We know that part of the terminal box is installed outdoors. Outdoor switch in the terminal box, meter, telecontrol equipment and terminals will inevitably encounter condensation problems, resulting in wet effect substation switches stole the jump occurs and other security risks.

Due to rectification of transformer substation in recent years large trenches close tightly, in the case of seasonal changes in particular the temperature suddenly dropped, substation outdoor terminal box condensation phenomenon is particularly serious, Terminal in the terminal box have an effect on the insulation of the wire, pose a great threat to the safe operation of the equipment. In response to this phenomenon, power experts have conducted numerous research as a subject, but have not fundamentally solve the problem.

Rainy day, at a time when winter comes, power Organization for the challenges of management staff of experts tackling. After careful analysis, find the cable channel water vapor dew from the cable between the formation of cracks spread inside the terminal box. So experts first blocking cable plugging gaps between, followed by opening 2 cable before the terminal box cover, allowing the steam to free volatile.

After a period of observation between, turn on the cover of the terminal box in the significant drop in the dew wet, and travels over the wire gap plugging back in the terminal box have no condensation phenomena.