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引用第13楼andychen于2010-06-28 15:10发表的 :
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1 F7 Y/ v5 }( U是不是说,你用每一家有UL认证的产品,都需要向其供应商要其产品的FUS,不然不能用? Normally, that's right. so at the begining of the UL certification, some factories have to select several suppliers as the alternate items and let the UL engineer do the evaluation at the same time. it can avoid some questions later on, but not always the revisions need to be evaluated, it finally depends on the description of your FUS procedure. For examples, pls see below resumed description in the FUS procedure:* |4 \ _/ i2 D( l4 K- o8 v2 b
1.PWB---R/C ZPMV2, 94V-0.
% x+ {( b( a8 i1 Z- k/ F; QA: at this time, if the PWB is changed, but the new PWB is also UL approved, and have the flammability class 94V-0 or better, then the change is not needed to be reevaluated.
7 U3 z1 H+ Z* t3 r, n2.Enclosure---PVC R/C QMFZ2,94V-2, manufactured by XXX, LTD, Model.YYY.
( m% C1 u: ?# @3 R' I2 ]A: at this time, if the material of the enclosure is changed to another model No. or another provider, then at this time,it must be reevaluated.
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! }0 @, w# z' R; o; Pso all the revision should be compared with the FUS procedure's description,then decide to do next step... |
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