In this video, we will walk you through the proper process for simply checking to see if your IGBT has failed using a multimeter. An Insulated Gate Bipolar Transistor, or IGBT, is a three-terminal semiconductor device used as a high-efficiency electronic switch. It is commonly found in high-voltage, high-current applications with low power inputs. Some common uses include induction cooktops, AC and DC motor drives, and in Pillar’s own P6000 and P7000 Power Supplies.
For safety, ensure that the power supply is turned off and locked out using proper lockout/tagout procedures. Only test the IGBT if the power supply has failed, or you are experiencing a DC bus fault. To check if your IGBT has failed, set your multimeter to diode mode and follow these steps.