Where surge protectors need to be installed
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This post was last edited by Hardmen on 2010-6-15 12:32. In a DCS system, where are surge protectors needed to be installed, or in other words, which areas require protection? For example: instruments, modules, power supplies, etc. What else?
It is generally installed at the on-site instrument itself or at the instrument’s incoming terminal.
To ensure the safe operation of the DCS system, in environments with frequent thunderstorms and severe electrical interference, surge protectors are typically installed at the AI, DI, AO, CIO, PS, and other interfaces of the DCS.
A safety barrier can be connected in the DCS; power is required
Right after the control transformer, there should be a surge. The signal cable enters from outside the building; first, a lightning protection grid should be connected, and then a safety grid. It seems that some lightning protection grids come with isolation or intrinsically safe features built in. Reference: Hongrun http://www.hrgs.com.cn/cpxx4/b3.htm
Do I need to install surge protection for both units?
It is mainly used to counter the effects of lightning on power supply systems. Mainly installed on the power supply side