In power system, the general conditions for the selection of electrical equipment are
Electrical equipment to be as reliable as possible, must be selected according to the normal working conditions and the short circuit conditions for a variety of checks (such as thermal stability check and dynamic stability check)For some equipment also need to check the special items, such as circuit breakers and fuses to check the ability to break the current, the current limiting reactor to check the normal voltage loss and bus residual voltage, etc..
Suitable voltage rating, suitable for workplace and environment, necessary protection
Rated conditions, such as voltage and current, thermal stability, dynamic stability check, the most basic
