ABB Motor help

[Feg]

Hi,

We're looking at our motors on site, we have mainly ABB and some Brook Crompton. We are trying to identify the efficiency class of motors we have and are getting very little help from either of the manufacturers. What I need to find out is if the motor is EFF2 or EFF1.

M2QA160M4
M2AA160M4
M3AA160MA2
M3AA160MLA2

The ABB name plate does not state the EFF class on all the motors. Some will say EFF1 but others with very similar model no's do not have it stamped on and this is where I need some help.
When I look on the ABB site the M3AA says IE2 (EFF1) but we have been told by an agent the motor is EFF2 and so i don't know what to think. the motors in question are between 2 to 10 years old. Any help would be great.
F.E.G

 

[juleselec]

Feg, I would go and have a look at the EURODEEM database:

http://re.jrc.ec.europa.eu/energyefficiency/eurodeem/index.htm

It's free to download and it has a ton of motors. I had a look myself and there is a match for those motors, e.g.

Model Voltage FL_Eff Eff_75% Eff_50% Eff_25%
--------------------------------------------------------
M2QA 160 M4A 400V 89.5 90 89 82.1
M2QA 160 M4A 380V 89.5 90 87.5 81.5
M2AA 160 M 380V 88.1 89.8 89.7 85.7
M2AA 160 M 400V 89.1 89.8 89.3 84.6

You should be able to take the efficiency values and work out for yourself whether they are EFF1, EFF2, etc.

Cheers,
Jules

 

[7anoter4]

I don't know if the ABB catalogue I have with me is the last updated but here you may differentiate the motor efficiency according to
Product Code number. See:
"ABB IEC Low Voltage Induction Motors 400 V 50 Hz"

http://www.google.co.il/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&ved=0CCYQFjAA&url=http://

http://www.krechina.com/docs/produc...x9zZBw&usg=AFQjCNG-e88otye0y2WYf3vJao3DEDt0OQ

For instance :
General purpose aluminum motors
M2AA160MA 2-poles [400 V, 50 Hz, 11kw]
P.Code 3GAA 161 111 it is EFF2 and P.Code 161 101 it is EFF1.

 

[micalbrch]

If the motors are new and subjected to the new energy efficiency classes, they will have to have the efficiency class stamped on the name plate. That means if your motors are not stamped with an efficiency class they will most probably be EFF2 (now IE1) because anything apart from the old standard (EFF2) was usually stamped on the nameplate.