|
|
4.5.5 Resistance to abnormal heat" h+ \) |9 h! Z3 m6 W! F' |
Thermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant
* c5 w0 x( |, fto abnormal heat.
3 z$ ]. e" E- y( t5 XCompliance is checked by subjecting the part to the ball-pressure test according to IEC
: M- Q1 H$ m9 ^; r60695-10-2. The test is not made if it is clear from examination of the physical characteristics of
5 [1 W% z. a- qthe material that it will meet the requirements of this test.
0 |2 z$ z" P: dThe test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C., o c0 g# \, j/ `) i5 I
However, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 1253 U" W! L8 m* D4 H0 q, r
°C.
& v# \0 a/ q/ M7 b+ g- [The significances of T, Tma and Tamb are as given in 1.4.12.1. |
|