Product Description:

The FC-202N90KT4131N2061 is a variable-frequency drive produced by Danfoss within the VLT FC 202 AQUA Drives series. It connects to three-phase mains and modulates output voltage and frequency so an AC motor can respond to changing load conditions in automated pumping, aeration, or filtration systems. The product combines power conversion, overload protection, and cable management features needed for continuous industrial service. Its variable-speed operation allows connected equipment to match process demand rather than operate continuously at full speed.

The drive accepts a supply of 380 to 480 VAC and provides continuous motor output of 90 kW. Under rated conditions, the output terminals can supply 160 A, while the input side draws 145 A, resulting in an apparent power of 128 kVA. Overall conversion efficiency is 0.99, which limits conductor losses and cabinet heat buildup. The mains interface is three-phase, and a maximum upstream fuse size of 250 A protects the supply wiring. Unshielded motor cables may be up to 300 m long, while shielded motor cables may be up to 150 m long. Motor cable cross-sections may be as large as 150 mm², and brake or load-sharing conductors may have cross-sections up to 95 mm².

Short-term reserve capacity supports an output surge of 176 A, and the drive can maintain 110% output for 1 minute to handle transient load peaks. Power dissipation at rated load is 1474 W, allowing cabinet ventilation to be sized for the heat released during operation. The unit permits one power-up per minute and remains operational at ambient temperatures up to 50 °C. These operating limits help prevent excessive thermal cycling and reduce stress on the input circuitry. Cable routing must provide suitable clearance and bend space for the permitted conductor sizes. Shielded cable can also help reduce electromagnetic interference when the drive is installed near sensitive control or communication equipment.