Power monitoring formulas

PhilU · Post by **PhilU** » Wed Oct 28, 2020 9:47 am

I am starting an energy monitoring and targeting project across our site and have found we have a CM3 current logger. I have this set up on now along with the PicoLog software and all is working fine. We have the kit with 200A clip on current transformers. The intention is to have this connected via a thin client pc and then wireless to the compnay network as we won't have ethernet ports close to the power supply areas.

I would like to add some math channels to record power per phase and total power for three phase supplies in kW and and kWh over a time period I would set in the capture settings (for example a 24 hour period for lighting monitoring). Some areas have an imbalance of load across the three phases. Are there some standard formulae I can add in math channels to record this data?

I am new to the system so any help would be greatly appreciated.

Post by **AndrewA** » Fri Oct 30, 2020 2:10 pm

This feature not supported in Picolog 6 supported, and would require a differentiation maths function to work.
This is a new feature which is commonly requested for Picolog 6 not just measuring energy (KWh).
I will add your details to the feature request.

PhilU · Post by **PhilU** » Tue Nov 17, 2020 2:57 pm

Thank you.

I know for single phase it's quite straight forward and I can add simple math channel W=V x A for those and I also have a formula for three phase although the results taken from just the 3ph current readings can be affected by the load type (induction motors, VFD's etc) but at least I can get some sight of power demands as a beginning of my energy monitoring journey

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Power monitoring formulas

Power monitoring formulas

Re: Power monitoring formulas

Re: Power monitoring formulas