Introduction

How is the required capacity (kVA rating) of a transformer determined for an industrial power distribution system? Explain the procedure for selecting an appropriate transformer size by considering factors such as total connected load, maximum demand, diversity factor, load factor, nature of industrial loads, and provision for future expansion. Illustrate your explanation with a suitable example showing the step-by-step calculation used to arrive at the final transformer rating.

Explain the method of electric load calculation in an industry.

Define and elaborate with suitable example, "Connected load", "Maximum demand", "Demand factor" and "Load factor".