ABB OFAF1H315（1SCA022627R4730）HRC FUSE LINK

ABB OFAF1H315（1SCA022627R4730）HRC FUSE LINK

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As mentioned, the dead time should be selected on the one hand to prevent shoot-through of the bridge, and on the other hand should be as short as possible to ensure the correct operation of the voltage source inverter. Thus, calculating the correct dead time for a dedicated IGBT device and driver is a challenge. 

At times, dead time is calculated by simply multiplying the values from the typical datasheet with a safety factor obtained from field experience. This method works in some cases, but is generally not accurate enough. The measurements shown here intend to provide a more precise approach. 

Since the IGBT datasheet only lists typical values for standardized operating conditions, it is necessary to determine the maximum values for the operating conditions. For this purpose, a series of measurements are made to obtain the correct value for the delay time and then calculate the dead time.

ABB OFAF1H315（1SCA022627R4730） Technical drawing:

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