What is the formula to determine the KVA on a Transformer?
Issue:
Mathematical tools for Transformer calculations
Product Line:
LV Transformers
Environment:
Applies to Low and Medium Voltage Transformers by SquareD/Schneider Electric
Cause:
Mathematical means are often employed to calculate Transformer characteristics
Resolution:
For a three phase Transformer, multiply the load line-to-line voltage by the load current, then by 1.732 (the square root of 3,) and then divide that by 1000. For a single phase Transformer, multiply the load line-to-line voltage by the load current, then divide by 1000.
If the load is provided to you in kW (kilowatts) or watts, you must also have the power factor (pf) of the load. Simply take the watts (converted to kW by dividing by 1000) or kW and divide by the pf. The load power factor is always less than 1.0, and thus if you were to neglect it, you could undersize your Transformer selection.
Mathematical tools for Transformer calculations
Product Line:
LV Transformers
Environment:
Applies to Low and Medium Voltage Transformers by SquareD/Schneider Electric
Cause:
Mathematical means are often employed to calculate Transformer characteristics
Resolution:
For a three phase Transformer, multiply the load line-to-line voltage by the load current, then by 1.732 (the square root of 3,) and then divide that by 1000. For a single phase Transformer, multiply the load line-to-line voltage by the load current, then divide by 1000.
If the load is provided to you in kW (kilowatts) or watts, you must also have the power factor (pf) of the load. Simply take the watts (converted to kW by dividing by 1000) or kW and divide by the pf. The load power factor is always less than 1.0, and thus if you were to neglect it, you could undersize your Transformer selection.
Released for: Schneider Electric USA
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales inquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Center
Find support resources for all your needs, in one place.