Patent ID: 8768341

Claim:
A wireless current sensor designed for measuring an electrical current flowing in an electrical conductor, the wireless current sensor comprising: a current transformer including a core arranged around the electrical conductor forming a primary of the current transformer, and a winding around the core and forming a secondary of the current transformer in order to retrieve an electrical power when an electrical current flows in the electrical conductor, an electronic circuit connected to the secondary of the current transformer, the electronic circuit including: means for storing the generated electrical power, means for measuring, including a microcontroller, the electrical current flowing in the electrical conductor based on the generated electrical power stored in the means for storing the generated electrical power and generating measurement data of the electrical current flowing in the electrical conductor, and a wireless data transceiver coupled to the microcontroller to send the measurement data, wherein the wireless current sensor is operable in at least two distinct operating modes, the two operating modes differing from one another by the measurement data generated by the microcontroller and by a duration of measurement of the electrical current flowing in the electrical conductor, and wherein the wireless current sensor further comprises means for determining transition from one operating mode to the other taking account of a value of the measured electrical current.