Transformer Sizing Calculator vs Transformer Losses Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
Transformer Sizing Calculator
Determine the minimum transformer kVA rating needed for a given electrical load, accounting for demand factor, power factor, safety margin, and ambient temperature derating. Use this when specifying or replacing distribution transformers on new or existing electrical systems.
- Answers
- Required Transformer Size (kVA)
- Inputs
- Total Connected Load, Demand Factor, Safety Factor, Load Power Factor, Ambient Temperature
Transformer Losses Calculator
Calculate the operating efficiency of a power transformer at any load factor, accounting for both iron (no-load) and copper (load-dependent) losses. Use this to compare transformer performance and estimate energy costs.
- Answers
- Transformer Efficiency (%)
- Inputs
- Rated Power, Load Factor, Power Factor, No-Load Losses (Iron), Full-Load Losses (Copper)
At a glance
| Transformer Sizing Calculator | Transformer Losses Calculator | |
|---|---|---|
| Category | Electrical | Engineering |
| Answers | Required Transformer Size | Transformer Efficiency |
| Inputs | 5 | 5 |
| Result unit | kVA | % |
When to use each
Determine the minimum transformer kVA rating needed for a given electrical load, accounting for demand factor, power factor, safety margin, and ambient temperature derating. Use this when specifying or replacing distribution transformers on new or existing electrical systems.
Calculate the operating efficiency of a power transformer at any load factor, accounting for both iron (no-load) and copper (load-dependent) losses. Use this to compare transformer performance and estimate energy costs.