Installation vacon • 5324-hour support +358 (0)201 212 575 • Email: vacon@vacon.com55.2 Cooling5.2.1 Active Front End unitEnough free space must be left around the Active Front End unit to ensure sufficient air circulationand cooling. You will find the required dimensions for free space in the Table 21. You will find therequired cooling air, minimum air holes and heat dissipation in the Table 22.When planning the cooling for the space, take into consideration that the Active Front End unit heatloss is approx. 2% of the nominal capacity. Air flow, see Figure 34 and Figure 35.Table 21. Mounting space dimensionsType Dimensions [mm]ABB 2 CNXA0261 5NXA0170 6200 0 0 100NXA0460 5NXA0325 6 200 0 0 100NXA01300 5NXA01030 6 200 0 0 100A = free space above the unitB = distance between inverter and cabinet wallB2 = distance between two unitsC = free space underneath of the units
