Danfoss AHF 005 Instruction Manual

Also see for VLT AHF 005: Operating instructions Operating instructions Design guide Design guide

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Danfoss AHF 005 Instruction Manual Manual pdf 6 page image

AHF 005/010Description Ordering numbers, 440 - 480 VDanfoss ordering number Typical Danfoss frequency converter seriesI AHF,N Typical MotorUsed [HP] AHF 005 AHF 010 VLT 5000 VLT 6000 HVAC VLT 8000 AQUA19 A 10, 15 175G6612 175G6634 5011, 5016 6011, 6016 8011, 801626 A 20 175G6613 175G6635 5022 6022 802235 A 25, 30 175G6614 175G6636 5027, 5032 6027, 6032 802743 A 40 175G6615 175G6637 5042 6042 803272 A 50, 60 175G6616 175G6638 5052, 5062 6052, 6062 8042, 8052101 A 75 175G6617 175G6639 5072 6072 8062, 8072144 A 100, 125 175G6618 175G6640 5102, 5125 6102, 6122 8102, 8122180 A 150 175G6619 175G6641 5150 6150 8150217 A 200 175G6620 175G6642 5200 6175 8200289 A 250 175G6621 175G6643 5250 6225 8250Higher ratings can be achieved by paralleling the filter units324 A 300 144 A and 180 A units 5300 6275 8300397 A 350 180 A and 217 A units 5350 6350 8350506 A 450 217 A and 289 A units 5450 6400 8450578 A 500 Two 289 A units 5500 6500 8500* Please note that the matching of the typical Danfoss frequency converter and filter is pre-calculated basedon 480V and assuming typical motor load. VLT 5000 series is based on a 160 % torque application, whileVLT 6000 and 8000 series are based on 110% torque application.The pre-calculated filter current may be varying from the input current ratings of VLT 5000, VLT 6000 andVLT 8000 series as stated in the respective operating instructions, as these numbers are based on differentoperating conditions. Calculation of the exact filter size neededFor optimal performance the harmonic filter shouldbe sized for the line input current to the frequencyconverter, i.e. the input current drawn based on theexpected load of the frequency converter and notthe size of the frequency converter itself!The line input current to the frequency converter(I FC,L ) can by calculated using the nominal motorcurrent (IM,N ) and displacement power factor (Cosφ)) of the motor. Both data are normally printedon the nameplate of the motor. In the case wherethe nominal motor voltage (U M,N ) is unequal to theactual line-line voltage (UL ) the calculated currentmust be corrected with the ratio between thesevoltages as shown in the equation below.The harmonic filter chosen must have a nominalcurrent (IAHF,N ) equal to or larger than the calculatedfrequency converter line input current (IFC,L ).If several frequency converters are to be connectedto the same filter, the harmonic filter must be sizedaccording to the sum of the calculated line currents.If the harmonic filter is sized for the load, andthe motor of the corresponding frequencyconverter is changed, the current must bere-calculated to avoid overload of the harmonic filter.MG.80.B2.02 - VLT is a registered Danfoss trademark 5