The test system is able to perform tests on GIL/GIS (Gas Insulated Line/Switchgear) once they have been installed. The test system operates in a frequency range from 20 Hz to 300 Hz and complies with the requirements according to IEC 60694, 62271-203, and 60060-3. The test can be combined with sensitive PD measurement.

Test system and test object form a series resonant circuit that guarantees a pure sinusoidal waveform of the test voltage due to physics. In cas of failure, only minimal damage may accur due to limited amount of energy stored in the test circuit.

Generally the test system can be set up on-site within a short period of time. There is no special “lifting” or “assembly”. A standard three-phase diesel generator can be used for the feeding of the test system The applications are:

1. AC withstand testing after installation

2. Withstand testing a maintenance work

3. Diagnostic PD measurement