Transformers, as indispensable equipment in the power system, are responsible for converting the voltage of electrical energy up and down, in order to reduce energy losses and line losses during the transmission process. However, an important parameter that occurs during the operation of a transformer is the short-circuit current, which is the current generated when a short-circuit occurs in the output side circuit of the transformer. In the power system, the short-circuit current of transformers is several times the rated current, which is set to respond to sudden situations and ensure the safe operation of equipment. In real life, the short-circuit current multiples vary depending on the region and type of transformer.
Generally, The short-circuit current of a transformer depends entirely on its short-circuit impedance, and the reciprocal of the short-circuit impedance percentage is the multiple of the short-circuit current. For example: If the short-circuit impedance of a transformer is 4%, then the short-circuit current is 25 times the rated current.
It is precisely because of this important parameter that the power system can operate better and provide convenience for people’s lives. At the same time, we should also recognize that with the development of society and the increase in demand, the requirements for the short-circuit current multiple of transformers will also become higher and higher, which requires us to continuously carry out technological innovation and equipment transformation.
PowerTel & his factories can provide you a wide range of power transformer, up 500 kV and a full range of distribution transformer for various applications. Please contact our expert engineers for a custom transformer.