Hi, I have a design question and would appreciate some guidance.
I’m looking at using IoTaWatt devices to monitor power consumption across 31 x 3 phase circuits. The application is for a 10 storey 50 year old apartment building in Australia. Each level has a 3 phase circuit that feeds all units on that level, plus we have a single 3 phase circuit for common building power.
So all up I will need 3 devices and 33 CTs.
We only want to monitor the 3 phase feed and not individual apartments. It’s a 50 year old building, so we want to monitor and make sure the phases are balanced, and to proactively plan and manage upgrades to each level. We are also looking at this from a safety point of view so that individual phases are not overloaded where they potentially overheat.
Now, I currently have 1 device setup as a poof of concept and have implemented for 1 level (3 x 100 AMP CTs) plus the common power (3 x 50 AMP CTs). This is working well and I can demonstrate it’s value for the Owners Corporation from a building management point of view.
So now I am about to purchase another 2 devices and all required CTs to complete the project.
From a configuration point of view, would it make sense to assign each device to a phase? In other words I split the 3 phases across the 3 devices. So 1 device would be Red circuits, 1 for the White circuits, and the other for the Blue circuits? This would be handy as then I only need a single VT for each device.