Meter Date Showing larger peak current in one phase

[Redskinsdb21]

Hello All,

I have a question. I have a meter that is showing the peak current in phase B to be double that of peak current phase A & C. Does anyone know what may cause this? In phase B its 190 Amps approximately while in A * C the peak was about 95.

 

[bacon4life]

Do you have reason to think the loads are balanced across phases? Perhaps there is twice as much load connected to B phase?

 

[waross]

Is the meter showing the energization current of a transformer? One phase is often subject to DC offset and that may be almost as much as 2 times the other phase peaks.

--------------------
Ohm's law
Not just a good idea;
It's the LAW!

 

[Redskinsdb21]

bacon4life (Electrical)22 Oct 24 16:12
Do you have reason to think the loads are balanced across phases? Perhaps there is twice as much load connected to B phase?

Do you think its possibly due to imbalanced loads? The value is approximately 50 Amp peak in phases A & C but 100 in phase B. However, the averages for the last month are about the same for all 3 phases.

 

[Redskinsdb21]

waross (Electrical)22 Oct 24 16:33
Is the meter showing the energization current of a transformer? One phase is often subject to DC offset and that may be almost as much as 2 times the other phase peaks.

I looked and did not see anywhere the meter may be showing energization current of Xfmr. The DC offset would take place during energization only correct?

 

[waross]

Is this single family residential?
Multi family residential?
Commercial?
Industrial?
Utility meter or customer owned meter?
What type of loads?
What type of peak meter? eg: Instantaneous reading or demand reading?

--------------------
Ohm's law
Not just a good idea;
It's the LAW!

 

[unclebob]

Along with the currents readings, can you show us the phase angles of said currents?