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Perkins vs FG Wilson 500kVA Generator in Nigeria

At 500kVA a generator delivers about 400 kW of real power and draws a full-load current of about 696 A per phase at 415 V. Both Perkins and FG Wilson are offered in this size.

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Industrial diesel generator set in an outdoor enclosure

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Because the price swing at this size is large, ask each supplier for the engine, alternator and canopy specification so the quotes can be compared fairly.

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Capacity in kVA, and prime power or standby duty
Open set, soundproof canopy or containerised
Preferred engine brand
New or fairly used, and quantity
Delivery location and required date

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500kVA Reference Figures

About 400 kW of real power at 0.8 power factor
About 696 A per phase at 415 V three-phase
About 78 litres of diesel per hour at 75% load, as a planning figure

Perkins at 500kVA

Sets around 500 kVA commonly use a six-cylinder turbocharged Perkins engine from the 2000 series, though models vary by supplier.
A very large installed base in Nigeria, so workshops and mechanics know the engines well
Because the name is so common, look-alike and low-grade parts are easy to find, so insist on parts you can trace to a supplier

FG Wilson at 500kVA

Sets around 500 kVA are typically built around a large Perkins engine, though models vary.
A well-known brand with a long history of use across Nigerian businesses and institutions
New sets are priced at a premium over many alternatives, so compare like-for-like specifications

How to Compare Quotes Fairly

Ask for the engine make and model, and the alternator make and model, in writing
Check the duty rating: prime, standby or continuous
Compare canopy specification and control panel type, not only the headline kVA
Compare warranty length, what it covers and who honours it in your state
Ask for the current delivery time and what happens if the date is missed

Frequently Asked Questions

Is a Perkins or FG Wilson 500kVA generator cheaper to run?

Fuel use at this size is similar for any well-matched set, about 78 litres per hour at 75% load. Running cost differences come mostly from servicing, parts and downtime.