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Over the last ten years, tree-like growths have been observed in high molecular weight polyethylene (HMW) and crosslinked polyethylene (XLP) high voltage cables removed from utility service. Recently, the failure rates of these types of cables have been increasing and electrochemical trees have been identified as one of the major causes of these failures. There is concern for the remaining service...
Lightning and other surges have been a major problem on aerial cable systems connected to open-wire lines. In 1957, an experimental cable line with variation in shield construction was installed in an area with high lightning incidence. This paper reports the service and test record of the line. In seven years, the line has suffered 19 test failures and one service failure. These failures occurred...
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