July 10, 20205 yr My daughter has just moved into her new apartment. In anticipation of load shedding returning, I purchased 2 x Pylon US3000Bs for an installation in the apartment. There is no way to incorporate solar as the body corporate will not allow it so we are looking at a purely UPS solution to power TV, router, laptops, lights and plug points i.e. a solution to reduce the discomfort of no electricity. I initially wanted to use a Multiplus II 3kVA but I think it would be too noisy. I own one and it can be loud when inverting, too loud to live with in an apartment. I love and I am comfortable with Victron's suite of hardware and software so I would lean in that direction. There is a cupboard above the DB in which the Inverter could possibly be installed but I don't think it will sufficiently deaden the noise. Any thoughts and suggestions?
July 10, 20205 yr Have you looked at the fanless inverters? I use the luxpower with none of the fan noises just massive heatsink keeping it cool, so dead dead quiet it's not blue tho🤪
July 10, 20205 yr 4 hours ago, VisN said: Any thoughts and suggestions? Install the silent fan assistant and wire up a push button to one of the analog inputs. That keeps the fan off. The rest remains the same: The inverter will still switch off if it overheats, and of course this will now happen a lot sooner if you make it work hard. But under low/moderate loads it's going to be fine. This feature is in fact designed for motor homes and other "close quarter" environments, so you can keep the unit quiet at night when average loads aren't going to be that high anyway. If you need to power something on the large side, just flip the switch off 🙂
July 11, 20205 yr 12 hours ago, plonkster said: Install the silent fan assistant and wire up a push button to one of the analog inputs. That keeps the fan off. If you do this don't install the inverter inside the cupboard. That will make it heat up even faster. What you can also do is get a 120mm (or larger) 12v PC fan that you can hook up to the under/topside of the inverter for cooling. Larger fans spin more slowly and thus don't make so much noise.
July 11, 20205 yr I have my setup in apartment & don't think that bit of fan noise is a problem, Multiplus II 3kva & later switched to a 5kva. Neither bugs me
July 14, 20205 yr Author On 2020/07/11 at 12:07 AM, plonkster said: Install the silent fan assistant and wire up a push button to one of the analog inputs. That keeps the fan off. The rest remains the same: The inverter will still switch off if it overheats, and of course this will now happen a lot sooner if you make it work hard. But under low/moderate loads it's going to be fine. This feature is in fact designed for motor homes and other "close quarter" environments, so you can keep the unit quiet at night when average loads aren't going to be that high anyway. If you need to power something on the large side, just flip the switch off 🙂 As simple as that. Thank you. I'm unsure how the switch will be wired up, any links? Regards
July 14, 20205 yr 2 hours ago, VisN said: I'm unsure how the switch will be wired up, any links? The Multi has cleaarly marked analog inputs inside, two terminals. One of the terminals is grounded, and the other has a pull-up resistor. What this means is that they read high when left disconnected, and low if you pull them to ground. In layman's terms, that means you can simply wire a switch between the two terminals , and closing the switch will pull it low. My ISP seems to be having international connectivity issues so I cannot look up a picture of the terminal now. But here is a picture of the switch I've used before (drill a hole, mount it...).
July 14, 20205 yr Author Thank you @plonkster. Placed an order for a Victron MultiPlus II GX 48/3000/35-32.
July 14, 20205 yr Finally managed to get a picture. Just wire it to the AUX1 connections, and configure the assistant to use AUX1.
August 2, 20205 yr Author Installation done. I'm really happy with it. way quieter than expected when idling. The fan switch is located to the right of the Jean Muller battery disconnect and when engaged, makes the system completely silent. Thank you @Jaco de Jongh for the customary wonderful service and patience. Thanks @plonkster for the ' Silence fan' assistant tip. The problems encountered during load shedding have all been mitigated.
August 3, 20205 yr On 2020/07/10 at 11:30 PM, Gelo said: Have you looked at the fanless inverters? I use the luxpower with none of the fan noises just massive heatsink keeping it cool, so dead dead quiet it's not blue tho🤪 Great option awesome product have 3 of them running in off grid mode with 8 x 2.4KW dyness batteries awesome technical backup built in remote monitoring and the client is definately not BLUE 😉
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