Product Description:

The FC-202P37KT6131G2908 is an AC variable frequency drive built by Danfoss for the VLT FC 202 AQUA Drives series. By converting fixed-frequency three-phase mains power into a regulated output, the unit lets system controllers adjust centrifugal pump or fan speed to match flow demands in water and wastewater plants. The drive integrates with level or pressure control loops to reduce energy loss and mechanical strain in fluid-handling systems.

The drive has a continuous power rating of 37 kW, which indicates the electrical power it can deliver to a compatible motor under nominal operating conditions and corresponds to 50 HP. Electrical efficiency reaches 0.98, so approximately 2% of the input power is converted into heat at the rated load, limiting cabinet cooling demand. A maximum output frequency of 590 Hz supports oversynchronous operation of compatible high-speed pumps and motors. When connected to a 575 V supply, the converter draws 47 A. It can supply 52 A to the motor terminals, which must be considered when selecting conductors and protective devices.

The unit maintains full current at elevations up to 1000 m, and its electronics tolerate ambient temperatures as high as 50 °C before derating is required. Upstream circuit protection can use a 100 A pre-fuse to clear fault energy rapidly. The control interfaces include two 12-bit analog outputs that can drive loads with an impedance as low as 500 Ω. Digital outputs are rated for 40 mA and support frequencies up to 32 kHz, while relay terminals provide status signaling. Shielded motor leads may extend up to 150 m, and unshielded motor leads may extend up to 300 m, providing flexibility for distributed pumping installations where the drive and motor are separated by substantial distances.