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1.如图所示,IEC60950 FIGURE 5中的测量网络,中间连接L,N,PE的黑线是什么意思?如果是导线,不久将L,N,PE连接起来了吗?这样测量又有何意义呢?+ y6 B. E3 }9 c3 d- @5 Z; I
2.在接下来的5.1.5中标准中的两句话:5 R a d U' p: X) a' T0 F9 K) |
For equipment having a protective earthing connection or a FUNCTIONAL EARTHING connection,terminal A of the measuring instrument is connected via measurement switch "s" to the main
" x8 J7 L! @; Gprotective earthing terminal of the EUT, with the earthing conductor switch "e" open.7 F8 O+ Z" G9 s- w# l8 N6 |7 U( Z
The test is also conducted, on all equipment, with terminal A of the measuring network( _# _( U7 e+ t, L0 I2 I z t, Y2 |
connected via measurement switch "s" to each unearthed or non-conductive accessible part
9 v& S# B! W: h: W2 T& r; R& Jand each unearthed accessible circuit, in turn, with the earthing conductor switch "e" closed.
0 @* f1 x( `* Q+ x a* V1 H是否说明测量分为两种情况,一种是接地测量,一种是不接地测量?? |
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