Решение для защиты двигателя

Длинные кабельные линии, управляемые частотно-регулируемыми приводами (ЧРП), могут вызывать искажение напряжения, пиковые перенапряжения и высокочастотные гармоники, что приводит к старению кабеля, повреждению изоляции двигателя, перегреву и износу подшипников. Это сокращает срок службы оборудования, снижает эффективность системы, увеличивает частоту отказов и затраты на техническое обслуживание.

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.

Запрос по продукту или решению
Реальные проблемы
Распространённые проблемы в реальных сценариях
  • 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.

Фильтр DV/DT

Функции

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.

Особенности

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

Сопутствующие продукты
Мы применили множество продуктов в решении "Фильтр DV/DT"

Выходной реактор

Функции

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.

Особенности

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

Сопутствующие продукты
Мы применили множество продуктов в решении "Выходной реактор"

Синусоидальный фильтр

Синусный фильтр SIKES может преобразовывать форму выходного напряжения частотного преобразователя в почти идеальную синусоиду.

Функции

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

Особенности

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

Области применения

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

Сопутствующие продукты
Мы применили множество продуктов в решении "Синусоидальный фильтр"
Сравнение решений
Сравнение различий между решениями в таблице
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. ★★★