Transmission Products (T-1201)

Line Post Insulators Mechanical Ratings

Line post insulators are cantilever support members, with ratings defined as follows: Specified Cantilever Load (SCL) SCL is the ultimate cantilever strength rating of the Quadri*Sil ® line post insulator. SCL is identical to the minimum average breaking load (ABL) rating in previous catalogs. Reference Cantilever Load (RCL) RCL represents the maximum recommended load in cantilever that a Quadri*Sil post insulator is designed to withstand during its life span. RCL equals 50 percent of the SCL, and is identical to the insulator’s maximum working load (MWL) and maximum design cantilever load (MDCL). Combined Load Charts Line design loads for most insulators include tension, or compression, in addition to the primary vertical cantilever load. Longitudinal loading should also be considered. Contact your Hubbell Power Systems representative to request combined load charts.

QUADRI*SIL ®

Corona Performance

Page 250 | July 2016