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Operational characteristics of trailing cable splices.

Authors
Yenchek-MR; Schuster-KC
Source
IAS '95: Conference Record of the 1995 IEEE Industry Applications Conference: Thirtieth IAS Annual Meeting, October 8-12, 1995, Orlando, Florida. Piscataway, NJ: Institute of Electrical and Electronics Engineers, 1995 Oct; 3:1993-1999
NIOSHTIC No.
10012575
Abstract
The US Bureau of Mines investigated the operational characteristics of spliced portable power cables. This research had a dual purpose: (1) to, determine the thermal and mechanical performance of repaired trailing cables and compare them with undamaged cables, and (2) to gauge the impact of long-term localized heating on the insulating and jacketing materials contained in cable splice kits accepted or approved by the Mine Safety and Health Administration. The ranges of splice joint resistance and tensile breaking strength were determined from laboratory measurements. The choice of crimping tools affected the strength of the splice under tension. Thermal profiles of energized spliced cables were constructed, which showed that spliced conductor joints operated 5 to 20C hotter than the intact cable at rated currents. Accelerated life tests of thermally-aged samples of splice kit insulation and jacket materials confirmed a deficiency in the thermal rating of the insulating tape. The recommendations in this paper may be utilized to revise splice kit design, splice kit acceptance criteria, and trailing cable loading guidelines. Characterizing the thermal operating limits of spliced trailing cables may help to minimize associated risks from explosions, fires, personnel burns, and shock.
Keywords
Splicing-tools; Thermal-analysis; Performance-tests; Splicing; Tapes; Adhesives; Tensile-strength; Mining-engineering; Wiring; Power-lines; Accelerated-life-tests; Splices
Publication Date
19950101
Document Type
Conference/Symposia Proceedings
Fiscal Year
1995
NTIS Accession No.
NTIS Price
ISBN No.
0780330080
Identifying No.
OP 201-95
NIOSH Division
PRC
Source Name
IAS '95: Conference Record of the 1995 IEEE Industry Applications Conference: Thirtieth IAS Annual Meeting, October 8-12, 1995, Orlando, Florida
State
PA
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