3-phase sinusoidal output filter for an 18.5 kW inverter SinECO-18.5/35 SINECO-18,5/35

Sinusoidal output filter – protects the motor and extends its service life

The 3-phase sinusoidal output filter with a power of 18.5 kW is a key element improving the quality of power supply to motors controlled by frequency inverters. Its task is to eliminate the negative impact of pulse width modulation (PWM) on motor insulation, reduce energy losses and minimize electromagnetic interference. Installing the filter allows converting the rectangular voltage pulses generated by the inverter into a sinusoidal waveform, which is particularly important for ensuring long-term and trouble-free operation of the motor.

#### Construction and application

The EF3LC sinusoidal filter, designed to work with frequency inverters, protects the motor against overvoltage and voltage rise steepness. This prevents overheating of the windings and the formation of bearing currents – frequent causes of motor failure when powered by inverters. It also reduces oscillating leakage currents in motor cables, which translates into increased safety and reliability of the entire system. The device finds application in a wide range of industrial applications where asynchronous motors controlled by inverters are used.

#### Key features and benefits

* **Motor insulation protection:** The sinusoidal filter effectively reduces peak voltages and rise steepness, protecting the winding insulation from degradation.

* **Interference reduction:** Minimizes electromagnetic interference (EMI), positively affecting the operation of other devices nearby.

* **Extended motor life:** By providing optimal power supply conditions, the filter contributes to extending the motor life and reducing the risk of failure.

* **Simple installation:** The compact design and ease of installation allow for quick integration of the filter into the existing power supply system.

* **Available versions:** The filter is available in various versions (A, B, C) adapted to specific application requirements. Version A is intended for filters with a power of up to 18.5kW.

* **High-quality materials:** The use of high-quality materials (copper or aluminum in the windings) guarantees reliable operation and long service life of the device.

* **Insulation class:** Filters with a power of up to 2.2 kW have insulation class F (155°C), while filters with a power of 18.5 kW have class H (180°C).

#### Technical parameters for model SINECO-18,5/35:

Rated power: 18.5 kW

Rated current: 38 A

Inductance: 1.5 mH

Minimum PWM frequency (fkmin): 4 kHz

Winding material: Copper

Dimensions L x W x H: 240 x 199 x 267 mm

Weight: 25 kg

Please note that the manufacturer reserves the right to make changes resulting from the continuous development of offered products. It is possible to make the filter in a different version after prior agreement.