The VW3A46107 is a passive filter from the Altivar accessory family, designed to reduce current harmonics on the line side of variable-speed drives. It's a three-phase, 400 V, 50 Hz unit rated at 43 A input and 45 A output, sized for 22 kW / 30 hp motors across the ATV630, ATV930, ATV650, ATV950, ATV61, and ATV71 drive families — one filter per drive.
Harmonic performance and standards
The filter delivers a THDI of 10 % when paired with ATV630, ATV930, ATV650, ATV950, or ATV61W drives at 22 kW / 30 hp; with ATV61H, ATV71H, or ATV71W drives at the same power, THDI is 16 %. That's the difference the drive's internal DC-bus topology makes — the filter itself is the same hardware, but the harmonic signature changes with the drive's rectifier stage. The filter complies with IEC 61000-2-4, IEC 61000-3-4, G5/4, IEC 61000-3-12, IEC 61000-2-2, and IEC 61000-3-2, so it meets the main European and UK harmonic emission standards without needing an active front end.
Power factor and efficiency
Cos phi sits at 1 at 150 % of line current, 0.99 at 100 % load, and 0.85 at 75 % load — meaning the filter maintains near-unity power factor across the normal operating band. Efficiency is 98 %, so thermal losses are 274 W at full rated current. That 274 W has to be dissipated inside the panel; the filter carries IP20 as standard, or IP55 when enclosure-mounted, so plan for airflow if it's in a sealed cabinet.
Overload and environmental limits
The filter can handle 1.5 times nominal current for 60 seconds — enough to ride through a motor start or a short overload without nuisance tripping. Operating temperature is 5 to 45 °C without derating; above that, derate 3 % per °C up to 60 °C. At altitude above 1000 m, derate 5 % per 1000 m up to 4000 m. Vibration resistance is 2 mm peak-to-peak at 5–13.2 Hz and 0.7 gn at 13.2–150 Hz per IEC 60068-2-6.