What is harmonics in AC waves. How it is generated? How it
will effect the system network? how can eliminate it?
Answer Posted / iamdon
The integral multiple frequency components superimposed on
fundamental components is called harmonics.
It is generated due to switching action,power electronics
devies(static compensator,rectifiers) used in power
system,Arc furnace etc...
Due to harmonics
1)Resonance occur between inductive and capacitive parts of
circuit.It is dangerous.
2)Harmonics cause the interference with neighbouring
telecommmunication circuit and computer traffic.
3)Incresed loss in machines=>temp rise=>insulation failure.
Use of filter can solve the harmonics to some extent.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
Explain about 3 phase motor fault current calculation with examples?
what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?
Why IR value of the (HT cable Plus synchronous motor) is less while individually having IR values in GΩ?
Name two types of electrical analogous for mechanical system.
We have a distribution transformer of 750KVA/11kv/440v and an AVR (Servo Stabilizer) of 750KVA on the LT side of distribution transformer. Also we have an ACB of 1200A on the output of distribution transformer (that is on the input of AVR). We want to have an MCCB on the output of AVR. What should be the rating?
What is the difference between line drop and percentage line drop?
Define norton equivalent circuit?
why not starting switch first connect in direct on line starter?????
hi there i am highly enthusiastic about discussing electrical concepts , and hence i wud lyk to invit al do intrested to join me at gtalk and hav a dscussun of the concepts , ad me as a freind . my email id is rakesh.2k99@gmail.com
Give some differences between open loop and closed loop?
1. what is usage for power factor in industries?? 2.why we need to monitor power factor??
What is minimum phase system?
What is Servo Ventilated Motor?
At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?
how wecalculate breaking capcity of acb mcb mccb .explain with example