Phase 3IEC

Generator / DG Sizing Calculator

ISO 8528-1 / BS 7698

Size diesel or gas generators considering running load, motor starting kVA, derating for altitude and ambient temperature, and future growth. Includes fuel consumption estimate.

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Results are for guidance only. All calculations must be verified by a qualified electrical engineer before implementation. Always refer to the applicable local standard and authority having jurisdiction.
Standard:

Load Data

kW

Generator rated at 0.8 pf lagging

kW

Governs starting kVA requirement

%

Site Conditions

m ASL

Derating applied above 1000m (0.4%/100m)

°C

Derating applied above 40°C (0.5%/°C)

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