category: cable fault, test and diagnostics
the portable, high-performance and energy-efficient vlf test systems are used for testing cables with 0.1 hz cosine-rectangular voltage according to iec/ieee/cenelec standards. in accordance with guidelines, the dielectric strength of cables and joints must be checked after installation or repair.
the vlf test systems from sebakmt have high test-capacities and are still compact, because of the patented voltage wave-shape and the power-recycling during polarity reversal. aside from cable and sheath testing, the test systems can also be used for the precise pinpointing of sheath faults (in combination with a step-voltage probe).
in total three portable systems are available, each with different voltage levels (28, 40 and 60 kvrms):
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