1. GENERAL
The Short-Circuit Testing Liaison (STL) provides a forum for voluntary international collaboration between testing organisations. The basic aim is the harmonised application of IEC and Regional Standards for the type testing of electrical power equipment.
Note: STL is concerned with high voltage electrical transmission and distribution power equipment (i.e. above 1000V a.c. and 1200V d.c.) for which the type tests specified in Standards include short-circuit and dielectric verification tests.