Pulse generator circuit arrangement and method for generating pulse signals for insulation fault location in IT networks

摘要

The invention relates to a pulse generator circuit arrangement and a method for generating pulse signals for the insulation fault location in IT networks, with a rectifier circuit for converting the IT grid voltage in a DC link, switching elements with a trigger signal input for switching on and off a DC link voltage and with a downstream of the switching elements circuit means for generating a pulse current to be fed into the IT network. The circuit arrangement according to the invention has a control and evaluation logic for determining the insulation resistance of the IT network and a circuit device for generating the pulse current, which is designed as a current control device and allows dynamic adjustment of the pulse current as a function of the determined insulation resistance.