The scheme of inclusion of electric power meters in three-phase network with neutral conductor

摘要

The invention relates to electrical engineering, namely to the power measurement in the three-phase AC networks. Driving electric energy meter incorporating a three-phase network with a neutral conductor comprising a three-element active energy meter, current measuring elements which are included in the secondary circuit of current transformers and voltage measuring elements incorporated directly with the operating voltage network. The measuring circuit elements an electrical energy meter includes a voltage current limiting resistance. A utility model allows you to limit the fault current to a safe value for the staff. 1. n-ly f.; 1 Fig.