Transformer Load Factor Analyzer — Compare Average and Peak Loading
See how consistently a transformer is loaded and how much of its rated kVA is being used at both average and peak operating conditions.
Transformer load inputs
What transformer load factor tells you
Transformer load factor describes the relationship between average and peak demand during the period you are studying. A high load factor means the transformer spends more of the period near its peak, while a low load factor indicates a more variable load profile.
Load factor is not the same as utilization
A transformer could have a 73% load factor while its peak is 85% of rated capacity. The first figure describes consistency; the second describes how much of the transformer rating is being used.
Why average and peak should both be shown
Average demand is useful for energy and operational analysis, while peak demand can be more important for capacity planning. Looking at only one can hide the other.
Worked example
A 1,000 kVA transformer with 620 kVA average load and 850 kVA peak load has a load factor of about 72.9%. Peak utilization is 85% of rating.
Limitations
The tool does not calculate temperature rise, hot-spot behavior, diversity, harmonic effects or manufacturer thermal limits.
Frequently asked questions
Can load factor exceed 100%?
Not under internally consistent average and peak measurements.
Does a low load factor automatically mean the transformer is oversized?
No. Project peaks, reliability requirements and future expansion can justify capacity that is not constantly used.
Can I use measured kVA?
Yes. Measured data is useful when its observation period and operating conditions are understood.