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lds08080808 发表于 2016-9-26 09:35
/ s, U7 I, Y8 D N, Q3 _4 o" d( n( k老大,是UL998,平时做美标产品少,欧标做完非正常不会重加水去评估,对美标标准理解也不透彻,所以上来请 ... 5 K0 u B ^. t, K
65 Abnormal Operation Test
4 v( [- r$ Y; _& v# @65.1 General
: ^+ |" z, H7 R1 n65.1.1 If the conditions of normal operation are not representative also of abnormal conditions likely to be- ]1 o# |1 s( y2 j" }( r9 P9 X
encountered in actual service, the product shall not cause a risk of fire, electric shock, or injury to persons, q! S$ J5 I( W# m+ S
when operated under such abnormal conditions.( a- S4 H4 v; |. }( A% _9 f
65.1.2 The conditions resulting from abnormal operation of a product shall be confined by the enclosure8 s/ ^! D/ S5 }. v
when the product is subjected to tests such as blocked armature in a relay, transformer burnout, stalled( ~; ?& }/ s/ B- X) l8 J
rotor, operation without liquids, or other conditions that may be encountered in service.
8 Y/ X/ G3 O/ H/ w! j, }$ A65.1.3 An electrode-type product shall be operated as described in Clause 65.1.4 until ultimate results are
$ W# V1 g! N; a' B; U' C4 I8 Eobtained. The results shall not be acceptable if a nonintegral branch-circuit protector trips during the test.
. l/ i _2 I1 z8 Q/ ZAfter the test, the product shall comply with the Starting Test, Clause 55 and the Input Test, Clause 56.0 f3 B, L0 a) Y+ }2 h/ Z q
Exception: A product need not be subjected to this test if the water-level-limiting device operates for
2 e3 J7 Y/ d" t& l100,000 cycles with no mechanical or electrical malfunction or significant pitting or burning of the contacts.
3 i, X* j3 I% z& s2 ~* H1 Z) W65.1.4 The product shall be mounted as intended and connected to a source of rated voltage. The drain+ w1 x. Y& V" z, K9 U( r5 J! c
valve shall be blocked closed, the water-inlet valve blocked open, each water-level-limiting device shall4 @' [& l+ g( W
be bypassed, and the electrodes are to be electrically connected. In addition, the product shall be. `/ }. {4 t5 d' ]
mechanically and electrically isolated from any ground means. If the hardness of the water may be a
3 `+ K7 Z" e3 o6 {7 r1 kfactor, the test shall be performed with a solution of 0.5 g (0.018 oz) of calcium sulfate (CaSO4) per litre
4 l2 d S+ f2 _' y& P4 X5 h3 Fof distilled water. The product shall be operated until ultimate results are obtained.
9 T2 i. H" q( E6 E+ V3 d% l4 i1 X: Q65.1.5 A product that is permanently connected to a water supply shall be operated without water.& {$ e4 y- ]. ?1 t% i7 g8 k
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