In the attached PDF, I am showing recorded data of a system during normal operation. The data was recorded over the course of a month to determine possible reasoning for voltage drop issues the client has been experiencing. If anyone would like, I would be happy to share more date, but if you look at the attached PDF, I have concerns about large gap with between the kW and KVA numbers. During warmer days with heavier loads operating, the gap is closer to a more expected value. This is an older school. Several older stepdown transformers throughout the building. Any ideas? I have a few theories, but it would have to get back out in the field for more testing.
kVA & kW relationship
- Thread starter Rock86
- Start date
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Senior Member
- Location
- New York, 40.7514,-73.9925
Average kW and kVA over long periods may not give you good data to compare (when the average is calculated over a long period), but pf of 0.9 is reasonable. Maybe the meter can show you the graph of calculated instantaneous pf?
If you are focused on voltage drop, you will want the kVA value which is going to provide you with the current for evaluation.
If you are focused on voltage drop, you will want the kVA value which is going to provide you with the current for evaluation.