IEC 62561 electrical testing of US connectors and stranded cable

This paper provides a summary of the testing of Underwriters Laboratories (UL) certified connectors to the electrical requirements of IEC 62561-1, Edition 1. The connectors were tested in configurations interconnecting Class I UL-certified stranded conductors. A discussion of deviations to the pass/fail criteria is provided along with recommendations on modifications to IEC 62561-1, including considerations on modification of pass/fail criteria for connectors used with stranded cable. Observations from the results of the testing reported also identify lightning protection system maintenance and inspection considerations that should be addressed in national and international lightning protection system standards.