NOTEThe NEMA 1 cover is designed for the mounting ofDanfoss contactors.When using non Danfoss contactors, please observe thedimensions of the NEMA 1 terminal cover and ensurethat there is space for the contactor.5.3 General Specification5.3.1 General Technical DataSupply voltage tolerance +/- 10 %Supply frequency tolerance +5 %/-1.5 %Overload capability 160 % for 60 secondsEfficiency >0.98THiD* AHF005 < 5 %AHF010 < 10 %Cos φ of I L 0.5 cap at 25 % I AHF,N0.8 cap at 50 % I AHF,N0.85 cap at 75 % IAHF,N0.99 cap at 100 % I AHF,N1.00 cap at 160 % I AHF,NPower derating Temperature - see deratingcurve below.1000 m altitude above sea level< h < 2000 m = 5 % per 1000mNOTEThe reduction of the low harmonic current emission tothe rated THiD implies that the THvD of the non-influenced mains voltage is lower than 2% and the ratioof short circuit power to installed load (RSCE ) is at least66. Under these conditions the THiD of the mainscurrent of the frequency converter is reduced to 10 % or5 % (typical values at nominal load). If these conditionsare not or only partially fulfilled, a significant reductionof the harmonic components can still be achieved, butthe rated THiD values may not be observed.Enclosure TypeDimensions in mmA (height) B (width) C (depth)X1 332 190 206X2 436 232 248X3 594 378 242X4 634 378 333X5 747 418 333X6 778 418 396X7 909 468 449X8 911 468 549Table 5.1: Enclosure dimensions5.3.2 Environmental DataSurroundingsAmbient tempera-ture during full-scaleoperation5˚C... + 45˚C - without derating5˚C... + 60˚C - with deratingTemperature duringstorage/transport-25˚C... + 65˚C - transport-25˚C... + 55˚C - storageMax. altitude abovesea level1000 m (without derating)Between 1000 m and 2000 m (with derating)Max. relativehumidityHumidity class F without condensation - 5 % -85 % - Class 3K3 (non-sondensing) duringoperationInsulation strength Overvoltage category lll according toENG61800-5-1Packaging DIN55468 for transport packaging materialsIllustration 5.1: Temperature derating curveSelection of Advanced Harmo... AHF005/010 Design GuideMG.80.C3.02 - VLT® is a registered Danfoss trademark 235 5