Smart Electrical calculates bus load summaries according to the preferences that you set on the Load Summaries and Reports tab of the Preferences dialog. The options are as follows:
Use each load coincidence factor
Uses the coincidence factor of each individual load to calculate the total connected loads on the bus. When calculating the compensated load values, the software multiplies the raw uncompensated load kW and kVAR values by the load coincidence factors.
Use Bus PDB coincidence factor
Uses the coincidence factor of the PDB bus to calculate the total connected loads on the bus. When calculating the compensated load values, the software multiplies the raw uncompensated load kW and kVAR values by the coincidence factors as defined in the properties of the buses that these loads are connected to. Make sure that you specify these coincidence factors for each bus.
Calculate according to the largest non-continuous load
Instructs the software to calculate the total normal running and peak loading according to the largest non-continuous load connected to the current bus. For details, see Calculate Bus Loading According to the Largest Non-Continuous Load.
Do not include coupled buses
When calculating bus totals, the software ignores adjacent coupled buses (regardless of whether they are connected via couplers or risers). The software does not take into account these adjacent buses and treats them as if they are disconnected.
Include coupled buses connected by couplers only
When calculating bus totals, the software includes adjacent bus loads connected via couplers and excludes the buses connected via risers.
Include coupled buses connected by couplers and risers
When calculating bus totals, the software includes adjacent bus loads connected via couplers and risers (full redundancy).
Account for converting equipment power losses
When running bus load calculations, allows you to instruct the software to calculate the total electrical consumption taking into account converting equipment power losses. The software adds these power losses to the upstream feeding circuits and bus and takes them into account as continuous loads. The same losses are also taken into account in the All Feeder Load Summary and PDB Load Summary reports.
Disconnected Circuits
If the mode of a circuit is set to Disconnected, Smart Electrical ignores this circuit in the calculation regardless of the preference settings.
For examples of Smart Electrical Bus Load Configurations see Bus Load Configuration Examples and Introduction.