B2BEmersonEIMS serves commercial, industrial, healthcare, telecom, hospitality, government & contractor clients.• Engineering-led • SLA-backed • Documented commissioning
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Generator supplier and power solutions provider in South Sudan. Essential backup power for businesses, NGOs, and government institutions.
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Site conditions · Yei, South Sudan
Elevation
836 m
plateau
Design ambient
37 °C
mean max 31.9 °C
Altitude derate
5.4%
output lost to thin air
Combined derate
10.2%
100 kVA ≈ 90 kVA here
Yei carries both penalties: 5.4% from 836 m, and 4.8% from a 37 °C design ambient. Neither dominates, so neither can be engineered away — they stack to 10.2%.
That leaves about 90 kVA of a 100 kVA plate. At 10.2% the honest answer in Yei is the next frame size with a turbocharged engine and an uprated cooling pack — not a bigger radiator on an undersized set.
20.1 °C to 31.9 °C. A 11.8 °C cycle is enough to loosen connections within a year or two in Yei. The intermittent faults that follow get misread as controller trouble; they are almost always a terminal needing re-torquing.
Yei is roughly 919 km north-west of our base at Embakasi, Nairobi, in a straight line and across a border. At 919 km, mobilisation is a real line in any Yei quotation, and a machine waiting on a travelling part waits days, not hours. Hold a critical kit on site — filters, belts, an AVR, injectors — rather than ordering per failure.
Elevation: Open-Meteo Geocoding API (GeoNames elevation), retrieved 2026-08-26. Temperature: Open-Meteo Archive (ERA5 reanalysis), 2025 daily maxima and minima. Derate figures are planning estimates using standard corrections (approximately 1% per 100 m above 300 m; 2% per 5 °C above 25 °C); final sizing follows the engine manufacturer’s own derate tables for the set proposed.
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