Product Details – 130B1369 AHF-DA-251-400-50-00-A The VLT Advanced Harmonic Filter is a passive harmonic filter specially designed to match the Danfoss frequency converters "VLT AutomationDrive, VLT AQUA Drive and VLT HVAC Drive. With AHF010 connected in front of the Danfoss VLT the harmonic current" distortion generated back to the mains is reduced to maximum 10% at full load. Forced cooling is not included within IP00 types. Cooling must be secured separately during installation. Specifications: THiD less than 10% Line voltage: 380-415V Line frequency: 50Hz Filter current: 251A Line voltage tolerances: +/- 10% Line frequency tolerances: +5% / -1.5% Overload capacity: 160% for 60 sec. every 10 min. Enclosure rating: 00 Cooling concept: Forced cooling is not included within the IP00 design. Cooling must be ensured separately during installation and t Efficiency: > 98% Ambient temperature without derating: 5-45 ºC Enclosure: X7