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G2.com, formerly G2 Crowd, is a peer-to-peer review site headquartered in Chicago, Illinois. It was known as G2 Labs, Inc. until 2013. It was known as G2 Labs, Inc. until 2013. The company was launched in May 2012 by former BigMachines employees, with a focus on aggregating user reviews for business software.
In an electrical grid, the short circuit ratio (or SCR) is the ratio of: the short circuit apparent power (SCMVA) in the case of a line-line-line-ground (3LG) fault at the location in the grid where some generator is connected, to: the power rating of the generator itself (GMW).
The service factor is typically in the 1.15-1.4 range, with the figure being lower for higher-power motors. For every hour of operation at the service-factor-adjusted power rating, a motor loses two to three hours of life at nominal power, i.e. its service life is reduced to less than half for continued operation at this level.
80+ Titanium Certification Example for Compuware model CDR-2227-2M2 PSU Plug Load Solutions tests PSUs according to their testing protocol [ 8 ] and lists certified PSUs, allowing consumers to verify how many and which models are listed by each company.
The IBM 9020 was an IBM System/360 computer adapted into a multiprocessor system for use by the U.S. FAA for Air Traffic Control. [1] Systems were installed in the FAA's 20 en route Air Route Traffic Control Centers (ARTCCs), beginning in the late 1960s. [2]: 6 The U.K. CAA also installed a system in its London centre. [3]
ISOs and RTOs of North America as of 2024. The Electric Reliability Council of Texas, Inc. (ERCOT) is an American organization that operates Texas's electrical grid, the Texas Interconnection, [3] [4] which supplies power to more than 25 million Texas customers and represents 90 percent of the state's electric load. [5]
Any IEEE 1901 products can coexist and be fully interoperable between products using the same technology. On the other hand, medium-frequency home control devices remain divided, although X10 tends to be dominant. For power grid use, IEEE has approved a low-frequency (≤ 500 kHz) standard called IEEE 1901.2 in 2013. [25]
The grid tie inverter (GTI) must match the phase of the grid and maintain the output voltage slightly higher than the grid voltage at any instant. A high-quality modern grid-tie inverter has a fixed unity power factor, which means its output voltage and current are perfectly lined up, and its phase angle is within 1° of the AC power grid. The ...