The formula (kVA × 1,000) ÷ (line-to-line voltage × 1.73) is used to calculate what parameter?

The formula ((kVA × 1,000) ÷ (line-to-line voltage × 1.73)) is utilized to calculate the full load current per phase in a three-phase electrical system. This is significant because it helps determine the amount of current flowing through each phase of the transformer when it is operating at full capacity.

To break down the formula further:

• The (kVA) (kilovolt-amperes) value multiplied by 1,000 converts the apparent power into volt-amperes.

• The line-to-line voltage represents the voltage across two phases, which is relevant in three-phase systems.

• The factor (1.73) (which is the square root of 3) arises from the relationship between line-to-line voltage and phase voltage in a three-phase system.

By using this formula, you can effectively find out how much current each phase carries when the transformer is fully loaded, which is crucial for proper sizing and management of electrical systems. Understanding this helps in ensuring that equipment operates within safe limits, preventing overload and potential failure.

This formula does not relate to voltage drop, transformer efficiency, or power factor correction, but specifically addresses the calculation of full load current,