|
|
楼主 |
发表于 2007-6-27 10:40
|
显示全部楼层
大家好，认证工程师说是根据：30 Resistance to heat and fire
; g% M' }" i N' K30.1 External parts of non-metallic material, parts of insulating material supporting live8 q9 Y# V9 R6 o1 Z3 O' ?* s, q b
parts including connections, and parts of thermoplastic material providing supplementary
$ l3 o; Z1 o- I: D3 X8 {; Q; kinsulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration
) K; J4 V. Z' _) _3 g+ ] ]0 k+ ?' K( |could cause the appliance to fail to comply with this standard.
4 [9 U5 [: C2 B1 H; D; B& EThis requirement does not apply to the insulation or sheath of flexible cords or internal wiring.
7 ]# @5 F- I NCompliance is checked by subjecting the relevant part to the ball pressure test of) } D* ~: p u* u6 R( ~: H4 i) `
IEC 60695-10-2.9 n# y- S% D4 b) ~* g; E
The test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise
+ R: \5 [, Z2 c% q1 P3 wdetermined during the test of clause 11, but it shall be at least
+ s8 ]+ J4 Q+ }! H– 75 °C ± 2 °C, for external parts;; N9 @* `8 `5 K g8 A( {) n
– 125 °C ± 2 °C, for parts supporting live parts.8 W! C |0 O6 e% Q
However, for parts of thermoplastic material providing supplementary insulation or
7 c) w, B) ^/ `9 G( S) A2 j8 O) S9 Dreinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the
* W& D3 @/ \0 ^9 Qmaximum temperature rise determined during the tests of clause 19, if this is higher. The2 C0 ^+ P1 ^% J z3 o. x9 X
temperature rises of 19.4 are not taken into account provided that the test is terminated by
4 W; s, e2 a% ^) othe operation of a non-self-resetting protective device and it is necessary to remove a
6 _2 c; a ~( _" P8 n7 hcover or use a tool to reset it.
V0 h; B0 H& @NOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
; U5 Y) Y% d7 a% @" y- A$ a$ vNOTE 2 The test is not carriedout on parts of ceramic material.
/ ]$ S/ k9 q& H/ q" RNOTE 3 The selection and sequence of tests for resistance to heat are shown in figure O.1.” |
|
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 )
窥视卡
雷达卡
显身卡
发表于 2007-6-26 10:09