EMC evaluation and analysis of electronic energy meter

Due to the ever increasing use of electronic gadgets in every walk of life, electromagnetic pollution is increasing day by day. This pollution may degrade the performance of electronic and electrical equipment. Conventional energy meters with moveable discs were previously used to register energy. But due to certain advantages of electronic techniques, these meters are being replaced by electronic meters. Electronic energy meters are very much vulnerable to EM noises and this might affect their performance and reliability. EMI/EMC evaluation has thus become necessary to ensure that these meters work satisfactorily in the present day environment. The paper discusses various available specifications for the EMC evaluation of energy meters and analyses the working environment of electronic energy meters. It also throws light on the probable EMI sources, their suppression and immunity improvement techniques for compliance of these meters to the national and international norms.