| VACON OYJ Patent applications |
| Patent application number | Title | Published |
|---|
| 20110270545 | MEASURING OF EARTH FAULT CURRENT - Method and apparatus for measuring an earth fault current in an output circuit of an inverter (INU) operating on the PWM principle and forming alternating-current voltage from direct-current voltage, the output currents (i | 11-03-2011 |
| 20110044080 | CONVERTER - A converter includes a converter bridge ( | 02-24-2011 |
| 20100253256 | FREQUENCY CONVERTER START-UP - Method and apparatus to start a frequency converter equipped with a direct current intermediate circuit, particularly when a permanent magnet motor whose rotor is rotating at the start-up time is connected to it, wherein the frequency converter has a network bridge ( | 10-07-2010 |
| 20080259658 | Limit for the harmonics of a current - A wiring arrangement and an appliance for limiting the harmonics of a current supplied to a frequency converter from an AC electricity supply network, which frequency converter can be connected to a three-phase AC electricity supply network, in which frequency converter is an uncontrolled network bridge ( | 10-23-2008 |
