|
|
4.5.5 Resistance to abnormal heat0 Z7 s2 i/ _' S2 t4 b
Thermoplastic parts on which parts at HAZARDOUS VOLTAGE are directly mounted shall be resistant3 W& z; b6 L- X# B
to abnormal heat. Z5 w( o! {+ z) U
Compliance is checked by subjecting the part to the ball-pressure test according to IEC
, i" C6 l9 g/ f60695-10-2. The test is not made if it is clear from examination of the physical characteristics of! d' S% \# t* `- [" K
the material that it will meet the requirements of this test.
# O9 T: k$ R0 R8 _2 X4 ~4 {6 k- L/ h7 {The test is made in a heating cabinet at a temperature of (T − Tamb + Tma + 15 °C) ± 2 °C.
; E( D* U4 y. k3 N$ n1 @3 f! D5 Z, BHowever, a thermoplastic part supporting parts in a PRIMARY CIRCUIT is tested at a minimum of 1251 ?4 [$ q. O4 A
°C.
& ?( G" J' ]( k' PThe significances of T, Tma and Tamb are as given in 1.4.12.1. |
|