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4.5.5 Resistance to abnormal heat! g2 `; P |! ~$ ^& }/ h
Thermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant
( D6 o, s' h2 J0 S# Sto abnormal heat.
) c$ _7 K. g" ]1 HCompliance is checked by subjecting the part to the ball-pressure test according to IEC- `& L$ f' l& T9 L7 ~; K
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of$ |( E) ]/ T* W6 d2 U( j
the material that it will meet the requirements of this test.) Q# ^2 k+ P* v, z+ e- t( T
The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
; s! X) o) {. U3 _/ U1 l( ^; [( ZHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 1257 r3 A; ] `9 d; t' x) r
°C.! H# O5 d3 Z! e3 L
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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