Analyse the starting methods and applications of the three-phase induction motors and synchronous machines.

Learning Outcome 1: Assess the constructional features and applications of transformers

Learning Outcome 2: Analyse the starting methods and applications of the three-phase induction motors and synchronous machines

Learning Outcome 3: Investigate the types of generators available in the industry by assessing their practical application

Q1

Scenario:

You work for an electrical component supply company; you are to advise a customer seeking various transformers for a mountain hotel. They require distribution and control transformers.

i) Examine shell and core type transformer options with the customer. In your examination you are to include the design of the physical construction, winding configurations [step up, step down, and isolating], discuss the application for each type of transformer.

ii) Illustrate to the customer the various windings, connections (, how short circuit, and no-load testing is used to determine the losses and overall efficiency of the transformer. Show on an equivalent circuit the iron and copper losses.

iii) Listed in table 1 are specifications of the transformers that are in stock. Make an assessment on the efficiency of each to provide the customer with the best selections for a single-phase and a three-phase transformer.