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lds08080808 发表于 2016-9-26 09:35
( n! s) a% W" y0 e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 ...
9 k; k+ U3 v: S) e65 Abnormal Operation Test
) c8 F, f( x3 e65.1 General
8 E1 O( C/ \* `" {! M. Y65.1.1 If the conditions of normal operation are not representative also of abnormal conditions likely to be
; } s4 {2 z7 _0 U/ X' e/ |+ ]encountered in actual service, the product shall not cause a risk of fire, electric shock, or injury to persons- @6 j1 X* R" b/ ~. u% A
when operated under such abnormal conditions.* D4 F5 a- Q* _: @
65.1.2 The conditions resulting from abnormal operation of a product shall be confined by the enclosure S* W& t. E0 K& m: Y1 W2 ]$ E- H
when the product is subjected to tests such as blocked armature in a relay, transformer burnout, stalled
# s' M, r+ O1 D& J. {: n) Arotor, operation without liquids, or other conditions that may be encountered in service.
- C8 }7 U$ E4 x: ] V" P! W1 y65.1.3 An electrode-type product shall be operated as described in Clause 65.1.4 until ultimate results are; ?" _$ L' i$ b& F- m7 n1 q# |
obtained. The results shall not be acceptable if a nonintegral branch-circuit protector trips during the test.. W8 Q4 v" ~4 y# H* d/ O
After the test, the product shall comply with the Starting Test, Clause 55 and the Input Test, Clause 56.
4 ]3 R; N/ g* \6 {5 OException: A product need not be subjected to this test if the water-level-limiting device operates for
8 d4 R# g& Z7 C/ W1 s+ r" h100,000 cycles with no mechanical or electrical malfunction or significant pitting or burning of the contacts.- I; h# ~4 r" X3 m4 R( E5 u
65.1.4 The product shall be mounted as intended and connected to a source of rated voltage. The drain/ f. O2 t, [* q
valve shall be blocked closed, the water-inlet valve blocked open, each water-level-limiting device shall0 \# J$ Y$ O/ ~
be bypassed, and the electrodes are to be electrically connected. In addition, the product shall be
- h/ c- q4 C. w$ |) r5 l& ~mechanically and electrically isolated from any ground means. If the hardness of the water may be a
. W1 X" f6 u9 h* Sfactor, the test shall be performed with a solution of 0.5 g (0.018 oz) of calcium sulfate (CaSO4) per litre: g7 s4 v- a6 y) s# e; t+ ?
of distilled water. The product shall be operated until ultimate results are obtained.
}. W4 j2 P Y& T65.1.5 A product that is permanently connected to a water supply shall be operated without water.- f" I/ \1 {! d6 p8 y% S, d
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