Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
187 words
A fault-cutout desensitizing zero-ground device comprising in combination: a first plurality of primary coils having zero ground, each primary coil of said plurality having a lead connectable to a separate phase; a second plurality of secondary coils connected in series and in closed-circuit cycle with oneanother, said secondary coils and said primary coils being arranged relative to one another such that each of said arranged primary coils is induceable of current flow through said secondary and such that each arranged secondary coil is induceable of counter current into a matched-up one of said primary coils, said series including a fuse means of preset maximum current flow flowable before breaking circuit of said series, whereby when respective said leads of said first plurality are operatively connected to a multi-phase circuit a fault below a predetermined magnitude in a circuit of a lead of one of said first plurality results in an induced current into the faulted primary coil from a matched one of said secondary coils until an increased magnitude of current flow in the secondary coils causes said fuse means to break the circuit of said series.
Claim 2
Dependent Claim
187 words
A fault-cutout desensitizing zero-ground device comprising in combination: a first plurality of primary coils having zero ground, each primary coil of said plurality having a lead connectable to a separate phase; a second plurality of secondary coils connected in series and in closed-circuit cycle with oneanother, said secondary coils and said primary coils being arranged relative to one another such that each of said arranged primary coils is induceable of current flow through said secondary and such that each arranged secondary coil is induceable of counter current into a matched-up one of said primary coils, said series including a fuse means of preset maximum current flow flowable before breaking circuit of said series, whereby when respective said leads of said first plurality are operatively connected to a multi-phase circuit a fault below a predetermined magnitude in a circuit of a lead of one of said first plurality results in an induced current into the faulted primary coil from a matched one of said secondary coils until an increased magnitude of current flow in the secondary coils causes said fuse means to break the circuit of said series.
Claim 3
Dependent Claim
91 words
A device of claim 1, including a plurality of additional fuse means with each of said plurality of phases leads being operatively in series with one of said additional fuse means, and each of said additional fuse means being present at a circuit-breaking degree of magnitude of current in excess of preset fuse means of said secondary coils such that said secondary coils fuse means is breakable of the circuit of said secondary coils series closed circuit piror to the breaking of circuit by any one of said additional fuse means.
Claim 4
Dependent Claim
24 words
A device of claim 2, in which said plurality of primary coils comprises three coils and said plurality of secondary coils comprises three coils.
Claim 5
Dependent Claim
22 words
A device of claim 3, in which said primary coils are WYE wound coils and said secondary coils are DELTA wound coils.
Claim 6
Dependent Claim
20 words
A device of claim 4, including connected in parallel with said secondary coils fuse means at least one alarm means.
Claim 7
Dependent Claim
16 words
A device of claim 5, including a ground connected to the circuit of said secondary coils.
Claim 8
Dependent Claim
20 words
A device of claim 1, including connected in parallel with said secondary coils fuse means at least one alarm means.
Claim 9
Dependent Claim
16 words
A device of claim 7, including a ground connected to the circuit of said secondary coils.
Claim 10
Dependent Claim
86 words
A device of claim 8, including in parallel with said sEcondary coils fuse means a time delay means connected to break circuits of each of said primary coils leads for a predetermined period of time before closing the broken circuit, in the nature of a shunt, whereby for a false-fault-indication or a correctable fault, said secondary coils fuse means and said time delay means fail to break their respective circuits prior to the shunt-breaking of the lead circuits and the subsequent reclosing of the lead circuits.
Claim 11
Dependent Claim
86 words
A device of claim 2, including in parallel with said secondary coils fuse means a time delay means connected to break circuits of each of said primary coils leads for a predetermined period of time before closing the broken circuit, in the nature of a shunt, whereby for a false-fault-indication or a correctable fault, said secondary coils fuse means and said additional fuse means fail to break their respective circuits prior to the shunt-breaking of the lead circuits and the subsequent reclosing of the lead circuits.