When a transformer is operating under load, changes in the secondary coil current will cause corresponding changes in the primary coil current. According to the principle of magnetomotive force balance, the currents in the primary and secondary coils are inversely proportional to their number of turns. The side with more turns has a smaller current, while the side with fewer turns has a larger current.
This relationship can be expressed by the following formula:
Primary coil current / Secondary coil current = Secondary coil turns / Primary coil turns.
Shenzhen Shen Te Bian Electric Equipment Co., Ltd. (STB) is a national high-tech enterprise specializing in the research, development, and manufacturing of transformers. Founded in 2004 and headquartered in Longgang District, Shenzhen, the company owns a 36,000 m² industrial park with an annual production capacity exceeding 3 million kVA. It was one of the early entrants into the power transformer manufacturing sector in the Shenzhen region. STB is the transformer brand under the company.
