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Why does the neutral current get overloaded in a three-phase system?
Why does the neutral current get overloaded in a three-phase system?
In an ideal three-phase system, the even current of L1, L2 and L3 cancels out in the neutral (N).
➡️ That’s why neutral current should be zero.
⚠️ But third-order harmonics (3rd, 9th, 15th…) behave differently:
A phase difference of 120 degrees will not cancel each other out; instead, it will keep adding up, so instead of canceling, they add up in the neutral conductor.
📌 Result:
Neutral current can be higher than phase current
Overheating of neutral cables
Increased losses and fire risk
Poor power quality and system instability
👉 Active Power Filters (APF) are an effective solution to eliminate harmonic currents and protect the system.
Power Quality is not just about efficiency — it’s about safety.
#powerquality #electric #svg #APF #voltage #distributuonbox #reactivepower #harmonicfilter #activepowerfilter
#industry40 #electricalengineering #powersystem #energysaving #factoryupgrade #automation #powerquality
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