What are the requirements of SEMI F47 that products tolerate in case of voltage sags?

SEMI F47 requires that products tolerate the following voltage sags:

• 50% remaining voltage, 50% missing voltage, for 200 milliseconds
• 70% remaining voltage, 30% missing voltage, for 500 milliseconds
• 80% remaining voltage, 20% missing voltage for one second.

Released for:Schneider Electric South Africa