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大家好,认证工程师说是根据:30 Resistance to heat and fire
$ K. S4 n+ e: X$ X9 L4 |6 P7 L- @( L30.1 External parts of non-metallic material, parts of insulating material supporting live
9 \, Y! J$ r% G& q2 J% Cparts including connections, and parts of thermoplastic material providing supplementary
4 N- y+ J7 O) k1 f( M/ ?insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration
+ v4 \3 b/ q+ I5 kcould cause the appliance to fail to comply with this standard.
) e i; e; J' lThis requirement does not apply to the insulation or sheath of flexible cords or internal wiring.
1 B. o( u6 b% }! P) r l$ ACompliance is checked by subjecting the relevant part to the ball pressure test of; D# Y/ Z5 H7 U3 h% U
IEC 60695-10-2.
! T9 N; h0 Z1 g" N2 i7 g ]; }The test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise. S+ p* U5 |, f* I9 a; F0 }: s
determined during the test of clause 11, but it shall be at least
+ e1 R2 N! b, z- s3 A: L3 N– 75 °C ± 2 °C, for external parts;
. G' m5 D& H2 R– 125 °C ± 2 °C, for parts supporting live parts.6 X1 a1 T& w& Z+ h# E
However, for parts of thermoplastic material providing supplementary insulation or# a1 ?6 ^6 t) P5 N$ D% a: n
reinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the
2 a' r' C" ~, F- [1 Imaximum temperature rise determined during the tests of clause 19, if this is higher. The
# Y1 E) h6 T7 Y+ P2 {) I3 Ktemperature rises of 19.4 are not taken into account provided that the test is terminated by
& v# ^/ ]0 E% x& ?1 a5 q) o/ Lthe operation of a non-self-resetting protective device and it is necessary to remove a
( r) j4 i, C' Q% \. E3 y) dcover or use a tool to reset it.
1 [. I: Y/ k! P" F& }1 kNOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
6 z1 Q1 Y' @: r, I9 r; RNOTE 2 The test is not carriedout on parts of ceramic material.* z% Y) D" T; ? Z/ S
NOTE 3 The selection and sequence of tests for resistance to heat are shown in figure O.1.” |
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