Standard 510 Scope
This standard applies to Positive Displacement Ammonia Compressors (Ammonia Compressors) and Compressor Units (Ammonia Compressor Units) for use in commercial and industrial refrigeration applications.

Standard 520 Scope
This standard establishes a single set of testing and rating requirements for determining capacity, power input, and EER for positive displacement condensing units for refrigeration applications; whereby, equipment performance ratings can be compared from product to product. 

Standard 540 Scope
This standard establishes a single set of testing and rating requirements for determining mass flow rate, power input, and efficiency for positive displacement refrigerant compressors and compressor units; whereby, equipment performance ratings can be compared from product to product.