Details
| Original language | English |
|---|---|
| Title of host publication | Proc 3 Int Conf Prop Appl Dielectr Mater |
| Pages | 695-698 |
| Number of pages | 4 |
| Publication status | Published - 1991 |
| Event | 3rd International Conference on Properties and Applications of Dielectric Materials - Tokyo, Jpn Duration: 8 Jul 1991 → 12 Jul 1991 |
Abstract
Some results of step test investigations of the damage caused by thermal stress in cast epoxy resin coils are presented. The thermal stress is introduced from outside by way of a liquid heat transmission insulating medium as well as inside with the help of current heat losses. The stress situation considered simulates the overcurrent and short circuit behavior of real dry-type transformers. With internal heating-up it is possible to investigate the superposition of thermal and mechanical stresses caused by overcurrent. Three different specimens are considered. These are laboratory model coils with about two and ten turns and industrially manufactured cast epoxy resin dry-type coils. The influence of the winding wire insulation is examined on laboratory model coils. Finally, the PD stress and PD damage behavior of simplified model arrangements is considered in comparison with casting epoxy resin dry-type transformers.
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Proc 3 Int Conf Prop Appl Dielectr Mater. 1991. p. 695-698.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Investigation of damage-behavior in cast epoxy resin coils under thermal and electrical stress with the help of partial discharge (PD) measurements
AU - Beyer , Manfred
AU - Borsi, H.
AU - Oelert, L.
PY - 1991
Y1 - 1991
N2 - Some results of step test investigations of the damage caused by thermal stress in cast epoxy resin coils are presented. The thermal stress is introduced from outside by way of a liquid heat transmission insulating medium as well as inside with the help of current heat losses. The stress situation considered simulates the overcurrent and short circuit behavior of real dry-type transformers. With internal heating-up it is possible to investigate the superposition of thermal and mechanical stresses caused by overcurrent. Three different specimens are considered. These are laboratory model coils with about two and ten turns and industrially manufactured cast epoxy resin dry-type coils. The influence of the winding wire insulation is examined on laboratory model coils. Finally, the PD stress and PD damage behavior of simplified model arrangements is considered in comparison with casting epoxy resin dry-type transformers.
AB - Some results of step test investigations of the damage caused by thermal stress in cast epoxy resin coils are presented. The thermal stress is introduced from outside by way of a liquid heat transmission insulating medium as well as inside with the help of current heat losses. The stress situation considered simulates the overcurrent and short circuit behavior of real dry-type transformers. With internal heating-up it is possible to investigate the superposition of thermal and mechanical stresses caused by overcurrent. Three different specimens are considered. These are laboratory model coils with about two and ten turns and industrially manufactured cast epoxy resin dry-type coils. The influence of the winding wire insulation is examined on laboratory model coils. Finally, the PD stress and PD damage behavior of simplified model arrangements is considered in comparison with casting epoxy resin dry-type transformers.
UR - http://www.scopus.com/inward/record.url?scp=0026274739&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0026274739
SN - 0879425687
SP - 695
EP - 698
BT - Proc 3 Int Conf Prop Appl Dielectr Mater
T2 - 3rd International Conference on Properties and Applications of Dielectric Materials
Y2 - 8 July 1991 through 12 July 1991
ER -