FIELD: electricity.
SUBSTANCE: invention relates to tests of a load tap changer of a transformer. Essence: a test signal that is fed into the transformer winding and the load tap changer is generated. Activating the tap changer in order to change the transformation ratio. Determining the transformer electrical resistance during the tap changer actuation step depending on the test signal.
EFFECT: technical result: simplification.
12 cl, 8 dwg
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