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Advanced Engineering 2021

NEC Birmingham(B40 1NT)

03/11/2021 - 04/11/2021

Join us in our 12th and most important edition to date, as we invite engineers and management from all (more)

Drives get bigger and smaller

Advances in drive efficiency and cooling techniques have enabled Danfoss to offer more compact air-cooled drives, right up to 1200kW. Although Danfoss VLT drives are now 98 percent efficient, that minuscule 2 percent loss still represents a fair amount of heat in larger drives. At 450kW, for instance, there is still 9kW of heat to be dissipated from within the drive and when there are a series of drives in a control room, heat is an issue that must be taken into consideration when planning the installation.


With advanced air-cooling techniques Danfoss has now expanded their VLT range to a mighty 1200kW at voltages from 380V right through to 690V. Within the design of the drives, Danfoss has created a unique cooling channel at the rear of the drive that extracts 85 percent of the heat created and this can be channelled to the outside of the control room. This heat is isolated from the drive control circuitry resulting in extended drive life and higher reliability.


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