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230 VAC Compressor

08/11/2010 9:33 AM

How is it possible for a 230 volt single phase compressor to run on 208 volts for ten years before it broke? The compressor was a 1965 and 230 vac only.

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#1

Re: 230 vac compressor

08/11/2010 9:48 AM

230 to 208 is just above 10% under voltage. Most of the equipments would run on this value. And being of 1965, the factor of safety might be mush larger than those of todays where each $ is scraped off the equipment.

We have a few of german machines still working and with better performance and accuracy after about 30 years than the machines, a couple of years old, you know from where.

Also we know, as OEM, our turbines are regularly loaded to 525-550MW when they were young (rating 500MW) and they are running for >25 years. Of course what is the output at the moment I don't know.

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#2

Re: 230 vac compressor

08/11/2010 9:51 AM

The 208 voltage is reasonably close to 230. So the motor would run. Current would be high at full load. If the compressor is broken I do not think the cause is the low voltage. The low voltage would cause a motor problem. I am not sure if the 1965 is reference to a model or date of manufacture. If date of manufacture what do you want for a 45 year old compressor and motor? If that is the case it did good to last that long.

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