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Topic Area: Energy

Displaying records 321 to 330 of 404 records.
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321. Testing of Interaction-driven Manufacturing Systems
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6260
Topic: Energy
Published: 12/2/1998
Authors: Katherine C Morris, David W Flater, Don E Libes, Albert W Jones
Abstract: As automation of manufacturing processes becomes more widespread, manufacturing systems are becoming more and more software dependent. At the same time, the software used is becoming more and more modularized allowing for the creation of customized s ...

322. Extremely Low Frequency Electric and Magnetic Field Measurement Methods
Topic: Energy
Published: 12/1/1998
Author: Martin Misakian
Abstract: During the early 1970's, reports originating in the Soviet Union described a variety of ill effects experienced by personnel working in 500 kV and 750 kV switchyards [1,2],. The effects were attributed to the presence of the ac electric fields as we ...

323. Exposure Systems
Topic: Energy
Published: 11/1/1998
Author: Martin Misakian

324. Gapped Arresters Revisited: A Solution to Cascade Coordination
Topic: Energy
Published: 10/1/1998
Authors: A. Mansoor, Francois D. Martzloff, K. O. Phipps
Abstract: This paper provides a brief perspective on how the coordination of cascaded surge-protective devices (SPDs) has become an issue. We propose an approach where the 'ancient' technology of gapped arresters may well be the answer to the dilemma of the i ...

325. The Dilemma of Surge Protection vs. Overvoltage Scenarios: Implications for Low-Voltage Surge-Protective Devices
Topic: Energy
Published: 10/1/1998
Authors: A. Mansoor, Francois D. Martzloff
Abstract: The application of surge-protective devices in low-voltage systems faces the dilemma of providing effective limiting against surges while not attempting to limit the temporary overvoltages that do occur in a power system. The paper illustrates this ...

326. What Are the Lights on Your Surge Protector Telling You
Topic: Energy
Published: 8/1/1998
Author: Francois D. Martzloff
Abstract: Surge-Protective devices (SPD) applied in low-voltage ac power circuits should be provided with appropriate means to disconnect a failed SPD from the power system and provide a clear indication of the SPD status. This objective has not been consisten ...

327. Calibration of Dissipation Factor Standards
Topic: Energy
Published: 7/1/1998
Authors: Eric D Simmon, Gerald J FitzPatrick, O. Petersons
Abstract: Dissipation factor (D) standards obtained by connecting a shielded three-terminal capacitor in series with a shielded resistor have been developed for calibration purposes. An analysis of these DF Standards, including precautions in their constructi ...

328. Extension of Voltage Range for Power and Energy Calibrations
Topic: Energy
Published: 7/1/1998
Authors: O. Petersons, Thomas L Nelson, Nile M. Oldham, Gerald J FitzPatrick
Abstract: A special purpose ac voltage divider system having voltage ratios of 600 V, 480 V, 360 V, and 240 V to 120 V has been developed to extend the voltage range of primary electric power calibrations from 120 volts to 600 volts at power frequencies of 50 ...

329. Power and Energy Measurements at NIST
Topic: Energy
Published: 7/1/1998
Author: Thomas L Nelson
Abstract: The NIST calibration service that provides electric energy traceability for the U.S. utility industry is described. Electronic watthour meters, submitted for test, are measured using the NIST Power Bridge, in which complex ac power is defined in ter ...

330. The Effect of Neutral Earthing Practices on Lightning Current Dispersion in a Low-Voltage Installation
Topic: Energy
Published: 7/1/1998
Authors: A. Mansoor, Francois D. Martzloff

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