Antifraud device in electronic electricity meters.

摘要

The antifraud device in electronic electricity meters subject of the invention, the purpose of which is to detect a possible deception due to manipulations in the meter connections to the electricity mains, advantageously resolves the most widespread kind of fraud, viz. disconnection of the potential coil (5) of the meter (1). To this end, the device basically comprises a Hall sensor (4) associated to the measurement coil(s) and connected to the rotation sensor (6) of the induction disc (7) in the meter (1), the necessary means being further provided for the supply of the data fed by the Hall sensor (4) as to the status of the potential coil (5). <IMAGE>