Note: Compatibility among the functions
1. Once the grid voltage is lower than LVRT trigger voltage, i.e. when it is
in LVRT state, the following functions will be unavailable:
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 the following four functions can be set as valid at one time:
QU, PF(P), PF Setting and reactive power setting.