There may already be thermal overcurrent protection in the control gear. ![]() ![]() ![]() To use it to disconnect both windings you would need to run two more wires back to the control box and connect it in series with the live feed to the forward and reverse contactors. This will now only disconnect the main winding. Connect the wire marked Z2 to terminal Z2. Connect the wire labeled Z1 to terminal V1. Connect the wire labled U2 to terminal V2. Connect the wire labled U1 to terminal U1. Remove the two metal straps but put the wires back on the same terminals. If you get these reading then the following instructions should do what you want. There should be a very high resistance (Greater than 50 Meg ohms.) between a terminal that had a red wire and a terminal that had a black wire. ![]() You should also measure a low resistance between the teminals that had the black wires connected to them. If I am right then on the old motor you should measure a low tesistance (Less than 20 ohms.) between the teminals that had the red wire connected to them. I think red is one winding and black is the other winding. I don't think the way you have labled the wires as live and neutral is correct.
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