DSH 508 Moisture resistance

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广东安规检测
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小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

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可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 508 : f. ~0 J. G5 i5 S% L5 {+ G

Moisture resistance

15.1.2

60335-1(ed.3)

Question:
. _3 W+ u3 a) j( J; T# t8 A1 s6 DWhat are the test conditions for appliances that are normally ceiling mounted ?
  z. S8 I7 Y7 c, c( d- f) _8 nRationale:
& j4 b7 R4 j: v. \1 K$ h( nSee question.
% g3 [- J4 W& W! f# i9 J6 a: o5 b, H. @Decision:
Ceiling mounted appliances are mounted in accordance with IEC 60335-1/1991, sub-clause
15.1.2, as for appliances fixed to a wall. Ceiling mounted appliances are mounted in their
$ K; L; j" F) w. E: F5 J1 v, l% Zoperating position. The rear part shall be covered and sealed around the mounting plate.
The requirements for IPX4 are checked in accordance with IEC 60529, sub-clause 14.2.4.
' f0 y2 v) Z4 b. X$ p8 {. u! J& BThe requirements for IPX3 are checked in accordance with IEC 60529, sub-clause 14.2.3,
but the oscillating tube is oscillated as for IPX4, detailed in IEC 60529, sub-clause 14.2.4.
' M$ g' E* j; [8 f$ M1 y6 l) bAlternatively, IPX3 and IPX4 requirements can be made using figure 5 of IEC 60529.
5 m8 e. r4 {' K! KIPX2 requirements are not applicable for ceiling mounted appliances.

; B6 x3 P4 C8 v. }