CALCULATION REGULATION FOR THE STRUCTURE OF A STRUCTURE FOR THE ADAPTATION OF ELECTRONIC SUSTAINABLE AUTHORITIES

摘要

PCT No. PCT/DE97/02216 Sec. 371 Date Jun. 24, 1999 Sec. 102(e) Date Jun. 24, 1999 PCT Filed Sep. 24, 1997 PCT Pub. No. WO98/13921 PCT Pub. Date Apr. 2, 1998A circuit arrangement for detecting the current of a current conductor in order to activate electronically controllable tripping devices, having a line voltage supply unit, with the operating voltage generated by the line voltage supply unit being compared to a reference voltage and the tripping device being activated by a limit voltage that forms when an overcurrent occurs. The a.c. voltage transmitted via secondary phase windings is rectified and supplied to a microprocessor device in the form of an operating voltage by the phases that are not in the measuring state. The processor-controlled phase measurement is performed without load, producing a precise measurement result.