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VFD & Motor Protection

Variable frequency drives (VFDs) are electronic devices used to control the speed and torque of AC motors by varying the frequency and voltage supplied to the motor. Along with their speed control capabilities, VFDs incorporate several motor protection features to safeguard the motor and its associated equipment.

Motor protection is a critical aspect of VFDs, and they incorporate a range of protective functions to prevent motor damage and ensure reliable operation. These protection functions include overload protection, short circuit protection, stall prevention, and current limitation. Overload protection safeguards the motor against excessive current draw, while short circuit protection helps in detecting and mitigating short circuit faults.

VFDs often incorporate additional protective devices such as line reactors, resistors, and capacitors. Line reactors help in reducing harmonics and provide added protection against power surges and voltage transients. Capacitors and resistors assist in improving motor performance and protecting against voltage spikes and inrush currents.

Products

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$610.24
CoolBlue CBO43HP1/4-50A4-8Core-900CordMax. 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.
$457.68
CoolBlue CBO43HP1/4-50A4-6Core-450CordMax. 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.
$305.12
CoolBlue CBO43HP1/4-50A4-4Core-300CordMax. 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.
$1370.00
TCI V1K8A03EX - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Used for carrier frequencies over 4kHz. but less than 6kHz.
$1245.00
TCI V1K8A03 - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Optimum performance from 2-4kHz VFD switching frequency.
$1126.00
TCI V1K8A01EX - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Used for carrier frequencies over 4kHz. but less than 6kHz.
$1024.00
TCI V1K8A01 - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Optimum performance from 2-4kHz VFD switching frequency.
$734.00
TCI V1K8A00EX - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Used for carrier frequencies over 4kHz. but less than 6kHz.
$667.00
TCI V1K8A00 - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Optimum performance from 2-4kHz VFD switching frequency.
$2549.00
TCI V1K80A03EX - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Used for carrier frequencies over 4kHz. but less than 6kHz.
$2317.00
TCI V1K80A03 - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Optimum performance from 2-4kHz VFD switching frequency.
$2094.00
TCI V1K80A01EX - The V1K Greatly extends motor and cable life from harmful dv/dt caused by PWM VFDs and provides motor protection by limiting voltage spikes to below 1,000 V. Suitable for applications with lead lengths from 100 – 1,000 ft. Used for carrier frequencies over 4kHz. but less than 6kHz.