Testing of Long AC and DC Cables with Resonant Test Circuits

Due to the increase in energy consumption, the demand for long and very long cables is constantly increasing too. The challenge lies in the production of such cables and, as a result, in the testing of these cable lengths. For the testing of subsea cables and long land cables after installation, conventional test systems have reached their technical limits. The developed test setup is capable of testing AC & DC cables up to four times the length of established test setups and simultaneously reducing the comparative masses and footprints of the whole test system. The shown test system is PD-free as required for cable testing and of modular design, to achieve an equivalent test power of >500 Mvar at 50 Hz by an optimized test arrangement.