VFD & Motor Protection

Harmonic frequencies result from nonlinear electronic switching devices, such as variable frequency drives (VFDs), and flow into electrical systems causing increased wear and tear on motors, increased electrical usage and power quality problems.

Harmonic filters are designed to eliminate harmonic distortion caused by excess currents in and out of a VFD. They are made up of an array of inductors, capacitors and resistors that are capable of deflecting harmonic currents, sending them to ground. Passive harmonic filters are a series inductor-capacitor resonant circuit that is tuned to a specific frequency and connected with a VFD in parallel. The filter offers low impedance at the resonant frequency and sends the tuned harmonic to ground. Active harmonic filters are not designed for a specific situation as the passive filters, but can adjust dynamically to the demand for harmonic correction.

Line reactors protect VFDs from input power line disturbances by smoothing and slowing down incoming voltage distortion. They also reduce harmonics generated by the VFD that travel back into the power line. A line reactor is coil of wire that forms a magnetic field that current flows through. The magnetic field limits the rate of the rise of the current, reducing harmonics.

Load reactors are placed on the load side of a VFD to help protect motors from damage when noise spikes are produced along long cable lengths, which tend to amplify the noise. They also dampen the rate of the change of voltage that is applied to the motor windings, which improves motor performance.

Products

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$1070.84
CoolBlue N123HP1632 + -4Core-900CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$1070.84
CoolBlue N123HP1632 + -3Core-450CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$1070.84
CoolBlue N123HP1632 + -2Core-300CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$1070.84
CoolBlue N123HP1632 + -1Core-150CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$611.92
CoolBlue N75HP429-1631-4Core-900CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$611.92
CoolBlue N75HP429-1631-3Core-450CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$611.92
CoolBlue N75HP429-1631-2Core-300CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$611.92
CoolBlue N75HP429-1631-1Core-150CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$458.92
CoolBlue N57HP103-428-4Core-950CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$458.92
CoolBlue N57HP103-428-3Core-450CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$458.92
CoolBlue N57HP103-428-2Core-300CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.
$458.92
CoolBlue N57HP103-428-1Core-150CordMax Each Package INCLUDES ONE CORE. Inductive Absorbers reduce or eliminate motor bearing damage in VFD driven motors. Made from nanocrystalline Nanoperm. Supresses circulating currents and damaging bearing currents. By reducing transient voltages, straight capacitive currents, and common node currents before they reach the motor, it saves the motor from damage. Stops grounding brushes or hybrid bearings, lasts a lifetime with easy installation or retrofit.