摘  要：ACS800多传动变频器在石油钻机电控系统中已经广泛地被使用，但在使用中难免会由于各种原因出现变频器故障导致停机。停机的原因多种多样，本文从逆变单元的硬件组成入手，介绍了ACS8000降容的思路以及由于模块故障导致停机的降容处理方法，进而也引申出逆变模块硬件判断的方法。降容可以使现场维护者在短时间内进行故障处理，恢复生产，然后择机进行彻底的故障处理，有效地保证了现场生产过程。

关键词：ACS800；钻机；降容

Abstract: ACS800 multidrives inverter has been widely used in the electric control system of drilling rig, but in the use of frequency converter inevitable due to various reasons in failure downtime. Downtime reasons are dive