for unused liquids based on synthetic aromatic hydrocarbons
    BS 148:1997 Specification for unused and reclaimed mineral insulating oils for transformers and switchgear

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

    IEC 60093:1980 Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
    • Access your standards online with a subscription


      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective