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lds08080808 发表于 2016-9-26 09:35
' t+ S: l' Y$ N( x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 ...
' R' l) \. h: I% e9 R& C- D, C* Y65 Abnormal Operation Test
8 Q4 G. g: g4 ^+ v8 M9 [65.1 General4 o( |4 |. c4 ^6 K8 O
65.1.1 If the conditions of normal operation are not representative also of abnormal conditions likely to be, c! k, M& \' Y, j1 F+ ^
encountered in actual service, the product shall not cause a risk of fire, electric shock, or injury to persons m0 E6 |9 F9 S( ]! F3 u1 ]
when operated under such abnormal conditions. R# L, W4 f: j# Q4 \
65.1.2 The conditions resulting from abnormal operation of a product shall be confined by the enclosure
/ J/ I7 k) x8 P4 F' p8 u+ t+ i* N0 j zwhen the product is subjected to tests such as blocked armature in a relay, transformer burnout, stalled
7 K. ^9 O* B- [6 C1 M1 p# W) Jrotor, operation without liquids, or other conditions that may be encountered in service., ?0 Y3 \+ u, Z6 H ~% P$ h0 ~/ y" l
65.1.3 An electrode-type product shall be operated as described in Clause 65.1.4 until ultimate results are
% \8 e3 y6 p* C, }obtained. The results shall not be acceptable if a nonintegral branch-circuit protector trips during the test.
: i0 P- s6 D4 d2 H( i7 kAfter the test, the product shall comply with the Starting Test, Clause 55 and the Input Test, Clause 56.
2 h A" u5 ]6 V2 QException: A product need not be subjected to this test if the water-level-limiting device operates for
T5 Q0 P, v6 p. `0 N. @) ~100,000 cycles with no mechanical or electrical malfunction or significant pitting or burning of the contacts.: Z9 L W; D2 f) `1 `. k
65.1.4 The product shall be mounted as intended and connected to a source of rated voltage. The drain; v( f1 s8 h& N( o4 r3 s
valve shall be blocked closed, the water-inlet valve blocked open, each water-level-limiting device shall. Y. Z, z# l2 p, l5 X, X7 Y G# Q
be bypassed, and the electrodes are to be electrically connected. In addition, the product shall be
: [ R7 p& t: [& S) L* C smechanically and electrically isolated from any ground means. If the hardness of the water may be a& d/ {0 x( c2 w& W, B
factor, the test shall be performed with a solution of 0.5 g (0.018 oz) of calcium sulfate (CaSO4) per litre( P, ?# t& ~' M* z
of distilled water. The product shall be operated until ultimate results are obtained.% u6 g3 U7 F2 Z* X7 w, D
65.1.5 A product that is permanently connected to a water supply shall be operated without water.! t: A9 ~ u7 r/ |
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