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Operation & Maintenance of Electrical Equipment - Coggle Diagram
Operation & Maintenance of Electrical Equipment
Unit 1
Earthing arrangements,Safe working on electrical equipment,Building Electrical Installations
Earthing Arrangements
Points to be earthed
Earth resistance measurement
Safe working on electrical Equipment s
Procedure for shutdown
Testing devices for electricity
Authorized person for Shutdown
Building Electrical Installations
Insulation measurement Procedure
Different types of fire Extinguishers
Unit 2
Operation of
transformer
Drying Out of transformer
Precaution for parallel operation of transformer
Inrush current & Remedy
Maintenance of transformer
Action to be taken if
the transformer oil temperature rises
How to maintain
the oil level in the transformer
Attention required for bushing & Insulator
Unit 3
operation & Maintenance of Generators,Sub-stations and circuit breaker
Generators
Operation
Parallel Operation
Protective &
Indicative equipment s
Cyclic speed irregularity
Maintenance
Causes for overheating
Armature field winding
Causes for pitting of
alternator bearing
Reverse current Protection & its necessity
Substations & Circuit Breaker
Operation
Rupturing capacity of circuit breaker
Auto Re close circuit Breaker
Difference between Isolator & Circuit breaker
Maintenance
Maintenance of oil circuit breakers & SF6 Circuit breakers
Attention required for the contacts of contactors
Unit 4
Operation & Maintenance of AC motors & Starters
Motors
Operation
Role of
single Phase Preventer
Types of enclosures
Insulation Classification
Indicating & Protective devices for motors
Maintenance
Air gap Measurement
Bearing problems
Balancing of motor
Rectification of
low insulation problem
Starters
Selection of starters
for low /high torque applications
Unit 5 Operation & Maintenance of Lighting ,transmission & Distribution
Lighting
Glare reduction
Trouble shooting
in Fluorescent lamp
Street light control methods
Causes for lowering of illumination level
Lighting Installations
Transmission & Distribution
Safety devices used
for overhead lines
Precautions in erecting UG cables & Over head transmission lines
Cable fault locations
Fall of potential method
Murray loop test method
Prevent Rusting in steel Post