H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/124
H01H 37/76 (2006.01) H01H 31/12 (2006.01)
Patent
CA 1098938
OFFSET, SERIES CONNECTED CURRENT LIMITING FUSE AND EXPULSION FUSEHOLDER ASSEMBLY FOR OPENGATE CUTOUT ABSTRACT OF THE DISCLOSURE A combination dropout assembly adapted for use with protective cutouts in an electrical distribution system com- prises a current limiting fuse electrically connected in series with an expulsion-type fuse, and mechanically coupled in skewed relation to the latter, whereby the assembly provides reliable full range fault current protection yet is sufficiently com- pact in length to matingly span the gate between conductive terminals of conventional 15 KV class opengate cutouts found in many existing electrical distribution systems. Overload and low to medium fault current protection is provided by the expulsion fuse, while high range fault currents are cleared by operation of the current limiting fuse. The oblique arrangement of the fuses relative to one another permits venting from either end of the expulsion fuse without direct- ing potentially detrimental gases toward the current limiting fuse, and further allows the combination of various sizes of current limiting fuses and expulsion fuses in the make-up of the dropout assembly such that protection characteristics of the latter may be tailored to preserve coordination of a particular distribution system. (Dkt. 15890)
309957
Beard Lloyd R.
Goe Melvin B. Jr.
Chance (a. B.) Company
Gowling Lafleur Henderson Llp
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