What is the relationship between line current and winding current in a delta system?

In a delta system, the relationship between line current and winding current is defined by the geometric configuration of the system. In this configuration, each phase winding connects between two line conductors, creating a triangle or delta shape. The key point to understand here is that the line current, which is the current flowing through the lines, is not the same as the winding current flowing through the coils or windings of the delta-connected equipment.

In a delta connection, the winding current is larger than the line current. Specifically, the winding current can be derived from the line current using the square root of three (approximately 1.732). The relationship is expressed mathematically as winding current equals line current multiplied by the square root of three. Thus, knowing the line current and applying this factor allows you to calculate the corresponding winding current.

This fundamental understanding of the delta configuration is essential for electrical and engineering applications, ensuring proper design and analysis of power systems involving three-phase motors and generators.