DEVICE FOR CHECKING CURRENT DISTRIBUTION IN ELECTRICAL-MACHINE BRUSH GEAR Russian patent published in 2000 - IPC

FIELD: electrical engineering; checking and adjusting brush gear of large electrical machines. SUBSTANCE: device has current-measuring head in the form of composite magnetic core with Hall-effect sensor, breaking gear, microcontroller built around processor unit, and two-line alphanumeric display; magnetic core is made of ring, maximum 30 mm in outer diameter and minimum 15 mm in inner one, split over radii of -60, -90, and 150 deg.; sector between -90 and 150 deg. radii functions as closer; Hall-effect sensor is placed in -60 deg, clearance; magnetic core is spaced at least 200 mm from push-button of breaking gear operating mechanism; novelty is introduction of nonvolatile memory integrated circuit and two-line alphanumeric display. EFFECT: provision for automating current distribution checkup. 2 dwg