NDLI: A 300-kV Compressed Gas Standard Capacitor with Negligible Voltage Dependence

Content Provider	IEEE Xplore Digital Library
Author	Hillhouse, David L. Peterson, A. E.
Copyright Year	1963
Description	A compressed gas capacitor now in use at the National Bureau of Standards (NBS) changes capacitance by less than 2 parts per million from 0-300 kV. This extremely small variation results primarily from rugged construction, and thus requires only reasonably careful centering of its three cylindrical electrodes. It has a hollow cantilevered high-voltage electrode suspended between an outer 100-pF low-voltage electrode and a segmented inner low-voltage electrode having values of 1, 2, 4, 8, and 10 pF, or any parallel combination thereof. The capacitor's small voltage dependence was inferred from the following independent measurements: 1) comparison with another high-voltage capacitor having a small experimentally determined coefficient; 2) comparison of the inner and outer sections with each other; and 3) measurement of capacitance change resulting from application of known forces on the cantilevered electrodes, and correlating this with calculated high-voltage electrostatic forces. The capacitor is used in determining the voltage coefficients of NBS-owned commercial standard capacitors; in the calibration of customers' standard capacitors, voltage transformers, and dividers to 200 kV and above; and in research on coupling capacitor voltage transformers and other high-voltage devices and materials.
Sponsorship	IEEE Instrumentation and Measurement Society Bureau international des poids et mesures IEEE International Bureau of Weights and Measures (BIPM) URSI NBS Agency Ind. Sci. & Technol., Min. Int. Trade & Ind. Sci. Council Japan International Union of Pure and Applied Physics (IUPAP) NIST NRCC National Conference of Standards Laboratories (NCSL) Allen Osborne Associates Andeen-Hagerling, Inc. Ballantine Lab. Inc. Clarke-Hess Communications Research Corp. Fluke Corporation Guildline Instruments Hewlett-Packard Co. Julie Res. Lab. Inc. Keithley Instruments, Inc. Measurements International Ltd. Canada QuadTech Inc. Quantum Design Inc. Rotek Instrum. Corp. Tegam Inc. Tektronix Inc
Starting Page	408
Ending Page	416
Page Count	9
File Size	3852917
File Format	PDF
ISSN	00189456
Volume Number	22
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1973-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitors Electrodes NIST Voltage transformers Capacitance measurement Electrostatic measurements Force measurement Calibration Instrument transformers Laboratories
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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