Variable Frequency Drives (VFDs) can extend the life of your motors, but how can you extend the life of your VFD? The most expertly specified VFD is only as useful as its operational reliability. This guide reviews variable frequency drives basics of care to ensure long-term productivity and cost-effectiveness.
A line reactor (also referred to as a “choke”) is a variable frequency drive (VFD) accessory. It consists of a coil of wire that forms a magnetic field as current flows through it. This magnetic field limits the rate of rise of the current, thus reducing harmonics and protecting the drive from power system surges and transients.
There are many reasons why lead length between Variable Frequency Drives (VFDs) and motors are excessive. VFDs are sensitive electronic equipment and must be installed in clean and dry environments, forcing long distances between motor control rooms and the motors that they control. Also, some applications such as conveyors often use a single drive to operate multiple motors on the line. The length of the conveyor dictates the longest distance between drive and motor. With these constraints, output load reactors are the best answer in drive solutions to preventing motor failure.