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lds08080808 发表于 2016-9-26 09:35 * h) ]; z- e 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 ...
4 r- ^1 g1 T' F- G; |8 G65 Abnormal Operation Test
7 g" c, A, u* C65.1 General8 B# t' T+ z$ I' v! P. B* C& b: z
65.1.1 If the conditions of normal operation are not representative also of abnormal conditions likely to be2 P) J z* }/ n) I2 L
encountered in actual service, the product shall not cause a risk of fire, electric shock, or injury to persons
5 ]2 @! G) h8 r" l9 w- I' i: s; k3 mwhen operated under such abnormal conditions.5 n, I# ~$ [# M6 n; e' }
65.1.2 The conditions resulting from abnormal operation of a product shall be confined by the enclosure
* v; W$ t) {' }$ f9 Kwhen the product is subjected to tests such as blocked armature in a relay, transformer burnout, stalled
- C: R+ o% e. t- B6 t# brotor, operation without liquids, or other conditions that may be encountered in service.
. o" |6 w/ m" P; o& ?" {65.1.3 An electrode-type product shall be operated as described in Clause 65.1.4 until ultimate results are% i/ D6 \8 Y- P- G, h/ f
obtained. The results shall not be acceptable if a nonintegral branch-circuit protector trips during the test.
% [7 B4 H, r" t% U: ?6 X( q7 qAfter the test, the product shall comply with the Starting Test, Clause 55 and the Input Test, Clause 56.5 G$ k' B; J/ _& o
Exception: A product need not be subjected to this test if the water-level-limiting device operates for
, _8 r7 d2 j3 Y( ~100,000 cycles with no mechanical or electrical malfunction or significant pitting or burning of the contacts.! O0 }4 ~6 y2 s7 ]' ]6 x- J
65.1.4 The product shall be mounted as intended and connected to a source of rated voltage. The drain; j) }& U/ _: V. _
valve shall be blocked closed, the water-inlet valve blocked open, each water-level-limiting device shall
" O1 }- e B1 A& _4 x5 m; w$ Bbe bypassed, and the electrodes are to be electrically connected. In addition, the product shall be
8 N; O5 ?# o' f7 \+ y1 P& k! t6 [! `mechanically and electrically isolated from any ground means. If the hardness of the water may be a
+ v- }/ F) u- C. S; t! _factor, the test shall be performed with a solution of 0.5 g (0.018 oz) of calcium sulfate (CaSO4) per litre f; b/ W2 u* |6 g* R% i/ F
of distilled water. The product shall be operated until ultimate results are obtained.% v3 W5 A6 S7 y2 ~( a' Y9 d4 e" a
65.1.5 A product that is permanently connected to a water supply shall be operated without water.5 B, V; G9 m* y; ^# C3 V$ m
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