19.F4.087-H419 KEB
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The KEB 19.F4.087-H419 is a frequency inverter in the F4 Combivert Frequency Inverters series. It features a maximum rated motor power of 30 kW, an output nominal current of 60 Amps, and supports a mains voltage range of 305 to 500 Volts. The inverter has a protection rating of IP20 and operates within a temperature range of -10 to 45 degrees Celsius.
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Product Description:
The 19.F4.087-H419 is a frequency inverter produced by KEB for the F4 Combivert Frequency Inverters series. Classified as a COMBIVERT F4 device, it converts fixed-frequency three-phase input into variable-frequency output for regulating induction motor speed in conveyors, pumps, extruders, and other automated machinery. Designed for integration with PLC-based control systems, the unit modulates pulse-width modulation waveforms to respond to dynamic load demands while maintaining efficient operation. It connects directly to industrial mains and is intended for installation inside a control cabinet.
A three-phase input range of 305–500 V accommodates the supply tolerance commonly found in factory distribution networks, while the internal topology belongs to the 400 V class, eliminating the need for an isolation transformer. The inverter provides a continuous apparent power output of 42 kVA, which supports a rated motor output of 30 kW under nominal operating conditions. This capacity makes the drive suitable for compatible IEC motor frames used with compressors, large fans, and similar industrial loads. The power stage supplies up to 60 A of fundamental current, while the carrier devices switch at 2 kHz to balance acoustic noise, motor heating, and electromagnetic emissions.
The permitted ambient temperature range is -10 to 45 °C, allowing operation in most production areas without auxiliary climate control. Functional integrity is maintained at relative humidity levels up to 95%, provided that condensation does not form on or inside the unit. The enclosure has an IP20 protection rating, preventing finger contact with internal electronics but offering no protection against water. Because the housing does not provide complete dust or splash protection, the inverter requires installation within an appropriately sealed control cabinet. Adequate cabinet ventilation and the stated operating conditions help the power stage remain within its intended thermal limits during continuous-duty operation.
