Split units with multicompressor

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Hi All,
I have ductable packaged split units with multiple compressors
now these units dont have variable control like VRV units where compressor
hp varies with rpm as per the load variation.

But they also contribute to enery savings in compressor in the sence that
they have 3 compressors each 10hp motor and when the load comes down one
compressor is off when load further comes down second compressor is also
off. ie they enery saving is contributed by compressor on/off not VFD in
compressor.

How can i model this to claim savings in equest .

Thanks
Sambhav

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