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  • BS 148:1998

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Specification for unused and reclaimed mineral insulating oils for transformers and switchgear

    Available format(s):  Hardcopy, PDF

    Superseded date:  28-02-2009

    Language(s):  English

    Published date:  15-07-1998

    Publisher:  British Standards Institution

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

    1 General
    2 Definitions
    3 Classification
    4 Identification and delivery
    5 Sampling
    6 Properties of the oils
    7 Test methods
    Tables
    1 Uninhibited mineral insulating oils
    2 Inhibited mineral insulating oils
    List of references

    Abstract - (Show below) - (Hide below)

    Defines requirements for unused and reclaimed oxidation inhibited and uninhibited mineral insulating oils, to be used in transformers, switchgear and similar electrical equipment where oil is needed as an insulant or for heat transfer. Not applicable to mineral insulating oils for use as impregnates in cables or capacitors, nor to hydrocarbon insulating liquids obtained by synthesis.

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

    Committee GEL/10
    Development Note Supersedes BS 148(1997) and 96/200551 DC (05/2005) Reviewed and confirmed by BSI, November 2008. (10/2008)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded

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

    BS EN ISO 3675:1998 Crude petroleum and liquid petroleum products. Laboratory determination of density. Hydrometer method
    BS 1752:1983 Specification for laboratory sintered or fritted filters including porosity grading
    BS 5737:1979 Method for the measurement of relative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids
    BS EN 60156:1996 Insulating liquids. Determination of the breakdown voltage at power frequency. Test method
    BS EN 61125:1993 Unused hydrocarbon-based insulating liquids. Test methods for evaluating the oxidation stability
    BS 5263:1975 Method for sampling liquid dielectrics
    IEC 60296:2012 RLV Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
    BS 5984:1980 Method for detection and determination of specified anti-oxidant additives in insulating oils
    BS 2000-1(1995) : 1995 METHODS OF TEST FOR PETROLEUM AND ITS PRODUCTS - DETERMINATION OF ACIDITY, NEUTRALIZATION VALUE - COLOUR INDICATOR TITRATION METHOD
    BS 5797:1986 Methods for measurement of gassing of insulation liquids under electrical stress and ionization
    BS EN ISO 3104:1996 Methods of test for petroleum and its products. Petroleum products. Transparent and opaque liquids. Determination of kinematic viscosity and calculation of dynamic viscosity
    BS EN 61198:1994 Mineral insulating oils. Methods for the determination of 2-furfural and related compounds
    IP 3 : 1949 AROMATIC CONTENT
    BS 2000-15(1995) : 1995 METHODS OF TEST FOR PETROLEUM AND ITS PRODUCTS - PETROLEUM PRODUCTS - DETERMINATION OF POUR POINT
    IEC 60814:1997 Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration
    BS 2000-346(1996) : 1996 METHODS OF TEST FOR PETROLEUM AND ITS PRODUCTS - DETERMINATION OF POLYCYCLIC AROMATICS IN UNUSED LUBRICATING BASE OILS AND ASPHALTENE FREE PETROLEUM FRACTIONS - DIMETHYL SULPHOXIDE EXTRACTION REFRACTIVE INDEX METHOD
    BS 5680:1979 Method for detection of corrosive sulphur in petroleum-based electrical insulating oils
    BS EN 22719:1994 Methods of test for petroleum and its products. Petroleum products and lubricants. Determination of flash point. Pensky-Martens closed cup method
    BS EN 61619:1997 Insulation liquids. Contamination by polychlorinated biphenyls (PCBs). Method of determination by capillary column gas chromatography
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