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Nidal
Active Contributor

Join Date: Jul 2008
Posts: 12

meaning of all

02/25/2009 7:13 AM

Hi everybody

can anyone help me to know the meaning of all this table

Electrical

Unit Voltage 400V/50Hz/3Ph Unit power 156.90 kW

Total compressor power 145.60 kW Fan motor power 10.50 kW

RLA - condenser fan

(each)

3.50 A

RLA - compressor A 95.00 A

RLA - compressor B 95.00 A LRA - compressor A 180.00 A

LRA - compressor B 180.00 A Max Amps 291.00 A

Unit Starting Current 315.00 A Single point power MCA 291.00 A
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Electron Plumber
Associate

Join Date: Feb 2009
Location: Bluegrass Country of Kentucky
Posts: 29
Good Answers: 1
#1

Re: meaning of all

02/25/2009 9:34 AM

Looks like you are looking at some form of Refrigeration. Maybe a chiller or something. The unit voltage is what the system is rated to receive. The system has multiple compressor and fan motors. The largest at some percentage (i.e. 125% plus all the other motors) is the basis for circuit sizing. RLA stands for Running Load Amps. LRA stands for Locked Rotor Amps. Both are important for designing the wire and circuit breaker or fusing requirements for the circuit to feed it. Hope this helps.

__________________
 Joe the Electrical Contractor to the EOR, I know it was suppose to be in my base bid, but I still am going to submit a change order for it.
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