= voltage sag

olemus
toitepinge järsk langus madalamale 90% nimipingest,
kusjuures pinge taastub 10 ms kuni 10 min jooksul
=
a short duration reduction in root mean square voltage

ülevaateid
https://www.riello-ups.com/questions/48-what-s-the-difference-between-a-voltage-sag-and-a-surge

https://en.wikipedia.org/wiki/Voltage_sag

http://www.powerqualityworld.com/2011/03/voltage-sags-dips-power-quality-basics.html

vt ka
- alapinge
- pingemuhk