Compressor Windings Resistance

[Woodland]

Help needed please. Could anyone tell me what the resistance of the start and run windings should be on a Turk Elektrik MTH 115MT compressor please. Got this one cutting out after a few seconds on start up and would like to know what part to condemn, incidentally this one has a capacitor and PTC resistor for the start up circuit. Many thanks in advance.

[chemi-cool]

Look in here, hope it will help you.
Use Embraco next time......

http://www.tee.com.tr/p_copm_r600_pd.php

[Woodland]

Thanks for the link Chemi-Cool but can't find any actual resistance values for the start and run windings on there, just voltage and overall wattage. The one I have here is measuring 14 ohms on both the start and the run windings, any one know if this is normal? I thought it should be slightly higher and not the same one both windings.

[Toosh]

Thanks for the link Chemi-Cool but can't find any actual resistance values for the start and run windings on there, just voltage and overall wattage. The one I have here is measuring 14 ohms on both the start and the run windings, any one know if this is normal? I thought it should be slightly higher and not the same one both windings.

Hi wood, have a look at this

http://www.google.co.nz/search?q=refrigeration+single+phase+windings+chart&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-GB:official&client=firefox-a

Norm

[Woodland]

Brilliant! Many Thanks for your efforts Toosh, amazing what you get searching the Internet when you know what to put in search criteria. :o I will let you all know what the fault was when I find it! :)

[nike123]

The one I have here is measuring 14 ohms on both the start and the run windings, any one know if this is normal? I thought it should be slightly higher and not the same one both windings.

It could be the same.

[GHAZ]

Hi woodland you can get the same readings on some windings because they use same amount of wire on both the run and start

[grahamgfm]

It is highly unlikely that the start and run windings would have the same resistance. The start winding would usually be the lower resistance so as to draw a higher current to facilitate the torque required to start the rotor going in the required direction. in conjuntion with a capacitor. The run winding would then keep the rotor turning at a lower run current.