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Power Transformer

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- Basics
- Types & Applications
- Terminologies & Formulas
- Components & Accessories
- Production Cycle
- Trfr OGA
- Routine-Types & Special Tests
- Standard Ratings

POWER TRANSFORMERS

An Overview

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POWER TRANSFORMERS
Manufacturing, Processing, Quality Checks & Tests During Manufacturing.

- Flow Chart For Manufacturing
- Core Spitting & Cropping Of Laminations
- Types Of Trfr Core
- Fabrication Of Clamping Structure (End frames,          Flitch plates, Tie rods etc.)

- Core Assembly (Types of Trfr Coils & their making)
- Composite coils,

- Core coil assembly,Tank Fabrication
- Processing including Vapour Phase System
- Oil impregnation & making transformers ready for      final tests
- Stage quality checks & tests.

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- Storage:- Outdoor & Indoor items
- Installation procedure & sequence for various          components.
- Pre Commissioning checks & Low Voltage site          tests
- Protection checks:-

   Periodic maintenance checks & Fire protection         measures for Power Transformer.

POWER TRANSFORMERS
Storage, Installation, Commissioning & Maintenance (Do's & Dont's)

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- Faults due to internal and external factors

- The remedial measures to be applied.

POWER TRANSFORMERS
General Faults, Reasons & Remedies.

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Routine, Type & Special tests:-

Performed on assembled transformers at work, procedures, circuits & criteria for passing the tests. 

POWER TRANSFORMERS
Final Test - Routine, Types & Special Tests 

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A) Detailed Course
B) Condensed Version

 

Topics Covered :-


- Concepts, Terminologies, Formulas
- Types of cores,coils
- Computation of percentage reactances
- Iron loss,Copper loss etc.
- Core & Copper weights
- Explaining Designs & Electrical specifications of    actual designs
- 11KV to 330KV Class Power Trfrs.

POWER TRANSFORMERS
Design Concepts 400 KV Class Transformers

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Typical problems observed during, testing at works/during operation at the site

And the remedial measures to be taken.

POWER TRANSFORMERS
Typical Case Studies

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- Dynamic forces-Short circuit test
- Preventive measures to make a trfr capable to      withstand short circuits.

POWER TRANSFORMERS
Short Circuits

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- Site conditions-Rating & application
- National standards
- Choice of flux density & current density
- Guaranteed loss/Capitalisation
- Manufacturing facilities requirement & stage            inspection.
- Vendors list & Final tests.

POWER TRANSFORMERS 
Preparation, Specifications for Procurement

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POWER TRANSFORMERS
Preventive Maintenance

- Do's & Dont's

- General Faults

- Remedial Measures.

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