Publications
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HCT and RAMTech Engineering have authored many engineering papers regarding test methods and sensors for high current measurements. These papers are available upon request. Call or email for a copy of any papers you would like to receive.

We will also be adding white papers on related subjects in the near future.  So check back often for availability of these new sources of information. 

 

High Current Technologies Inc. & Ramtech Engineering

 

Technical Papers Available (1/23/02)

"Precision EHV Current Probe and Comparator for Field CT/OCT Verification and Line Monitoring," A. Andersson, D. Destefan, J. Ramboz , and S. Weiss, invited paper to be presented at 3rd EPRI Optical Sensor Systems Workshop, Pittsburgh, PA, October 17-19, 2001.

"Unique EHV Current Probe for Calibration and Monitoring," A. Andersson, J. DeHaan, D. Destefan, J. Ramboz and S. Weiss, accepted for presentation and publication at the IEEE Transmission and Distribution Conf., Atlanta, GA, Oct, 28, 2001 – Nov. 2, 2001.

"Advancements in High Current Measurement and Calibration," D. Destefan and J. Ramboz, Presented at NCSL International 2000 Workshop and Symposium July 16-20, 2000, Toronto, Canada.

"Performance Assessment of Current Sensing Coils Built into Resistance Welding Transformers," Kendall Ymker1, D. E. Destefan, and J. D. Ramboz presented at the International Sheet Metal Welding Conf, Detroit MI October 19, 2000.

"Unrecognized Errors in the Calibration of Current Coils," Joint paper with General Motors, Delphi Chassis, and RAMTech Engineering, presented at the Sheet Metal Welding Conf., Detroit, MI, Oct. 14-16, 1998.

"Uncertainty Analysis for High-Current Measurements,", presented/published at Natl. Conf. of Stand. Lab. Workshop and Symposium, July 19-23, 1998, Albuquerque, NM.

"Establishment of Traceability for Pulsed-Current Measurements to Greater than 60 kA," presented/published at Natl. Conf. of Stand. Lab. Workshop and Symposium, July 19-23, 1998, Albuquerque, NM.

Committee Member - "Recommended Practices for Gas Tungsten Arc Welding," ANSI/AWS C5.5-98 Standard – to be published 1998.

"High-current Calibration Facility for Resistance Welding Current Monitors," IEEE Trans. Of Instrum. and Meas., Sept., 1996.

"Advances in Resistance Welding High-current Measurements," workshop conducted at the American Welding Society International Welding and Fabrication Convention, Cleveland, OH, April 3, 1995.

"Resistance Welding Current Calibration: An Update," workshop conducted at the American Welding Society International Welding and Fabrication Convention, Chicago, IL, April 22 1996.

"Basics to Know When Choosing a GTAW Power Source," Welding Journal, pp 67-72, Jan. 1995.

"Mathematical Modeling of Part Voltage and Weld Current in Resistance Welding," EG&G Publication, RFP-4218, Sept 11, 1990.

"RMS and Average Errors Resulting from Low Pass Filter Characteristics in Instrumentation Systems," presented at IEEE Instrum. and Meas. Conf., Washington, DC, April 26, 1989.

"1000 Amp AC/DC Current Source for the Calibration of Welding Systems," presented at IEEE Instrum. & Meas. Conf., Boulder, CO, Mar 22, 1986.

"A Solar Heating Systems Supplemented by Wind Energy," National Science Foundation (Grant #76-0773), Co-author, Dec 15, 1976.