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Renewable Energy Q&A / Re: Max winding temp
« Last post by lighthunter on April 21, 2022, 07:12:39 am »Hi Pete
Ive not made much progress as yet but am hopeful the mfr. of compressor will come through soon. I emailed them about coming onsite to make the voltage change hoping they will go for that rather than giving out access to their software.
What revolutions is it running at when on 400 volts?"
At 400V 60Hz is the output frequency, as for the RPM , i dont know yet. I will try with a tach to get that number. Hopefully i can estimate load or how underpowered it is by the slip.
"may be worth adding an external fan to increase cooling"
I wish i could... fact is i dont think i could improve on it. It uses the entire enclosure for the aftercooler radiator airflow which is ducted from outside and has a centrifugal fan of something like 10HP. There is so much air flowing around that motor its crazy, i dont think i could improve on that. It literally takes effort to shut a cabinet door while on there is so much air pressure from fan.
"Siemens" you nailed it, thats the brand of this motor.
I will get an rpm measurement at various frequencies including A and V.
Thank You so much for your thoughts! I hate to give up on it seems so close. My hope is that if voltage were bumped from 400 to 480 the motor would not run high temp.
Ive not made much progress as yet but am hopeful the mfr. of compressor will come through soon. I emailed them about coming onsite to make the voltage change hoping they will go for that rather than giving out access to their software.
What revolutions is it running at when on 400 volts?"
At 400V 60Hz is the output frequency, as for the RPM , i dont know yet. I will try with a tach to get that number. Hopefully i can estimate load or how underpowered it is by the slip.
"may be worth adding an external fan to increase cooling"
I wish i could... fact is i dont think i could improve on it. It uses the entire enclosure for the aftercooler radiator airflow which is ducted from outside and has a centrifugal fan of something like 10HP. There is so much air flowing around that motor its crazy, i dont think i could improve on that. It literally takes effort to shut a cabinet door while on there is so much air pressure from fan.
"Siemens" you nailed it, thats the brand of this motor.
I will get an rpm measurement at various frequencies including A and V.
Thank You so much for your thoughts! I hate to give up on it seems so close. My hope is that if voltage were bumped from 400 to 480 the motor would not run high temp.