Where It Excels in Industrial Use

• Motor Voltage Waveform Improvement
The Schneider VW3A5406 is an output sinus filter designed for Altivar variable speed drives. Installed between the drive and motor, it converts the PWM inverter output into a smoother sinusoidal waveform, reducing voltage stress on motor windings and improving motor operating conditions.

• Long Motor Cable Applications
The filter is especially suitable for installations requiring extended motor cable lengths. It reduces reflected-wave effects and helps maintain reliable motor operation when the motor is located far from the drive.

• Submersible Pumps and Parallel Motors
The VW3A5406 is suitable for applications involving motors connected in parallel, submersible pumps, and motors that are sensitive to high dv/dt voltage stress.

• Drive-to-Transformer Applications
It can be used where an intermediate transformer is installed between the variable speed drive and motor, helping improve waveform quality and reduce electrical stress. 

Key Strengths at a Glance

• High Current Capacity
Rated for 180 A, making it suitable for high-power Altivar drive applications.

• High-Power Drive Compatibility
Typically used with Altivar Process drives in the higher power range, including ATV630/ATV650/ATV930 series applications.

• Reduces Motor Insulation Stress
Helps reduce:

• Motor terminal voltage spikes
• dv/dt stress
• Bearing current effects
• Electrical noise caused by PWM switching

• Industrial Cabinet Installation
The filter is designed for installation inside electrical cabinets. The protection rating is IP00 in Schneider documentation for this model. 

Technical FAQs

1. What is the Schneider VW3A5406?

The VW3A5406 is an Altivar output sinus filter, 180 A, used with Schneider Electric variable speed drives to improve the quality of the motor supply waveform.

2. What is its main function?

Its main function is to smooth the PWM output voltage from a VFD, reducing motor insulation stress and improving performance with demanding motor installations.

3. What are its electrical ratings?

4. Where is the filter installed?

It is installed on the output side of the variable speed drive, between the inverter and the motor.

Connection:

VFD Output → VW3A5406 Sinus Filter → Motor

5. Which Schneider drives are compatible?

Typical compatible drives include:

• Altivar Process ATV630
• Altivar Process ATV650
• Altivar Process ATV930

For 380–480 V applications, the VW3A5406 corresponds to higher-power ATV630/ATV650 ranges such as D55N4 to D90N4 models.

6. Why choose a sinus filter instead of a dv/dt filter?

A sinus filter provides a smoother motor voltage waveform than a dv/dt filter and is preferred when:

• Motor cable lengths are very long
• Motors are older or insulation-sensitive
• Submersible pumps are used
• Multiple motors are connected
• A transformer is installed between drive and motor

7. Does it require external power?

No. The VW3A5406 is a passive filter and does not require an auxiliary power supply.

8. What is the difference between VW3A5306 and VW3A5406?

9. What are typical applications?

Common applications include:

• Large pumps
• Water treatment systems
• HVAC plants
• Fans and compressors
• Conveyor systems
• Process machinery
• Submersible pump systems

10. What is the approximate weight?

The VW3A5406 weighs approximately 90 kg according to Schneider catalog data.