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CMCs General Physics (3)
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Impedance up to the MHz range
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AC voltage, current, and power (3)
AC voltage ratio: real component (3)
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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
AC voltage ratio: real component. Inductive voltage divider, 0 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 5.8E-08 to 2.1E-07
Comparison with reference divider
Frequency: 40 Hz to 5 kHz
Maximum RMS voltage: 4 V to 30 V
Approved on 06 August 2013
Internal NMI service identifier: 190
Uncertainty table
 
AC voltage ratio: real component. Inductive voltage divider, 0 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 2.1E-07 to 1.5E-05
Comparison with reference divider
Frequency: 5 kHz to 120 kHz
Maximum RMS voltage: 30 V
Approved on 07 February 2019
Internal NMI service identifier: 202
Uncertainty table
 
AC voltage ratio: real component. Voltage transformer, 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 50E-06
IVD and mutual inductance bridge
Frequency: 50 Hz
Maximum error: 0.002
Approved on 06 August 2013
Internal NMI service identifier: 212