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4.5.5 Resistance to abnormal heat
3 J+ ?+ B5 C0 U$ xThermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant
/ a, i8 H' l" xto abnormal heat.# i: H4 q/ z5 ^' A3 ^8 `
Compliance is checked by subjecting the part to the ball-pressure test according to IEC- }+ a. ^, o3 a7 d
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of
& t( d. a# l' G0 U7 Rthe material that it will meet the requirements of this test.
: I/ U- U0 i" c. m/ UThe test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
% d: m x. U! E6 `; P/ |, @2 vHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 1252 d6 |0 b/ s: F0 P# H$ f: H
°C.
1 O3 W% K$ f7 u3 N7 E# h' B6 VThe significances of T, Tma and Tamb are as given in 1.4.12.1. |
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