# Mine Electrical Technology

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# Code(Credit) : CUTM 1911(2-1-0)

## Course Objectives

• To give students functional knowledge about electrical equipments, machines used in mining sector.

## Learning Outcomes

1. Students will have thorough knowledge about electrcal technology in mining sector.
2. Students will know the construction, oeration & maintenance of electrical devices, machines, etc.

## Course Syllabus:

Module I: Concepts of circuit elements:                                 (6 Hours)

Basics of Electrical Safety, AC Source, DC Source, Electrical Parameters, Active and passive elements; resistance, inductance, capacitance; mutual inductance and coupling.Single Phase Supply, Three Phase Supply, Network theorems (KCL, KVL). Mesh and nodal analysis of DC circuits.

Practice: Single & Three Phase Wiring.

Practice: Network Analysis to Determine Voltage, Current & Power.

Module II: DC Machines       (10 Hours)

Construction and types, e.m.f and torque equation. DC generator – operation, e.m.f. equation, OCC, losses and efficiency, applications.
DC motor: operation, torque equation, starting, losses and efficiency, applications.

Practice: Speed Control of DC Motor

Practice: OCC of DC Motor.

Module III: AC Circuits                                   (7 Hours)

Single-phase AC circuits and concept of phasor diagram, series and parallel
circuit. Three-phase AC circuits with balanced and unbalance loads.

Practice: series and parallel circuit

Practice: Measurement of three-phase power by two-wattmeter method.

Module IV: Electrical Transformer                  (5 Hours)

construction, types, e.m.f equation, equivalent circuit diagram, losses, efficiency, operation, applications.

Practice: Identification of Part of Transformer.

Practice: IR Test of Transformer.

Module V: Single Phase Induction Machines (5 Hours)

Single-phase induction motor: construction, types, operation, torque equation, torque-slip characteristics, starting methods, applications.

Practice: Speed-Torque Characteristics of IM

Module VI:  Three Phase Induction Machines                      (5 Hours)

Three-phase induction motor: construction, types, operation, torque equation, torque-slip characteristics, starting methods, applications.

Module VII: Electrical Substation                                                                                        (8 Hours)

Introduction, electrical fault,  Circuit Breaker, Classification of Circuit Breakers, Isolator, relay, earthing system, fuse, conductror, cables.

Practice: Measurement of Earth Resistance.

## Session 1

Basics of Electrical Safety, Electrical Sources & Parameter, Active and passive elements; resistance, inductance, capacitance

## Session 2

mutual inductance and coupling.

Practice: Single & Three Phase Wiring

## Session 3

Network theorems (KCL, KVL)

Practice: Network Analysis to Determine Voltage, Current & Power.

## Session 4

Network theorems: Mesh and nodal analysis of DC circuits.

## Session 5

DC Machines:

Construction and types, e.m.f and torque equation

Practice: Speed Control of DC Motor

## Session 6

DC Machines:

DC generator – operation, e.m.f. equation, OCC, losses and efficiency, applications.

Practice: OCC of DC Motor.

## Session 7

DC Machines:

DC motor: operation, torque equation, starting, losses and efficiency, applications.

## Session 8

Single-phase AC circuits and concept of phasor diagram, series and parallel
circuit.

## Session 9

Three-phase AC circuits with balanced and unbalance loads.
Practice: Measurement of three-phase power by two-wattmeter method.

## Session 10

Electrical Transformer:

losses, efficiency, operation, applications.

## Session 11

Electrical Transformer:

losses, efficiency, operation, applications.

## Session 12

Practice: Identification of Part of Transformer.

## Session 13

Practice: IR Test of Transformer.

## Session 14

Single Phase IM Parts, Induction Machine Operations

Practice: Speed-Torque Characteristics of IM

## Session 15

Induction Machines  :

Three-phase induction motor: construction, types, operation

## Session 16

Induction Machines  :

torque equation, torque-slip characteristics, starting methods, applications.

## Session 17

Electrical Substation  :

Introduction, electrical fault,  Circuit Breaker, Classification of Circuit Breakers

## Session 18

Electrical Substation  :

Isolator, relay, earthing system, fuse, conductror, cables.

## Session 19

Electrical Substation  :

Application: Circuit Breaker Operation

## Session 20

Electrical Substation  :

measurement of earth resistance

## Session 21

Electrical Substation  :

Isolator, relay, earthing system, fuse, conductror, cables.

## Session 22

Electrical Substation  :

Application: Circuit Breaker Operation

## Session 23

Electrical Grid System

## Session 24

Bus bar configuration

## Session 25

Motor-Generator Set

## Session 26

Earth Switch, Isolator & CB Operation

DC supply System

## Session 28 Case Studies:

Causes of Transformer Failure

## Session 29 Case Studies:

Substation Earthing Measurement

## Session 30

Revision

### Swakantik Mishra

##### TEACHER
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Swakantik Mishra is serving as a faculty in Electrical & Electronics Department, He is having 10+ years of experences in Power/Energy Industry & Education sector. He holds a master’s & bachelor’s degree in electrical engineering, He is also a management graduate in Operations & HR area.