Watt-hour meter testing is an important process through which the accuracy of the electricity meter is verified. This test is essential for the reliability of the electricity supply system and the accuracy of customer billing. Watt-hour meters usually measure electricity consumption in kilowatt-hours (kWh), and if this meter is faulty, it can cause losses to both the customer and the electricity company. During meter testing, the readings of the original meter are compared using a calibrated reference meter.
This testing can be done in a laboratory or on-site, and it involves checking the values of voltage, current, and power factor at various stages. Nowadays, advanced technology and software are used to test digital and smart meters. Properly tested meters ensure transparency, reliability, and efficiency in the electricity system. Regular testing plays an important role in maintaining the quality of the electricity distribution company and achieving customer satisfaction.