Product Description:

The FC-202P37KT6134N6144 is an AC variable-frequency drive produced by Danfoss for the VLT FC 202 AQUA Drives series. It conditions incoming three-phase power so that centrifugal pumps and blowers in water and wastewater facilities can run at the speed demanded by flow or pressure setpoints. This variable-speed control reduces mechanical stress and energy consumption while maintaining stable process conditions.

When supplied with 575 V mains, the drive delivers a continuous output of 52 A, equal to 51.8 kVA, and supports induction or permanent-magnet motors up to 50 HP (37 kW). The IGBT bridge can switch command pulses to the motor at up to 32 kHz, which improves acoustic quality and torque linearity. Overall conversion efficiency is 0.98, so only 2% of the electrical input is lost as heat. Maximum input current reaches 47 A, and a 40 mA ceiling on each digital sink or source output protects connected control circuits. The analog output stage uses 8-bit resolution to report real-time speed or load signals to supervisory equipment. The drive provides its rated continuous current without derating at supply voltages up to 575 V. It is designed for use with three-phase power distribution networks.

The enclosure can be installed at altitudes up to 1000 m without output reduction and operates in ambient air up to 50 °C. Internal circuitry tolerates 95% relative humidity, and the drive dissipates 740 W as heat at maximum load; cabinet ventilation must remove this thermal output. A 100 A input fuse provides protection against short-circuit events, while shielded motor leads may run up to 150 m and unshielded cables up to 300 m before carrier-frequency-related voltage drop becomes a concern. Continuous operation on a three-phase network at 575 V requires balanced line impedance, and the drive’s digital frequency output and analog reporting help monitor operating conditions.