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What is meant by the neutral point? !

2019-06-12View Original

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Definition of neutral point: In the windings of transformers and generators, there is a point at which the absolute value of the voltage between this point and each external terminal is equal; this point is the neutral point. When the power supply side (transformer or generator) or the load side is connected in a star configuration, the common point at which the beginning (or end) of the three-phase coils are connected together is called the neutral point, or simply the midpoint. Connecting the cable to the neutral point will prevent current from flowing out? !
Reply #22019-06-12
Current flows at the neutral point when there is imbalance in the three-phase currents
Reply #32019-06-12
Generally, the various phases cancel each other out, thus forming a zero point (neutral point).
Reply #42019-06-13
In other words, the motor operates in a three-phase balanced state; if there are other single-phase voltages present, balance cannot be achieved.
Reply #52019-06-13
That’s right; single-phase can’t be balanced.
Reply #62019-06-14
Under normal three-phase balance, there is no current in the neutral point. However, since most loads are not evenly distributed, there is a certain voltage and current in the neutral wire. Therefore, it is now required to use a three-phase five-wire system, with the neutral point serving as the zero wire. An additional PE protection wire is installed separately; this PE protection wire does not carry any current, and it becomes charged only in the event of an accident or equipment leakage.
Reply #72019-06-15
“The neutral point as the neutral wire”? The neutral wire isn’t a separate wire, right? Or is the neutral wire drawn from the neutral point?
Reply #82019-06-15
In a three-phase five-wire system, the neutral wire is taken at the neutral point
Reply #92019-06-15
Is the original poster from a chemical instrumentation background?

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