QuickField

A new approach to field modelling

Main >> Applications >> Sample problems

Slot insulation electric stress

electric machine insulation, electric field in the insulation, slot of electric machine

This is an example of the slot insulation simulation, performed with QuickField software.

Problem Type
Plane-parallel problem of AC conduction.

Geometry
Slot insulation electric stress To reduce the field intensity along the surface of insulation the semi-conducting SiC lacquer is applied. Insulation Conductor Rotor (grounded) Coating SiC lacquer

Given
Relative permittivity of coating ε = 4.
Relative permittivity of insulation ε = 3.
Relative permittivity of SiC lacquer ε = 4.
Conductivity of coating g = 10-4 S/m;
Conductivity of insulation g = 10-10 S/m;
Conductivity of SiC lacquer g = 10-8... 10-5 S/m;
Frequency f = 50 Hz;
Voltage Uf = 15000 V;
Breakdown stress E = 25 kV/mm.

Task
In the overvoltage test the voltage U = 2Uf + 5 kV is applied. The field intensity along the surface of insulation should be less than ES < 0.5 kV/mm. To reduce ES value the special semi-conducting SiC lacquer is applied. Determine the distribution of the field intensity along the surface of isolation.

Results
Electric field intensity plot in slot insulation


Electric field intensity plot in slot insulation
  • Video: Slot insulation electric stress
  • Watch on YouTube
  • View simulation report in pdf.
  • Download simulation files (files may be viewed using any QuickField Edition).
  • New version QuickField 6.5

    Product
    Order
    Evaluation request
    Editions
    Version history
    Packages
    Components
    Programming
    Consulting

    Applications
    Industrial
    Educational
    Scientific
    Sample problems
    Success stories
    Customers

    Support
    Webinars
    Virtual Classroom
    Online courses
    Customer login
    Glossary
    QuickField help
    FAQ

    Downloads
    QuickField Student Edition
    User manual
    Data Libraries
    Video
    Free tools

    News
    Product News
    Events
    Publications
    Subscription

    Contacts
    Tera Analysis info
    Resellers
    Contact us
    Online chat
    About us