DC Resistive High-voltage Dividers
The Laboratory offers calibrations for DC resistive high-voltage dividers rated above 1 kV and with voltage ratios in the range of 103 : 1 to 105 : 1.
Measurements of voltage ratios are generally made at rated voltage of the divider but the maximum test voltage will be limited to 100 kV.
Measurement uncertainties will depend on the values of the voltage ratios being determined, the magnitude of the applied voltage and stability of the dividers under test. Typical measurement uncertainty is 60 ppm for dividers of high quality.
Customers may be required to provide appropriate interfacing devices such as adaptors if their equipment cannot be connected directly to the Laboratory test system.
Calibration charges
| Fee in HK$ | |
|---|---|
| Measurement of the first voltage ratio at one applied voltage and one specified polarity. | $2850 |
| Measurement of each additional voltage ratio on the same divider with the same applied voltage as in 1. | $970 |
| Measurement of each voltage ratio at an additional test voltage and at one polarity. | $1070 |
| Each repeated measurement with opposite polarity. | $970 |
