Product Description:

The FC-202P37KT4131F1096 is an AC variable-frequency drive manufactured by Danfoss and included in the VLT FC 202 AQUA Drives series. As an adjustable-speed controller, it regulates induction-motor torque and speed for pumps, blowers, and other fluid-handling loads used in industrial water and wastewater automation. The front end withstands overvoltage category III transients, helping protect the rectifier and DC bus from switching surges within rated installation conditions.

The drive accepts a three-phase input across the 380 – 480 VAC mains range and supplies a continuous output current of 65 A when the mains remains within a ±10% tolerance. A maximum output frequency of 590 Hz supports high-speed impeller applications, while line-voltage imbalance is limited to 3.0% to reduce stress on the rectifier section. At 480 V, continuous input current reaches 59 A and apparent input power is 51.8 kVA, information useful for feeder and disconnect sizing. The efficiency is 0.98, reducing conversion losses during sustained pump operation. Under rated load, the unit dissipates 698 W, allowing cabinet ventilation to be sized for the resulting heat. The recommended upstream fuse rating is 125 A, and the selected protection must coordinate with the available fault current. The control electronics permit one power-up per minute to limit repeated inrush stress on capacitors and charging components.

The inverter supports a rated motor output of 37 kW, which corresponds to 50 HP. The drive has a short-circuit current rating of 100 000 A RMS when it is used with correctly rated switchgear. Motor and line conductors may have cross-sectional areas up to 50 mm², accommodating cable sizes commonly used in low-voltage pump installations. The permitted cable size allows the feeder and motor leads to terminate directly at the unit when local wiring rules allow.