Hello,
I have a ESS with a Multiplus II 48/5000/70-50 230Vac inverter, the grid frequency is 50Hz.
In the manual I see 3 options for the input frequency range: : 50, 60 or 45 – 65 Hz.
My grid operator requires using of a Frequency Monitoring Relay (together with Voltage Monitoring Relay, Overcurrent Monitoring) that should disconnect the invertor from the grid in case the frequency becomes lower than 48Hz (for 10sec) or higher than 50.3Hz (for 1 sec)
I wonder what will be the behaviour of the Multiplus II if I set it to frequency 50Hz (the first option), what will be the frequency tolerance accepted by the inverter and at what deviation it will be disconnected from the grid? Also, what willl be the reaction time?
Can the Multiplus II be configured to replace the required external Frequency Monitoring Relay?
