K38 Series Diesel Generator Set, 750-810 kVA, 600-648 kWe Prime

Overview

The sheet covers the K38 range from 750 to 810 kVA and 600 to 648 kWe prime. For a data-center designer the most useful part is the fuel consumption: for the C750D5P rated at 600 kWe prime, 130.42 L/h at 75% load and 165 L/h at 100% load. The values include radiator and fan operation, and the stated consumption tolerance is +5%.

The ratio derived from these two points is instructive: about 0.275 L/kWh at 100% load (600 kWe) against about 0.290 L/kWh at 75% load (450 kWe), so fuel per kWh rises slightly at part load. The 25-point load difference corresponds to a 34.58 L/h consumption difference. These derivations come from the two tabulated points; the sheet does not state that the curve between them is linear.

The specification describes only this model and rating and cannot be carried numerically to other generators. Consumption holds under the stated fuel-property and tolerance conditions. For tank design, usable tank volume and site correction must be handled separately. The related standards are ISO 8528-5 and IS 1460. The record holds only the prime rating and two load points; there is no consumption value at 50% load or in overload, so those ranges cannot be added to the fuel curve from outside.

Key points

1. Range covered: 750 to 810 kVA, 600 to 648 kWe prime.
2. C750D5P at 600 kWe prime: 130.42 L/h at 75% load and 165 L/h at 100% load.
3. Published fuel values include radiator and fan operation.
4. The stated consumption tolerance is +5%.
5. Specific consumption derived from the two points: about 0.275 L/kWh at 100% load, about 0.290 L/kWh at 75%.
6. Related standards: ISO 8528-5, IS 1460.

Using it in design

• Build the fuel curve from the selected model and rating; do not reuse these numbers for other generators.
• Keep interpolation, usable tank volume and site correction as explicit, separate steps.
• When computing fuel runtime, show the +5% tolerance as a separate margin.

Who should read it

Electrical and mechanical designers calculating generator fuel tank size and fuel autonomy.

Related standards

• ISO 8528-5
• IS 1460

Publication details

Authors

Cummins India Limited

Publisher

Cummins India Limited

Year

2020

Document number

PSBU/015/KTA38/HD/MP/Revision-4

Document language

English

Source type

Manufacturer

Access

Free to read

Licence

Copyright retained; citation only — the publisher’s terms apply to the original document

Citation