Reactors are known by several names, including inductors and chokes. The point of a reactor is to slow the rate of the rise of current. This helps to reduce harmonic distortion, a common side effect of VFDs and other equipment.
An AC line reactor is placed between the utility and the VFD, which means that the power going to the VFD all passes through this reactor. Because of this, you want this reactor to be as reliable and effective as possible.
This is where the Mangoldt PolyGap® technology is a major improvement over a standard reactor.
A PolyGap core has many small air gaps compared to the industry standard which has only a few air gaps at most. Some reactors only have a single air gap.
These air gaps are necessary in reactors, but splitting them up in to more and smaller gaps means you increase the reactor performance. Air gaps have stray magnetic fields that emanate from them and cause circuilating currents in coil windings. The PolyGap approach virually eliminates these stray magnetic fields, as well as reducing heat losses and audible noise.
They have inductance that is balanced in all three phases, with a tolerance of +/- 3% rated inductance. This helps to keep motor voltages balanced by offering consistent filtering and equivalent voltage drops across all phases. The PolyGap reactors provide
These advantages also help to make your life simpler. PolyGap reactors can be used as both line and load reactors because of the advanced quality from this technology. This means fewer stocked parts, more redundancy, and simpler inventory management.
