Automated DC voltage divider to calibrate voltages up to 1 kV

Sakamoto, Y.; Endo, Tadashi; Shao, Haiming; Matsuzawa, S.

doi:10.1109/cpem.2000.851026

Cited by 7 publications

(5 citation statements)

References 1 publication

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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]. An interesting technique to determine the voltage ratios in selfcalibrating dividers was developed at SPRING Singapore [12].…”

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%

“…(3) 4 The DMM impedance evaluation is not possible only when the DMM measures the voltage on the 90 kΩ resistor (100 kΩ to ground), as, in that case, all the divider resistance should be in parallel configuration with the calibrator output resistance ≅ 0.…”

Section: Evaluation Of the Dmm Input Impedance And Correction Of The ...mentioning

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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“…Anyway, the interest in realizing and using DC voltage dividers has been wider. Effective guarded dividers were developed for high accuracy DC voltage applications [4,5] and also for high voltages [6][7][8][9][10]. Since the calibration of manually operating dividers requires a lot of time, at the National Institute of Metrological Research (INRIM) an automated resistive DC voltage fixed-ratios divider has been developed.…”

Section: Introductionmentioning

confidence: 99%

“…This component was evaluated considering the input impedance of a specific DMM. The input impedance of the available DMMs model[4] were accurately measured and the item with the higher impedance (about 8.6×10 11 Ω) was enrolled in the measurement setup. For the 100:10 ratio, this component is negligible as the DMM always measures the voltage on R.…”

mentioning

confidence: 99%