Quick and reliable testing after installing or repairing cable systems has an increasing importance.
Reconnecting the voltage without testing is a risk and is in accordance with most standards and internal regulations not permitted.
A typically applied method is a five- or ten-minute DC test in the operating voltage range. Either simple DC testers or insulation testers are used; however, with maximum voltages of 10 kV, they seldom come close to the operating voltage range.
It is a well-known fact that – particularly for XLPE cables – testing with DC voltage is useless, and if the cables are old, it can even cause additional aging or damage due to polarisation effects.
Looking at this current practice, it soon becomes clear that DC voltage tests can only reveal the most serious problems. Hidden problems cannot be detected in this way, and therefore lead to breakdowns during operation following the test.
SebaKMT solved this problem and developed a very small, lightweight testing device which offers the advantage of alternating voltage. With an output voltage of 20 kV and 0.1 Hz AC at 0.5 µF and up to 2.5 µF at 0.02 Hz, the Easytest provides sufficient power to test cables up to 2 km lengths at 0.1 Hz in the 20 kV range with a test voltage of 1,7 Uo.
A DC voltage module with leakage current measurement is available for testing of PVC and PILC. The testing options are completed by a sheath testing function and pulsed output voltage for sheath fault pinpointing.
- Easy to operate
- Configurable test sequences
- Compact, sturdy and lightweight
- No polarisation effects
- Full AC voltage testing