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在EN60950-2005中有如下内容:
; k# W- K" @. n: m9 `4 A, [) V2.6.5.3 Disconnection of protective earth( E& ~# F0 U2 H5 c9 O1 M. ^
Protective earthing connections shall be such that disconnection of a protective earth at one
' X. c, {# L0 Tpoint in a unit or a system does not break the protective earthing connection to other parts or. j1 F& S' A' Y% _% \: v2 c0 j
units in a system, unless the relevant hazard is removed at the same time.6 |. p. L( [4 y1 @# T
' Z& X' b+ Z2 I意思就是说地线你可以接在一起,但是当你把其中一个地线断开后不能影响到别的部分的接地! c" b2 @$ a9 P8 q3 p
(protective earthing),只要不违背这个原则就可以,当然还要可靠才行。 |
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