Note that references are to IEC 60950 Third Edition 1999-04. Where the references in the Second Edition differ, they appear in parentheses.
REQUIREMENTEnclosures of moulded or formed thermoplastic materials shall be so constructed that any shrinkage or distortion of
the material due to the release of internal stresses caused by the moulding or forming operation does not result in the exposure of hazardous parts.
TEST METHODThe enclosure is heated to 10°C above the hottest temperature recorded on the enclosure during the heating test
, but not less than 70°C, for a period of 7 hours, and then allowed to cool to room temperature.After this test, the product shall not be deformed in any way
that would cause a hazard. In particular, hazardous parts must not be accessible.
REFERENCE
Complete requirements are given in IEC 60950, Clause 4.2.7 (4.2.6).
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