Silent generators

[grim101]

How silent are these "Silent" generators.

I see they quote 67 decibels?

Looking at a enclosed diesel genny for the house, but don't want something that makes a noise like my neighbors cheapy.

 

[AlphaJohn]

If you want silent you looking for inverter genny but they gonna cost you.

Example
2 Kva Inverter genny = around R10 000-R12 000
2 Kva Plain Genny = around R4 000-R6 000

Good housing can normally drop sound 10 - 30 db depending on mats used.




I would say buy normal and use extra cash for proper housing with proper baffling to muffle the sound. For me that was not an option as I stay in a complex, so opted for Inverter and battery set-up instead.

 

[B-1]

They are not silent but they are better than the typical one you can hear 5 houses away. 67db is decent as well as the typical open gennie is over 100db.

 

[AlphaJohn]

They are not silent but they are better than the typical one you can hear 5 houses away. 67db is decent as well as the typical open gennie is over 100db.

Erm a good old 7 kVa is only 71db
and 12 Kva Diesel only 75db

That 100db must be a beast

 

[grim101]

Bundu Power | BP6500SP Petrol Generator

Buy the BP6500SP 5.5 kVA Petrol Generator online. Reliable backup power for load shedding in South Africa.

www.bundupower.co.za

One of these?

 

[Lupus]

If you want silent you looking for inverter genny but they gonna cost you.

Example
2 Kva Inverter genny = around R10 000-R12 000
2 Kva Plain Genny = around R4 000-R6 000

Good housing can normally drop sound 10 - 30 db depending on mats used.

View attachment 1086833


I would say buy normal and use extra cash for proper housing with proper baffling to muffle the sound. For me that was not an option as I stay in a complex, so opted for Inverter and battery set-up instead.

My 2.8kva isn't actually that loud you can have a conversation over it. My 900kva is a few dB higher. But guess it's 2 stroke vs 4 stroke.

 

[AlphaJohn]

Bundu Power | BP6500SP Petrol Generator

Buy the BP6500SP 5.5 kVA Petrol Generator online. Reliable backup power for load shedding in South Africa.

www.bundupower.co.za

One of these?

Comparrison

MAC AFRIC 6.5 kVA (5 KW) Standby Enclosed Type Diesel Generator - 220V Single Phase - Adendorff Machinery Mart

A diesel-powered electricity generator. The engine is enclosed in a sound-shielded cover, making it ideal to provide backup power to a home or small business. diesel Electric (keyed) start Enclosed design

www.adendorff.co.za

But yeah build a housing for it like @Grouter did ova here and you should be fine.

 

[B-1]

Erm a good old 7 kVa is only 71db
and 12 Kva Diesel only 75db

That 100db must be a beast

Most of the specs you see are at quarter power etc. Look for the full load specs here's a honda for instance which is actually pretty decent:

 

[grim101]

Comparrison

MAC AFRIC 6.5 kVA (5 KW) Standby Enclosed Type Diesel Generator - 220V Single Phase - Adendorff Machinery Mart

A diesel-powered electricity generator. The engine is enclosed in a sound-shielded cover, making it ideal to provide backup power to a home or small business. diesel Electric (keyed) start Enclosed design

www.adendorff.co.za

But yeah build a housing for it like @Grouter did ova here and you should be fine.

Diesel or petrol?

I doubt that building an enclosure will be happening.

Thinking of putting it in the garage with exhaust to outside.

 

[Matt91]

Erm a good old 7 kVa is only 71db
and 12 Kva Diesel only 75db

That 100db must be a beast

My 8Kva is 85db (according to the manual) - he must be using a tractor as a gennie

 

[Voicy]

My 2.8kva isn't actually that loud you can have a conversation over it. My 900kva is a few dB higher. But guess it's 2 stroke vs 4 stroke.

What on earth are you doing with a 900kva? 1300Amps per phase can power your whole street and then some.

 

[Matt91]

What on earth are you doing with a 900kva? 1300Amps per phase can power your whole street and then some.

Lol I think he meant 900w

 

[Lupus]

Lol I think he meant 900w

Yeah I did, my phone must've put kva sorry

 

[Lupus]

What on earth are you doing with a 900kva? 1300Amps per phase can power your whole street and then some.

900w sorry phone does funny things when I swipe and early morning I don't double check

 

[Matt91]

Diesel or petrol?

I doubt that building an enclosure will be happening.

Thinking of putting it in the garage with exhaust to outside.

I was unpleasantly surprised at just how loud and irritating a generator is. I'm gonna try improve the situation with these. Might be useful for you too?

https://www.bidorbuy.co.za/item/517...ic_Panels_Studio_Soundproof_Foam_Padding.html

 

[AlphaJohn]

I was unpleasantly surprised at just how loud and irritating a generator is. I'm gonna try improve the situation with these. Might be useful for you too?

Toto's Africa needs new lyrics to include Gennies

 

[Lupus]

Toto's Africa needs new lyrics to include Gennies

Oh it's had it for most of Africa, South Africa is the biggest generator of electricity on the continent, the other countries are a joke. Even Nigeria can only produce maybe 4GW a day.

 

[Voicy]

I had a look at the soundproofed gens we deal with and the smallest one (8kVA) has the following acoustic reports:



Note the 87dB is recorded right next to the motor.



So point being, you can get some very quiet gens if you go for the soundproofing option.

 

[chrisc]

Got a Honda 4-stroke petrol. 3m from the generator it is a muted purr. Cost R42k a few years back

 

[rh1]

I was unpleasantly surprised at just how loud and irritating a generator is. I'm gonna try improve the situation with these. Might be useful for you too?

https://www.bidorbuy.co.za/item/517...ic_Panels_Studio_Soundproof_Foam_Padding.html

Here in Cape Town, you can buy direct from manufactorer:

FRL Acoustic Foam - - Cape Town Rubber

A flexible polyurethane foam containing a flame retardant additive to reduce ease of ignition and is ideally suited for sound absorption due to its density of 30 kg/m3. This absorption co efficient is increased tremendously when foam is convoluted.

ctrubber.co.za