ARRANGEMENT FOR DEFINITION OF THE GROUP OF JOINING OF THE WINDINGS OF A THREE-PHASE TRANSFORMER Russian patent published in 2006 - IPC G01R31/06 

FIELD: the invention refers to electrical measuring technique and may be used for definition of the groups of joining of the windings of a three-phase transformer.

SUBSTANCE: the arrangement has a source of constant voltage and a commutative member providing by turn switching of a source of constant voltage to the outputs AB, BC, AC of the winding of the high voltage of the transformer. Besides the arrangement has additionally a digital oscillograph having a computation block, an energy independent memory, a port of conjugation with a personal computer and three measuring channels of voltage which are connected with the outputs of the winding of the low voltage of the three-phase transformer. At that the commutative member has a starting block, protection circuits of inner keys from overvoltage, an expectation block of nulling currents in the winding of high voltage of the three-phase transformer and has an additional output connected to an additional controlling input of the digital oscillograph.

EFFECT: possibility to automatically define the group of joining of the windings of the three-phase transformer, to operatively store in electronics shape the data of measurements and to document in the personal computer the data of definition of the group of joining of windings.

2 dwg