The City of Los Angles has several thousand 138 Kv cable joints made by G&W Corp. Before the 1950’s they used bake-o-lite sheath insulators. Subsequently the joints were made with porcelain or glass insulators. Over time the bake-o-lite insulators become porous and allow water to enter the joint. When this happens the joint fails, requiring a very costly replacement, and significant downtime with the subsequent loss of revenue.
ARCOR® recommended its EE-11/EE-95 system. After thorough cleaning, ARCOR® EE-95 is used to rebuild and smooth the damaged insulator. Once this has set a topcoat of ARCOR® EE-11 is brush applied over the entire joint. The system has excellent adhesion to the bake-o-lite/glass/porcelain and has the flex & resiliency needed to provide long-term performance from flexural and thermal stresses. As well as complete protection from water permeation.
For many years the ARCOR® system has been successfully used to seal the insulators and protect them from water permeation, and significantly extend the service life at a fraction of replacement cost.