These high power variable frequency drives not only deliver high power performance, they facilitate ease-of-use by sharing a common platform with smaller Danfoss drives. Proven power electronics promise 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 provide extra protection in potentially corrosive environments.
High power F frame size VLT Series variable frequency drives also feature a unique cooling design that utilizes 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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