Harmonic mitigation for Altivar drives
The VW3A46105 is a passive filter designed to reduce current harmonics on the line side of Schneider Altivar variable speed drives. It targets the 15 kW / 20 hp frame across the ATV61, ATV71, ATV630, ATV650, ATV930, and ATV950 families — one filter per drive, per the specification. The THDI figure lands at 10 % for the ATV630, ATV650, ATV930, ATV950, and ATV61W platforms, and 16 % for the ATV61H, ATV71H, and ATV71W variants, all at the same motor rating. That difference matters for site compliance: a 10 % THDI keeps you inside IEC 61000-3-4 and G5/4 limits for most installations without additional line reactors.
Rated at 29 A input and 30 A output on a 400 V ±10 % three-phase supply at 50 Hz ±2 %. The 1 A delta between input and output accounts for the filter's own magnetizing current — expect to size upstream protection for the 29 A figure, not the output side. Power factor correction is load-dependent: cos φ reaches 1.0 at 150 % of line current, 0.99 at 100 %, and 0.85 at 75 %. That means the filter delivers near-unity PF across the normal operating band, but the PF drops if the drive is running well below its rated current. Thermal losses are 224 W at full load — factor that into enclosure cooling, especially in a sealed IP55 cabinet.
Environmental limits and derating
Operates without derating from 5 °C to 45 °C ambient. Above that, derate 3 % per °C up to 60 °C — a 50 °C ambient knocks the effective current rating down by 15 %, so size the drive/filter pair accordingly if the panel runs hot. Altitude derating kicks in above 1000 m at 5 % per 1000 m. The filter carries IP20 as standard, but the spec also lists IP55 for enclosure mounting — that's the panel's rating, not the filter's standalone ingress protection. Vibration resistance per IEC 60068-2-6: 2 mm peak-to-peak from 5 to 13.2 Hz, then 0.7 gn up to 150 Hz. Accepts 0.5 to 10 mm² on the main power terminals and 2.5 mm² on the control terminals.