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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 fire3 F" P! I" R: L! c
30.1 External parts of non-metallic material, parts of insulating material supporting live
/ _/ _ e/ S0 ~% H" S- `parts including connections, and parts of thermoplastic material providing supplementary
2 s6 \# n" k! W1 K; I+ z. Uinsulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration z# g0 E$ H! u% D2 i! P
could cause the appliance to fail to comply with this standard.
& B- c1 u' D* {. p. O7 hThis requirement does not apply to the insulation or sheath of flexible cords or internal wiring.7 ]; c' S- P: W( v1 O) t
Compliance is checked by subjecting the relevant part to the ball pressure test of. q2 X- X% i! p8 n6 p
IEC 60695-10-2.
/ S+ K2 A% B1 i' i: C; d5 V( t" ~ uThe test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise
8 G4 F# C6 `% S% m, P9 x5 ]9 Gdetermined during the test of clause 11, but it shall be at least5 w1 @4 v" i o
– 75 °C ± 2 °C, for external parts;
& I7 B" T+ @- H9 K$ d– 125 °C ± 2 °C, for parts supporting live parts.6 ]) f, Z X# Z& s2 v
However, for parts of thermoplastic material providing supplementary insulation or
8 T" _# |( Y3 P9 c; }reinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the" u2 n! d, b: U
maximum temperature rise determined during the tests of clause 19, if this is higher. The _$ t4 a H9 u
temperature rises of 19.4 are not taken into account provided that the test is terminated by
$ a- W! _& ^ p2 Mthe operation of a non-self-resetting protective device and it is necessary to remove a9 |( S; G$ y: W3 r' Q
cover or use a tool to reset it.. T6 @8 m+ W5 w0 [0 R& m( F1 J
NOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
, Z: d O" L8 ]7 d1 K* oNOTE 2 The test is not carriedout on parts of ceramic material.
! z& C! G5 i M! ?6 V3 W" FNOTE 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
