Skip to content
Please enter a keyword to search

  • BS 7704:1993

    View superseded by
    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
    View superseded by

    Specifications for silicone liquids for electrical purposes

    Available format(s):  Hardcopy, PDF

    Superseded date:  17-10-2005

    Language(s):  English

    Published date:  15-11-1993

    Publisher:  British Standards Institution

    Add To Cart

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

    Committees responsible
    National foreword
    Foreword
    Section One - General
    1. Scope
    2. Description and general properties
    3. Safety
    4. Storage and maintenance
    5. Disposal
    6. Packaging and labelling
    7. Sampling
    Section Two - Test methods
    8. Colour and appearance
    9. Density
    10. Kinematic viscosity
    11. Flash-point
    12. Fire-point
    13. Refractive index
    14. Flammability
    15. Pour-point
    16. Water content
    17. Neutralization value
    18. Ageing test
    19. Breakdown voltage
    20. Dielectric dissipation factor, permittivity, d.c.
         resistivity
    21. Gassing under electrical stress and ionization
    Section Three - Individual specifications
    22. Specifications for unused silicone liquids
    Sheet 1
    Appendix A: Thermometer specifications for the ageing
                test
    Figure
    Annex ZA (normative) Other international publications
             quoted in this standard with the references of
             the relevant European publications
    National annex NA (informative) Cross-references

    Abstract - (Show below) - (Hide below)

    Guidance on properties, safety, storage, disposal, packaging, labelling and sampling, test methods and a specification sheet.

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

    Committee GEL/10
    Development Note Supersedes 84/29795 DC, 84/29796 DC and 84/29797 DC (10/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    BS 7713:1993 Guide for the maintenance of silicone transformer liquids
    BS 6164:2001 Code of practice for safety in tunnelling in the construction industry

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

    ISO 3016:1994 Petroleum products Determination of pour point
    BS 6725:1986 Method for determination of water in liquid dielectrics by automatic coulometric Karl Fischer titration
    BS 5737:1979 Method for the measurement of relative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids
    BS 6664-5:1990 Flashpoint of petroleum and related products. Method for determination of flashpoint by Pensky-Martens closed tester
    ISO 5661:1983 Petroleum products Hydrocarbon liquids Determination of refractive index
    IEC 60475:2011 Method of sampling insulating liquids
    BS 6470:1984 Method for determination of water in insulating oils, and in oil-impregnated paper and pressboard
    BS 5797:1986 Methods for measurement of gassing of insulation liquids under electrical stress and ionization
    BS 4689:1980 Method for determination of flash and fire points of petroleum products: Cleveland open cup method
    BS 5874:1980 Method for determination of the electric strength of insulating oils
    BS 4714:1980 Method for laboratory determination of density or relative density of crude petroleum and liquid petroleum products (hydrometer method)
    View more information

    • Access your standards online with a subscription

      Features

      • 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