CSVTU VI Sem Testing and Commissioning Of Electrical Equipment Syllabus
CHHATISGARH SWAMI VIVEKANAND TECHNICAL UNIVERSITY, BHILAI (C.G.)
Semester: 6th Branch: EEE
Subject: Testing An d Commissioning Of Electrical Equipment
Total Theory Periods: 40
Total Marks in E nd Semester Exam: 80
Minimum number of Class tests to be conducted: 2
UNIT I: Power Transformers
UNIT II: Instrument transformers/Traction, Rectifier Transformer
UNIT III: Rotating machines
UNIT – IV:
UNIT – V: Safety Precautions and live line Maintenance
TEXT BOOKS: –
Insulation resistance measurement and Meggering electrical equipment, temperature effect, polarization index, causes of poor insulation resistance, Drying out of transformer, Checks before paralleling, parallel operation Commissioning checks, Maintenance of transformer, maintenance of bushing and tap changers, Functions of breather, conservator, Troubles, Causes of failures, Ratings, Significance of impedance voltage, voltage regulation & vector diagram Ordering, Inspection, Storage, Handling, Transportation, civil works, site facilities, Commissioning, tests, Loading, capitalization of losses, Transformers oil: types, composition, properties, maintenance, testing, filtration, insulation resistance.
Current transformers (CT): applications, accuracy class, magnetization curve, burden, effect of open secondary, terms and definitions, type tests, routine tests on CTs, precautions, typical ratings, Voltage transformer (VT, PT): application, specifications, ratings, connections, accuracy class, and burdens, Types of VT construction
Traction transformers: Types, Special considerations, design and constructional features, Traction transformers for thyristor-controlled locomotives, Rectifier transformers: comparison between rectifier transformer and power transformer, utility factor, design feature of rectifier transformer, transductors. Troubles with D.C. Machines and Remedies
Troubles with Commutator, Brushes and Brushes- gear Sparking, Commutator Defects, Brush pressure,
Adjustments, Brush Alignment, Brush Angle, Neutral Position, Maintenance of Commutator and Brushes,
Troubles with D.C. Motors, Test to detect the causes of the troubles, Earth-fault Test, Important Checks
Testing of Induction Motors: Type Tests, Routine Tests, Commissioning Tests, Degree of Protection, Noise
and its Control, Frame Sizes, Ratings, , Explosion Proof Motor.
Installation and Commissioning of Induction Machines and Rotating Machines: Despatch from Factory to
Final Commissioning at site, Foundation and civil Work, Installation of Fully Assembled Machines,
Preparations, Procedure Dismantling, Installation of Large Rotating Machines, Bed plate, Checks.
Drying-Out of Electrical Rotating Machines and Insulation Resistance Measurements
Steps in drying-Out, Applying Heat, Measurements, Permissible Temp-rise, Log-sheets, Insulation
Resistance, Power Required, Period of Drying Out, Polarisation Index, Significance, Vibration & Its Effects,
Rotor Balancing, and Maintenance of motors.
Degree of protection Cooling Systems, Enclosures for Industrial Rotating Machines: Definition of Degree of
Protection and cooling Systems, standard IP codes, Cooling Systems, Definition, Types, Standard
Designations, IC Code, Ratings of Industrial Rotating Machines: Thermal Rating, Operation Duties, Duty
factor, Continuous Rating, Intermittent Duty, Short Time Duty STR, DTR, MCR.
Shocks, Safety procedures, Permission to work, Safety Clearances, Procedures, Permit to work, Electric
Field and Clearances, Live Line Maintenance, Hot-Line Maintenance, Safety, tools, Degree of Exposures,
Biological effects of Electric Field, Electric shock and effects.
1. Testing Commissiong Operation & Maintenance of Electrical Equipment – S.Rao
2. Transformers – Tata McGraw-Hill Publishing Company Limited