26.Z2.F04-1003 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The 26.Z2.F04-1003 is a three-phase motor choke manufactured by KEB and part of the Z2 Three Phase Motor Chokes series. It supports a rated current of 250 Amps, a rated voltage of 400 VAC, and has a maximum operating voltage of 550 Volts. The choke features an inductance of 0.049 mH, a total weight of 41 kilograms, and a conductor area of 95 mm².
Internal Product Review
The 26.Z2.F04-1003 is a KEB Z2 three-phase motor choke with a 250 A rated current and 550 V maximum operating voltage. Low 0.049 mH inductance and a 20% voltage drop support stable line conditioning in demanding drive applications. A strong choice for high-current installations requiring dependable three-phase filtering.
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Product Description:
The 26.Z2.F04-1003 is a three-phase motor choke produced by KEB within the Z2 Three Phase Motor Chokes series. The component is installed between a frequency inverter and an induction motor to smooth the output waveform and reduce differential currents that could otherwise stress winding insulation and generate heat. By adding distributed inductance, the choke helps lower dV/dt, protect motor bearings, and limit high-frequency output components in automated conveyor lines, pumps, and similar equipment. This arrangement can also reduce the electrical stress associated with long motor cables and rapid inverter switching.
The choke handles a continuous line current of 250 A when connected to drives that supply up to 400 VAC. Its core and windings provide an inductance of 0.049 mH; this reactance attenuates high-frequency components without producing excessive voltage drop. A winding resistance of only 1 mΩ minimizes real power dissipation during steady-state operation, while a rated voltage drop of 20% indicates the permissible reduction in fundamental voltage across the choke at full load. For applications with regenerative peaks or line transients, the insulation system withstands a maximum operating line voltage of 550 V, helping maintain safe clearance and creepage distances. These electrical characteristics allow the choke to carry substantial motor current while limiting losses in the windings.
The assembly contains 16.5 kg of copper and laminated iron, bringing its total weight to 41.0 kg. When driven by pulse-width-modulated carriers near the motor’s base speed, losses reach 492 W at a switching frequency of 600 Hz and rise to 732 W at 1600 Hz; these values help determine cabinet ventilation requirements and heat sink placement. The steel base measures 370 mm by 170 mm, while the overall width, including the coil and cable, is 300 mm. The height up to the clamping terminals is 435 mm, providing a clear reference for enclosure spacing. A conductor cross section of 95 mm² accommodates appropriately rated flexible conductors or busbar connections for all three phases.
