Line Current of 3 Phase Delta Connection

By Mandeep Kumar|Updated : July 25th, 2022

In a balanced delta circuit, the line current is equal to phase current times the square root of 3. The current through any one line between a three-phase source and load is called Line Current.

Answer: The line current of 3 phase delta connection is equal to phase current times the square root of 3.

The measure of the current through any one component comprising a three-phase source or load is called Phase Current. There are two types of connection in a three-phase power system i.e. Star Connection and Delta Connection. In Star connection, all the three phases is connected to a neutral point whereas in Delta connection, all the three phases are connected in a closed-loop system.

More About Line Current

Following are the details on Line Current:

  • It is denoted by IL.

  • In a delta connection, the line current is √3 times of phase current, i.e. IL = √3 IPh.

  • In a star connection, the Line current is equal to the phase current, or IL = IPh.

More About Phase Current

The information pertaining to the Phase Current has been presented below:

  • It is denoted by IPh.

  • In a delta connection, the phase current IPh = IL/√3.

  • In a Star Connection, the phase current is equal to the line current or IPh = IL..

Summary:

What is the line current of 3 phase delta connection?

The line current of 3 phase delta connection is √3 times of phase current i.e. IL = √3 IPh. The phase current flow from any one line to the load whereas line current flow from any one line to the whole three-phase system through the load.

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