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lds08080808 发表于 2016-9-26 09:35 4 L' n+ C: H2 E! D/ |0 p+ V# w
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 ...
1 r0 P+ [# j9 b, u5 n+ B65 Abnormal Operation Test1 \' Q' |6 Y2 G# K9 D
65.1 General- c7 ]+ s- @4 s( v5 Y0 |2 M
65.1.1 If the conditions of normal operation are not representative also of abnormal conditions likely to be
' L5 Y8 F, E% S" z% Z, Zencountered in actual service, the product shall not cause a risk of fire, electric shock, or injury to persons) o0 `, o+ {; B" Q( j* c
when operated under such abnormal conditions.7 o% @9 h( `+ O6 U
65.1.2 The conditions resulting from abnormal operation of a product shall be confined by the enclosure% T( ?& x0 J% O' b8 a
when the product is subjected to tests such as blocked armature in a relay, transformer burnout, stalled4 [, K" D+ J4 u2 a% z
rotor, operation without liquids, or other conditions that may be encountered in service.# s# E9 Y* m0 B- A# l) _
65.1.3 An electrode-type product shall be operated as described in Clause 65.1.4 until ultimate results are# u6 Q( D# q, T# A6 w# q
obtained. The results shall not be acceptable if a nonintegral branch-circuit protector trips during the test.% D& ]) o. J' C7 j, y6 K
After the test, the product shall comply with the Starting Test, Clause 55 and the Input Test, Clause 56.
3 t1 A+ n- S% W/ J! }* CException: A product need not be subjected to this test if the water-level-limiting device operates for
1 G5 O% ^. P. K) o100,000 cycles with no mechanical or electrical malfunction or significant pitting or burning of the contacts.
: J1 \( I: }) ?; o- o% n65.1.4 The product shall be mounted as intended and connected to a source of rated voltage. The drain
/ x8 r4 b; _) O8 Fvalve shall be blocked closed, the water-inlet valve blocked open, each water-level-limiting device shall
, z' ?% r: O- T! [8 cbe bypassed, and the electrodes are to be electrically connected. In addition, the product shall be5 X* X+ ~ Z4 V" p. W0 B( H* T
mechanically and electrically isolated from any ground means. If the hardness of the water may be a
5 i0 L: [0 ~! b/ z% qfactor, the test shall be performed with a solution of 0.5 g (0.018 oz) of calcium sulfate (CaSO4) per litre
, |4 w9 z' G( }of distilled water. The product shall be operated until ultimate results are obtained. a: a4 k6 D" R# ?7 q
65.1.5 A product that is permanently connected to a water supply shall be operated without water.0 J9 l2 z* f. m' ]* P
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