VLF testers

Performing a DC testing on cross-linked polyethylene (XLPE) cables results in residual capacitive charges (space charges) which may damage healthy insulation. Very-low frequency (VLF) testing provides a non-destructive alternative and thus is a preferable testing approach for polymer-insulated cables.

Our multifunctional VLF-60 system allows to perform VLF testing of high-capacitance XLPE-insulated cables, conduct DC- and DC+ withstand testing of various solid dielectrics, carry out initial burning of faulty cable insulation, test vacuum circuit breakers, and pinpoint cable sheath faults (with a suitable receiver).

VLF-60 can run tests in either fully automatic mode according to IEEE 400.2-2013 or in manual mode according to a wide range of standards, while the control is realised via a touch-sensitive colour display.

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