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BS 419:1966

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Specification for varnished fabrics and tapes for electrical purposes

Fabrics woven from cotton, silk, nylon, polyethylene terephthalate (PTP) and glass, coated with varnish, in full width of 36 in approx. or slit into tape. Yellow and black in nominal thicknesses 4 mil (0.10 mm) to 10 mil (0.25 mm). Thickness, width, length, joins, packaging, electric proof strength at 20°C and at 90°C, tensile strength, tearing strength, decrease in tearing strength with heat ageing in air, acidity, varnish stability, extensibility, confirmation of glass fabric base; test methods in appendices.

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Related Information

Similar Standards

  • BS 5689-1:1979

    Varnished fabrics for electrical purposes, Definitions and general requirements

  • BS 5689-2:1979

    Varnished fabrics for electrical purposes, Methods of test

  • BS 5689-3.1:1996

    Varnished fabrics for electrical purposes. Specifications for individual materials, Oleoresinous varnish. Cotton base, OR/C

  • BS 5689-3.2:1995

    Varnished fabrics for electrical purposes. Specifications for individual materials, Glass fabric based varnished fabrics with epoxy, polyurethane, silicone, polyester, bituminous or oleoresinous varnish

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BS 419:1966

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