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标题: DSH 649 Provision for earthing [打印本页]

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作者: 小米    时间: 2012-9-8 15:18
标题: DSH 649 Provision for earthing

DSH 649 2 V: W9 `' w2 S$ M0 z' V+ `( Y " \- G% N- T- q6 l. T

Provision for earthing - V, G/ A6 A, E( X" C. _2 J

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Question:
0 h) Q6 ^7 K! O) ?Can a ball-bearing be considered as a reliable connection to earthed metal parts such as a motor shaft? According to CTL DSH 263 it is not accepted for electric tools
7 [9 j7 E6 F- A9 }4 BDecision:
8 C1 |1 R7 ]& a3 m/ |( P5 X7 z7 iA ball - bearing can be considered as a reliable earth connection for household appliances if it complies with earthing requirements of the standard.

7 j8 E/ L! m$ f( }8 L[attach]75722[/attach]

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