PowerTag A9MEM1570

[Patrick_Grehan]

Hi all,

Is it possible to use A9MEM1570 (3P + N) as a substitute for A9MEM15703 (3P) with neutral not connected? - Any feedback is appreciated.

Thanks.

[Jesus_Diaz]

Hi @Patrick_Grehan ,

Without information about the location and installation of the PowerTag (PTag) and assuming it is a 3P +N system, we can make the following observations:

• When the neutral is not connected (on load and PowerTag), the data by phase will be incorrect if the phases are not well balanced, but the total power/energies will be accurate.
• When the neutral is connected on loads but PowerTag is not connected to neutral, then if the phases are not well balanced, the total power/energies will be incorrect (because even though we are monitoring the current, the voltage vector sum cannot be accurate as the neutral voltage is missing).

Best Regards,

JD

[Patrick_Grehan]

Hi @Jesus_Diaz 

Thanks for your response - to clarify, my question was around using the PTag on a 3P load (no neutral). Installing the 3P+N PowerTag (A9MEM1570) without the neutral connected, as per your comment above, may see some inaccuracy in phase data (if unbalanced) but overall power / energy data will be accurate. Have I summarised your response accurately?

Thanks,

PG 

[Jesus_Diaz]

Hi @Patrick_Grehan,

Yes, this will fall under the first case: when the neutral is not connected (on load and PowerTag), the data by phase will be incorrect if the phases are not well balanced, but the total power/energies will be accurate.

Regards,

JD

[Romain_Polette]

Hello @Patrick_Grehan , 

What are you going to do with the Neutral connector of your PowerTag F63 ?

Regards, 

[Patrick_Grehan]

Hi Romain,

The neutral would not be connected and insulated. My question is basically if it's appropriate to do this.

Thanks,

PG