CCE intercomparison of AC-DC transfer standards

Vreede, J.P.M. de

doi:10.1109/19.278530

Cited by 17 publications

(2 citation statements)

References 9 publications

(5 reference statements)

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“…However, the ac-dc difference of the multiplying resistors used in HVTCs may vary as a function of input voltage level, creating significant errors in the build-up process. Formal and informal international intercomparisons of HVTCs have revealed variations among the participant laboratories [2], [3]. Therefore, some National Measurement Institutes (NMIs) are developing calibration procedures that are independent of the build-up process [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

A new binary inductive divider comparator system for measuring high-voltage thermal converters

Kinard

Lipe

Avramov-Zamurovic

2002

IEEE Trans. Instrum. Meas.

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National Measurement Institutes have traditionally used bootstrapping or build-up techniques to determine the ac-dc difference of high-voltage thermal converters (HVTCs) in terms of the ac-dc difference of lower-voltage converters. We describe a method of determining the ac-dc difference of HVTCs that is independent of the build-up process. A description of the system and technique is given and preliminary data is presented.

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Section: Introductionmentioning

confidence: 99%

A new binary inductive divider comparator system for measuring high-voltage thermal converters

Kinard

Lipe

Avramov-Zamurovic

2002

IEEE Trans. Instrum. Meas.

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“…Voltage coefficientsbetween 500 V and 1000V can be several hundred parts-per-million (ppm) or more for some worst-case resistors. The latest international intercomparison of HVTC's at high voltage and high frequency reported differences among the participating laboratories of as much as 122 ppm in ac-dc difference at 1000 V and 50 kHz [1]. The present work was undertaken to study the various contributions to the ac-dc difference of HVTC's at different voltag~and frequency levels and to identify methods which might reduce the variation between the participating laboratories.…”

Section: Introductionmentioning

confidence: 99%

AC-DC difference characteristics of high-voltage thermal converters

Huang

Lipe

Kinard

et al. 1995

IEEE Trans. Instrum. Meas.

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New principle for exact DC/AC electrostatic comparators

Nefed’ev¹,

Kravchenko²

2000

Meas Tech

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A. I. Nefed'ev and S. A. Kravchenko UDC 531.714.75 A principle is expanded for designing electrostatic voltage comparators to operate at 100 to 1000 V with 0.005-0.001% accuracy in the frequency range from 20 Hz to 100 kHz. The sources of error in the electrostatic comparators are analyzed. According to the recommendations of MI 1935-88 [1], the unit volt of ac current can be reliably transferred in the frequency range 0-100 Hz by a thermoelectric voltage convener only by comparison with a standard comparative convener in the range of voltages up to I000 V and frequencies up to 100 kHz. The principle is the same in all countries. The errors of experimental measurement have also been confn'med by crucial comparisons, carried out repeatedly in accordance with CCE-92-04 [2]. It would seem that the problem has been solved. Considering that a voltage of 1000 V is also the reference point, as it were, for power measurements in the transition to higher voltage ranges and for electrical measurements at frequencies up to 100 kHz, it is very important to use another method, an electrostatic method in particular, to create comparison converters, which ensure reliable transfer of the unit volt of ac current to within 0.001%. The point is that in the frequency range 50-100 kHz neglected processes begin to occur in the auxiliary resistors of the thermoelect_dc conveners and the accuracy of measurement drops sub-stantiaUy [3]. Improving the accuracy of electrostatic voltage comparators (EVCs) by traditional methods is made difficult

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CCE intercomparison of AC-DC transfer standards

Cited by 17 publications

References 9 publications

A new binary inductive divider comparator system for measuring high-voltage thermal converters

A new binary inductive divider comparator system for measuring high-voltage thermal converters

AC-DC difference characteristics of high-voltage thermal converters

New principle for exact DC/AC electrostatic comparators

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