Liebert Corporation

Vertiv Corporation

Gregg J Nelson

Jeffrey M Powell

James K Martin

Gerald R Vlasak

Terry Dwane Bush

Charles F Blair

The present disclosure relates to a load sharing system having a plurality of power supplies for powering a plurality of corresponding loads. Each one of the power supplies is associated with at least one of the loads. A power bus is also provided. A plurality of inductors is connected to the power bus. Each one of the inductors is further connected to at least one of the loads and to at least one of the power supplies, such that each adjacent pair of the inductors is connected in parallel relative to at least one of the loads. Each of the inductors has an inductance value sufficient so that if a fault develops on the power bus it serves to isolate the power supplies from the power bus. The inductance value further is such that if any one of the power supplies fails, the specific pair of inductors coupled in parallel to the load associated with the failed power supply allows the load to draw power over the power bus from other ones of the power supplies through the specific pair of inductors.

System and method for power sharing in a multiple UPS system

The present disclosure provides a method and system for mounting a current transformer in proximity to a circuit breaker of an electrical system. Generally, a plurality of current transformers (CTs) are provided to measure a plurality of branches from a main power supply and are accumulated on a sensor module. In at least one embodiment, the sensor module includes a molded polymer mounting support that can support the CTs. The polymer molded mounting support departs from the standard circuit board and is substantially less fragile. A wiring channel is provided within the sensor module so that CT output wiring can be safely routed to the output connector using as few as two soldered connections, rather than the typical six soldered connections required in existing branch monitoring systems. Multiple sensor modules can be stacked to allow continued alignment with the CTs and software/firmware/hardware can allow for any current polarity changes.

Sensor module, system, and method for sensors in proximity to circuit breakers

The present disclosure provides a method and system for mounting a current transformer in proximity to a circuit breaker of an electrical system. Generally, a sensor assembly contains a plurality of current transformers (CTs) for measuring power wires from a main power supply. To accommodate measuring a greater number of wires than one sensor assembly can service, a plurality of sensor assemblies can be mounted end-to-end. The sensor assemblies can have symmetrical recessed portions that laterally align when mounted end-to-end by inverting one of the sensor assemblies. The lateral alignment allows CTs mounted lateral to the recessed portions to be aligned with corresponding circuit breakers, so that wires passing from the circuit breakers are aligned with the CTs, reducing bending stresses on the CTs in contrast to prior efforts. Changes in polarity caused by the inversion can be adjusted by software, firmware, hardware or a combination thereof.

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Delaware, OH, United States of America

Gregg J Nelson