Where is the N wire of the generator?
Thread Content
Hello, experts! I have a question: On ships, the power supply is 380V AC generated by an alternating current generator, and it consists of only 3 phases – A, B, and C – with no N phase. How can 220V electrical appliances be used in such a situation? Some people say that by adding a 380/220V transformer to convert 380V to 220V, electrical appliances can be powered. The voltage can indeed be reduced to 220V, which meets the requirements, but where should the N wire at 220V be connected? Anyone who knows something about this, please give some advice! ! Thank you! !
If the generator output is connected in star configuration, N is connected to the neutral point, which is the common point of the three-phase windings.
The low-voltage system of the ship’s power station is originally a three-phase ungrounded system; the 220V voltage comes from the lighting transformer with a 440V/220V rating, and its secondary side is connected in a triangular configuration
Thank you for the advice; I’ve learned a bit about new industry applications
. The 220V power supply on the ship is provided by the secondary side of the transformer. The generator on a ship usually supplies power in a three-phase format; lighting and domestic electrical needs are met through transformers (which also facilitate connecting to power from the dock when the ship is berthed), and these transformers provide output in a three-phase four-wire configuration. .
The neutral point of 10-kilovolt large generators is also not brought out; it remains locked inside, or it is brought out but not supplied to the power supply system