This standard specifies the test dimensions of voltage sag and short-time interruption withstand characteristics of low-voltage equipment, performance criteria of equipment under test, test equipment, test layout, test requirements, test process, test result report and data format. This standard applies to electrical equipment with a rated voltage not exceeding 1 kV and a rated frequency of 50 Hz.
GB/T 39269-2020 Referenced Document
GB/T 30137 Power quality.Voltage dips and short interruptions