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4.5.5 Resistance to abnormal heat6 _& E3 ^* R' \0 z8 F
Thermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant; S, F+ e0 z$ @& }) M* m7 a
to abnormal heat.$ H5 K0 t% W4 K
Compliance is checked by subjecting the part to the ball-pressure test according to IEC5 J- ?* R* K* J. Z1 |
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of
, \) g( p7 w( E+ x( Athe material that it will meet the requirements of this test.+ M' m6 w* }# ]( N/ D4 L* ?
The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
$ @9 ?% J' e" s' @! BHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 125' S# M* {7 ?5 M
°C.' t7 r& W4 j7 Q# ^# S, o5 z
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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