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- Electrical engineering
- Voltage Current Resistance
- Star Delta Transformation
- Practical Voltage and Current Sources, equivalent circuit diagram
- Capacitor to DC voltage
- Inductors in DC Circuits
- Alternating current
- AC Inductive Circuits
- Three-phase Current
- Transformer
- Complex numbers
- Locus Diagram in AC circuits
- Measurement error
- Videos electrical engineering
- Index electrical engineering
STAR Connection
The ends of the phases are connected together to form the so-called neutral- or star point. If all three resistors are the same size, the phase currents cancel each other out at the zero point and the neutral line can be omitted.
![3 Phase Current - Star-connection - Voltage and Current values](https://sp-ao.shortpixel.ai/client/to_auto,q_glossy,ret_img,w_828,h_375/https://learnchannel-tv.com/wp-content/uploads/2020/04/3-Phase-Current-Star-connection-Voltage-and-Current-values.png)
3 Phase Current - Star-connection - Voltage and Current values
What you can see from the circuit:
In Star connection the line current is equal to the phase current: ILine = IPhase
What about the voltage? The relation between the Line voltage and the Phase voltage can be derived from the pointer díagram:
![Star connection - Relation between Line voltage and Phase Voltage](https://sp-ao.shortpixel.ai/client/to_auto,q_glossy,ret_img,w_1039,h_363/https://learnchannel-tv.com/wp-content/uploads/2020/04/Star-connection-Relation-between-Line-voltage-and-Phase-Voltage.png)
Star connection - Relation between Line voltage and Phase Voltage
In star Connection the Line Voltage is √3 times of Phase Voltage: VLine = √3 VPhase