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US 7,460,348 B2Granted
Overload detector/enunciator
OwnerAlexander S. Filippenkoinventor
Life of this patent
Estimating the term…
Abstract
An overload detector/enunciator circuit. The overload detector/enunciator circuit detects an overloaded condition of a backup generator and provides a relatively immediate indication of the overload to occupants of the residence or facility receiving power from the backup generator such that correction of the overload condition can be effected before any damage to the generator or load devices can occur.
Claims32
An overload detector/enunciator circuit comprising:
- a power supply connected to an electrical distribution system and providing power to the overload detector/enunciator circuit;
- a reference signal generator providing a reference signal representative of a desired value of at least one component of the electric power provided by the power supply to the electrical distribution system;
- a power quality signal taken directly from the electrical distribution system and being representative of the actual value of the same component of the electric power in the electrical distribution system as provided by the reference signal generator;
- a power supply overload detector receiving the reference signal and the power quality signal, the overload detector deriving an alarm threshold from the reference signal, evaluating the power quality signal with respect to the alarm threshold and providing a power supply overload signal when the power quality signal is below the alarm threshold, the power supply overload signal indicating that power consumption in the electrical distribution system is exceeding the power supply capacity, and;
- at least one enunciator device providing an alarm in response to receiving the power supply overload signal.
2 more elements
An overload detector/enunciator circuit for detecting an overload condition in an electrical distribution systems receiving power from a backup generator comprising;
- a backup generator connected to an electrical distribution system and providing power to the overload detector/enunciator circuit;
- a reference signal generator providing a reference signal representative of the backup generator manufacturer's specified value of at least one component of the backup generator's electric power;
- a power quality signal taken directly from the electrical distribution system and being representative of the actual value of the same component of the backup generator's electric power being provided to the electrical distribution system as provided by the reference signal generator;
- a generator overload detector receiving the reference signal and the power quality signal, the overload detector deriving an alarm threshold from the reference signal, evaluating the power quality signal with respect to the alarm threshold and providing a generator overload signal when the power quality signal is below the alarm threshold, the generator overload signal indicating that power consumption in the electrical distribution system is exceeding the generator capacity, and;
- at least one enunciator device providing an audible and/or visible alarm in response to receiving the generator overload signal.
2 more elements
Dependencies are inferred from the claim text.