Abstract: A method of testing a distribution center bus system having one or more of the following features: (a) opening a reserve bus breaker between a reserve bus UPS and a reserve bus, (b) initiating a self-test mode at the reserve bus UPS, (c) routing current through the reserve bus UPS, the reserve bus, a reserve bus static bypass circuit back to the reserve bus UPS, (d) testing the reserve bus to detect heat, determine any significant current loss, or identify other attributes suggesting failure, (e) identifying if a primary bus static transfer switch has tripped over to the reserve bus, and (f) terminating the self-test at the reserve bus UPS if the primary bus static transfer switch has tripped.

Abstract: A method of testing a distribution center bus system having one or more of the following features: (a) opening a reserve bus breaker between a reserve bus UPS and a reserve bus, (b) initiating a self-test mode at the reserve bus UPS, (c) routing current through the reserve bus UPS, the reserve bus, a reserve bus static bypass circuit back to the reserve bus UPS, (d) testing the reserve bus to detect heat, determine any significant current loss, or identify other attributes suggesting failure, (e) identifying if a primary bus static transfer switch has tripped over to the reserve bus, and (f) terminating the self-test at the reserve bus UPS if the primary bus static transfer switch has tripped.

Abstract: A power supply system includes a plurality of UPSs configured to provide output power to one or more loads using AC power drawn from a supply bus and energy stored at respective energy modules of the plurality of UPSs. Each UPS of the plurality of UPSs comprises a corresponding frequency sensor configured to generate an indication of a frequency of the AC power at the supply bus. The plurality of UPSs comprises a first UPS configured to draw the AC power from the supply bus when the indication of the frequency output by the corresponding frequency sensor for the first UPS satisfies a first frequency priority threshold and a second UPS configured to draw the AC power from the supply bus when the indication of the frequency output by the corresponding frequency sensor for the second UPS satisfies a second frequency priority threshold.

Abstract: A system apparatus and method for providing electrical power to multiple customer devices within a data center that includes a power supply skid frame having a top portion and a bottom portion, a power supply portion physically separate from the power supply skid frame and capable of being positioned on the top portion of the power supply skid frame to supply the electrical power, a power distribution skid frame, mechanically and electrically separate from the power supply skid frame, having a top portion and a bottom portion, and a power distribution portion physically separate from the power distribution skid frame and capable of being positioned on the top portion of the power distribution skid frame to distribute the electrical power. The system may include one or more skid frame spacer bars, physically separate from the power supply skid frame and the power distribution skid frame and capable of mechanically coupling the power supply skid frame and the power distribution skid frame.