As considered earlier, EN 50598 is a standard that defines two new energy efficiency classifications for variable-speed drives. Here, ABB Drives UK Ltd explain in more depth how these efficiencies will be calculated. New methodology One of the helpful feature of EN 50598 is that it provides a methodology for measuring the efficiency of […]
By replacing a troublesome fluid coupling between a motor and gearbox with a VSD, £4,800 per year has been cut from a tile manufacturer’s energy bill at a UK tile glaze mill. The drive is protected to IP54, allowing it to resist water sprays when the mixer is being cleaned. The fluid-coupling at British […]
Drives, (variable speed inverter drives) have not had a similar IE classification as motors. The recently published EN 50598-2 standard addresses this and introduces two new energy efficiency indicators: an IE class for the drive; or “complete drive module” (CDM) as defined in the standard. EN 50598-2 will help OEMs and users get better […]
An article from ABB looks at how harmonics caused by AC drives can be mitigated using passive filters or active front-end drives. Passive filters cost less and can be effective under some circumstances; the challenge lies in establishing just what those circumstances are. If the required conditions for a passive filter are difficult to meet, […]
ABB says HVAC drives applications are more than just a change of speed. VSDs from every manufacturer and reseller can be applied to HVAC installations and will save energy over fixed speed motor drives. Like most applications however, HVAC invariably requires more from the drive than simply varying the speed. According […]