Danfoss has introduced a highly compact range of 690V drives up to 630kW. The efficiency of this range - better than 98% - means much reduced heat losses and thus an extremely compact format, making IP54 enclosures available as standard, along with the more common IP00 and IP21 arrangements. These low thermal losses also allow 'zero side clearance' mounting, with front access only provided for installation and servicing.
RFI filtering up to Class A1 is standard, allowing output cable lengths of up to 150m to be installed. This makes the range ideal for the industrial market, particularly the water industry, which is a substantial user of high power medium voltage drives. The high voltage series covers the full Danfoss series, including the VLT Automation Drive, VLT HVAC Drive and the VLT AQUA series, each differentiated for its own specific market sector.
The design has been optimised to facilitate efficient cooling and the IP00 offers an optional pre-engineered cooling duct, which simplifies the installation of these drives into Rittal TS8 series enclosures (illustrated). IP21 and IP54 versions are floor standing and come supplied with a pedestal to simplify cable entry.
Fusing and mains disconnect are available as an option, as is a 24V external control supply. The design of these drives has been guided by active customer input to ensure ease of installation, serviceability and high up-time.