Why no Inverter efficiency ratings?

orbital

Flashlight Enthusiast
Joined
Feb 8, 2007
Messages
3,259
Location
WI
+

Power supplies have efficiency ratings , there's Silver Plus~ Gold Plus~ Platinum Plus ect..
ex: Gold Plus is 87% efficient or 13% waste heat


Why are there no efficiency ratings for Inverters??
..would you spend a bit more if an inverter generated less waste heat & drew less battery?
 

KITROBASKIN

Flashlight Enthusiast
CPF Supporter
Joined
Mar 28, 2013
Messages
4,109
Location
New Mexico, USA
Our off grid home inverter specs (3524):


273AB97F-87BC-4C45-8A41-0637F896E6DA.png
 
Last edited:

KITROBASKIN

Flashlight Enthusiast
CPF Supporter
Joined
Mar 28, 2013
Messages
4,109
Location
New Mexico, USA
As you can see, efficiency comes in different flavors. Note the idle power/no load as well as sleep/search mode consumption, if your use will include those aspects.

Side note: really appreciating the Bluetooth connection on the Victron. We did not pay for a display, just the dongle so readings are easy to view on a phone. Definitely do not like the battery connections so close, right next to each other, though.
 

jtr1962

Flashaholic
Joined
Nov 22, 2003
Messages
6,628
Location
Flushing, NY
I'm actually kind of surprised at the numbers. I had assumed most inverters had efficiencies in the high 90s, like 98%. 90% sounds good at first glance, but if you're driving a 3kW load that's 333 watts of waste heat to get rid of.
 

orbital

Flashlight Enthusiast
Joined
Feb 8, 2007
Messages
3,259
Location
WI
+

Having a standardized certification* to be Silver, Gold, or Platinum efficiency would weed out all the really sketchy inverter units.
There is no way most of them would want it, simply because their specs are absolute fiction.

Samlex USA would be the first to step up for such a certification.


*done by UL or similar
 

Dave_H

Enlightened
Joined
Nov 3, 2009
Messages
759
Location
Ottawa Ont. Canada
Efficiencies for converters this large need to be up in the 90% or higher to keep the lost power/heat manageable.

I read that up around 98% efficiency could be achievable using Gallium Nitride transistors but depends on a lot of different factors.

Dave
 

Lynx_Arc

Flashaholic
Joined
Oct 1, 2004
Messages
11,213
Location
Tulsa,OK
If the efficiencies are ANSI ratings.... may not be very useful as they pretty much all but useless regarding LED flashlights. I remember growing up with audio output ratings in RMS then shifting to max output and peak max output at 1Khz even.
 

orbital

Flashlight Enthusiast
Joined
Feb 8, 2007
Messages
3,259
Location
WI
+

Power Supply Ratings (AC to DC)
Like to see similar with Inverters (DC to AC)


Percentage of rated load10%20%50%100%10%20%50%100%10%20%50%100%
80 Plus test type[4]Icon115 V internal non-redundant230 V internal redundant230 V EU internal non-redundant
80 Plus
50px-80_Plus_Standard.svg.png
80%80%80%82%85%82%
80 Plus Bronze
50px-80_Plus_Bronze.svg.png
82%85%82%81%85%81%85%88%85%
80 Plus Silver
50px-80_Plus_Silver.svg.png
85%88%85%85%89%85%87%90%87%
80 Plus Gold
50px-80_Plus_Gold.svg.png
87%90%87%88%92%88%90%92%89%
80 Plus Platinum
50px-80_Plus_Platinum.svg.png
90%92%89%90%94%91%92%94%90%
80 Plus Titanium
50px-80_Plus_Titanium.svg.png
90%92%94%90%90%94%96%91%90%94%96%94%


note: the graph shifted to the right when I pasted it.. you get the idea though.
 

turbodog

Flashlight Enthusiast
Joined
Jun 23, 2003
Messages
5,902
Location
Southern USA
Most are crap because people are up-converting 12/24vdc to 120vac. The 48v units are better.
 
Last edited:
Top