Details
| Original language | English |
|---|---|
| Pages (from-to) | 139-143 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Electrical Insulation |
| Volume | EI-22 |
| Issue number | 2 |
| Publication status | Published - Apr 1987 |
Abstract
The electric strengths of three EPR-compounds are investigated using dc, impulse and impulse with dc bias voltages. To see whether dc and impulse strengths are affected by vulcanization residues, breakdown tests are carried out at different times after vulcanization. Different levels of dc prestress cause a considerable influence on the impulse breakdown strength, whereas the duration of dc prestress seems to be without effect. The applied mode of test procedure affects the breakdown results considerably: the breakdown strength measured in a step test procedure is lower than that obtained by the application of a single impulse with high amplitude. This behavior is valid for both polarities of dc prestress. Finally, the effect of repeated impulse discharges on the long-term performance of dc stressed cables is studied. The coherence between cable length, transient voltages, and cable failures is investigated and discussed.
ASJC Scopus subject areas
- Engineering(all)
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Electrical Insulation, Vol. EI-22, No. 2, 04.1987, p. 139-143.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electrical breakdown of epr-insulated cables at DC and impulse voltages
AU - Selle, F.
AU - Schulte, D.
PY - 1987/4
Y1 - 1987/4
N2 - The electric strengths of three EPR-compounds are investigated using dc, impulse and impulse with dc bias voltages. To see whether dc and impulse strengths are affected by vulcanization residues, breakdown tests are carried out at different times after vulcanization. Different levels of dc prestress cause a considerable influence on the impulse breakdown strength, whereas the duration of dc prestress seems to be without effect. The applied mode of test procedure affects the breakdown results considerably: the breakdown strength measured in a step test procedure is lower than that obtained by the application of a single impulse with high amplitude. This behavior is valid for both polarities of dc prestress. Finally, the effect of repeated impulse discharges on the long-term performance of dc stressed cables is studied. The coherence between cable length, transient voltages, and cable failures is investigated and discussed.
AB - The electric strengths of three EPR-compounds are investigated using dc, impulse and impulse with dc bias voltages. To see whether dc and impulse strengths are affected by vulcanization residues, breakdown tests are carried out at different times after vulcanization. Different levels of dc prestress cause a considerable influence on the impulse breakdown strength, whereas the duration of dc prestress seems to be without effect. The applied mode of test procedure affects the breakdown results considerably: the breakdown strength measured in a step test procedure is lower than that obtained by the application of a single impulse with high amplitude. This behavior is valid for both polarities of dc prestress. Finally, the effect of repeated impulse discharges on the long-term performance of dc stressed cables is studied. The coherence between cable length, transient voltages, and cable failures is investigated and discussed.
UR - http://www.scopus.com/inward/record.url?scp=0022702681&partnerID=8YFLogxK
U2 - 10.1109/TEI.1987.298871
DO - 10.1109/TEI.1987.298871
M3 - Article
AN - SCOPUS:0022702681
VL - EI-22
SP - 139
EP - 143
JO - IEEE Transactions on Electrical Insulation
JF - IEEE Transactions on Electrical Insulation
SN - 0018-9367
IS - 2
ER -