Patent ID: 9698609
Date: 2017-07-04
CPC Classifications: G01D,G01R,H02J

Claim:
1. A system, comprising: a testing device configured to measure a characteristic relating to electrical equipment and to transmit data representing the measured characteristic to a remote computing device, wherein the testing device comprises one or more batteries that are usable to power the testing device, and wherein electrical equipment includes an electrical conductor carrying an electric current; a current clamp forming a current transformer, wherein the current clamp is configured to be clamped around the electrical conductor, and wherein the current transformer is configured to induce an electric current from the electrical conductor; and circuitry configured to convert the induced electric current to a direct current that is usable to power the testing device, wherein the circuitry provides power to the testing device from one of the direct current and the one or more batteries based on a voltage of the direct current and a voltage of the one or more batteries.