VLF testers
Subjecting cross-linked polyethylene (XLPE) cables to DC testing leads to the formation of 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 approach to testing 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, as well as test and pinpoint cable sheath faults (with a suitable receiver).
VLF-60 can run tests in either a fully automatic mode according to IEEE 400.2-2013 or in a manual mode according to a wide range of standards, while the control is realised via a touch-sensitive colour display.
