Page 174 - Electrician - TT (Volume 1)

ELECTRICIAN - CITS

• Phase voltage (V ) .
ph
• Line current (I ).
L
• Phase current (I ).
ph
• Phase power.
• Total power.

Line voltage (V )
L
The voltage between any two phases of the supply system is called line voltage.
Phase voltage (V )
ph
The voltage between one of the phase and the neutral terminal is known as phase voltage.
Line current (I )
L
The current flowing between any two phases of the winding is termed as line current.

Phase current (I )
ph
The current flowing through any of the phase winding is called phase current
Phase power
The power measured between a phase and the neutral terminal is known as phase power.
Total power

In a three phase system, the total power measured between the three phases is called total power.
Methods of connecting three phase windings
There are two ways of connecting three phase winding
1 Star connection.
2 Delta connection.

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CITS : Power - Electrician & Wireman - Lesson 26-29