ELECTRICAL SWITCHING APPARATUS AND PROTECTION APPARATUS DETERMINING THERMAL AGE OF ANOTHER APPARATUS OR A NUMBER OF INSULATORS
First Claim
1. An electrical switching apparatus for another apparatus including a number of insulators, a number of temperature sensors operatively associated with said number of insulators, and a number of conductors operatively associated with said number of insulators, said electrical switching apparatus comprising:
- a number of separable contacts;
an operating mechanism structured to open and close said number of separable contacts;
a number of sensors structured to sense a number of currents flowing through said number of separable contacts and through said number of conductors;
a processor structured to input the sensed number of currents from said number of sensors; and
an output,wherein said processor is further structured to calculate at least one of;
(a) a thermal age of said another apparatus from a number of sensed temperatures from said number of temperature sensors, and (b) the thermal age of said another apparatus from said sensed number of currents, andwherein said output includes the thermal age of said another apparatus.
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Accused Products
Abstract
An electrical switching apparatus is for another apparatus including a number of insulators, a number of temperature sensors operatively associated with the number of insulators, and a number of conductors operatively associated with the number of insulators. The electrical switching apparatus includes a number of separable contacts, an operating mechanism structured to open and close the separable contacts, a number of sensors structured to sense a number of currents flowing through the separable contacts and through the conductors, a processor structured to input the sensed currents from the sensors, and an output. The processor calculates at least one of: (a) a thermal age of the other apparatus from a number of sensed temperatures from the temperature sensors, and (b) the thermal age of the other apparatus from the sensed currents. The output includes the thermal age of the other apparatus.
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Citations
22 Claims
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1. An electrical switching apparatus for another apparatus including a number of insulators, a number of temperature sensors operatively associated with said number of insulators, and a number of conductors operatively associated with said number of insulators, said electrical switching apparatus comprising:
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a number of separable contacts; an operating mechanism structured to open and close said number of separable contacts; a number of sensors structured to sense a number of currents flowing through said number of separable contacts and through said number of conductors; a processor structured to input the sensed number of currents from said number of sensors; and an output, wherein said processor is further structured to calculate at least one of;
(a) a thermal age of said another apparatus from a number of sensed temperatures from said number of temperature sensors, and (b) the thermal age of said another apparatus from said sensed number of currents, andwherein said output includes the thermal age of said another apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A protection relay for an apparatus including a number of insulators and a number of temperature sensors operatively associated with said number of insulators, said protection relay comprising:
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an input structured to input a number of sensed temperatures from said number of temperature sensors; a processor structured to calculate a thermal age of said number of insulators from said number of sensed temperatures; and an output including the thermal age of said number of insulators. - View Dependent Claims (18, 19)
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20. A protection relay for an apparatus including a number of insulators and a number of conductors operatively associated with said number of insulators, said protection relay comprising:
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a number of sensors structured to sense a number of currents flowing through said number of conductors; a processor structured to input the sensed number of currents from said number of sensors and to calculate a thermal age of said number of insulators from said sensed number of currents; and an output including the thermal age of said number of insulators. - View Dependent Claims (21, 22)
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Specification