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Full-Load Testing of Large Gearboxes Using Closed-Loop Power Circulation - September/October 1991

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Archive > 1991 > September/October 1991 > Full-Load Testing of Large Gearboxes Using Closed-Loop Power Circulation

The article "Full-Load Testing of Large Gearboxes Using Closed-Loop Power Circulation" appeared in the September/October 1991 issue of Gear Technology.

Summary
This method of testing large gearboxes or, indeed, any power transmission element, had numerous advantages and offers the possibility of large savings in time, energy, and plant, if the overall situation is conducive to its use. This usually requires that several such units need to be tested, and that they can be conveniently connected to each to each other in such a way as to form a closed-loop drive train. No power sink is required, and the drive input system has only to make up power losses. The level of circulating power is controlled by the torque, which is applied statically during rotation, and the drive speed. Principles, advantage, and limitations are described, together with recent experiences in the only known large-scale usage of this technique in Australia.

Keywords
gearbox, testing, gear drives, test rig, closed-loop

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