请注意:此版本的所有临时修订版将在您购买时提供。ANSI/UL 4143是风力发电机寿命延长（LTE）标准的第一版，涵盖了风力发电机寿命延长（LTE）规则和程序的要求。

Please note: All interim revisions for this edition available at time of your purchase will be included.This First Edition of ANSI/UL 4143, the Standard for Wind Turbine Generator - Life Time Extension (LTE), covers requirements for the rules and procedures for the life time extension of wind turbines (LTE).