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4.5.5 Resistance to abnormal heat
, V3 q, T9 W$ u8 m/ wThermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant$ j9 V# C9 ], k2 l
to abnormal heat.5 E! R% K- P7 u( A; B
Compliance is checked by subjecting the part to the ball-pressure test according to IEC
' S; z) r8 p5 L! k v" E60695-10-2. The test is not made if it is clear from examination of the physical characteristics of- l6 S) u9 K3 n, ^* l6 l: P
the material that it will meet the requirements of this test.% J+ m4 Y1 @% ^+ ^- G" b
The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.- Y) u/ f! Y; k0 `/ g, ]' t3 H
However, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 125, F, t3 G/ S; e5 f Y# T
°C.9 b, a5 @: m O
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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