| 摘要 |
FIELD: electrical engineering. ^ SUBSTANCE: proposed device has three common-output voltage channels and three current channels. It is also provided with electrically isolated current sensors, switching surge protective circuits, electrically isolated current sensors in three current channels, analog-to-digital converter, computing unit that functions to measure dc current through star-connected grounded-neutral three-phase power transformer windings, nonvolatile memory designed to save measurement data and to transfer them to personal computer whenever necessary including organization of database and archive, liquid-crystal display, and personal computer interface port. Device is also provided with two four-conductor cables designed to connect its components to piece of equipment under measurement. ^ EFFECT: enhanced measurement accuracy and provision for saving measurement data in computer volatile memory. ^ 3 cl, 2 dwg, 1 tbl |
