What are ANSI/UL 1449 Third Edition Versus IEC 61643-1 – Key Differences In Testing
prosurge2017-10-31T17:29:56+08:00The following examines a few of the key differences between Underwriters Laboratory’s required test for surge protective devices (SPDs); ANSI/UL 1449 Third Edition and the International Electrotechnical Commission (IEC) required test for SPDs, IEC 61643-1. Short Circuit Current Rating (SCCR): The capacity of current with which the tested SPD can withstand at the terminals where connected, [...]