TIMER - MOBILE PORTABLE THREE-PHASE ELECTRIC METER WITH DATA TRANSMISSION RADIO CHANNEL Russian patent published in 2020 - IPC G01R11/42 G01R11/46 

FIELD: measurement.

SUBSTANCE: invention relates to electronic measuring equipment, in particular, to control of operating modes of equipment and is intended for mobile measurement of operating time of electric receiver (or section of network) and evaluation of consumed amount of electric energy without violation of insulation of supply wire. Timer - electricity meter mobile portable three-phase with data transmission radio channel is equipped with three detachable current sensors with current-to-voltage converter, radio modules, data recording unit to external accumulator, real-time clock unit and voltage sensor. Current sensors with converter consist of magnetic conductors with a gap, compensating windings, six resistors, three shunting resistors and three capacitors. Outputs of current sensors are connected through interface circuits directly to inputs of the first microcontroller. One outputs of compensating windings are directly connected to inputs of the first microcontroller, and second outputs to inputs of resistors. Outputs of the first, second and third resistors are connected to grounding, and output of the fourth, fifth and sixth resistors are connected to the second input of the microcontroller. Capacitors are connected to the input and output of the first, second and third resistors. Outputs of shunting resistors are connected to outputs of compensating windings. Outputs of the second radio module, data recording unit to external storage unit, real-time clock unit are connected directly to inputs of the second microcontroller. Outputs of the first radio module are connected directly to inputs of the first microcontroller. Inputs of the voltage sensor are connected to two inputs of the device, and outputs - to inputs of the first microcontroller.

EFFECT: broader functional capabilities of measuring time and energy characteristics of operating modes of electrical equipment or section of a three-phase circuit without disturbing insulation of the supply wire with recording of obtained values on an external storage.

1 cl, 2 dwg