25.Z1.F04-1010 KEB
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The KEB 25.Z1.F04-1010 is a sine wave EMC filter from the Z1 Sine Wave EMC Filters series. This three-phase filter supports a rated voltage of 400 VAC and a rated current of 210 A, with a maximum voltage up to 550 V. It features an inductance of 0.06 mH, a power loss of 270 W, and weighs 23.4 kg.
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Product Description:
The 25.Z1.F04-1010 sine wave EMC filter is manufactured by KEB as part of the Z1 Sine Wave EMC Filters series. Positioned between a pulse-width-modulated drive and an AC motor, the filter smooths steep voltage edges, lowers bearing currents, and cuts radiated noise that can disturb nearby PLCs and fieldbus links. In production lines and test stands, it supports stable operation by converting the inverter output into a cleaner sinusoidal waveform, allowing long motor cables and helping equipment meet demanding electromagnetic compatibility requirements. This arrangement also reduces stress on motor insulation and supports quieter operation in systems that are sensitive to high-frequency switching effects.
At the electrical level, the filter presents an inductance of 0.06 mH, which limits the rate of current change through each phase. It is intended for systems that run on 400 VAC mains and can conduct up to 210 A continuously without core saturation. The design maintains its attenuation when the inverter carrier reaches 2 kHz and still allows the motor to operate at fundamental frequencies up to 100 Hz. Mechanical dimensions also affect cabinet layout, with a body depth of 153 mm, an overall depth of 196 mm with terminal covers, and a height of 234 mm. Two rectangular 10 × 16 mm mounting slots simplify fastening to a backplate and allow small alignment adjustments during installation.
The housing spans 316 mm in width and weighs 23.4 kg, so the mounting surface must support both the static load and vibration from adjacent equipment. During full-load filtering, it converts 270 W of heat, so enclosure ventilation must be planned to prevent heat buildup around nearby components. While optimized for the rated network, the insulation system withstands transient line peaks up to 550 V without breakdown. The unit is built for three-phase operation, which keeps impedance consistent across conductors and supports balanced suppression of conducted emissions. Its form factor is suited to fixed cabinet installation where predictable thermal behavior and clean motor waveforms are required.
