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, 2018 M10 26 - 16 páginas
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
according to 6.1.3 admissible flicker Annex complex impedances conditional connection connected to public dc and dmax dmax test emission limits Equipment tested equipment with rated Evaluation and declaration flicker in public fluctuations and flicker greater than 16 interface point level to suit Limitation of voltage low-voltage distribution systems low-voltage supply systems manual restart manual switching 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 rated input current reference impedance Zref relative voltage change 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 Test impedance Ztest total disturbing effect type tests volt-amperes voltage drop voltage fluctuations voltage level Zmax Zsys