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如何对电吹风分离电路做39.3.3和39.3.4？UL859
The air inlet opening shall be gradually obstructed until the operation of all circuits is interrupted
by the functioning of a limit or a temperature control, or until ultimate results are otherwise obtained
39.3.4.2 The air outlet is to be gradually obstructed using masking tape such that approximately 50, 75,
90, and 100 percent of the outlet opening area is progressively blocked for 3 minutes at each of the four
positions. For each of three samples, the location at which the blocking begins (the top, a side, or bottom)
is to progress in the same direction in which it was started and is to be such that the limit control will
remain in the air flow for the longest possible time as blocking progresses. If temperatures cause
degradation of the tape, or if the use of tape would cause deformation of an outlet nozzle, a metal plate
or other material resistant to combustion may be used to block the outlet opening. If the final 100 percent
blockage test does not result in interruption of all heater and motor circuits by a limit control, the test is to
be continued, at 100 percent blockage, for 7-1/2 hours, at which time ultimate results are considered to
be achieved.
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 2011-12-26 21:16:20
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