Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 12, Problem 1RQ
What is the primary consideration for personnel performing transformer maintenance?
Expert Solution & Answer
To determine
The primary consideration for personnel performing transformer maintenance.
Explanation of Solution
The primary consideration for personnel performing transformer maintenance are as mentioned below.
- The transformer is checked whether it is energized or disenerzied.
- Prepare a written switching process of each step for de-energizing the connections.
- Check all the connections exposed to power supply.
- Use of proper instruments of high voltage rating.
- The atmosphere of transformer tank is checked before entering into the tank for maintenance.
- The gloves and shoes used by personnel must be of good insulation rating.
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OBJECTIVE TYPE QUESTIONS
1.
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2.
(a) sum of maximum and minimum energies
(b) difference between the maximum and minimum energies
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(d) none of the above
Chapter 16: Turning Moment Diagrams and Flywheel 611
The ratio of the maximum fluctuation of speed to the mean speed is called
3.
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4.
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Chapter 12 Solutions
Electrical Transformers and Rotating Machines
Ch. 12 - What is the primary consideration for personnel...Ch. 12 - What are the basic steps of transformer...Ch. 12 - Why is it important to keep accurate records of...Ch. 12 - What environmental conditions affect the life of a...Ch. 12 - What factors govern the type of maintenance...Ch. 12 - What tests must be made before entering a...Ch. 12 - What devices and procedures should be used to...Ch. 12 - What is a special hazard encountered in large...Ch. 12 - List some of the protective relays found with...Ch. 12 - Before opening manholes on large transformers,...
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