Study 1 and Results, Without Grading Rings
Study 1
1
In the Model Builder window, click Study 1.
2
In the Settings window for Study, type Study 1, Without Grading Rings in the Label text field.
3
In the Home toolbar, click Compute . The Study node automatically defines a solution sequence for the simulation based on the selected physics and study type. In this case, the simulation only takes a few seconds to solve. Once it is finished, several default plots will show under the Results node.
Results
1
In the Model Builder window, expand the Results > Datasets node, then click Study 1, Without Grading Rings/Solution 1 (sol1).
2
In the Results toolbar, click Attributes  and choose Selection.
3
In the Settings window for Selection, locate the Geometric Entity Selection section.
4
From the Geometric entity level list, choose Domain.
5
Select Domains 2–7 only.
6
In the Model Builder window, under Results > Datasets click Revolution 2D 1.
7
In the Settings window for Revolution 2D, click to expand the Revolution Layers section. In the Revolution angle text field, type 360.
8
In the Model Builder window, under Results click Electric Potential (es).
9
In the Settings window for 2D Plot Group, type Electric Potential, Without Grading Rings in the Label text field and click Plot.
For high voltage insulators, it is of importance to install grading rings at both ends of the insulator to make the electric field distribution more uniform. In the following, add the grading rings and then compare the electric field distributions.