6-2-2-4-proverka-obmotki-vozbuzhdeniya-rotora.html
6.2.2.4. Check of a winding of excitation of a rotorServiceability of a winding and reliability прилегания brushes to contact rings can be checked up at the stand, without assorting the generator, having measured resistance between the tip «67» and weight of the generator.
If the winding has no short-circuited coils and a brush are ground well in to contact rings resistance should be 4,2–4,7 Ohm at temperature 20 ° With.
After generator dismantling check resistance of a winding of excitation between two contact rings which (4,3±0,2) the Ohm at temperature 20 ° S.Pri it should be necessary to watch reliability of contact between rings of a rotor and the conductors attached to them.
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