Operating Load & Installed Capacity Load
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How should operational load and installed capacity be explained? Is the installed load simply the total power of all the motors installed?
The installed capacity should be the sum of the capacities of all loads, while the operating load can be understood as the capacity required. Considering factors such as the distinction between normal and standby loads, as well as the simultaneous factor and demand factor, the capacity required (that is, the operating load) is generally less than the installed capacity. You can look up some design manuals, such as the \"Industrial and Civil Power Distribution Design Manual\", which explains things in great detail.
1. In strict terms, the installed load is the sum of the nameplate capacities of all electrical loads; however, the load of standby circuits that are not operating at the same time must be excluded (in chemical plants, usually 2 units are in operation while 1 is on standby, and it’s almost impossible for all of them to be operating simultaneously, in which case it can be considered as just one unit). 2. The operating load can be simply understood as the calculated load; of course, once the facility starts operating, it refers specifically to the actual operating load.
The installed load is the sum of the rated capacities indicated on the nameplates of all electrical equipment, including standby equipment； The operating load refers to the sum of the rated capacities of all equipment in operation under normal production conditions, excluding the capacity of standby equipment!