Sound or noise level | Two Multiplus-II 120v 48v on Parallel.

[carsantini]

Anyone with a parallel installation of the Multiplus-II 120v who can confirmed that sound or noise level of this setup is reasonable or its too high?

 

[sunshine_eggo]

Speaking from a dual-Quattro perspective, it depends on inverter temps. At low power and mild temps, the fans don't run at all. At higher power/higher temps, the fans are quite noisy.

 

[carsantini]

Speaking from a dual-Quattro perspective, it depends on inverter temps. At low power and mild temps, the fans don't run at all. At higher power/higher temps, the fans are quite noisy.

What about constant humming coming from the transformer??

 

[sunshine_eggo]

What about constant humming coming from the transformer??

Depends on load. Under light load, they're very quiet. Under heavy load, they're quite "hummy."

 

[carsantini]

ok! Do you think is way too high to install on an apartment?

 

[sunshine_eggo]

On a wall in an open room, yes. In an enclosed area (closet with suitable ventilation), probably fine.

 

[carsantini]

Thxs

 

[fafrd]

Speaking from a dual-Quattro perspective, it depends on inverter temps. At low power and mild temps, the fans don't run at all. At higher power/higher temps, the fans are quite noisy.

I’m thinking about a similar setup - under higher-power (ie: ~1.5kW x 2) would the fan noise be enough to be heard through a floor (MPIIx2 one floor below living room)?

I’m using 2 GTIL inverters currently and the loud fan noise under load is one of the reasons I’m thinking of switching to 2 MPIIs instead…

 

[sunshine_eggo]

I’m thinking about a similar setup - under higher-power (ie: ~1.5kW x 2) would the fan noise be enough to be heard through a floor (MPIIx2 one floor below living room)?

I’m using 2 GTIL inverters currently and the loud fan noise under load is one of the reasons I’m thinking of switching to 2 MPIIs instead…

Wrong guy to ask. I find certain noises comforting. I live near a GA airport. I love the sounds of airplanes. Exciting when one of the biz jets takes off. I have a fondness for my inverters. I can't say I would ever find their noise offensive, unless I couldn't have a conversation in the same room, and that hasn't been the case.

 

[fafrd]

Wrong guy to ask. I find certain noises comforting. I live near a GA airport. I love the sounds of airplanes. Exciting when one of the biz jets takes off. I have a fondness for my inverters. I can't say I would ever find their noise offensive, unless I couldn't have a conversation in the same room, and that hasn't been the case.

You’d feel right at home in my house then - when the fans on the GTILs kick-in, it kind of sounds like a jet taking off not too far away…

It’s not loud enough to prevent conversation, but it’s distracting enough that a guest will stop talking and say ‘what is that?’

 

[sunshine_eggo]

You’d feel right at home in my house then - when the fans on the GTILs kick-in, it kind of sounds like a jet taking off not too far away…

It’s not loud enough to prevent conversation, but it’s distracting enough that a guest will stop talking and say ‘what is that?’

My solution would be fewer guests, but that has nothing to do with the fan noise.

 

[John Frum]

Exciting when one of the biz jets takes off. I have a fondness for my inverters.

So you are saying the MP2 fans sound like a Citation X at takeoff.

 

[sunshine_eggo]

So you are saying the MP2 fans sound like a Citation X at takeoff.

Nah... just tickles the same happy spot.