LV Detuning Reactors

Application
Frequent use of power electronic devices with nonlinear
loads leads to harmonic distortion in electrical system.
This nonsinusoidal load causes increase of effective
current of power capacitor and other components of the
system as well as the posibility of capacitor resonance
with other inductive loads. Finally it may lead to problems
or even failures in the installation. The solution is to
use detuning {filtering) reactors, which creates a series
resonant circuit with power capacitors. This detuned
system prevents the installation from resonance effect and
also acts as a filter for higher harmonic content. Usually
there is recommended to use detuning reactors for the
total voltage distortion THD-U higher than 3 %.

Construction
Detuning reactors are produced from high grade, low
loss transformer sheets, with winding either from copper
wire or aluminium band. Iron core is designed with multi
air gap to meet high current linearity and low thermal
losses. They are impregnated with high quality epoxy
resin to ensure good insulation, low noise and long
lifetime. Reactors are equipped with thermal protection to
prevent overheating. Reactors with lower rated power are
designed with copper wire and outlets via terminal block or
cable lug. Higher power rated reactors are produced from
aluminium band with outlets as aluminium bars (copper
outlets are possible on request).