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Charging via Critical Output when in BackUp Mode

Hello! Our client is using our 3P+N DC-AC bidirectional invertor connected to the Critical Load Output of your invertors. The same connection was tried on the following sets. Set #1. "Victron with 3X3 kVA inverters connected in star – 400V+ neutre – 50 Hz" Set #2. "Victron with 3X10 kVA inverters connected in star – 400V+ neutre – 50 Hz" They ask why our invertor does not discharge to your system when VICTRON is in a backup mode (disconnected from the grid). When VICTRON system is connected to the grid, things work Ok. Basically, the customer wants to make VICTRON connected batteries to charge from our invertor when VICRTRON is in the back up mode. I would like to ask if: 1) Critical AC Output of VICRTON invertors are designed to be used for a power injection from "LOAD" to VICTRON in backup mode at all? 2) Are there any assumtions why this scheme would not work with respect to VICTRON embedded logic? Thank you in advance for your support.

Lithium Batterycharger
2 |3000

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