TERMINAL INSULATION PROCESSING METHOD FOR TRANSMISSION AND DISTRIBUTION LINE

摘要

PURPOSE:To eliminate the corrosion of the bare copper wire part of a power transmis sion and distribution line and to enable protecting the terminal part of said line over a long period of time, by inserting an insulating cap, where the inner part of a closed end cylindrical insulator is filled with a heat-resistant sealant, into said terminal part. CONSTITUTION:An insulating cap 4, where the inner part of a closed-end cylindrical insulator 2 is filled with a heat-resistant sealant 3, is inserted into the terminal part 1 of a power transmission and distribution line. For example, a polyethylene closed-end cylindrical insulator 2 of 28mm inner diameter, 30mm outer diameter and 120mm length is filled up to a 90mm height from its bottom with a butyl rubber-based heat- resistant sealant 3, which does not hang down by its empty weight even if it is heated at 100 deg.C with a viscosity of 3000 poise (at 20 deg.C) to make an insulating cap 4. On the other hand, an insulating layer of 20mm length from the end of a copper wire of about 28mm diameter is stripped off to form a terminal part 1, which is inserted into said cap 4 and subjected to a terminal insulation processing. In this manner, the corrosion of a bare copper wire part 1' can be eliminated and the terminal part 1 can be protected over a long period of time.