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4.5.5 Resistance to abnormal heat& v( J0 c. n: M) v
Thermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant
& j) V# q; ]' ^to abnormal heat.9 ^$ |! L9 A& G8 m2 n
Compliance is checked by subjecting the part to the ball-pressure test according to IEC# j+ P* q, ] [2 F6 x( z
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of
9 f# [- ?5 Z" ^3 D3 Sthe material that it will meet the requirements of this test.
1 _" i+ r; Y, ~5 F1 a& G, W- P+ o: U& `8 IThe test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
8 A# g7 L, p$ [) ~& Q1 O( w/ SHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 125
+ P/ |) Q; i/ m°C." f9 B" o% \, c% t0 ?7 [1 {( x
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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