RZF02.1-4-018 Bosch Rexroth Indramat
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MPN: R911201111
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The Bosch Rexroth Indramat RZF02.1-4-018 is a radio interference filter from the RZF Line Filters series. It is designed for use with frequency converters in the 11 to 18.5 kW power class and operates at a nominal voltage of 3 x AC 380 to 480 volts. The filter has an IP20 protection rating, supports a mains frequency of 50/60 Hz, and weighs 2.1 kilograms.
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Product Description:
Bosch Rexroth Indramat manufactures the RZF02.1-4-018 as part of the RZF Line Filters series. The unit is a radio interference filter intended for integration in industrial automation cabinets ahead of inverter drives. By attenuating high-frequency noise on the supply conductors, it helps keep conducted emissions within the limits applicable to factory-floor installations. It supports converters up to 18.5 kW and works with three-phase networks common to conveyor, packaging, and machining equipment.
During installation, the filter connects to a three-phase supply rated at 3 x AC 380 to 480 V ±10%, so its terminals match the voltage range used by many European and North American plants. It supports a line frequency of 50/60 Hz, allowing the connected frequency converter to draw power without added distortion at the fundamental frequency. Wiring is landed on screw terminals sized for 10 mm² conductors, which is suitable for the nominal current ranges seen at this power level. The housing carries a protection category of IP 20, indicating finger-safe openings that still require an enclosed control cabinet. Reliable operation is permitted at ambient temperatures from 0 to 40 °C, and environmental class 3K3 confirms suitability for dry, ventilated indoor areas. The component weighs 2.1 kg, which keeps panel loading low. Design code 1 under line 02 indicates the mechanical dimensions and mounting hole pattern within the series.
The filter is dimensioned for converters in the 11, 15, and 18.5 kW power classes. Current capability changes with the drive’s switching frequency: it carries 39 A when the inverter switches at 4 kHz, 29 A at 10 kHz, and 24 A at 12 kHz. These ratings allow selection of a switching frequency that balances acoustic noise and efficiency while staying within the filter’s thermal limits. Matching the converter’s programmed carrier frequency to one of these current limits helps maintain conducted-noise suppression without overloading the passive components.
Frequently Asked Questions about RZF02.1-4-018:
Q: What is the nominal voltage range for the RZF02.1-4-018 line filter?
A: The RZF02.1-4-018 filter supports a nominal voltage of 3 x AC 380 ... 480 V, with a tolerance of +/- 10%.
Q: What is the highest nominal current rating for the RZF02.1-4-018 filter?
A: This model can handle a maximum nominal current of 39 A when the switching frequency is set to 4 kHz.
Q: What frequency converter power classes are suitable for use with the RZF02.1-4-018 filter?
A: The RZF02.1-4-018 is designed for frequency converter power classes of 11, 15, and 18.5 kW.
Q: What degree of environmental protection does the RZF02.1-4-018 filter offer?
A: The degree of protection for this filter is rated at IP 20, providing limited protection against solid objects and no protection against liquids.
Q: What is the terminal connection size for the RZF02.1-4-018 line filter?
A: This line filter is equipped with 10 mm² connection terminals for secure wiring connections.
