Multiple CTs per line

[tallgirl]

Are there any measurement issues that would be caused by having multiple CTs on the same line? I've gotten purchasing approval for yet another energy meter and don't want stray magnetic fields making a mess of things.

 

[masterinbama]

I have placed Multilin CT's in the same area as metering CT's with no noticeable interference

 

[jdsmith]

Nothing to worry about - the magnetic permeability of silicon steel used in CTs is 6-8000 times the permeability of air, meaning the magnetic flux is going to pretty much stay in the CT core unless the core gets saturated. Multiple sets of CTs for protection and/or metering purposes are installed right next to each other every day in MV metal clad switchgear and inside oil filled transformer tanks.

 

[tallgirl]

Thanks for the responses. I doubt I'll add a 3rd meter to the array, but now I feel better if the sales and marketing people give me permission to squander more money.