Brush Type Synchronous Motors
Description
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Brush Type Synchronous Motors Constant Potential, Non-Regulated |
Product Details
A diode rectifier is the lowest cost and most simplistic type of exciter. This type of exciter is a combination isolation transformer with numerous taps and a non-regulated diode rectifier. The voltage output of the rectifier is a direct ratio of AC input to DC output. The exciter output voltage can only be adjusted by changing transformer taps. The current passed to the field is a function of the exciter voltage and field resistance (Ohms law E=IR). The transformer taps can only be changed with the motor and exciter off line. Standard taps provided are five 5% full current capacity taps below the nominal voltage. Total of six taps provided. Kinetics manufactures all our own transformers, with copper conductor as our standard, from 1 to 2000 KVA up to 15 KV class. Providing additional taps to the primary or secondary of the transformer is an available customer option.A full current rheostat can be added to the output of a diode rectifier for manual voltage adjustment to the motor field. In many cases the cost of adding a rheostat exceeds the cost of a SCR regulated rectifier.Depending on the field application control scheme, a CP exciter may or may not be applicable. Care needs be taken to assure compatibility between the exciter and field application controls.
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