E-3000型电动钻机配电技术改造及效益分析

阐述了进口电动钻机的优越性，并提出了在国内运行时效率低下的问题，通过可行性分析，得出了进口交流电动机完全可由国产电动机代替的结论，并对损坏的进口电动机进行了代换实验，证明了一结论在理论上和实践上完全正确。同时提出了一套改进方案并予以实施，经过１２a的实际使用证明此方案可行、安全可靠。在同类型的钻机上具有推广意义。

Technical reform and its analysis of model E-3000 rig

The writer elaborates the advantages of imported alternating current motor, and the problem of low operating efficiency while using in china. On the basis of analysis, conclusion is draw that domestic current motor can replace imported alternating current motor , it's proved to be applicable by a replacement for a damaged imported current motor. A set of improving project has been carried out, this project has proved to be effective and safe.