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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
* s6 {7 t8 P* J& s1 l2 n* k+ e30.1 External parts of non-metallic material, parts of insulating material supporting live* ]& P+ ^6 l2 J) ]$ T
parts including connections, and parts of thermoplastic material providing supplementary1 l: _% n: y7 `
insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration% Z8 o( Y' v$ r1 |% ]- B y4 J
could cause the appliance to fail to comply with this standard.
# E* M: K% ?' ]7 A( aThis requirement does not apply to the insulation or sheath of flexible cords or internal wiring.
7 h; x' u4 i$ i# a; q/ D6 R6 A+ ZCompliance is checked by subjecting the relevant part to the ball pressure test of
) M5 O- G" |$ \9 |5 vIEC 60695-10-2.
* w# e' Y. X4 {) yThe test is carried out at a temperature of 40 °C ± 2 °C plus the maximum temperature rise+ J( C A2 v6 d( q a; x
determined during the test of clause 11, but it shall be at least
) ~8 T& J/ {6 h! }1 y2 A% r4 S– 75 °C ± 2 °C, for external parts;, Y0 s( T9 z$ H* `/ v
– 125 °C ± 2 °C, for parts supporting live parts.
2 W- j, P: [9 iHowever, for parts of thermoplastic material providing supplementary insulation or
1 l+ {. E; J2 Q4 x2 a% Ureinforced insulation, the test is carried out at a temperature of 25 °C ± 2 °C plus the
6 |! r4 d$ w" S" A" Gmaximum temperature rise determined during the tests of clause 19, if this is higher. The# { W- `+ S+ |# z" m7 L% K
temperature rises of 19.4 are not taken into account provided that the test is terminated by
1 q+ [9 ]; [+ |7 g% _the operation of a non-self-resetting protective device and it is necessary to remove a
# z# d3 N/ W& a! kcover or use a tool to reset it.
) g6 Y0 P8 V: q1 d. F7 |2 iNOTE 1 For coil formers, only those parts that support or retain terminals in position are subjected to the test.
, b3 |/ B+ V2 W7 H( |: i. Y5 jNOTE 2 The test is not carriedout on parts of ceramic material.
9 p1 u) H& L3 W$ P4 P0 K% kNOTE 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
