I had a contractor monitor the load on an ATS. They sent me the data, but there are a couple of things I don't understand.
Each voltage and current has three graphs. One labeled "high", one labeled "mid", and one labeled "low". For example, there are three graphs for the Phase 2 current - high, mid, and low. Are these just differences in how the meter averages the input?
The contractor had the meter set up for a delta system, even though this was a 3 wire wye system. Would that affect the current readings in any way? A 400 amp reading on the meter should still mean 400 amps, correct?
Finally, for some reason, the meter didn't record the 3rd phase voltage or current. Could this be because the meter was set for a delta system?
Thanks.
Each voltage and current has three graphs. One labeled "high", one labeled "mid", and one labeled "low". For example, there are three graphs for the Phase 2 current - high, mid, and low. Are these just differences in how the meter averages the input?
The contractor had the meter set up for a delta system, even though this was a 3 wire wye system. Would that affect the current readings in any way? A 400 amp reading on the meter should still mean 400 amps, correct?
Finally, for some reason, the meter didn't record the 3rd phase voltage or current. Could this be because the meter was set for a delta system?
Thanks.