BSI BS 3057:1958

Current Revision
Specification for untreated asbestos paper for electrical purposes

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BSI BS 3057:1958

Specification for untreated asbestos paper for electrical purposes

PUBLISH DATE 1958
BSI BS 3057:1958

WITHDRAWN

Two types depending on amount of organic binder; second type has greater mechanical strength and minimum number of conducting paths.

Thicknesses 5 to 10 mils, surface finish.

Tests for:

  • thickness
  • substance
  • electric strength
  • tensile strength
  • bursting strength after ageing
  • moisture content
  • freedom from conducting paths
  • loss of weight on ignition
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