This standard applies to single-phase ferromagnetic resonance AC voltage stabilizing transformers used in electronic equipment and similar products. The operating voltage of any winding of the stabilizing transformer is not higher than 5kV, and the power frequency is 50Hz. The capacity of the voltage stabilizing transformer is not greater than 3kVA. The technical requirements stipulated in this standard are determined based on the data of the voltage stabilizing transformer when it operates with a resistive load. When the load of the voltage stabilizing transformer is inductive or capacitive, a simulated load circuit should be used to test various technical indicators of the voltage stabilizing transformer.
SJ 2605-1985 history
1970SJ 2605-1985 General specification for constant voltage transformers for use in electronic equipment