Electric power rope shovel parts, namely, dipper trips; Dipper trip system for electric rope shovel comprised of electric motor, mechanical reels, and electric drive controller; Power drive reel assembly comprised of electrical motor, mechanical reels, and electric drive controller for use as parts of excavating machinery and excavators, namely, trench excavators, drag-line excavators, hoisting machines, locomotive cranes, shoveling machines, power shovels, and log handling machines