MOBILE PORTABLE THREE-PHASE TIMER-ELECTRICITY METER WITH CURRENT MEASUREMENT IN THE NEUTRAL CONDUCTOR Russian patent published in 2023 - IPC G01R19/00 

FIELD: electronic engineering and instrumentation.

SUBSTANCE: invention is aimed to increase the functionality and expand the scope of application due to the ability to measure current in the neutral wire and provide the ability to measure the frequency of the electrical network. For this purpose, a mobile portable three-phase timer-electric meter with current measurement in the neutral conductor for measuring the parameters of operating modes of the electrical network, containing a microcontroller, display and alarm units, a real-time clock and data recording, three removable current sensors installed on the phase conductors and a voltage sensor, characterized in that it is equipped with an additional removable current sensor installed on the neutral conductor of the electrical network under study, two voltage sensors, each connected to the neutral conductor and the phase conductor of different phases, and a built-in module for measuring the frequency of the electrical network, the outputs of which are connected to the inputs of the microcontroller, blocks indications and alarms and data recording are connected by inputs to microcontroller outputs.

EFFECT: increased functionality and expanded scope of application due to the ability to measure current in the neutral wire, as well as the ability to measure the frequency of the electrical network.

1 cl, 1 dwg