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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
: l9 n3 `) _* ^30.1 External parts of non-metallic material, parts of insulating material supporting live
4 U- Z0 c+ I6 @+ O" O4 u; _parts including connections, and parts of thermoplastic material providing supplementary) p7 u6 O5 Z& t% ]) U4 V
insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration* d) z- ?3 u( s
could cause the appliance to fail to comply with this standard.. B/ N6 `: d; _, ~( A( R, |
This requirement does not apply to the insulation or sheath of flexible cords or internal wiring.
8 T. e2 H. o- C$ c5 C/ K# hCompliance is checked by subjecting the relevant part to the ball pressure test of
" X, d0 y# E6 J2 R5 bIEC 60695-10-2.
- }$ H2 Q- r. p }The test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise
( O. c2 |8 T" @7 Ndetermined during the test of clause 11, but it shall be at least
+ G9 o: {, t( k. \6 X% w) I– 75 °C ± 2 °C, for external parts;
' T- _+ D, g3 ^2 x" [– 125 °C ± 2 °C, for parts supporting live parts.( w, s2 A/ D# h9 ~+ M" b9 ?5 P$ p
However, for parts of thermoplastic material providing supplementary insulation or
/ P; }8 \7 B8 t1 t% v1 |/ c' \! `reinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the
7 W7 g/ g& R! u& X: J9 k0 D* Imaximum temperature rise determined during the tests of clause 19, if this is higher. The. }1 o( d4 ^" h
temperature rises of 19.4 are not taken into account provided that the test is terminated by
* e5 w+ F1 W$ W. {0 V# qthe operation of a non-self-resetting protective device and it is necessary to remove a
! ~6 f. E, U, @: F/ z- M4 _0 ucover or use a tool to reset it.5 E. `6 e: E1 l: S! G" b
NOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
3 i5 @1 ? ^/ S7 O( vNOTE 2 The test is not carriedout on parts of ceramic material.7 D, ?8 i5 k9 M9 H* E, Z
NOTE 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