Effect of dc testing on extruded crosslinked polyethylene insulated cables. Phase 2, Final report
Technical Report
·
OSTI ID:148693
- Detroit Edison Co., MI (United States)
In order to investigate the effect of dc testing on crosslinked polyethylene insulated cables, a research project was initiated under the auspices of Electric Power Research Institute. The results of the laboratory aging on full-size cable samples has been reported in EPRI Report TR101245. This report covers (a) dc testing on cables subjected to accelerated aging under controlled temperature conditions from a different EPRI project (RP2713-02) performed at BICC-Marshall Laboratories (Reynolds CPI), and (b) service-aged XLPE insulated cables from five utilities. Most work was performed with spliced cables, as described in the Phase 1 report. Results confirm earlier findings that dc testing has a deleterious effect on an aged crosslinked polyethylene insulated cable. Data suggest an inflection point in the aging time -- ac breakdown relationship (corresponding to an ac dielectric strength of approximately 300 V/mil), beyond which time this effect becomes more predominant dc voltage application at a voltage stress of 228 V/mil does not appear to detect the bad portion of the cable. However, the cable subjected to dc testing fails earlier upon further ac aging. Recommendations have been made to operating utility companies not to perform dc testing on a crosslinked polyethylene insulated cables after they have been energized in service.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); Detroit Edison Co., MI (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 148693
- Report Number(s):
- EPRI-TR--101245-V2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of dc testing on extruded cross-linked polyethylene insulated cables
Effect of dc testing on extruded cross-linked polyethylene insulated cables
Advanced Diagnostics and Life Estimation of Extruded Dielectric Cable: Nonproprietary Results Related to Cross-Linked Polyethylene and Ethylene Propylene Rubber Insulated Shielded Cables
Technical Report
·
Thu Dec 31 23:00:00 EST 1992
·
OSTI ID:6688245
Effect of dc testing on extruded cross-linked polyethylene insulated cables
Technical Report
·
Thu Dec 31 23:00:00 EST 1992
·
OSTI ID:10138387
Advanced Diagnostics and Life Estimation of Extruded Dielectric Cable: Nonproprietary Results Related to Cross-Linked Polyethylene and Ethylene Propylene Rubber Insulated Shielded Cables
Technical Report
·
Thu Mar 30 23:00:00 EST 2006
·
OSTI ID:878894