ION8650 9/29/36S in a 36S Base

Nicholas_Brown · ‎2022-03-02

Hi, My customer is questioning if the ION8650 in a 36S base will show all phase related reading similar to a 9S base. I know for a 36S base, the B phase voltage is not wired, but my assumption is the Vbn and kWb will be calculated. Is this correct or are there limitations when placed in a 36S base. Thanks.

Charles_Murison · ‎2022-03-03

Hello @Nicholas_Brown ,

As long at the meter's Volts mode 36S - 4 Wire Wye is selected, yes the B phase voltage and power will be calculated. Vb = -(Va+Vc).

Regards,

Charles

L4 Prime for Advanced metering and Utilities

See Answer In Context

Charles_Murison · ‎2022-03-03

Hello @Nicholas_Brown ,

As long at the meter's Volts mode 36S - 4 Wire Wye is selected, yes the B phase voltage and power will be calculated. Vb = -(Va+Vc).

Regards,

Charles

L4 Prime for Advanced metering and Utilities

DanL · ‎2022-03-03

Yes.
The ION8650 in volts mode "36S - 4 Wire Wye" (with 2 PTs) presumes the Zero sequence symmetrical component magnitude = 0.
The meter computes the "B phase" instantaneous voltage (ie. waveform) as Vbn = -(Van + Vcn)

The meter computes the "B phase" instantaneous power as Pb = -(Van x Ib + Vcn x Ib) = Vbn x Ib

Nicholas_Brown · ‎2022-03-03

Thank you for your reply, I appreciate the help.