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4.5.5 Resistance to abnormal heat
: n, g6 x5 y3 u3 qThermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant& t& N6 }: O; s
to abnormal heat.
6 D4 X0 f! _7 z; d5 ?Compliance is checked by subjecting the part to the ball-pressure test according to IEC- `; W; f& ]" E% _ N* w" G
60695-10-2. The test is not made if it is clear from examination of the physical characteristics of: f* S9 H4 V: s8 V
the material that it will meet the requirements of this test.( }( A1 B9 N B9 \
The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.+ S* w- W9 R- _8 c+ P/ V
However, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 1250 r& J/ j3 I, \. u9 s$ d- A
°C.
! @1 z8 l- G g1 `The significances of T, Tma and Tamb are as given in 1.4.12.1. |
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