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 + m" u  n0 N6 A) Y) f$ @

Construction 4 S; t  L+ H0 R8 m

22.21 and 22.32 # |- T2 n0 o. ?# h5 G# r4 F8 O

60335-1(ed.4) : s+ R4 t" j0 V& P8 V+ @2 Z- ~

% |! O7 o, \! r* v. X' nQuestion:
$ a9 ?" m: X! w; {2 N8 C# FA 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?
2 G  e9 N, f4 Q8 A! t- ~Decision:
Yes, the construction proposed is acceptable because in line with the standard.
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