CNW 933

Three-phase sinusoidal filter

Unique Selling Point

Output voltage is sinusoidal
Switching edges are completely flattened

High attenuation of spurious emissions of lines

Effective against symmetrical interference

Motor cables possible to 1000m Saving the shielded cable possible

Extended service life of electrical consumers

Reduction of engine noise

Low leakage currents on the motor

Easy construction

Production according to UL insulation system E251513 possible


Sinusoidal output current - save costs and trouble-free operation.

For particularly long cable lengths of > 100m between inverter and motor the shielded cable for EMI suppression used can cause a capacitive coupling. A conventional motor choke can not provide sufficient damping in such cases.

The sinusoidal filter is a low pass from inductance and capacitance and has a very low resonance frequency. So it is able to generate a largely sinusoidal current. The operation and the loss balance of the asynchronous motor behave like the normal mains operation. The typical motor noise with converter do not occur and a shielded cable to the motor can be dispensed. Losses and heating are greatly minimized and the leakage current will be reduced. Longer motor cable lengths are possible. The motor insulation is protected, thus increasing the service life.

The sinusoidal filter also attenuates the conducted interference in lower frequency range very good. The losses and the typical noise in the motor plate can be reduced.

Rated voltage: U ≤ 3 x 500 V
Max. voltage ripple: 5%
Field frequency: 0 - 60 Hz
Drive switching frequency: up to 150 A >4kHz, from 150 A >1,5KHz Short-circuit voltage Uk: 8% (bei 400V)

Voltage drop: 18,4 V/Strang (bei IN und 50Hz)
Max. Cable length to the motor: 600 m (unshielded) 1000m (shielded) According to: EN 60289 / EN 61558
Test voltage: L-L 2500 V, AC/50Hz 10s; L-PE 2500 V, AC/50Hz 10s Insulation class: T40/F
Protection class: IP00
Climatic categorie: DIN IEC 60068-1
Overload: 1,5 x INenn 1 min / h
Ambient temperature: 40 °C
Design: standing on foot angle

Typical Applications

Drive systems for motor drives: 

Mechanical engineering Elevators / escalators

Submersible Pumps

Conveyor technology 

Ventilation and air conditioning 


Automation technology

Power supplies Wind turbines


SKU CNW933-48
Brand REO
Shipping Weight 22.0000kg
Shipping Width 0.170m
Shipping Height 0.274m
Shipping Length 0.240m
Shipping Cubic 0.011179000m3
Unit Of Measure ea
Assembled Length 0.240m
Assembled Height 0.274m
Assembled Width 0.170m

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