FEIN Main Catalogue 2008/2009 - Howarth Timber

High frequencyFrequency convertersDynamic FEIN frequency converters fulfil the requirementsof safety class IP 54 as defined in DIN 40050 and feature coilsof insulation class F in accordance with DIN VDE 0530. They arevirtually maintenance-free. As a guide, the maintenance intervalfor the ball bearings is approximately 20,000 operating hours.The frequency converters are easy to install. The installation sitesimply requires good ventilation (max. air temperature + 40° C).We recommend installing units of 4 kVA and above on antivibrationbuffers to minimise vibrations. FEIN KSR frequencyconverters are asynchronous-synchronous frequency converters.The output voltage only deviates slightly (± 1%) from the setidling voltage, even under load. The converters are short-circuitproof.It is standard practice to connect several KSR convertersof similar types and sizes in parallel.GrindingExample of an HF system.169