VLF test generator
AssigneeMohaupt High Voltage GmbH
InventorPeter Mohaupt
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Abstract
Disclosed is a very low frequency test generator for generating a high voltage having a low frequency in order to test the insulation of capacitive loads, in particular power cables. Said VLF test generator comprises two oscillators, the frequencies of which differ from one another by twice said low frequency, a resonance circuit which is fed in an interfering manner by the oscillators, is adjusted to the oscillator frequencies and causes a voltage rise of the interfering oscillator frequencies, and a demodulator for disconnecting the low-frequency high voltage generated by the interference from the resonance circuit and applying the same to the load.
Claims23
VLF test generator for generating a high voltage with a low frequency to test the insulation of capacitive loads comprising two oscillators, the oscillator frequencies of which differ from one another by twice said low frequency, a resonant circuit which is fed in an interfering manner by the oscillators and is tuned to the oscillator frequencies for voltage superelevation of the interfering oscillator frequencies, and a demodulator for decoupling the low-frequency high voltage generated by the interference from the resonant circuit and applying same to the load.
Dependencies are inferred from the claim text.