I have a Multiplus 12/3000/120 installed for a critical load panel. The output is tied to a ACME 5kVA 120/120-240 transformer. When the unit switches to inverter the inverter makes a weird noise. It does it with and without load. I have a video of the noise it makes, it's a little louder in person. I don't want to damage the inverter and I can't find anything in the book about not using a transformer and victron sells an auto transformer. What is causing this noise and will this damage the inverter?
Here is the info on the transformer: https://www.hubbell.com/acmeelectric/en/Products/Electrical-Electronic/Power-Quality-Conversion/Low-Voltage-Distribution-Transformer/Low-Voltage-Distribution-Transformer---Single-Phase-120208240277---120240V-5kVA/p/1655260
Equipment:
- Multiplus 12/3000/120 2x 1/0 AWG DLO battery cables per terminal.
- 50A AC feeder, 6 AWG THHN
- 50A AC breaker for transformer, 6 AWG THHN
- 1200AH 12v GBS lifepo4 battery with EMUS can bms
- Cerbo GX
