Product Description:

The RZS01.1-6-099 is a sinusoidal filter produced by Bosch Rexroth Indramat within the RZS Sinusoidal Filters series. Installed between an inverter and a motor, it reshapes pulse-width-modulated output into a waveform that is much closer to a sine wave, which reduces dv/dt stress on motor windings and helps limit electromagnetic interference. This can reduce stress on insulation systems and lessen reflected-wave effects on longer motor cables. The unit belongs to product line 01 and is intended for industrial drive systems that require cleaner motor-side voltage.

The filter accepts a line-to-line connecting voltage of 3 x AC 380 ... 400 V, so it can be connected to common low-voltage three-phase supplies. An allowable variation of ±15 % helps it remain suitable during normal supply fluctuations without changing its intended filtering behavior. The winding set is rated for a continuous nominal current of 99 A, which keeps the magnetic components within their intended operating range during sustained motor load. Electrical tuning is matched to a carrier frequency of 8 kHz, allowing the filter to work properly with compatible inverter switching patterns. Under rated load, the unit dissipates 300 W as heat, so enclosure airflow or another suitable heat-removal method is necessary.

Within a passband of 0 ... 200 Hz, the filter keeps voltage drop low enough for the motor terminal voltage to follow the drive output closely across the normal operating range. Terminal spacing, clearances, and conductor sizing are matched to converter power classes 055 / 075, which helps the unit fit cabinets arranged around those converter sizes. The product is Version 1. Applications with long motor leads or stricter noise limits often use this type of filter to smooth inverter output before it reaches the motor.