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如何对电吹风分离电路做39.3.3和39.3.4？UL8591 ]/ V' }4 a0 w" o, s$ w" p- L
The air inlet opening shall be gradually obstructed until the operation of all circuits is interrupted
- y+ {3 Z4 a* C' qby the functioning of a limit or a temperature control, or until ultimate results are otherwise obtained
' ?$ t* M, C8 S# s$ D39.3.4.2 The air outlet is to be gradually obstructed using masking tape such that approximately 50, 75,
1 o, t, D0 J& Q; Z2 z5 E90, and 100 percent of the outlet opening area is progressively blocked for 3 minutes at each of the four1 _( x; A7 T8 b3 h7 E
positions. For each of three samples, the location at which the blocking begins (the top, a side, or bottom)
% n+ T5 Y9 ?# s5 _5 N$ kis to progress in the same direction in which it was started and is to be such that the limit control will4 r. ^" R& N: B' {7 F
remain in the air flow for the longest possible time as blocking progresses. If temperatures cause
1 A( W, k: q2 bdegradation of the tape, or if the use of tape would cause deformation of an outlet nozzle, a metal plate& {9 p* Z' P" R, ?0 F e
or other material resistant to combustion may be used to block the outlet opening. If the final 100 percent0 q. o% w& X1 \
blockage test does not result in interruption of all heater and motor circuits by a limit control, the test is to
3 f9 b+ P; n: {, a( Hbe continued, at 100 percent blockage, for 7-1/2 hours, at which time ultimate results are considered to
q2 ~, B7 Y% h4 a6 ?. tbe achieved.
( |9 S1 ~7 N2 \9 ^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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