Protector-tube application and performance on 132-kv transmission lines — II

THE USE of protector tubes (previously referred to as expulsion protective tubes or “deion” gaps) during the past five years or so as devices for protecting transmission lines and equipment against lightning has gained considerable headway, particularly in the protection of high-voltage transmission lines. A number of applications have been made in the medium voltage transmission field, a few in the low-voltage field, and a number of scattered installations for protection of equipment and cables.