NIST DEVELOPS MEASUREMENT TECHNIQUES TO VALIDATE PERFORMANCE OF HIGH-PRECISION OPTICAL CURRENT TRANSFORMER (OCT).The use of OCTs by the electric power industry is growing as deregulation Deregulation The reduction or elimination of government power in a particular industry, usually enacted to create more competition within the industry. Notes: Traditional areas that have been deregulated are the telephone and airline industries. requires the industry to install increasing numbers of bulk metering equipment. OCTs are advantageous because of their lower price and significantly reduced insulation requirements in high voltage The term high voltage characterizes electrical circuits, in which the voltage used is the cause of particular safety concerns and insulation requirements. High voltage is used in electrical power distribution, in cathode ray tubes, to generate X-rays and particle beams, to applications. Companies have begun production of OCTs that may possess metering quality uncertainties and stabilities. However, the performance of these devices needed to be documented in order for further development of this promising technology to occur. In response to this need, NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. agreed to test a prototype OCT OCT ornithine carbamoyltransferase; oxytocin challenge test. OCT ornithine carbamoyl transferase, a liver specific enzyme. OCT Oxytocin stress test, see there device manufactured by a private company. To perform the test, NIST personnel developed new digital calibration techniques to establish OCT uncertainties, linearity, and stability. These new measurement techniques complement the precision analog techniques used at NIST for conventional current transformer A current transformer (CT) is a type of instrument transformer designed to provide a current in its secondary winding proportional to the current flowing in its primary. calibrations. The collaboration provided important performance information critical to its development plan and allowed NIST the opportunity to develop the testing procedures that will be required by the electric power industry in the future. |
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