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No-Load Losses From 'Running Light' Test

Author: E.E. Kimberly

The no-load losses may be found by running the generator as a motor at rated speed and voltage, and measuring the power input. The power input of the armature less the small amount of armature resistance loss is the friction and iron loss. The "running light" test for determining the so-called constant losses is particularly convenient when it is not feasible to drive the generator by a calibrated motor.

Last Update: 2011-01-17