Automated precision DC voltage fixed ratios divider

Galliana, Flavio; Capra, Pier Paolo; Cerri, R.; Lanzillotti, M.

doi:10.1016/j.measurement.2018.03.045

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…WITH RATIOS BETWEEN 10:1 and 10 7 :1 ratio divider [3] for the same task. Guarded dividers were realized for precision DC voltage calibrations [4,5] also at high voltages [6][7][8][9][10][11].…”

Section: Automatic DC Voltage Precision Resistive Dividermentioning

confidence: 99%

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Automatic DC voltage precision resistive divider with ratios between 10:1 and 107:1

2021

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Section: Automatic DC Voltage Precision Resistive Dividermentioning

confidence: 99%

“…VH is applied on the 9 Ω resistor to avoid over load on the calibrator, but LVH is measured on the 900 mΩ resistor 3. VH is applied on the 9 Ω resistor to avoid over load on the calibrator, but LVH is measured on the 90 mΩ resistor.…”

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confidence: 99%

Automatic DC voltage precision resistive divider with ratios between 10:1 and 107:1

2021

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“…Voltage dividers have played and still play a strategic role in metrology for low and high DC [5][6][7][8][9][10][11][12][13][14], AC [15][16][17][18] and impulse voltages [19][20][21] At INRIM, a test set-up involving a divider with a sinusoidal and a LI generators has been simulated with the LT-spice program. Simulations with single generators (LI and sinusoidal) and with composite voltages have been carried out.…”

Section: The Inrim Dividermentioning

confidence: 99%

Towards a traceable divider for composite voltage waveforms below 1 kV

2021

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In the framework of the European Project 19NRM07 HV-com2 supporting the standardization in high-voltage testing with composite and combined wave shapes, a divider to employ in a test set-up for validation of electrical devices submitted to composite voltages below 1 kV has been developed at the Istituto Nazionale di Ricerca Metrologica (INRIM) and currently is under extensive testing. After a simulation stage, an available divider has been modified to comply with the IEC 60,060 requirements in terms of step response and scale factor. To be suitably fast in replying to step voltages, an adjustment of the components of the low-voltage arm has been made. The divider has been calibrated with traceability to the relevant INRIM National Standards and characterized exploiting its scale factor at different voltages and frequencies. The divider has been then inserted in a set-up with a sinusoidal generator, an impulse generator and coupling–blocking elements to carry out tests at low voltages (below 1 kV) with single voltages. In these tests, the divider showed a satisfactory attitude as converting device and its scale factor is traceable with suitable uncertainty.

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“…To that aim, two high precision voltage dividers and a measurement setup for calibration of DC voltage sources were developed at INRIM taking advantage of the linearity calibration of DMMs [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

DMMs as voltage ratio standards: a 20 years report

Capra¹,

Francese²,

Galliana³

et al. 2022

Proceedings of the 25th IMEKO TC4 International Symposium and 23rd International Workshop on ADC and DAC Modelling and Testing

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At the National Institute of Metrological Research a convenient setup to verify the DMMs linearity has been developed. It consists in a top-class calibrated DC Voltage calibrator supplying directly the DMMs under test. Some Keysight 3458A, a Fluke 8508A and an 8588A DMMs are being enrolled in the tests. This setup is also compared with another setup with a Digital Analog Converter (R -2R DAC) in place of the calibrator. The DMMs linearity is being verified both when DMMs are just switched on and at thermal regime. The interference of the input stages of the DMMs connected in parallel during the linearity measurements and the linearity by inverting the plug of one of the DMMs connected in parallel are currently under verification.

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Automated precision DC voltage fixed ratios divider

Cited by 6 publications

References 12 publications

Automatic DC voltage precision resistive divider with ratios between 10:1 and 107:1

Automatic DC voltage precision resistive divider with ratios between 10:1 and 107:1

Towards a traceable divider for composite voltage waveforms below 1 kV

DMMs as voltage ratio standards: a 20 years report

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