It is rated for a continuous current of 450 A, with a maximum of 500 A, and provides an inductance of 0.082 mH (82 µH) with a relative inductive voltage drop of 6% at the rated operating point. This choke limits the rate of rise of current (di/dt) and reduces harmonic distortion on the line side of the drive, protecting both the converter and upstream equipment.
The 450 A rated current (500 A maximum) is the continuous thermal current the choke can carry at its rated ambient temperature of 40 °C. For a 400 V, 50 Hz drive, this choke is sized for a motor load roughly in the 250–300 kW range, depending on the drive's input current draw. The 6% voltage drop is a standard impedance for commutating chokes — it provides effective harmonic mitigation without excessive voltage drop under load. The DC-rated current of 612.7 A is also listed, indicating the choke can handle a higher current in DC applications, but the primary rating is for AC three-phase use. Power loss is split between the coil (543 W) and the iron core (186 W), totaling about 729 W at full load. This heat must be dissipated; the IP00 enclosure means the choke is not sealed — it relies on natural or forced air circulation in the cabinet. Mounting in a well-ventilated area or with a dedicated fan is recommended, especially if the ambient cabinet temperature approaches 40 °C.
Physical integration and connection
The choke measures 0.41 m wide, 0.385 m high, and 0.229 m deep — a substantial component that requires a dedicated mounting footprint in the panel. The main current circuit uses flat-type connectors (busbar or large cable lugs), not screw terminals, so plan for bolted connections with appropriate torque. The IP00 protection class means the choke has no enclosure; it must be installed inside a cabinet that provides the required environmental protection for the overall assembly.