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Note: Compatibility among the functions
1. LVRT available another function will be fail as below:
Anti-islanding, QU, PF(P), PF Setting, reactive power setting, active
power setting, over frequency derating, GFCI, Grid over frequency
protection, Grid unbalance protection, DCI protection.
2. Only one of these four functions can be valid at one time: QU, PF(P),
PF Setting and reactive power setting.