Electrical · E-BXNVN

VFD Enclosure Wiring Diagram

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This electrical schematic details the wiring connections for a variable frequency drive enclosure receiving a 3-phase power source. The variable frequency drive unit feeds into a DV/DT filter and connects downstream to a motor disconnect switch and the main motor. Control wiring includes safety, ground/common, motor heater, thermostat, oil level switch, vibration switch, and building automation system interfaces linked back to a distributed control system panel. Additional connections include a 120-volt circuit feeding the cooling tower fan motor heater.

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