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4.5.5 Resistance to abnormal heat
, R7 k+ u8 @, ^/ p! ^Thermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant% g9 ~1 g! j* F* K- H2 J2 r7 w4 \
to abnormal heat.
6 `4 `$ X: L$ zCompliance is checked by subjecting the part to the ball-pressure test according to IEC6 ^( D" N! e1 E$ l
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of. ?! f8 `5 W. l8 Y7 l2 c8 w
the material that it will meet the requirements of this test.- g6 _4 U1 E# {# V* ?; ~- G
The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.9 j+ K/ f- @# {' K! Z
However, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 125; n8 J) m3 f) J1 M4 U; S0 g! X
°C.! J& P5 Y7 S% N, W7 H r4 ~; [
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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