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大家好,认证工程师说是根据:30 Resistance to heat and fire
" u5 c4 z5 i4 `% x30.1 External parts of non-metallic material, parts of insulating material supporting live( o1 n9 D0 ~+ F j
parts including connections, and parts of thermoplastic material providing supplementary
+ b: a+ Y: e. {& a8 u! Ninsulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration% i& O# \' @6 Y! e* `$ v
could cause the appliance to fail to comply with this standard.
1 w5 Z0 ?9 u% x: ?) ]This requirement does not apply to the insulation or sheath of flexible cords or internal wiring.1 N: D# ~" S4 ~
Compliance is checked by subjecting the relevant part to the ball pressure test of4 H) x5 i$ s& A
IEC 60695-10-2.
/ J" W+ y. L! Z) k3 O8 A) HThe test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise# G F9 v0 b% O# w8 x6 K* j8 e
determined during the test of clause 11, but it shall be at least2 e; c7 n2 N& \% M7 |& A* y
– 75 °C ± 2 °C, for external parts;" D' z9 s q! P6 G9 y
– 125 °C ± 2 °C, for parts supporting live parts., l& h3 d$ Q5 }
However, for parts of thermoplastic material providing supplementary insulation or6 J$ x& X; S) v' ~$ _7 i
reinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the, ]1 x2 u. Y& S; j6 e3 S
maximum temperature rise determined during the tests of clause 19, if this is higher. The
- e9 g" m' K0 A. f0 I" F1 ~3 Xtemperature rises of 19.4 are not taken into account provided that the test is terminated by
O) S4 ~0 d! ]0 t& T9 E2 k, Cthe operation of a non-self-resetting protective device and it is necessary to remove a9 T) {1 R4 h d$ l
cover or use a tool to reset it.6 t( C. H% p: C& E
NOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
0 o/ p& a* a+ ^; @NOTE 2 The test is not carriedout on parts of ceramic material.
$ A m% U B4 Y M+ K! aNOTE 3 The selection and sequence of tests for resistance to heat are shown in figure O.1.” |
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