When your Revenue/Billing Meter is the
cash register for your electric utility or power producer, why would you trust the accuracy to any other meter than the JEMStar II from AMETEK Power Instruments?
Revenue meters are used for billing, therefore there is a financial impact to the Accuracy of the meter. Class 0.2 meters are the best option for the most demanding applications instead of class 0.5 meters, which cost less. Not all Class 0.2 meters are the same as some meters exceed the accuracy requirements of class 0.2, like the JEMStar II High Accuracy Revenue Meter.
A common argument used by manufactures of less accurate meters is the instrument transformers we connect to have inaccuracies much higher than the meter. While that is true, the inaccuracy of the revenue meter is added to that amount. For example, a transformer rated for 0.2% and a meter rated for 0.2% provide a combined inaccuracy of 0.4%. This could be improved by changing the CT to a higher accuracy but that can get costly. A better alternative is to improve the accuracy of your meter.
The JEMStar II meter has an unprecedented accuracy of 0.05% Reading for Watt-hours and we guarantee it for 10 years as it doesn’t drift providing high repeatability. The typical accuracy is 0.01% Reading and most revenue meters specify a 0.2% accuracy which meets the ANSI or IEC Standard. When compared to other meters, the JEMStar II provides more than $13K per year in unaccounted revenue per meter.
If you’re ready to capture your lost revenue by switching your meters to JEMStar II High Accuracy Revenue Meters, contact us today.