Handbook of Power and Distribution Transformer Practices

Although many textbooks cover the topic of transformers as required of the curriculum, engineers after graduation generally learn about the practical applications of transformers either by trial and error or under the guidance of senior experienced engineers. The need for practical usage information is generally felt in power system utilities by professionals, budding consultants, electrical contractors, and to a larger extent by manufacturers too. This book fulfils the need of a handbook and provides a complete solution to the practical aspects of power transformers-construction, erection, and maintenance-to augment curriculum learning and make budding engineers ready for the field.

Key features:

•    Basic functions of transformers; information on core, windings, design, types of winding interconnections, connections in practice, tap operations, changing methods with on-load and off-load tap changers
•    Procedure and precautions to be observed in transportation, erection and commissioning of power transformers at site; pre-commissioning tests; checklist for commissioning power transformers
•    Maintenance aspects including that of external accessories; use of oil in transformers; various tests to be conducted; reclamation process using filters; oil handling systems; troubleshooting and remedial measures
•    Various protection schemes; the use of auto transformers in grid network; operation of transformers-loading, tap and parallel operation, emergency operation
•    Inferences from practical phenomenon: magnetic balance tests, observations made on voltages during Horn Gap fuse failures, sheared-delta connection; two-phasing phenomenon
•    Measures for enhancing performance by design
•    Case studies along with their analyses