Star and Delta Connection
What is the Total power for star Connection ?
Consider,
The total power = 3 EP IP cosΦ
we know that EP = VL/√3, IP =IL
Then,
Total power (P)= 3 ( VL/√3) IL cosΦ
Total power (P) = √3VL IL cosΦ
What is the Expression for star-delta conversion?
From start to delta conversion, delta connected resistance is equal to the sum of the two resistance it is connected and the product of the two resistances divided by the remaining resistance.
For Example, In star connection the resistors are represented as Ra ,Rb , Rc then in delta connection the resistances are,
R1=Ra+Rb+(Ra*Rb)/Rc, R2=Rb+Rc+(Rb*Rc)/Ra, R3=Ra+Rc+(Ra*Rc)/Rb.
What is the required voltage for star and delta connections ?
The required voltage for star connection is each winding receives 220V or 230V and the required voltage for delta connection is each winding receives 414V or 415V.
Star and Delta Connection
Star and delta connections are the types of three-phase circuits. Electric circuits are divided into Single-phase AC circuits and Three-phase AC circuits. A Single-phase system consists of two conductors, one is called phase (through which current flows) and the other is called neutral ( acts as a return way to complete the circuit). A Three-phase system consists of three conductors, which is the more economical way to transmit power than a single-phase system. In electrical circuit analysis there are certain type of complex circuits that have resistances connected in either series or parallel. These complex arrangements are usually connected in the T, Y, Delta or pi connections. Among these star and delta are some common types of connection.
Table of Content
- Star Connection
- Delta Connection
- Delta to Star Conversion
- Star to Delta Conversion
- Solved Example
- Star Vs Delta Connection