FC-202P37KS4134G3812 Danfoss
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The Danfoss FC-202P37KS4134G3812 is part of the VLT FC 202 AQUA Drives series and has a power rating of 37 kW with an efficiency of 0.96. This drive supports a mains voltage range of 380 to 480 VAC and provides a continuous output current of 73 A at 380-440 V and 65 A at 441-480 V. It is designed for environments up to 50 degrees Celsius and can handle a maximum pre-fuse of 250 A.
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Product Description:
The FC-202P37KS4134G3812 is a variable-frequency drive produced by Danfoss for the VLT FC 202 AQUA Drives series. Designed for water-industry applications, it modulates pump or blower speed to match real-time demand, reducing energy use and hydraulic shock in treatment and distribution systems. Its analog output can send feedback to devices with an impedance of up to 500 Ω, supporting connections to monitoring and control equipment.
The drive has a power rating of 37 kW, which corresponds to 50 HP. It operates from a three-phase 380–480 VAC supply, correcting the inconsistent single-phase description previously associated with this model. The unit draws a continuous input current of 151 A on supplies from 380 to 440 V and delivers up to 73 A at the motor terminals across the same voltage range. Motor output current decreases to 65 A when the supply voltage exceeds 441 V. Apparent power reaches 50.6 kVA at 400 V, while an overall efficiency of 0.96 results in an estimated heat loss of 1,480 W that must be removed from the enclosure. The control board can generate pulse trains for flow meters or counters at frequencies up to 32 kHz.
An upstream fuse rated at no more than 250 A protects the input conductors against excessive current. The internal overload timer permits 110% torque for 1 minute, allowing the drive to accommodate brief increases in pump or blower demand. Ambient air can reach 50 °C before output derating is required, so enclosure ventilation must maintain suitable airflow around the drive. Conductors with cross-sectional areas of up to 120 mm² may be used for motor and braking connections. Shielded motor cables may extend up to 150 m, while unshielded cables may extend up to 300 m for installations with remote pumps. These cable limits provide routing flexibility while preserving the electrical performance required between the drive and connected motor.
