Is there any requirement for on-grid inverter when I use "Micro-grid" function on Hybrid inverter?

It's working for any third-party on-grid inverter and there has 3 requirement for on-grid inverter:1. Support 'Response to an Increase in Frequency'2. On-grid inverter output power < Max Hybrid inverter EPS output power3. On-grid inverter output power < Max battery charging power