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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
8 h' T/ B& m" f, T. q. h30.1 External parts of non-metallic material, parts of insulating material supporting live0 {1 J4 [9 Z# J$ B6 S' ]9 t
parts including connections, and parts of thermoplastic material providing supplementary6 d) q- J" _1 z: E, d6 A
insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration5 r; L8 `% v5 Q$ n5 x9 d
could cause the appliance to fail to comply with this standard.
$ x. V! m- V ^1 {3 x c- aThis requirement does not apply to the insulation or sheath of flexible cords or internal wiring.. x. U+ b, k9 K' U$ ~
Compliance is checked by subjecting the relevant part to the ball pressure test of
& P/ c+ }& ^. `: L8 _0 H( u2 u0 K ]2 rIEC 60695-10-2.2 q+ h8 K, ]4 A/ ^! ^: D3 P% n
The test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise+ S3 U3 g% a# s1 \2 m
determined during the test of clause 11, but it shall be at least& |2 m( d: U- Y) ^
– 75 °C ± 2 °C, for external parts;
+ @, e, o% k2 B! s) | T) F– 125 °C ± 2 °C, for parts supporting live parts. u# E: D1 B, A: ~- U2 A# {% X
However, for parts of thermoplastic material providing supplementary insulation or& L% {2 }; @% D# T0 d$ Q) T
reinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the
. K; z( F# V; hmaximum temperature rise determined during the tests of clause 19, if this is higher. The
, o8 d# {( g8 c; gtemperature rises of 19.4 are not taken into account provided that the test is terminated by- U7 |4 h& f. @: y( H5 N8 |6 u- u
the operation of a non-self-resetting protective device and it is necessary to remove a1 x/ a2 e/ \) s. Q4 X: F
cover or use a tool to reset it.
& s- X; Z6 t2 c9 gNOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.' {( y3 m5 j; k+ c0 V
NOTE 2 The test is not carriedout on parts of ceramic material.
. t9 a4 X! t+ Z6 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
