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4.5.5 Resistance to abnormal heat
( ~: K! q6 v: W, MThermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant
/ N" A" M4 i. y0 |! p- ito abnormal heat.: P$ \/ u. e& r3 y7 }3 N5 D; i
Compliance is checked by subjecting the part to the ball-pressure test according to IEC/ }6 F3 D; Z" S0 h: @$ @
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of' e! b( T6 A" _" c5 h6 g ~
the material that it will meet the requirements of this test.; \% q8 G) E8 }3 e8 K4 A, S' E
The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
. [# t4 q4 i8 g6 c/ _# C; a7 Z! wHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 125
. Q, B9 T! M' Z/ u°C.! `; H; I }9 `4 X0 H* ~- ^$ i9 I
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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