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Is there a need for discrimination distance between up- and downstream fuse-links?

April 26, 2017discrimination distance Downstream fuse-links up-

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Is there a need for discrimination distance between up- and downstream fuse-links?

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Yes, discrimination between upstream MV-fuse and downstream LV-fuse is obtained by comparison of time current curves for the two fuses using an appropriate transformation ratio to take account of the voltage difference of the two circuits.