Hey everyone! I recently installed a 10Kwh Deye inverter, and today was the first time we tried running it off batteries to save on our grid bill. Everything worked perfectly throughout the day while we used various appliances like the dishwasher and washing machine. However, later on, when we were just using lights, a mini PC, and an air conditioner, I heard my PC's UPS making strange clicking noises. I checked it, and it showed the voltage had dropped to 110V when we usually operate around 220-230V! A few moments later, I received a notification that we had gone off-grid, and after looking at the Deye cloud, I confirmed that we indeed lost the grid connection. I initially thought a fuse had tripped, but it turned out Deye just disconnected from the grid for some unknown reasons. My concern is: doesn't the Deye inverter have a voltage regulator for the load port? I'm worried that 110V could damage my devices, and I thought I'd be protected from any grid-related voltage fluctuations. What might have caused this voltage drop? Sorry if my English is a bit off; I'm not a native speaker. Thanks for any help!
2 Answers
I don't think Deye works exactly like typical hybrid inverters regarding grid input. The way you describe your setup—running as 'always online'—is crucial. If it’s not maintaining that, there might be a period where it defaults to a lower voltage output. That could explain the sudden drop you experienced. It's definitely a good idea to monitor settings and see if there’s a firmware update or something specific to Deye that could help stabilize the voltage!
It's tricky with hybrid inverters! They usually pass grid voltage through and provide a bit of extra current over that voltage. If there's an issue with the grid voltage, it can take a few milliseconds to switch over to internal voltage regulation. So, if your Deye unit is anything like mine, it might adjust from whatever the grid voltage is to a stable output. Just keep in mind that you need to have the inverter constantly online to ensure it provides clean power, which means you lose a bit of power due to conversion. I’d recommend checking the settings on your setup to make sure it’s optimized for that scenario!