The most direct cause of cable aging failure is the breakdown of insulation is reduced. Resulting in a lot of low-voltage cable insulation, according to the actual operational experience summarized the following situations.
External injury
From the analysis of operation in recent years, especially in the rapid economic development today, now a considerable number of cable failures are due to mechanical damage caused.
Insulation damp
This situation is also common, usually occurs in the buried pipe or cable pipe joints. For example: the production of substandard cable joints and joints in wet weather conditions, will make joints water or mixed with water vapor, a long time in the electric field under the action of the formation of water tree branches, and gradually damage the cable insulation strength caused by failure.
Chemical corrosion
Cable buried directly in the role of acid-base areas, often lead to cable armoring, lead skin or outer layer of corrosion, the protective layer due to long-term chemical corrosion or electrolytic corrosion, resulting in protective layer failure, insulation reduced, will lead to Cable fault.
Copyright ? 2010 - 2025 zmscable.com All Rights Reserved.
