Dielectric tests
o AC voltage	up to 1800 kV
o Lightning impulse voltage	up to 4000 kV
o Switching impulse voltage	up to 2400 kV
o DC voltage	up to 1000 kV
o Partial discharge	different methods of testing
o Measurement of VFT (very fast transients) for equipment with a rated voltage up to 800 kV
o Radio interference voltage (RIV)