Product Description:

The HNF05.1E-500N-R1000-N-A5-NNNN is a passive mains filter produced by Bosch Rexroth Indramat for the HNF Mains Filters series. Installed between a regenerative drive package and the three-phase supply, the unit attenuates conducted interference and helps keep line-side harmonic energy within industrial limits. Because it is a passive filter, it conditions line behavior without adding switching electronics of its own. Its designation places it in version 05 of the family, and the filter is intended for cabinets that already provide mechanical protection because it has no integrated enclosure.

This filter has a degree of protection of IP00, so it must be mounted in a closed control cabinet to prevent accidental contact and debris entry. The power interface uses 3 input phases, matching common industrial supply topology. It accepts a line voltage of AC 380 to 690 V, and it can tolerate supply variation of -15% / +10% while remaining within its intended attenuation range. A built-in Y-capacitor network contributes a leakage capacitance of 500 nF, which provides a low-impedance path for high-frequency common-mode currents while keeping displacement current within protective-earth limits.

The current path is rated for a continuous load of 1000 A, allowing the filter to sit ahead of large regenerative inverters without added parallel components. It is intended for regenerative devices only, meaning the damping network is tuned for bidirectional power flow rather than simple rectifier noise suppression. Mechanical documentation identifies this hardware as design version 1, indicating the first release of the 05-series footprint. This arrangement suits high-power installations where braking energy is returned to the supply and where low series impedance is important for stable operation. The filter is intended for integration into busbar assemblies where low impedance and minimal voltage drop are required while still providing line-side attenuation for plant EMC performance.