Which of the following 3-phase systems is sometimes also called as 3-phase, 4-wire system?

3-phase star-connected
3-phase delta-connected
3-phase zig-zag connected
any 3-phase system

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 1 : 3-phase star-connected

Star connected system:

In the star connection, the similar ends (either start or finish) of the three windings are connected to a common point called star or neutral point.
The three-line conductors run from the remaining three free terminals called line conductors.
The wires are carried to the external circuit, giving three-phase three-wire star connected systems.
Sometimes a fourth wire is carried from the star point to the external circuit, called neutral wire, forming three-phase four-wire star connected systems.

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Delta connected system:

It is formed by connecting one end of the winding to the starting end of other winding and the connections are continued to form a closed loop.
It is always a three-phase three-wire system as the neutral wire is absent in this system.

4 views Answered 2022-09-04 04:29

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