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Question:
' d3 m0 e( H5 L/ F/ S O2 g1 VWhat are the test conditions for appliances that are normally ceiling mounted ? j+ E5 Q" r& X x. N& C3 q* M
Rationale:
* g G4 V% z4 h. {& ?See question.
% H* i& W* O5 ^, c9 d' h" E2 q& TDecision:
7 V: L) n+ T5 G& vCeiling mounted appliances are mounted in accordance with IEC 60335-1/1991, sub-clause
- ~" `3 q3 y3 J9 X* A15.1.2, as for appliances fixed to a wall. Ceiling mounted appliances are mounted in their
. O9 T; G0 e- ~( Poperating position. The rear part shall be covered and sealed around the mounting plate.
2 h! [7 s4 n6 G* GThe requirements for IPX4 are checked in accordance with IEC 60529, sub-clause 14.2.4.0 N# Z4 R: S6 i9 k: N; \
The requirements for IPX3 are checked in accordance with IEC 60529, sub-clause 14.2.3,, k8 J& y, `+ C% a- z' m) s2 \5 f
but the oscillating tube is oscillated as for IPX4, detailed in IEC 60529, sub-clause 14.2.4.! p" r1 L5 s: ~9 f
Alternatively, IPX3 and IPX4 requirements can be made using figure 5 of IEC 60529.
6 L+ H7 v( L5 W7 b) o1 ?; BIPX2 requirements are not applicable for ceiling mounted appliances.: g& }/ G# C# g* t4 G! t. f2 S
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发表于 2012-9-9 17:23
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