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US 2011/0257924 A1Published application
Self-monitoring and communicating transformer
AssigneesSouthern California Edison Company, Howard Industries, Inc.
InventorsGregory A. Bryant, Richard Hollingsworth, Samuel A. Impastato, Yu-Loong Liew, Allen John Thiel, III, Joe James Salazar
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Abstract
A self-monitoring transformer is disclosed. The transformer uses sensors embedded in the coils to determine the expected lifespan of the insulation, as well as other operating parameters, and communicates that information to an external system.
Claims21
A self-monitoring transformer comprising:
- a. a transformer;
- b. internal temperature sensors;
- c. circuitry for estimating remaining insulation life;
- and
- d. a communication interface.
2 more elements
A self-monitoring transformer comprising:
- a. a transformer;
- b. internal thermal sensors;
- and
- c. circuitry for monitoring operating conditions.
1 more element
A self-monitoring transformer comprising:
- a. a thermal sensor embedded in the low-voltage coil;
- b. circuitry to extrapolate the temperature at the transformer's hottest spot;
- c. circuitry to calculate insulation aging data;
- and
- d. means for transmitting said insulation aging data.
2 more elements
Dependencies are inferred from the claim text.