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大家好，认证工程师说是根据：30 Resistance to heat and fire/ e: A+ Y P- @ ~1 K9 b& D) `' @
30.1 External parts of non-metallic material, parts of insulating material supporting live
# y% i0 G2 ^3 a. W& eparts including connections, and parts of thermoplastic material providing supplementary, a3 G7 c* z3 S7 n! v
insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration
7 m% R. j' L" @1 K. k6 }1 Lcould cause the appliance to fail to comply with this standard.) O B- j" H7 X; t( m
This requirement does not apply to the insulation or sheath of flexible cords or internal wiring.& a+ }! ?: O# F
Compliance is checked by subjecting the relevant part to the ball pressure test of
% I5 Q& j; {" J( ~0 IIEC 60695-10-2.
' B$ e- A, P8 r' gThe test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise
- t" D* r/ W" gdetermined during the test of clause 11, but it shall be at least* I( a' b6 l7 Z* V+ Z' e* w2 \* x
– 75 °C ± 2 °C, for external parts;
% Q, Z7 x' r8 A0 t– 125 °C ± 2 °C, for parts supporting live parts.1 u1 ?$ b! {3 T- h
However, for parts of thermoplastic material providing supplementary insulation or
9 N6 a5 n1 I; J# l" C2 Treinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the o; s8 R7 p2 X
maximum temperature rise determined during the tests of clause 19, if this is higher. The
% L0 }) P! M- L7 W' }temperature rises of 19.4 are not taken into account provided that the test is terminated by
' V" _6 a) c c# v. zthe operation of a non-self-resetting protective device and it is necessary to remove a* K# H { p1 w9 K. C; @# k
cover or use a tool to reset it.% Q' a0 V% {* S5 r+ Z" ?0 _& M( Z
NOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
3 q7 x5 |9 f' Q. |( V0 O8 t+ s" _NOTE 2 The test is not carriedout on parts of ceramic material.
Z$ q) L) m, t: [- LNOTE 3 The selection and sequence of tests for resistance to heat are shown in figure O.1.” |
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发表于 2007-6-26 10:09
