|
|

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" N+ D; w' k) g
30.1 External parts of non-metallic material, parts of insulating material supporting live
6 j, H/ k3 [9 q0 j. nparts including connections, and parts of thermoplastic material providing supplementary1 h4 e% |( ~4 g6 ]8 S% O
insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration
; w9 l. h, |9 ncould cause the appliance to fail to comply with this standard.
! w, L G! ?6 t* I) BThis requirement does not apply to the insulation or sheath of flexible cords or internal wiring.
; i& V' ~% t( B8 X4 w1 h: XCompliance is checked by subjecting the relevant part to the ball pressure test of9 f$ Q1 S' t, ~
IEC 60695-10-2.
$ X: {2 \+ z( I: u1 sThe test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise3 ]: l9 T/ u: o7 B, t6 Q2 ~* Z" E9 E9 Q
determined during the test of clause 11, but it shall be at least
8 X) S8 e, e S6 N– 75 °C ± 2 °C, for external parts;+ q- ]. b. d$ r) n
– 125 °C ± 2 °C, for parts supporting live parts.
! ^2 T H7 g; y# m$ o# M, yHowever, for parts of thermoplastic material providing supplementary insulation or
2 K/ h5 y: n- e! }! E9 c+ T; ]8 ^reinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the
& a" k5 @7 W p( Mmaximum temperature rise determined during the tests of clause 19, if this is higher. The
5 R- o& \9 D5 ^8 o8 x5 o. d8 otemperature rises of 19.4 are not taken into account provided that the test is terminated by
- R6 ^, ]8 q9 d. {the operation of a non-self-resetting protective device and it is necessary to remove a2 R) V0 N% `! d% D
cover or use a tool to reset it.
' {) {1 t" i: v- \0 C0 eNOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
$ z3 O4 J1 {/ `. G3 GNOTE 2 The test is not carriedout on parts of ceramic material.7 Z( ~0 {, T/ O2 } O+ v
NOTE 3 The selection and sequence of tests for resistance to heat are shown in figure O.1.” |
|