Electrical Engineering - Three-Phase Systems in Power Applications - Discussion
Discussion Forum : Three-Phase Systems in Power Applications - General Questions (Q.No. 2)
2.
In a three-phase system, when the loads are perfectly balanced, the neutral current is
Discussion:
29 comments Page 1 of 3.
Sanjeev said:
9 years ago
Since we have shown that the neutral current is zero we can see that removing the neutral core will have no effect on the circuit, provided the system is balanced. Such connections are generally used only when the load on the three phases is part of the same piece of equipment (for example a three-phase motor), as otherwise switching loads and slight imbalances would cause large voltage fluctuations.
Bhimesh said:
10 years ago
As a considered KCL law incoming currents are equal to outgoing currents so the system balanced condition (IR=IY=IB=0). In this condition considered the neutral current is ZERO.
Rstar said:
9 years ago
It is balanced load so the neutral current is zero. We want proof to let do one thing remove the neutral core and observe the circuit there no different.
Jyoti said:
1 decade ago
At balanced state sum of currents of all phase ie- Ia+Ib+Ic=0 these currents are flowing through neutral so that its value is zero.
Rajiv gandhi said:
1 decade ago
As per KCL law the sum of the incoming current is equal to sum of the outgoing current in a balancing circuit three phase system.
Ravi said:
1 decade ago
KCL, in a node sum of all currents is zero. So if we extract another line there is no chance of load drop. So no current flow.
Lakshmiee02 said:
1 decade ago
At balance cond. for 3pha sys Ia+Ib+Ic=0,which is the total current following throw the neutral point of 3pha sys.i.e. zero
Zeeshan said:
9 years ago
Hi, can you explain me for example line one 25 A & line two 65 & line three 40 how calculate what's amp neutral.
Pavan.A said:
1 decade ago
Yes, we apply KCL I(total) = I1 + I2 and I1, I2 are the load current and I (total) is the neutral.
Bipin said:
9 years ago
The current flows through neutral when the load is unbalanced. In balanced state, Ia + Ib + Ic=0.
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