21.Z1.C05-1000 KEB
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The KEB 21.Z1.C05-1000 is a sine wave EMC filter from the Z1 Sine Wave EMC Filters series with a rated current of 62 Amps and a rated voltage of 480 Volts. It features an efficiency greater than 99% and supports a maximum circuit protection of 90 Amps. The filter is designed for a 60 Hz mains frequency and offers an IP20 open type protection.
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Product Description:
The 21.Z1.C05-1000 sine wave EMC filter is manufactured by KEB as part of the Z1 Sine Wave EMC Filters series. Positioned between an inverter and its motor load, the component smooths the high-frequency switching edges generated by the drive, which helps protect cable insulation and limit conducted emissions. It is selected for automation lines that rely on adjustable-speed drives and must comply with plant electromagnetic compatibility rules. The filter is cabinet mounted and uses heavy-duty terminals that suit standard industrial wiring practices in industrial control panels with conventional cable routing.
Under nominal conditions, the filter carries 480 V three-phase power at a continuous line rating of 62 A. Electrical efficiency of more than 99% limits internal heating to 675 W at full load. For short overload periods, it endures 150% for 60 s every 10 min while maintaining magnetic stability. Its design matches a 60 Hz mains supply, and coordination with a 22 A manual motor starter permits localized protection. Upstream devices can be fused or breaker rated to 90 A, while grounding is provided through an M8 ground stud. Installation calls for 6 AWG copper conductors secured to the terminals with 4 Nm of torque to maintain the intended impedance path.
The filter is suited for drive applications up to 60 hp, and its assembly withstands fault currents of 10 kA without catastrophic rupture. Current total harmonic distortion at the drive terminals remains at 8% or less, helping connected motors operate within thermal limits. An enclosure classified as IP20 / Open Type requires placement inside a ventilated control panel to prevent accidental contact and to dissipate the documented power loss. This arrangement is commonly used in inverter-fed pumping, conveying, and forming equipment where smoother motor voltage and reduced stress on motor windings are needed.
