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|  DSH 577
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| Construction
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| 60335-2-105(ed.1)
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Question:
# n/ }2 S ^# ?7 `! O( g1 \7 A2 QPerforming the a test on multifunction shower cabinet with a vaporiser according to IEC 60335-2-105 requirements, level sensor of the vaporiser is in a direct contact with water as well as earthed metal enclosure of a vaporiser. According to the requirement of-sub-clause 22.33 conductive liquids which are accessible in normal-use shall not be in direct contact with live parts. Any energized part is considered to be a live part regardless of the voltage. Level sensor is connected to SELV parts over »Black Box«.
" }! i$ T# l* J% D: v. b* TSince the is some doubts that the actual requirement of the sub-clause 22.33 spatially wording "not be in direct contact with live parts including SELV parts" and "energized" in our case over "Black Box" is fulfilled:& [# c* u0 L' A, ?
- Are the parts separated with protective impedance also energized?
& g* ~8 ~7 `8 G$ Y5 @- Which are the insulation requirements for "Black Box"?' x/ k0 Z1 P ~+ B: z, x. h
Decision:2 U3 T8 S, d5 l" Z7 s7 s4 V, {
This construction is acceptable if only vapour is in contact with the people inside the cabinet.
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发表于 2012-9-8 20:22
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