In terms of sizing, distribution transformers are sized according to which parameter?

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Multiple Choice

In terms of sizing, distribution transformers are sized according to which parameter?

Sizing a distribution transformer centers on how much apparent power it can deliver at its rated voltage. That apparent power is the product of voltage and current, and it must accommodate loads with varying power factors. Because power factor can change, engineers use kilovolt-amperes (kVA) as the sizing unit—it reflects capacity independent of PF. The voltage rating alone doesn’t tell you how much power the transformer can handle, and amperes by themselves depend on the voltage and the load. VA expresses the same idea as apparent power, but for larger distribution transformers the standard practice is to specify the rating in kilovolt-amperes.

Sizing a distribution transformer centers on how much apparent power it can deliver at its rated voltage. That apparent power is the product of voltage and current, and it must accommodate loads with varying power factors. Because power factor can change, engineers use kilovolt-amperes (kVA) as the sizing unit—it reflects capacity independent of PF. The voltage rating alone doesn’t tell you how much power the transformer can handle, and amperes by themselves depend on the voltage and the load. VA expresses the same idea as apparent power, but for larger distribution transformers the standard practice is to specify the rating in kilovolt-amperes.

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