本技术报告IEC/TR 62271-310:2008适用于额定电压为52 kV以上且用于架空线路的E2类断路器。测试程序基于25年期间由于电流中断而累积的电气应力，这被选为免维护间隔的代表。IEC/TR 62271-310的第二版取消并取代了2004年发布的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: -减少磨损阶段的测试次数； -寿命终止热中断能力论证验收测试的新定义。

This technical report IEC/TR 62271-310:2008 is applicable to class E2 circuit-breakers above a rated voltage of 52 kV and above intended for use on overhead lines. The test programmes are based on accumulated electrical stresses due to current interruption during a period of 25 years, which was chosen as representative for a maintenance-free interval. This second edition of IEC/TR 62271-310 cancels and replaces the first edition published in 2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- reduction of number tests in the wear stage;
- new definition of acceptance test for demonstration of end-of-life thermal interruption capability.