JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Generation & measurement of high voltages and Electrical Machines

Course objectives:

• To analyze the basic principle of transformer and its specifications.
• To analyze the materials concept in transformers.
• Analyze the design approach with respect to core and windings in dry type distribution transformers.

Course Outcomes

After completion of this course, student will be able to

• Well known about transformer working and its selection process in real time.
• To design a transformer as per user specifications with respect of various windings.
• Clear information about dry type distribution transformer and it application in real time.

UNIT - I

Working Principle of a Transformer Brief idea about a transformer and how it operates in the distribution system. The working principle in respect of induced EMF, Transformer core and winding. End turns, Losses. Future requirement of transformers with the growth of the power scenario in India.

UNIT - II

Requirements of Transformer Specifications Form End – Users The basic information that buyers should pass on to the manufacturer while placing an order. Preparing specifications in respect of mandatory, Supplementary and additional requirements.

UNIT - III

Basic Materials of Transforms The processing of three basic new materials, viz., CRGO steel, winding wires and strips and transformer oil, raw material processors.

UNIT - IV

The Basic Concept of Design Design concepts, a commercial design, the design approach in respect of core and winding. The procedure of handling computer aided design, the design inputs and outputs, and operation. Two standard designs of 250 kVA and 400 kVA. 11/0.433 kV.

UNIT - V

Dry – Type Distribution Transformers Basic constructional details and superiority of resign impregnated dry type transformers have been compared with oil filled and resin cast transformers. VPI plant requirements, application of dry type transformers.

TEXT BOOK:

• 1. Design of Transformers, Indirajit Dasgupta, Tata McGraw Hill.

REFERENCE:

• 1. Transformers, BHEL, Tata McGraw Hill Publishers. M. Tech – I Year – II Sem. (PS H.V. Engg. / H.V. Engg.)