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lds08080808 发表于 2016-9-26 09:35
1 |1 f8 l. C K3 C9 U. E9 l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 u& ~- W/ t0 ]8 ?
65 Abnormal Operation Test
5 h+ o8 s" k! q5 O65.1 General
$ t- E! f% Z* m- ^( X+ N* ]. u65.1.1 If the conditions of normal operation are not representative also of abnormal conditions likely to be( r6 ^& c' h% V' l" Q
encountered in actual service, the product shall not cause a risk of fire, electric shock, or injury to persons4 u0 I H+ m* Y6 b% m
when operated under such abnormal conditions.9 `1 f+ k# d8 R% @/ ~
65.1.2 The conditions resulting from abnormal operation of a product shall be confined by the enclosure
]0 V9 _ z0 ?$ i1 C% t. s- Wwhen the product is subjected to tests such as blocked armature in a relay, transformer burnout, stalled
5 C9 u: H1 A9 o2 Arotor, operation without liquids, or other conditions that may be encountered in service.% v0 r' ~4 s( I) v) v0 J& }
65.1.3 An electrode-type product shall be operated as described in Clause 65.1.4 until ultimate results are: e: m, L6 j @( Q$ q
obtained. The results shall not be acceptable if a nonintegral branch-circuit protector trips during the test.
3 U! I$ j; E7 m3 n5 cAfter the test, the product shall comply with the Starting Test, Clause 55 and the Input Test, Clause 56.: W" Z u, z+ x
Exception: A product need not be subjected to this test if the water-level-limiting device operates for
4 u7 L: ^9 D, e1 X( l! B100,000 cycles with no mechanical or electrical malfunction or significant pitting or burning of the contacts.
P, L9 J) P* [65.1.4 The product shall be mounted as intended and connected to a source of rated voltage. The drain
, G8 T# Q& c, d: \; Gvalve shall be blocked closed, the water-inlet valve blocked open, each water-level-limiting device shall
2 c$ `$ T1 j' abe bypassed, and the electrodes are to be electrically connected. In addition, the product shall be
9 E: c& S/ X7 P8 t! T4 P+ fmechanically and electrically isolated from any ground means. If the hardness of the water may be a- v0 t5 e7 m4 N5 ~5 P: `
factor, the test shall be performed with a solution of 0.5 g (0.018 oz) of calcium sulfate (CaSO4) per litre
% q& ?0 Q" S" a# i2 m# I4 Z2 O; i# z: dof distilled water. The product shall be operated until ultimate results are obtained.; f% `( h- r- M# J
65.1.5 A product that is permanently connected to a water supply shall be operated without water." m3 q4 `, U2 ?& N
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