On-line DC/AC inverter INV

three-phasehigh-frequencyPWM

The AUNILEC INV series offers a range of one- and three-phase inverters with IGBT power conversion bridge. The system has been designed to continuously supply extra-low harmonics AC current to critical loads. The integrated static switch can automatically perform quick switching operations on the DC line, in case of black-out only, to substantially increase the global efficiency; it can also perform an ON-LINE conversion, in which the wave form is always generated by the inverter, thus ensuring a stable, undistorted waveform. In this case the load is switched to the emergency line only in case of inverter failure. The fast control system and the high-frequency PWM technology allow to connect the inverter to non-linear loads with a very low waveform distortion. The graphical display allows to show an easy to understand one-line diagram displaying the current status of the inverter and of the static switch, thus providing an accurate overview of the alarms and measurements. Specifications - Clean and stable output AC with THD 98%; on-line mode: >93%. - Manual by-pass switch, allowing to perform maintenance operations without disconnecting the load. - Possibility to supply a non-linear load with minimum distortion thanks to the high-frequency IGBT technology. - Fuse protection on both the inverter and the emergency line, with burnt fuse identification and automatic insertion on the functional branch. - Wide range of input voltages. - Digital microprocessor control (DSP + PLD).