Note that references are to IEC 60950 Third Edition 1999-04. Where the references in the Second Edition differ, they appear in parentheses.
REQUIREMENTHygroscopic material shall not be used as insulation.
TEST METHODThe material to be tested is placed in a cabinet or room for 48 hours at a humidity of between 91% RH and 95% RH and at any temperature between 20°C and 30°C
maintained with a stability of 1°C. After the humidity treatment, the material is subjected to the relevant electric strength test.
REFERENCEComplete requirements are given in IEC 60950, Clause 2.9.2 (2.2.3).
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