The major effects of concern may be summarized as follows:

Harmonics will reduce the life and performance of generators. Normally a small amount of harmonics, less than about 4%, has negligible impact on the generator system but can still reduce electric performance by 5% or more. Higher levels of harmonics can result in far more severe reductions in power output. Elimination, or at least minimization of harmonics is therefore desirable.

APPLICATION
Our unique Broad Spectrum Harmonic Filter, the Unisin 3100, consists of 2 major parts: a series component and a shunt component. The series component is a reactor that functions to prevent the flow of harmonics towards the generator and a shunt component, which is an all-around filter that filters out all harmonics. If the filter is designed to filter out 3^rd or 5^th harmonics, then the filtering efficiency at the design harmonic is typically over 95%; efficiencies for other higher order harmonics are typically about 65%.

Our design of the Unisin 3100 is based on user requirements so that one filter will handle all of the harmonics for a major savings in cost and space. Moreover, the Unisin 3100 contains no electronic parts and so is very reliable.

It is commonly recognized that a solidly grounded neutral of a generator in low voltage systems, say 3 phase 4-wire 480 volts, can have severe effects on the generator’s derating due to circulation of the 3^rd harmonic through the ground loop. A derating also occurs when a generator is impedance grounded in medium voltage systems. The Unisin 3100 can filter out the 3^rd harmonic without impacting the service of 3 phase 4-wire systems for single-phase loads.

CONCLUSION
The Unisin 3100 Broad Spectrum Harmonic Filter can meet your need to avoid derating.

POWER QUALITY CONSULTATION
Please feel free to contact us for free consultation.