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Teridian 71M65XX using DC-tolerant CTs

Posted: 06 Jun 2011 ?? ?Print Version ?Bookmark and Share

Keywords:DC-tolerant? current transformers?

DC-tolerant current transformers (CTs) are gaining importance in the metering marketplace. As compared to general-purpose CTs, DC-tolerant CTs have a much larger phase angle and can also be less linear than general-purpose CTs at low cur-rents. J&D Electronics Co Ltd in Korea,has introduced a series of DC-tolerant CTs that can be used in electricity meters when combined with the compensation features of the Teridian family of metering ICs. Regardless whether the 71M6511, 71M6513, 71M6521, 71M6523, 71M6531/32, 71M6533/34, or the latest 71M6541/42 or 71M6543 is used, linearization of the CT output over current and over temperature can be implemented in a straight forward manner.

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