22.Z1.C05-1000 KEB
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The KEB 22.Z1.C05-1000 is part of the Z1 Sine Wave EMC Filters series and supports a rated current of 90 Amps at 480 Volts, with a rated power of 75 horsepower. This filter has an overload capacity of 150 percent for 60 seconds every 10 minutes and offers an enclosure rating of IP20. It operates at a mains frequency of 60 Hz and reaches efficiency higher than 99 percent at rated current.
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Product Description:
The 22.Z1.C05-1000 is manufactured by KEB as part of the Z1 Sine Wave EMC Filters series. This sine-wave output filter is installed between an inverter and an induction motor to attenuate high-frequency components and reduce differential-mode noise on long motor leads. By presenting a near-sinusoidal voltage to the motor, the unit reduces insulation stress, audible switching noise, and leakage currents in industrial automation systems that use pulse-width-modulated drive outputs. It is intended for applications where long cable runs or motor protection concerns make output waveform conditioning beneficial. It can also help lower bearing stress associated with fast voltage edges at the motor terminals.
The filter is rated for a line voltage of 480 V and a continuous load current of 90 A, supporting drive systems up to 75 hp. At that load, total current harmonic distortion stays at 8 percent or less, and internal power dissipation is limited to 825 W. Its efficiency is greater than 99%, which helps reduce heat buildup inside the enclosure. The design operates at 60 Hz and has an IP20 enclosure rating, so it must be installed inside a protected panel. M8 ring and ground studs are provided, the terminals accept 2 AWG conductors, and the copper lugs are tightened to 12 N·m. Upstream protection can be selected with a motor starter setting of 36 A and maximum circuit protection of 130 A.
The filter tolerates overloads of up to 150% for 60 s / 10 min, giving the inverter time to accelerate large loads without saturating the inductor core. That overload allowance is useful during ramp-up events, when motor current rises above the steady-state level for a short period before settling back to normal operation. If a fault exceeds the branch rating, the assembly is tested to withstand a symmetrical short-circuit level of 10 kA, which matches common motor control center sections. Secure copper-lug connections help limit temperature rise at the termination points during continuous operation. Busbars sized for the stated conductor range support stable current transfer without excessive localized heating.
