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4.5.5 Resistance to abnormal heat
; v9 K1 B& y& O0 c' mThermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant7 \9 }* Z7 h8 \; C
to abnormal heat.
; u/ V! v% o$ I+ {0 }" m6 c# _Compliance is checked by subjecting the part to the ball-pressure test according to IEC
: F9 T9 a9 w6 o1 `, x60695-10-2. The test is not made if it is clear from examination of the physical characteristics of
3 u g; d+ b7 ^/ ethe material that it will meet the requirements of this test.
" ]9 }* X# ~- H3 r. u" hThe test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.( E. K! e1 y5 [( n/ P5 ^# m9 k
However, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 125$ X3 P! m. {( |
°C./ k. ]" d# _, o- c+ H0 M
The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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