appendix

Application Manual – Liquid Cooled Generator Sets
Entering Loads
into Steps
RPF Running power factor as entered or default
SkW If kW entered: SkW = kW
If kVA entered: SkW = SkVA x SPF
If Starting amps entered:1∅ SkW = (Ramps x voltage x RPF) ÷ 1000
3∅ SkW = (Ramps x voltage x RPF x 1.73) ÷ 1000
SkVA SkVA = SkW ÷ SPF
SPF SPF = RPF, except for HID where default SPF = 0.85 and RPF = 0.90
PkW PkW = SkW
PkVA PkVA = SkVA
AkW AkW = RkW
Ramps 1∅ Ramps = (RkW x 1000) ÷ (voltage x RPF)
3∅ Ramps = (RkW x 1000) ÷ (voltage x RPF x 1.73)
Figure A–2. GenSize Application Project Window
After entering the loads, you need to enter all of the project loads into Load Steps. Open
the first load step by clicking on the Steps folder on the left of the screen. Note that
initially, there are no loads in the Step. Step sequence loading can reduce the size of
generator set required when using multiple steps. Multiple transfer switches can be used
to connect load to the generator set at different times, simply by adjusting the transfer
time delays on the individual switches. Simply allow a few seconds between steps to
allow the generator set to stabilize with each load step.
To enter individual loads into the step, simply click and drag the load over the step. Once
the load is placed into a step, you can set the load quantity in the step by right clicking
and selecting Set Quantity from the drop down menu. Alternatively, each time you click
and drag a load into the step, the quantity will increase.
A–14 APPENDIX A
Rev. Jan 2011