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|  DSH 508
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0 Q" R, n" U+ v$ M6 u+ S3 f1 L | Moisture resistance" ? w5 Q" z, U* b& ^
| 15.1.2/ E; l& m" d) N x: L
| 60335-1(ed.3)6 s, G) w. Y1 s/ e$ h- l
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& r, u) f0 A2 [: G2 D0 CQuestion:
- k4 l0 P9 U8 IWhat are the test conditions for appliances that are normally ceiling mounted ?3 g" v& l9 Y0 [& V
Rationale:: s! r# a* N; x! L! {. Z6 b0 W
See question.
9 v9 l. Y7 g+ g$ jDecision:
% q/ [0 S4 |% L! ]# V& D- gCeiling mounted appliances are mounted in accordance with IEC 60335-1/1991, sub-clause; p6 z) }, e0 r3 u3 Z/ r) R
15.1.2, as for appliances fixed to a wall. Ceiling mounted appliances are mounted in their) T/ O% \5 _* W" I8 {0 C
operating position. The rear part shall be covered and sealed around the mounting plate." a+ b7 i; U7 V
The requirements for IPX4 are checked in accordance with IEC 60529, sub-clause 14.2.4.
$ V3 H/ e1 E0 P' o3 s7 V2 J4 kThe requirements for IPX3 are checked in accordance with IEC 60529, sub-clause 14.2.3," H! Q( F2 b4 @! F% J
but the oscillating tube is oscillated as for IPX4, detailed in IEC 60529, sub-clause 14.2.4./ H9 k2 o1 q5 @& x( c+ R4 O4 R
Alternatively, IPX3 and IPX4 requirements can be made using figure 5 of IEC 60529.7 q: E3 d+ t' Y! T* O( T T
IPX2 requirements are not applicable for ceiling mounted appliances.8 P, U; m0 s6 ?9 c8 Q% T
o+ e. R1 v: M; {1 Z3 F
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