IEC 60371-2 Ed. 3.0 b:2004

Current Revision
Specification for insulating materials based on mica - Part 2: Methods of test

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Specification for insulating materials based on mica - Part 2: Methods of test

PUBLISH DATE 2004
PAGES 64

Specification for insulating materials based on mica - Part 2: Methods of test

Defines the methods of test which are applicable to built-up mica materials, products based on them and mica paper.

The main changes from the previous edition are as follows:

  • a) All clauses re-numbered.
  • b) Relevant template of ISO 67 has been added to this standard as Annex A.
  • c) Clause 8: Tensile strength and elongation at break Procedure modified to give "rate of movement" instead of "time limit". Different rate of movement for raw mica as opposed to reinforced and/or impregnated mica.
  • d) Clause 11: Stiffness Size of test specimen revised. Wording modified so that standard covers materials using carriers other than woven glass cloth and materials that are 3-ply. Revision of terms "machine direction" and "transverse direction". (These were incorrect in second edition (1987).)
  • e) Clause 13: Elastic compression and plastic compression Tolerance on measurement of height of stack changed to within 0,01 mm. Times for change in pressure in procedure changed to 1 min.
  • f) Clause 16: Electric strength Modified in line with Amendment 1 (1994) to the second edition (1987). Changes relate to latest edition of IEC 60243-1.
  • g) Clause 19: Detection of defects and conductive particles Revised subclause.
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