Frequency drive applications are increasingly demanding more power, yet they are also being required to operate in smaller spaces and at higher ambient temperatures. Because forced-air cooling is not capable of meeting these challenging requirements, REO is now offering drive system components suitable for water-cooled installations.
REO products with this new flexibility include the company's braking resistors, mains filters and motor chokes. By using water-cooling it is possible to increase the power ratings of braking resistors by four to five times and inductive components by two times.
The water-cooled option is available in two forms across the range of components: one version with optimised base plates is suitable for mounting on common cooling manifolds and is used for multiple component assemblies; and the other features integral water-cooling circuits and pipe connections.
Operating coolant system pressure for component-integral cooling systems is 4bar (tested to 10bar) and ingress protection is IP64.
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