The polyphase meters D8L and T8L, for direct metering of up to 200 A, have been designed by Elster, with a commitment to feature high and total quality, thus achieving a better performance and the customer’s satisfaction.

The modern single disc technology and the proper selection of materials together with a carefully controlled manufacturing process make the performance of these meters remain practically unchanged even under the most adverse operational and environmental conditions. These meters are little affected by variances in temperature, humidity, position, voltage, frequency, external magnetic fields, short circuits and load unbalance. Their accuracy is maintained throughout the entire operational range from 5% nominal current up to the high value of 800% overload.

The main features of D8L meters (two elements) and T8L meters (three elements) are the following:

• High registration accuracy: a factor of the highest importance especially for high consumption installations.
• Extended useful life: the magnetic repulsion bearing system provides maintenance free virtually unchanged accuracy over the years. Laboratory life tests, confirmed under field conditions, showed an even longer useful life for the bearing system than that of the meter itself (30 years and over).
• Low losses, especially in the potential circuits, represent substantial savings for the utility.
• Extreme versatility of operation: the meters for direct connection of up to 200 A eliminate the use of current transformers and testing switches block.