Phase sequence protection relay U3 series

phase unbalancephase lossvoltage

The U3S has two potentiometers that has minimum and maximum adjustable thresholds. The one potentiometer has a tripping time delay and it's adjustable. It secures three-stage establishments against voltage varieties between stages, inaccurate arrangement of stages and stage misfortune. Lastly, Model U3S-420 is valid for 400 and 440 nominal V This device is fit to protect three-phase deployments against varieties in primary voltage. Delicate to off base stage arrangement. Material in generators. Greatest and least limits could be balanced independently. Two free yield transfers and reset time delay movable. Lastly, U3N is also fit to protect Suitable to ensure three-stage with unbiased establishments against varieties in fundamental voltage and misfortune of impartial. Delicate to erroneous stage grouping.Material in generators. Greatest and least edges might be balanced independently. Two free yield transfers.Reset time delay flexible and screens nonpartisan.