The power and control circuits of a star-delta starter are discussed in this article with the help of an actual star-delta starter wiring diagram. You can find the instructions to calculate the ratings of contactors for a star-delta starter circuit here:Star-Delta starter design tool. Further ...
Star-delta starters are widely used for starting three-phase induction motors. It can reduce current inrush to 1/3 of direct-on-line starting current. Here is an advanced Star-Delta starter design tool that will help you select the optimum current rating of contactors, fuses, and circuit bre...
西门子自动Star-Delta 3TE05 2AR0系列操作说明
4.1 Check the (three-phase mains voltage) during starting and running. Voltage may drop to 70% during starting and at 95% during running. 4.2 Check the motor starting and running current. 5. Check that the (Delta contactor) is [AC-3 rated], see above 2. An AC-2 rated contactor ...