The quality of electricity is one of the key indicators. Depending on the type of system load and quality provided by the electricity supplier, users are faced with the same problems of the following (or combinations thereof).

1. The quality of electricity is one of the key indicators.
Depending on the type of systemloadand quality providedby the electricity
supplier, users are facedwiththe same problems of the following (or combinations
thereof).
• Harmonicdistortion.Evenwithaguaranteedqualityof deliveredenergyandthe absence of distortion,
the lattermay arise inthe processof energyconsumptionanddue tothe nature of the load - switching
powersupply(forexample,personal computers), ACmotorsandfluorescentlighting.Inrecentyears,these
deviceshave appearedinlarge numbers,bothinenterprisesandhomesandcottages.Harmonicdistortion
can be the reasonof overheatinginthe windingsof motors,aswell asreducingthe efficiencyof systems.
Furthermore,the presenceof harmonicsreducesthe powerfactor,due toincrease inthe proportionof
reactive energy,whichcannotbe usedload.
• Unevenloadingphase.Inthree-phase systemsisdifficulttoachieve uniformloadingof all phases,sooften
one (or two) phase isloadedmore thanothers.Forexample,thissituationoccurswhenconnectingsingle-
phase socketsandlightingonone phase of a three-phase system, causingincreasedloadof the phase with
respectto the others.The consequence isareductioninoverall systemefficiency.
• The maximuminrushcurrent.Formostelectrical devicesstartingcurrent(startingcurrent) exceedsthe
nominal.Althoughthisprocessisshort,itcan cause increase inthe cost of electricityfor businesses.
Dependingonthe rate of powersupply,the companymaycharge a monthlyfee isnotat par and at the
maximumpowerconsumption.The excesscanbe up to 30% of the monthlycostof electricity.
• Transientvoltage drop.The powersupplysystemmaydecrease the voltagefromthe nominal value.This
leadstothe fact that the motorsand otherdevicesuse currentthatexceedsthe nominalvalue,whichmay
cause theirfailure andreducedefficiency.
• Reducedpowerfactor.The powerfactoristhe ratio of active powertothe full.The presence inthe
systemwithreactive loads(motors,pumps,heaters,ventilationandair) increasesthe reactive powerand
reduce the powerfactor.Since the reactive powerloadisnotconsumed(energyisexchangedbetweenthe
source and sink),areductioninsystemefficiency.
Dependingonthe particularsystemeliminatingthe problemsdescribedabove cansave 10 - 30% of the
energy,dependingonthe degree of eachof the negative factors.Inpractice,developedalarge numberof
technical solutionstocombatthe problemslisted,the maindrawbackisthat,as a rule,each of the devices
isdesignedtosolve one of these problems.
Energy Saving Device (Module - Optimizer "ECOD" Feigin Electric Co.,
Ltd., Thailand) provides a comprehensive solution to the above
problems.
www.feiginelectric.com