Protective device for capacitor bank
AssigneeASEA Aktiebolag
InventorsPer Danfors, Nils Fahlen, Owe Nerf
Life of this patent
Estimating the term…
Abstract
A protective device for a capacitor bank is coupled to a cross-connection between equipotential points in two sub-banks forming the bank. Current or voltage surges, indicative of a capacitor failure are counted and when a threshold level is exceeded, an alarm may be energized.
Claims7
A protective device for a capacitor bank comprising two parallel capacitor sub-banks, each consisting of capacitor units, which protective device comprises at least one cross-connection means connected between equipotential points in the two sub-banks, characterized in that sensing means is connected to said cross-connection for sensing current surges in the cross-connection means resulting from one or more short-circuits in a capacitor unit, and counter means coupled to said sensing means for counting said current surges.
Dependencies are inferred from the claim text.