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发表于 2007-6-27 10:40
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大家好,认证工程师说是根据:30 Resistance to heat and fire
- U7 u" u$ g% z) C& [8 h7 R30.1 External parts of non-metallic material, parts of insulating material supporting live
0 x6 L5 y1 d( c" ]2 bparts including connections, and parts of thermoplastic material providing supplementary& S3 ]0 ]1 [# n/ O
insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration
7 {; m) r3 a. J: G, e1 Jcould cause the appliance to fail to comply with this standard.8 J+ B0 E+ X" \# t2 `
This requirement does not apply to the insulation or sheath of flexible cords or internal wiring.' V8 [* X/ w% @
Compliance is checked by subjecting the relevant part to the ball pressure test of! C. p+ e4 q" I w! c: ^/ p
IEC 60695-10-2.
, [5 ~' u- x9 z3 a1 Q' lThe test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise$ H" c/ J) Z. F- |' Q( {3 y/ z' o! N
determined during the test of clause 11, but it shall be at least
% C* ^- Q3 L4 V z6 A' N7 H# f– 75 °C ± 2 °C, for external parts;
3 b; H7 C# V; M. J– 125 °C ± 2 °C, for parts supporting live parts.
4 t/ l! [9 r7 J0 L+ X. s2 LHowever, for parts of thermoplastic material providing supplementary insulation or
" z, W7 R7 T3 K5 ^$ Sreinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the
2 y N, T, k6 [6 a0 u4 H6 zmaximum temperature rise determined during the tests of clause 19, if this is higher. The
6 E) Y' U5 A5 M! ]7 d' |temperature rises of 19.4 are not taken into account provided that the test is terminated by
( q, w+ w& P8 k3 W/ U1 Y+ d# Tthe operation of a non-self-resetting protective device and it is necessary to remove a
6 m& @9 r K; Jcover or use a tool to reset it.! S- a- T8 p/ c# B2 L4 `
NOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.( [) f4 V) x3 v' N" T' H
NOTE 2 The test is not carriedout on parts of ceramic material.5 t! l Y8 `. @/ v9 r! S; W
NOTE 3 The selection and sequence of tests for resistance to heat are shown in figure O.1.” |
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