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|  DSH 577/ K6 _! g4 @! U2 t0 p" X
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| Construction% k+ @0 w4 [* g4 |0 d4 k, q5 x
| 22.332 Q( J* u, _4 c5 R$ {; T
| 60335-2-105(ed.1)
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Question:! k; U1 q' ?9 ~) k1 n. q
Performing 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«.% I8 c- ?6 J. z: X
Since 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:
' ]3 g: M& r/ @$ j( M' k- Are the parts separated with protective impedance also energized?7 d" m& k2 ^$ r
- Which are the insulation requirements for "Black Box"?
" H1 K: j! U8 E* Q# b: b. |9 F' v- @Decision:
5 B" s8 w' F3 n$ @( V+ p/ ~/ @This construction is acceptable if only vapour is in contact with the people inside the cabinet.+ }& Q5 [; n1 x: V$ _9 ^3 S
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发表于 2012-9-8 20:22
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