Used generator set FAQ

What is the difference between prime, continuous and standby rating?

Standby rating is for emergency use when the grid fails, with limited running hours per year. Prime rating allows unlimited hours at variable load. Continuous rating allows unlimited hours at constant full load. Always compare generator sets at the same rating, because the same set has a different kW value for each.

Gas engine or diesel generator set: which fits better?

Gas engine sets suit continuous operation where pipeline gas, biogas or associated gas is available, and they produce lower emissions. Diesel sets start fast and run on stored fuel, so they are common for standby, remote sites and islands. The choice depends on fuel, running hours, emissions and site.

What is the difference between high speed and medium speed engines?

High speed engines, for example the Caterpillar 3516, MTU 4000 series or Cummins QSK, are compact and quick to install. Medium speed engines, for example the Wartsila 34SG, MAN 32/40 or Caterpillar G20CM34, are larger and heavier, run at lower speed and are built for long continuous operation in power plants.

Can a 50 Hz generator set be used in a 60 Hz grid?

Usually only after changes. Engine speed and generator are matched to one frequency, so a 50 Hz set often needs a different generator or speed setting, and the output changes. Check the nameplate data and ask the owner before making an offer.

Which manufacturers build the generator sets traded used?

Common makes are Caterpillar, Cummins, MTU (Rolls Royce Power Systems), Wartsila, MAN Energy Solutions, INNIO Jenbacher, MWM, Kohler and Perkins.

Which documents should a buyer ask for?

Running hours, the overhaul history with dates and hours, oil analysis reports, load test records, the scope of supply (engine, generator, switchgear, radiators, controls, container) and the generator data. Full documents are normally released after a letter of intent.

What determines the price of a used generator set?

Make and model, output and rating, running hours since new and since the last overhaul, condition, scope of supply, fuel and frequency, emission equipment, and the cost of dismantling and transport from its location.

How is a used generator set bought and paid?

The buyer sends a letter of intent, receives the full data and inspects the set, then signs the purchase contract with the owner. Payment runs through an escrow agent or an irrevocable letter of credit. LKS 360-SCHREINER LLC never receives purchase payments.

Where can I buy a used generator set?

LKS 360-SCHREINER LLC is an independent broker and lists gas and diesel generator sets on behalf of their owners at lks360.com/generator-sets.html

How do I sell a used generator set or engine power plant?

Collect make, model, output, hours, condition, scope and your price idea. LKS 360-SCHREINER LLC offers owners an exclusive sales mandate with one price in the market, screened buyers and no upfront fee: lks360.com/sell.html

More detail: buyer guide, gas turbine FAQ, steam turbine FAQ, generator set FAQ, glossary, how we work, inventory.