What are the serious consequences of transformer circulation?
The connection group number must be the same, the wiring group is different, the transformer secondary voltage phase is different, at least 30 °, the voltage difference will be a great circulation, burn the transformer.
Two parallel transformer transformer ratio is not equal, the two transformers due to the same phase between the phase difference generated by the circulation, the size of the flow of two transformers to determine the size of the difference, according to the magnetic potential balance, although the two transformers Side of the same power supply, but due to the secondary side of the pressure cycle, two transformers will also produce a circulation at the same time.
In a three-phase power system, the three-phase voltage (or current) at the same time is the position of the phase, usually symmetrical balance of the three-phase voltage or current phase of the phase check 120 °, in the power system, generators and transformers Whether the phase is consistent, directly related to whether they can run side by side, and then the electromagnetic connection of the same system side by side or two transformers side by side, and the new line when the measurement phase is indispensable one of the experimental project, the purpose of the measurement is to determine the phase and Whether the phase sequence is correct, to prevent the phase and phase sequence from each other, in parallel with the short circuit or a huge circulation caused by burning equipment.
