GB/T 17625.7-2013 Translated English of Chinese Standard. (GBT 17625.7-2013, GB/T17625.7-2013, GBT17625.7-2013): Electromagnetic compatibility - Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current <= 75 A and subject to conditional connection
https://www.chinesestandard.net, Oct 26, 2018 - Technology & Engineering - 16 pages
This Part is concerned with the emission of voltage changes, voltage fluctuations and flicker produced by equipment and impressed on the public low-voltage supply system. This Part specifies the limits of voltage changes produced by equipment tested under specified conditions. This Part is primarily applicable to electrical and electronic equipment having a rated input current from 16 A up to and including 75 A, which is intended to be connected to public low-voltage distribution systems having nominal system voltages of 220 V, line-to-neutral at 50 Hz, and which is subject to conditional connection.
Test measurement and evaluation procedures
Annex B informative Flow chart showing the evaluation and test procedures
actual system impedance Annex compatibility limits EMC complex impedances conditional connection connected to public dmax test Electromagnetic compatibility limits emission limits Equipment tested equipment with rated Evaluation and declaration flicker in public fluctuations and flicker given in GB/T greater than 16 impedance Zact interface point level to suit Limitation of voltage loads in MV low-voltage distribution systems low-voltage supply systems manual restart manual switching manufacturer shall declare maximum permissible system meet the limits modifies the voltage modulus values nominal voltage Normative references permissible system impedance Plt values power supply interruption Pst and Plt Pst test public low-voltage distribution public low-voltage supply rated current greater reference impedance Zref requirements of GB/T restart the delay series standards service current capacity situation of China subject to conditional suit the actual supply authority supply capacity supply voltage systems for equipment type tests volt-amperes voltage drop voltage fluctuations voltage level Zmax Zsys