Variable frequency drives offer easy maintenance
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Danfoss Drives product story
Edited by the Engineeringtalk editorial team
Apr 7, 2008
Danfoss Drives VLT series Variable Frequency Drives improve ease of use by sharing a common platform with smaller Danfoss drives.
Danfoss Drives VLT series variable frequency drives are now available with power through 1350 HP in 460 and 690 VAC.
F1 frame models deliver power up to 783kW in a 2205 x 1400 x 607mm footprint, while F2 frame models deliver up to 1007kW in a 2205 x 1803 x 608mm footprint.
These high-power variable-frequency drives deliver high-power performance and improve ease of use by sharing a common platform with smaller Danfoss drives.
Proven power electronics provide reliable operation and components are accessible from the front of the unit for quick, easy serviceability and maintenance.
A Rittal TS8 enclosure system in IP21 (NEMA1) or IP54 (NEMA12) enables easy system expansion, while a Class A1 RFI filter (optional class A2) reduces EMI/RFI without the need for external filters.
Additional features include DC-link reactors to reduce harmonics without external AC line reactors, DC-link fuses that provide independent protection of inverters and coated PCBs that provide extra protection in potentially corrosive environments.
High power F-frame VLT series variable frequency drives also feature a cooling design that uses a ducted back channel to pass cooling air over heat sinks, with minimal air passing through the electronics area.
This allows 85% of the heat losses to be exhausted directly outside the enclosure, which improves reliability and prolongs drive life by dramatically reducing temperature rise and contamination of electronic components.
A number of power, monitoring, enclosure, filtering, control and convenience options and accessories are available to enhance performance and operation.
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