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I'm working for Instrument installation in NPP construction Project.
During the site work, one thing is puzzled me.
For all level 0 signals are transmitted by copper wires which cross-section is 1.0 square milimeter even 1.5 square milimeter. So, one problem is appeared, the Cable Tray is full. In our Chinese national standard, the minimum of copper wires' cross-section is 0.5 suqare milimeter. I have collect the part of level 0 signals, some of them is 4-20mA, 12-36VDC, so I think it's too big. I hope someone can help me how to analysis and design the wires' cross-section according to the signal specification.
If you have any suggestion, please contact me. E-mail address: [email protected]
Your any information would be appreciated.
During the site work, one thing is puzzled me.
For all level 0 signals are transmitted by copper wires which cross-section is 1.0 square milimeter even 1.5 square milimeter. So, one problem is appeared, the Cable Tray is full. In our Chinese national standard, the minimum of copper wires' cross-section is 0.5 suqare milimeter. I have collect the part of level 0 signals, some of them is 4-20mA, 12-36VDC, so I think it's too big. I hope someone can help me how to analysis and design the wires' cross-section according to the signal specification.
If you have any suggestion, please contact me. E-mail address: [email protected]
Your any information would be appreciated.