DSH 577 Construction
http://decisions.iecee.org/icons/ecblank.gif DSH 577
Construction
22.33
60335-2-105(ed.1)
Question:
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«.
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:
- Are the parts separated with protective impedance also energized?
- Which are the insulation requirements for "Black Box"?
Decision:
This construction is acceptable if only vapour is in contact with the people inside the cabinet.
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