关于强电桥架对弱电的干扰问题讨论...

<P><BR>      有一个综合布线项目发生在一幢大厦内。大厦为商住楼，规模有27个楼面高。大厦的一楼裙房和二十楼为我的客户所租用，因此需要用三类线将其语音电话系统连接起来，还要放监控视频线。</P>
<P>      可是从二十楼到一楼裙房一定要通过地下一楼的一间大强电间。在强电间内有两个很大的柜子，好象写着低压配电的字样，在柜子的上方，有一根约为500X300的金属强电桥架横穿整个强电间，而我的三类线和监控视频线就是离强电桥架大概7cm的距离，沿着强电桥架一起穿墙出去的。在不破坏大楼结构的情况下，只有这一条路可走，物业也只允许走这一条路。</P>
<P>       所以想问问各位，我的三类线和监控视频线受到强电干扰的影响大不大？对工程的质量会不会有很大的影响（主要是指电话和监控图象）？我用的三类线是AMP的UTP三类100对大对数线缆，听说质量很好，绞对很好，不知道能不能抵抗外部的电磁干扰？另外，是不是强电对弱电的干扰主要就是电磁干扰？fluke仪器能不能测试出或者看出这种干扰？如果不能测试出来，能不能有什么办法可以表现出干扰的情况？</P>
<P>       最后，有没有什么解决的办法？比如包铝箔等方法？好象在这个论坛，或者说在现在的布线界，强电对弱电的干扰，大家谈得不是很多？谢谢各位帮忙讨论了！</P>

顶!

<P>综合布线有相应的规范,你自己套吧。虽然设计施工不按规范走的情况时有发生，但不按规范走后果就很难预料了。</P>
<P center" align=center><B>表11.0.2-1 综合布线电缆与电力电缆的间距 </B></P>
<P>
<TABLE medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-border-alt: solid windowtext .5pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt" cellSpacing=0 cellPadding=0 border=1>

<TR>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 4cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt" vAlign=top width=151>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>类  别<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 189pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=252>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>与综合布线接近状况<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>最小净距(mm)<o:p></o:p></P></TD></TR>
<TR avoid">
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 4cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=151 rowSpan=3>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>380V电力电缆<o:p></o:p></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>&lt;2kV.A<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 189pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=252>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>与缆线平行敷设<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>130<o:p></o:p></P></TD></TR>
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<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 189pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=252>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>有一方在接地的金属线槽或钢管中<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>70<o:p></o:p></P></TD></TR>
<TR 6pt; page-break-inside: avoid">
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 189pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 6pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=252>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 6.0pt" align=center>双方都在接地的金属线槽或钢管中<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 6pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 6.0pt" align=center>10<o:p></o:p></P></TD></TR>
<TR avoid">
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 4cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=151 rowSpan=3>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>380V电力电缆<o:p></o:p></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>2~5kV.A<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 189pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=252>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>与缆线平行敷设<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>300<o:p></o:p></P></TD></TR>
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<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>有一方在接地的金属线槽或钢管中<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>150<o:p></o:p></P></TD></TR>
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<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 189pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=252>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>双方都在接地的金属线槽或钢管中<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>80<o:p></o:p></P></TD></TR>
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<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 4cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=151 rowSpan=3>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>380V电力电缆<o:p></o:p></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>&gt;5kV.A<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 189pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=252>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>与缆线平行敷设<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>600<o:p></o:p></P></TD></TR>
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<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>有一方在接地的金属线槽或钢管中<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>300<o:p></o:p></P></TD></TR>
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<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>双方都在接地的金属线槽钢管中<o:p></o:p></P></TD>
<TD windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 123.7pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=165>
<P 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-alt: 10.0pt" align=center>150<o:p></o:p></P></TD></TR></TABLE></P>

我主要是想问一下会不会对电话有什么影响，比如电话铃声和电话噪音？

<P>应该会有一些影响吧，但仅仅是电话，低压配电的桥架不会有太大的干扰。</P>

问题不大，SYV75-x 用双屏蔽的应该没什么问题

高手太少了，继续顶：）

<P>  电话有点影响，接打电话时可能会有较大的电流声音，监控图像如果视频线用的是128编以下并且是单层的屏蔽层的话可能会出现画面抖动现象，fulke测试不出来。</P>
<P>市场上的抗干扰器可以试试起不起作用，我原来试过，效果能好些！！</P>

不是金属线糟,而是PVC管糟的话.各自的距离标准应该有吧.楼主能也一起提供吗?

<P>其实很简单，如果你整个布线系统是布放在桥架中的，只要强弱电桥架没碰上，就根本没有任何影响，因为对于一个由金属形成的空间里，金属所包含的东西不受电荷影响，也就是说，如果是在有强电及弱电桥架存在的大楼里，它们之间的距离是没有任何影响的，如果你的桥架又做了很好接地的话，，那就一点问题　也没有的。放心布放就是了。但在没有桥架的地方还是要注意的。交叉没有关系，对线的影响不大，我所说的影响是指在拿FLUCK测试时的影响，也就是说如果只是使用是一点影响也没有的。如果拿设备测，值是有变化的，但这个值　是安全的值　。如果是平行布线，，就要注意了，强弱电是有影响的，一定要小心，一般说没有380的动力电的情况下，30￣50公分足就行了，但是要记住，平行不能超过15米。</P>