a) The most common method of classifying the solid insulating materials is based upon their chemical compositions, distinguished mainly between inorganic, organic and the composites of the two materials. With aid of diagram, classify the properties and differences of PVC and porcelain materials in insulation systems.
a) The most common method of classifying the solid insulating materials is based upon their chemical compositions, distinguished mainly between inorganic, organic and the composites of the two materials. With aid of diagram, classify the properties and differences of PVC and porcelain materials in insulation systems.
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.26P: A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a...
Related questions
Question
![Question 2
a) The most common method of classifying the solid insulating materials is based
upon their chemical compositions, distinguished mainly between inorganic, organic
and the composites of the two materials. With aid of diagram, classify the properties
and differences of PVC and porcelain materials in insulation systems.
b) An oil-immersed 11kV/3.3kV distribution transfomer is experincing some
abnormalities based on oil analy sis report at steel factory. Based on the maintenance
personnel, the affected transformer always operates at higher loading during peak
production period and tripping of unit will take place frequently due to operational
issues. Besides that, oil/winding temperature of the unit increased by 30% from the
intial reading of 70 degC during overloading period. Based on the Table 2 (b)
below, briefly intepret the:
i. Causes and affects on the transformer's operating condition
ii remedial action plans on this transformer to prevent solid or liquid dielectric
breakdown or failures.
Test values
Parameters
Dielectric Strength (KV)
Acidity (mgKOH/gm)
Color
Liquid Power Factor
Water Content (ppm)
Hydrogen (H2) (ppm)
Oxygen (02) (ppm)
Nitrogen (N2) (ppm)
Methane (CH4) (ppm)
Carbon Monoxide ( CO) (ppm)
Carbon Dioxide (CO2) (ppm)
Ethane (C2H6) (ppm)
Ethylene (C2H4) (ppm)
Acetylene (C2H2) (ppm)
30
0.002
1.5
0.08
20
400
10,200
102,424
90
1707
12756
2
2
Table 2 b](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4432bc32-ea28-4934-8dc4-c43abbac2227%2F5d152bad-2a55-4ece-9551-d799bab2a758%2Fyb6d7uc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 2
a) The most common method of classifying the solid insulating materials is based
upon their chemical compositions, distinguished mainly between inorganic, organic
and the composites of the two materials. With aid of diagram, classify the properties
and differences of PVC and porcelain materials in insulation systems.
b) An oil-immersed 11kV/3.3kV distribution transfomer is experincing some
abnormalities based on oil analy sis report at steel factory. Based on the maintenance
personnel, the affected transformer always operates at higher loading during peak
production period and tripping of unit will take place frequently due to operational
issues. Besides that, oil/winding temperature of the unit increased by 30% from the
intial reading of 70 degC during overloading period. Based on the Table 2 (b)
below, briefly intepret the:
i. Causes and affects on the transformer's operating condition
ii remedial action plans on this transformer to prevent solid or liquid dielectric
breakdown or failures.
Test values
Parameters
Dielectric Strength (KV)
Acidity (mgKOH/gm)
Color
Liquid Power Factor
Water Content (ppm)
Hydrogen (H2) (ppm)
Oxygen (02) (ppm)
Nitrogen (N2) (ppm)
Methane (CH4) (ppm)
Carbon Monoxide ( CO) (ppm)
Carbon Dioxide (CO2) (ppm)
Ethane (C2H6) (ppm)
Ethylene (C2H4) (ppm)
Acetylene (C2H2) (ppm)
30
0.002
1.5
0.08
20
400
10,200
102,424
90
1707
12756
2
2
Table 2 b
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Power System Analysis and Design (MindTap Course …](https://www.bartleby.com/isbn_cover_images/9781305632134/9781305632134_smallCoverImage.gif)
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning
![Power System Analysis and Design (MindTap Course …](https://www.bartleby.com/isbn_cover_images/9781305632134/9781305632134_smallCoverImage.gif)
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning