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4.5.5 Resistance to abnormal heat
; r2 C' V- Y. |# c, DThermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant& z2 W2 O H2 ^7 [# o) E
to abnormal heat.
3 Y v) h# I4 G: W# o# [ a* `Compliance is checked by subjecting the part to the ball-pressure test according to IEC( A. `/ }, d0 i- q+ f2 S: p
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of$ f. Z6 T& r" f
the material that it will meet the requirements of this test.
/ F: _& M! S& P" V) }The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
4 C# H; s. |% i) mHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 125
7 F' \! \3 g/ B. I9 f°C.
5 {/ I; _: A$ b. v" k) rThe significances of T, Tma and Tamb are as given in 1.4.12.1. |
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