Asco Power Technologies, L.p.

Robert Siciliano

James M Daley

John E Hayes

Mario Ibrahim

Daniel G Scheffer

Methods and systems for transfer-switch controller backup and transfer-switch controller operation are provided. An example backup apparatus includes a memory configured to store transfer-switch data related to a first transfer-switch controller, wherein the first transfer switch-controller is a controller for a given transfer switch. The apparatus is capable of interfacing with a communication interface of the first transfer-switch controller. The apparatus is further capable of being removed from the communication interface of the first transfer-switch controller and thereafter interfacing with a communication interface of a second transfer-switch controller, wherein the second transfer-switch controller is a replacement controller for the given transfer switch. The memory is further configured to, after the apparatus interfacing with the communication interface of the second transfer-switch controller, provide the transfer-switch data related to the first transfer-switch controller to the second transfer-switch controller.

Methods and systems for dynamic memory backup for transfer-switch controllers

An automatic transfer switch (ATS) for supplying power to a load is provided. The ATS includes a main transfer switch portion configured to connect one of a first or second power source to the load. The ATS also includes a bypass transfer switch portion configured to form a bypass connection from either the first or second power source to the load. The bypass transfer switch portion includes (i) a first bypass switch configured to connect the first power source to the load upon closing of the first bypass switch and (ii) a second bypass switch configured to connect the second power source to the load upon closing of the second bypass switch. Further, the ATS includes a primary load connection connecting the main transfer switch portion to the load, where the primary load connection is formed at least in part by the first and second bypass switches.

Transfer switch with bypass topology

A system and method are presented to detect and account for regenerated voltage in a three phase power source failures. The method involves monitoring a power source for phase voltage unbalances to determine the presence of a single phase failure. If the voltage unbalance caused by the single phase failure is restored before a sensing timer expires, a regenerated voltage condition is detected and retransfer to the power source is inhibited. Retransfer to the power source may be delayed by a period determined by a retransfer time value, in order to prevent transfer cycling between the preferred power source and an alternate power source. In addition, retransfer inhibiting may be terminated due to user interaction, power source voltage readings indicating a repair state, or by failure of an alternate source.

System and method for the detection of regenerated AC voltage

Method and system for identifying an islanding event in a utility grid. Method includes generating a user defined control signal and applying the user defined control signal to a distributed resource interconnected to the utility grid. The user defined control signal is used to alter at least one operating parameter. In one arrangement, the user definable unintentional islanding control signal includes a first signal defining a first peak disturbance and a second signal defining a second peak disturbance. The user definable unintentional islanding control signal is used to alter at least one operating parameter of said distributed resource.

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Boonton, NJ, United States of America

Robert Siciliano