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28-03-2008, 06:15 AM #1
compressor ratings in horse power
what is the relationship between motor power and pump power in a compressors. say how do you know a compressor power when you have motor power in watts. For example you have a compressor with name plate reading 220V 32A LRA. how can you make use of this to know how many horse power is a compressor
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28-03-2008, 06:43 AM #2
Re: compressor ratings in horse power
watts = voltage x amps
horsepower is K-watts divided by 0.75Last edited by paul_h; 28-03-2008 at 07:08 AM. Reason: kilowatts, not watts
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28-03-2008, 05:22 PM #3
Re: compressor ratings in horse power
LRA = locked rotor amps which is nothing to do with the motor power or refrigerating effect of the pump.
You need to refer to the compressor manufacturers' data sheet for the compressor model for duty ratings etc.Brian - Newton Abbot, Devon, UK
Retired March 2015
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28-03-2008, 05:33 PM #4
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28-03-2008, 11:42 PM #5
Re: compressor ratings in horse power
Quite understandable Paul, we only have so many brain cells in use at one time.
Well, that's what I'm told by the wifeBrian - Newton Abbot, Devon, UK
Retired March 2015
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29-03-2008, 08:00 AM #6
Re: compressor ratings in horse power
The compressor rating can be assessed on based on the refrigerant, Evap. Temp. and the Cond. Temp. Based on the rating the electrical load kw could be found from the compressor rating chart.
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30-03-2008, 12:07 AM #7
Re: compressor ratings in horse power
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