STRI is accredited for High-Voltage calibration according to IEC 60060-2, edition 2010-11. The accreditation is granted for the following:
- DC: 40 kV to 300 kV with a measurement uncertainty of 0.5 %.
- AC: 10 kV to 600 kV with a measurement uncertainty of 0.5 %.
- LI: 50 kV to 700 kV with a measurement uncertainty of 1.04 % for the peak value and 3.1 % for the time parameters.
- SI: 100 kV to 700 kV with a measurement uncertainty of 0.96 % for the peak value and 3.4 % for the time parameters.