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如何对电吹风分离电路做39.3.3和39.3.4？UL8593 `/ E, ?7 ~: e
The air inlet opening shall be gradually obstructed until the operation of all circuits is interrupted/ G1 t) v% ?/ w
by the functioning of a limit or a temperature control, or until ultimate results are otherwise obtained
: {' U! T: d$ q- z6 p39.3.4.2 The air outlet is to be gradually obstructed using masking tape such that approximately 50, 75,' E4 m+ w8 ]/ \' c% l" {/ G
90, and 100 percent of the outlet opening area is progressively blocked for 3 minutes at each of the four ?2 s- K3 U4 T8 O5 V
positions. For each of three samples, the location at which the blocking begins (the top, a side, or bottom)
2 A9 N; M3 J7 k4 e3 w9 _is to progress in the same direction in which it was started and is to be such that the limit control will' O' p8 }& J: g$ [, ]7 t
remain in the air flow for the longest possible time as blocking progresses. If temperatures cause1 S$ `; m. ~2 M& b |
degradation of the tape, or if the use of tape would cause deformation of an outlet nozzle, a metal plate2 J+ K, ]! T4 C1 c; j! [! u$ m# u
or other material resistant to combustion may be used to block the outlet opening. If the final 100 percent
0 t$ W( T8 r( c3 T! {9 W5 `blockage test does not result in interruption of all heater and motor circuits by a limit control, the test is to9 t: i, y- a# ~1 E$ Q
be continued, at 100 percent blockage, for 7-1/2 hours, at which time ultimate results are considered to
6 z, `8 B& |) }' Qbe achieved.- J* W) l; B* K. r( |1 t6 h `/ ]- Y9 M
是不是TCO动作了不停止了，还是做到最终结果或者是FUSE开路? |
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发表于 2009-5-30 17:21
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