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lds08080808 发表于 2016-9-26 09:35  . W4 b% z' }2 p- I
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 ...
! `, x* i7 Y* W& k# H% U65 Abnormal Operation Test
0 q# D4 X2 V2 D65.1 General
5 K9 |; j" u; F, E0 Q5 i+ m2 h65.1.1 If the conditions of normal operation are not representative also of abnormal conditions likely to be; b: j' J7 _& G& b) v5 U# ]
encountered in actual service, the product shall not cause a risk of fire, electric shock, or injury to persons
e4 D. ^, [# j% _when operated under such abnormal conditions.
; ?; Q, D6 _, T& _- V+ K65.1.2 The conditions resulting from abnormal operation of a product shall be confined by the enclosure
5 b- Q* W* }3 e2 x5 gwhen the product is subjected to tests such as blocked armature in a relay, transformer burnout, stalled
3 K+ p$ L$ a3 a# E2 z6 Brotor, operation without liquids, or other conditions that may be encountered in service.3 V4 F. [( m5 b5 P7 |
65.1.3 An electrode-type product shall be operated as described in Clause 65.1.4 until ultimate results are* I0 C) |1 n+ u& i" F
obtained. The results shall not be acceptable if a nonintegral branch-circuit protector trips during the test.1 q X; H' S' O s% e
After the test, the product shall comply with the Starting Test, Clause 55 and the Input Test, Clause 56.7 X- _8 _. ]4 b, q" _
Exception: A product need not be subjected to this test if the water-level-limiting device operates for
: z; {1 ^/ T; }9 E100,000 cycles with no mechanical or electrical malfunction or significant pitting or burning of the contacts./ M) z9 O2 Q) Q
65.1.4 The product shall be mounted as intended and connected to a source of rated voltage. The drain- S( }0 b3 P9 P9 P, w0 s N( X
valve shall be blocked closed, the water-inlet valve blocked open, each water-level-limiting device shall3 i% D+ x1 _# s: q! p. E
be bypassed, and the electrodes are to be electrically connected. In addition, the product shall be$ X& F& B2 m1 s& T
mechanically and electrically isolated from any ground means. If the hardness of the water may be a$ V) w( s! Q" s! }1 X7 r
factor, the test shall be performed with a solution of 0.5 g (0.018 oz) of calcium sulfate (CaSO4) per litre: B w. n! H2 ]! v( l
of distilled water. The product shall be operated until ultimate results are obtained.$ K0 ?, @ v1 [9 Y4 ~5 w0 E; H0 c# S
65.1.5 A product that is permanently connected to a water supply shall be operated without water.
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发表于 2016-9-26 08:52
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发表于 2016-9-26 08:56
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