Načelo delovanja transformatorja ničelnega zaporedja
The basic principle of zero-sequence current protection is based on Kirchhoff's current law: the algebraic sum of the complex currents flowing into any node in the circuit is equal to zero. When the line and electrical equipment are normal, the vector sum of the currents of each phase is equal to zero. Therefore, the secondary winding of the zero-sequence current transformer has no signal output, and the actuator does not act. When the ground fault occurs, the vector sum of the currents of each phase is not zero, the fault current causes magnetic flux to be generated in the annular iron core of the zero-sequence current transformer, and the induced voltage on the secondary side of the zero-sequence current transformer causes the actuator to act, driving the The tripping device switches the power supply network to achieve the purpose of ground fault protection.
Obilne varovalke, linija izdelkov pokriva vsa pomembna področja novih energetskih vozil (paket, PDU, BDU, električni nadzor, motor, MSD, nizkonapetostni kabelski snop), polnilni sistem in polnilni modul, fotovoltaična fotovoltaična solarna razvodna omarica, fotovoltaični pretvornik, UPS napajalnik, komunikacijski napajalnik 5G, vtič BS UK, nadzorna plošča električnih gospodinjskih aparatov, napajalnik svetlobnega pogona in tako naprej.
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