Drive Isolation Transformers--Solutions to Power Quality

Introduction The increased use of ac and dc motor drives in industrial plants has elevated the power quality application considerations associated with power distribution systems. These considerations have sparked great controversy about the use of drives in industrial applications and have raised questions about their effects on an electrical system. Valuable guide standards, such as IEEE 519-1992, have been created to help consulting and facility engineers evaluate harmonic current and voltage distortion in their facilities. Some problems can only be solved by re-routing major electrical systems or use of harmonic filter equipment. Improper grounding techniques or improper maintenance of equipment and connections cause additional electrical system problems. The aim of this product data bulletin is to provide information and guidelines on the use of drive isolation transformers for solutions to power quality.