A SINGLE PHASE ELECTRICITY METER FOR DETECTING TAMPERING AND MEASURING THE AMOUNT OF TAMPERING ELECTRICAL ENERGY CONSUMED

摘要

The present invention relates to electricity meters in particular, to meters operable to continue to perform a measurement upon occurrence of certain fraudulent acts. One form of fraud occurs by reason of the manipulations of electrical input and output connections of the meter with respect to the electricity mains. In a typical wiring application, the neutral voltage connection is at approximately the same voltage potential as the earth connection. In a typical fraud application, the neutral current returning from the load would be connected directly into earth, thus maintaining the voltage across the load. If the consumer removes the neutral connection from the electricity meter, then they often leave connected the live supply and the current flowing from the supplier to the consumer will still pass through the electricity meter. An object of the present invention is to provide an improved meter, operable to determine fraud where there has been a manipulation of the terminals of a meter and to provide an indication of the electricity used by the use of a default value for voltage.