Historical
NEMA MG 10011-2022
Power Index Calculation Procedure - Standard Rating Methodology for Power Drive Systems and Complete Drive Modules
Establishes the calculation procedure and metric of Power Index (PI) for low voltage (600 V and less) power drive systems (PDS) and complete drive modules (CDM) from 1 to 500 horsepower.
NEMA: National Electrical Manufacturers Association [nema]