Details
| Original language | English |
|---|---|
| Article number | 5595537 |
| Pages (from-to) | 1364-1372 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Dielectrics and Electrical Insulation |
| Volume | 17 |
| Issue number | 5 |
| Publication status | Published - Oct 2010 |
Abstract
Accelerated aging tests have been extensively used on motor and generator insulation systems to simulate in a short time period the deterioration mechanisms occurring during normal operation of many years, to identify insulation system designs with longer life time and to support the qualification of a new system. The contribution presents results from extensive investigations on the behavior of two VPI machine test insulation systems (reference and candidate) with thermal class F (155 °C), which were subjected to three thermal overstresses in repeated cycles. After each thermal cycle the insulation system is subjected to mechanical stress, moisture, and voltage. In order to check the condition of the insulation systems in a non-destructive manner several properties of insulation like dissipation factor, insulation resistance and partial discharge quantities were measured after each thermal cycle. After that the end of life of the insulation systems were checked with ac voltage and impulse voltage. The results support the qualification by comparative evaluation and they indicate, how the changes in electrical and dielectric properties of insulation take place during the accelerated aging test.
Keywords
- Accelerated Thermal Aging, Diagnosis, Dissipation Factor, Functional Test, Insulation Resistance, Insulation Testing, Partial Discharge, Qualification, Rotating Machine Insulation, Thermal Evaluation
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 17, No. 5, 5595537, 10.2010, p. 1364-1372.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Behavior of machine insulation systems subjected to accelerated thermal aging test
AU - Farahani, M.
AU - Gockenbach, E.
AU - Borsi, H.
AU - Schäfer, Klaus
AU - Kaufhold, Martin
N1 - Copyright: Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/10
Y1 - 2010/10
N2 - Accelerated aging tests have been extensively used on motor and generator insulation systems to simulate in a short time period the deterioration mechanisms occurring during normal operation of many years, to identify insulation system designs with longer life time and to support the qualification of a new system. The contribution presents results from extensive investigations on the behavior of two VPI machine test insulation systems (reference and candidate) with thermal class F (155 °C), which were subjected to three thermal overstresses in repeated cycles. After each thermal cycle the insulation system is subjected to mechanical stress, moisture, and voltage. In order to check the condition of the insulation systems in a non-destructive manner several properties of insulation like dissipation factor, insulation resistance and partial discharge quantities were measured after each thermal cycle. After that the end of life of the insulation systems were checked with ac voltage and impulse voltage. The results support the qualification by comparative evaluation and they indicate, how the changes in electrical and dielectric properties of insulation take place during the accelerated aging test.
AB - Accelerated aging tests have been extensively used on motor and generator insulation systems to simulate in a short time period the deterioration mechanisms occurring during normal operation of many years, to identify insulation system designs with longer life time and to support the qualification of a new system. The contribution presents results from extensive investigations on the behavior of two VPI machine test insulation systems (reference and candidate) with thermal class F (155 °C), which were subjected to three thermal overstresses in repeated cycles. After each thermal cycle the insulation system is subjected to mechanical stress, moisture, and voltage. In order to check the condition of the insulation systems in a non-destructive manner several properties of insulation like dissipation factor, insulation resistance and partial discharge quantities were measured after each thermal cycle. After that the end of life of the insulation systems were checked with ac voltage and impulse voltage. The results support the qualification by comparative evaluation and they indicate, how the changes in electrical and dielectric properties of insulation take place during the accelerated aging test.
KW - Accelerated Thermal Aging
KW - Diagnosis
KW - Dissipation Factor
KW - Functional Test
KW - Insulation Resistance
KW - Insulation Testing
KW - Partial Discharge
KW - Qualification
KW - Rotating Machine Insulation
KW - Thermal Evaluation
UR - http://www.scopus.com/inward/record.url?scp=77957899991&partnerID=8YFLogxK
U2 - 10.1109/TDEI.2010.5595537
DO - 10.1109/TDEI.2010.5595537
M3 - Article
AN - SCOPUS:77957899991
VL - 17
SP - 1364
EP - 1372
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
SN - 1070-9878
IS - 5
M1 - 5595537
ER -