ETT Study Guide Book 3: Component Testing
B. Transformers
1. Properties and Types
Identify properties, types, and applications 2, 3, 4
- Types and Construction of Power and Distribution Transformers
- Transformer Cooling Systems and Methods Explained
- K-Factor Transformers
- Transformer Terms and Definitions
Identify properties, types, and applications of auxiliary devices 2, 3, 4
- Functional Testing for a Sudden Pressure Relay
- Gas Detector Technical Guide ABB 4
- Transformer Auxiliary Protection Devices
- Transformer Tap Changers: Basic Principles and Testing Explained
- Effect of CT Saturation on Transformer Differential Protection
2. Inspection and Test Procedures
Apply visual and mechanical inspections 2, 3, 4
- NFPA 70 2017: Article 450 Transformers and Transformer Vaults 2 3 4
- Article 450: Transformers and Transformer Vaults
- IEEE C57.12.00 Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers 4
- High Resistance Grounding... Is It More Than Just a Big Heater? 3
- 3 Routine Inspections and Checks for Liquid Filled Transformers
- Understanding Transformer Noise
- Transformer Humming Noise Explained
Employ methods and procedures for electrical tests 2, 3, 4
- NFPA 70B: 11.11 Transformer Tests 2 3 4
- Transformer Diagnostics Handbook Instructions, Standards, and Techniques 3
- IEEE C57.12.90 Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers 3
- Transformer Diagnostics and Condition Assessment
- Introduction to Transformer Turns Ratio Testing
- Transformer Turns Ratio (TTR) Explained
- Transformer Polarity Test Procedures
- Transformer Winding Resistance Testing Explained
- Shorting transformer windings for PI, why is it done?
- Transformer Testing — Are You Missing the Test Point?
- Application guide for power factor testing of power & distribution transformers
- Power factor testing of power and distribution transformers
- Power Factor Testing Dry-Type Transformers
3. Interpretation of Test Results
Evaluate results of electrical tests 2, 3, 4
- NETA-ATS 2017: Section 7.2 Transformers 2, 3, 4
- NETA-MTS 2019: Section 7.2 Transformers 2, 3, 4
- Fundamental Understanding of Frequency Response Characteristic
- How Transformer Age
- How Old is Your Transformer?
- A Guide to Transformer Winding Resistance Measurements
Last Update: Aug 21, 2023
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Guide Table of Contents, Book 3
- Book 3 Overview
- A. Switchgear and Switchboard Assemblies
- B. Transformers
- C. Cables
- D. Metal-Enclosed Busways
- E. Switches
- F. Circuit Breakers
- G. Circuit Switchers
- H. Network Protectors
- I. Protective Relays
- J. Instrument Transformers
- K. Metering Devices
- L. Regulating Apparatus
- M. Grounding Systems
- N. Ground-Fault Protection Systems
- O. Rotating Machinery
- P. Motor Control Centers and Motor Starters
- Q. Adjustable-Speed Drive Systems
- R. Direct-Current Systems
- S. Surge Arresters
- T. Capacitors and Reactors
- U. Outdoor Bus Structures
- V. Emergency Systems
- W. Automatic Circuit Reclosers and Line Sectionalizers
- X. Fiber-Optic Cables
- Y. Insulating Liquids and Gases
- Z. Fuses
- AA. Electric Vehicle Charging Systems