Friday 6 November 2015

harmonics in network

A harmonic is defined as one of the components obtained from the breakdown of a periodic wave in the Fourier series. The order of a harmonic is further defined as the ratio between the frequency of the harmonic and the fundamental frequency of the periodic wave considered.
Negative Effects of Harmonics :
v  The capacitors are subjected to a voltage overload and their lifetime is drastically reduced.
v  Connection of the capacitor causes a large increase in the voltage distortion factor THD(V) & THD (I).
v   Reduced motor life, inability to fully load motor.
v  The user transformers, wires and loads are affected by this increase in current.
v  This reduces the capacity of transformer resulting into economic loss as well.
v  High voltage distortion shall also be encountered when shifting from mains to emergency generator.
v  Large current in neutral wires of power distribution system.


How to Control the HARMONICS :

PFC System with Harmonic Block Reactors (Detuned & Tuned)
v  Floor mounting series for medium to large industries.
v  Available from 125 to 1000 KVAr rating.
v  Advanced 3 Ph. controller with inbuilt  Load Analyzer.
v  3 Phase Energy Analyzer with Data Logger (Optional)
v  3 CT as single CT input for controller.
v  Auto Manual selection through Selector Switch
v  Axial Flow/Centrifugal Fan controlled through thermostat.
v  Upto 3 years Warranty with Long Life LL-10 Capacitors

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