The KEB COMBIVERT is a frequency inverter with DC-voltage link. The unit is exclusively designed as stepless speed control of three-phase AC motors. Its functionality is based on PWM (pulse-width modulation).
The internal circuit of a frequency inverter contains basically only three stages:
The mains rectifier takes the single or three-phase main power supply and via a rectifying bridge converts the AC-voltage into a DC-voltage.
Client: Repaired KEB 09.F4.C1D-3420/1.4 Frequency Inverter
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