Motor Protection solution

Long cable runs driven by variable frequency drives (VFDs) can cause voltage distortion, peak over voltage, and high-order harmonics, leading to cable aging, motor insulation failure, overheating, and bearing damage. This shortens equipment lifespan, reduces system efficiency, and increases failure rates and maintenance costs.

Frequent motor failures: how to ensure stable operation and extend service life?

Power-intensive industries often require lengthy cables, with some sectors utilizing cables extending hundreds or even thousands of meters in harsh environments. Long cables introduce numerous issues for motors, amplifying voltage spikes and generating higher-order harmonics. These unstable voltages can damage both cables and motors.

Variable frequency drives cause voltage distortion, common-mode voltage, peak voltage, and higher-order harmonics, leading to cable damage and premature motor insulation failure, overheating, reduced service life, and bearing damage. This also results in decreased system energy efficiency, higher failure rates, reduced production capacity, and increased costs.

Consulta de producto o solución
Puntos críticos reales
Problemas comunes en escenarios reales
  • 1

    Reactor temperature rise too high.

    An output reactor has been installed between the frequency converter and the motor, but the temperature rise of the reactor is too high.
  • 2

    Service life shortened

    Motor overheating, bearing damage, short service life.
  • 3

    Cable damage

    Premature damage to the cable between the frequency converter and the motor.
  • 4

    Excessive cable length

    The cable between the inverter and the motor is excessively long, causing voltage distortion, common-mode voltage, peak voltage, and higher-order harmonics.

DV/DT Filter

Funciones

1. Effectively reduces dv/dt voltage at the inverter servo motor terminals;
2. Prevents premature aging and breakdown of transmission cables and servo motor windings;
3. Extends servo motor service life, enhances servo reliability and uptime;
4. Effectively suppresses pulse spike voltage at the servo motor terminals;
5. Reduces motor heating and bearing wear.

Características

Characteristics: Excellent durability, maintenance-free, operating temperature customizable up to 140°F/60°C.Maximum supported cable length extended to 300 meters.

Productos relacionados
Hemos aplicado muchos productos en la solución "DV/DT Filter"

Output Reactor

description is empty.

Funciones

Suppress harmonics, reduce motor heating, extend motor lifespan, lower motor noise, decrease eddy current losses, and protect power switching devices inside the inverter. Supports a maximum cable length extended to 90 meters.

Características

Excellent durability, maintenance-free operation, operating temperature can be designed as required: up to 140°F/60°C.

Productos relacionados
Hemos aplicado muchos productos en la solución "Output Reactor"

Sine Wave Filter

The SIKES sine wave filter can shape the output voltage waveform of the frequency converter into a near-perfect sine wave.

Funciones

Unparalleled capability in cleaning PWM
Almost eliminates high-frequency harmonics and voltage spikes
Reduces motor heating and extends motor service life
Improves system performance and enhances efficiency
Supports a maximum cable length of up to 2000 meters

Características

Excellent durability, maintenance-free, operating temperature can be designed as required: up to 140°F/60°C

Áreas de aplicación

Oil and gas industry, wastewater treatment industry, mining and smelting industry, papermaking and printing industry.

Productos relacionados
Hemos aplicado muchos productos en la solución "Sine Wave Filter"
Comparación de soluciones
Comparar las diferencias entre cada solución en una tabla
Solution Product Series Main Parameters Enclosure Cooling Method Description Performance
Sine Wave Filter – With Enclosure SWF THDv 5% IP20 AF Unmatched PWM filtering performance, virtually eliminating high-frequency harmonics and voltage spikes, reducing motor heating, extending motor lifespan, improving system performance and efficiency, and supporting maximum cable lengths up to 2000 meters. ★★★★★
Sine Wave Filter SF THDv 5% / AN Unmatched PWM filtering performance, virtually eliminating high-frequency harmonics and voltage spikes, reducing motor heating, extending motor lifespan, improving system performance and efficiency, and supporting maximum cable lengths up to 2000 meters. ★★★★★
DV/DT Filter DVT Peak Voltage ≤ 1000V / AN 1. Effectively reduces dv/dt voltage at the servo motor terminals;
2. Prevents premature aging and breakdown of transmission cables and servo motor windings;
3. Extends servo motor lifespan, improving reliability and system uptime;
4. Reduces pulse peak voltage at motor terminals;
5. Minimizes motor heating and bearing wear; supports maximum cable lengths up to 300 meters.
★★★★
Output Reactor OCL Reactance Rate: 1%–5% / AN Suppresses harmonics, reduces motor heating, extends motor lifespan, lowers motor noise, minimizes eddy current losses, and protects internal power switching components of the inverter. Supports maximum cable lengths up to 100 meters. ★★★