A vessel is equipped with two ship's service generators. Generator No.1 is rated at 900 kW and generator No.2 is rated at 600 kW. During parallel operation, with a hotel load of 1,000 kW, what should be the kW load on generator No.2 if the load is shared proportionately?
• Proportional load sharing between generators of different kW ratings • Total connected hotel load vs each generator’s capacity • Using ratios to divide the total load according to each generator’s rating
• First, find the total generating capacity when both generators are online. How does each generator’s rating compare to that total? • What fraction (or percentage) of the total capacity does the 600 kW generator represent, and what fraction does the 900 kW generator represent? • Once you know the 600 kW generator’s fraction of total capacity, apply that same fraction to the actual 1,000 kW hotel load.
• Confirm the total capacity of both generators combined before dividing the load. • Make sure the sum of the individual loads on each generator equals the 1,000 kW hotel load. • Verify that neither generator’s assigned kW load exceeds its rating (900 kW or 600 kW).
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