DSH 610 Construction

小米

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

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 610 1 n! ], _) C6 x! X3 M+ Q1 y0 f

Construction - k* w8 N4 M  v% {

22.21 and 22.32

60335-1(ed.4)

  H: s( M- m) e8 [0 q: IQuestion:
A oil filled room heater of Class II has a heating element in class II construction. This construction consists of two layers of independent insulation of magnesium oxide which will be used as basic and supplementary insulation. According to note 2 of clause 22.21 magnesium oxide will be not considered as hygroscopic material. The magnesium oxide is tightly sintered and in line with the tests of sub-clause 22.32 . The end of the heating element (side of the connectors) is protected by a sealing against moisture.
Is this construction acceptable because in line with sub-clauses. 22.21 and 22.32?
* x( R0 W  k" A$ x8 q1 T4 ?Decision:
Yes, the construction proposed is acceptable because in line with the standard.
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