- The MFR13 calculates the asymmetry as the maximum deviation of each delta voltage from the average.
- In Principle it is the ANSI standard, but
- ANSI: monitor MAX / Average in [%]
- MFR13: monitor MAX-Average in [V]
The MFR300 calculates the asymmetry from the negative sequence in relation to the nominal voltage
The formula of the negative sequence is:
The monitoring would be for |G| / nominal voltage