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4.5.5 Resistance to abnormal heat2 d9 d% k0 A9 H2 u. F [
Thermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant7 C) J( W# d' `
to abnormal heat.
. v. F) t5 d+ P- I B2 PCompliance is checked by subjecting the part to the ball-pressure test according to IEC
; e0 [9 o2 Z1 r; b1 g9 d8 S8 D60695-10-2. The test is not made if it is clear from examination of the physical characteristics of- ]8 e2 U' @- p+ M% g* s
the material that it will meet the requirements of this test.% r0 U9 }1 q( L. L8 k3 l( { P: ?
The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
0 y0 Y. d( E* r6 }7 RHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 1255 I, D+ f4 F4 j, J2 m4 ^' {* F
°C.2 q/ P. t x: u. L2 O
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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