Group decoupler for multichannel data-acquisition systems

Abstract

If the decoupling device has an expanded topology and uses group transformation, one can eliminate the individual isolating transformers from the channel (for example, some 15,000 transformers with a total of about 3.5 million turns would be required for i0,000 points), and in the same way one eliminates the switch-control generators, which greatly reduces the volume of equipment and improves the technological and metrological characteristics.