15.Z2.F04-1003 KEB
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The KEB 15.Z2.F04-1003 is a three-phase motor choke from the Z2 Three Phase Motor Chokes series. It features a nominal voltage of 400 VAC and a rated current of 24 Amps, with a conductor cross-section of 10 mm². The unit has an inductance of 0.383 mH, supports switching frequencies up to 16 kHz, and weighs 6.6 kilograms.
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Product Description:
The 15.Z2.F04-1003 is a three-phase motor choke produced by KEB for the Z2 Three Phase Motor Chokes series. Installed on the output side of a variable-frequency drive, the unit limits current ripple and attenuates high-frequency switching components. This filtering exposes induction motors to smoother sinusoidal waveforms and reduces the electrical stress associated with pulse-width modulated drive outputs. The choke is suitable for motor circuits used in automated conveyors, pumps, presses, and other industrial machinery.
The choke has a nominal operating voltage of 400 VAC and carries a continuous current rating of 24 A, allowing it to operate with medium-power drives in factory distribution panels. Its magnetic core and winding geometry provide an inductance of 0.383 mH, which introduces the reactance needed to control motor surge currents. The allowable impedance voltage is 20 %, keeping the resulting voltage drop within the intended operating range. Designed for three-phase systems, the coil set uses copper conductors with a cross-sectional area of 10 mm² to limit resistive losses. The operating range begins at 0 Hz, allowing the choke to withstand static DC magnetization during drive startup without saturating the magnetic core.
A rated insulation voltage of 550 V provides headroom above the operating voltage and supports regenerative overshoot that may occur when high-inertia loads decelerate. The iron and copper assembly supports motor-side frequencies up to 1600 Hz, while the internal design accommodates drive switching rates from 5 kHz to 16 kHz. Power loss is 66 W at 800 Hz, and the resulting heat is dissipated through the laminated frame. The complete assembly has a mass of 6.6 kg, of which 1.8 kg is copper. This copper content provides electrical conductivity and an effective thermal path that helps stabilize winding temperature during continuous operation.
