FC-301P55KT4134L2660 Danfoss
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The Danfoss FC-301P55KT4134L2660 is part of the VLT FC 301 Automation Drives series and delivers a rated power of 55 kW with a 75 horsepower output. It operates on three phase power with a mains voltage range of 380 to 480 VAC and supports output frequencies from 0 to 590 Hz. This drive features a displacement power factor greater than 0.98 and allows for shielded motor cables up to 50 meters.
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Product Description:
The FC-301P55KT4134L2660 is an AC variable frequency drive from Danfoss supplied in the VLT FC 301 Automation Drives series. It converts fixed mains power into a regulated three-phase output that lets control systems vary induction motor speed and torque on conveyors, pumps, and general process equipment inside automated plants. The drive belongs to the VLT AutomationDrive FC product group and carries the internal series index 301.
The rated output is 55 kW, which corresponds to 75 hp and provides continuous power for midrange industrial motors. The input section accepts 380–480 VAC three-phase mains at 50/60 Hz ±5%, and the converter can start only once per minute to comply with the maximum power-up rate. The inverter’s modulation stage produces an output frequency of 0–590 Hz, while a dedicated flux mode permits frequencies from 0 to 300 Hz for applications that need constant magnetizing current at low speed. Terminal voltage tracks the supply from 0% to 100%, enabling vector control down to zero speed without external transformers. Motor leads may be routed through as much as 50 m of shielded cable or 75 m of unshielded cable without exceeding carrier-frequency limits. With a true power factor of at least 0.9, the unit minimizes reactive demand on the utility feed. Its regulated output allows connected motors to follow changing speed commands while maintaining the torque required by automated machinery.
During dynamic conditions, the drive tolerates an overload of 150% for 1 minute in every 10-minute interval, allowing fast acceleration of heavy loads without exceeding thermal limits. The brake chopper engages when the DC link reaches 778 V DC, and the control panel provides a high-voltage warning at 810 V DC before an overvoltage alarm occurs at 820 V DC. The displacement power factor remains above 0.98, so the drive draws nearly pure active current from the three-phase mains. These voltage thresholds allow the drive to respond in stages as regenerated energy raises the DC-link voltage. The warning provides an early indication of elevated voltage, while the alarm protects the converter when the higher threshold is reached.
