Kohler 100KW 120/208V 3-Phase Standby Generator Aluminum New - KG100R-QS5
Reliable power for very large residential or small business needs. Built to weather the storms, our largest natural gas/liquid propane generators with industrial-grade engines keep your family comfortable and your business running when a utility failure or storm knocks out power
What our Experts Think
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True commercial standby power (100 kW output)
Built for 120/208 V 3‑phase systems, this generator is engineered to support large commercial buildings, data centers, heavy electrical loads, or large residential service panels that demand consistent three‑phase backup.
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Industrial‑grade liquid‑cooled performance
Powered by a Kohler 6.2 L liquid‑cooled turbocharged engine with hydraulic valve lifters, delivering durable, quieter, and fuel‑efficient operation at 1800 RPM.
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Clean, stable power quality for sensitive loads
Advanced APM402 controller with ±0.5 % voltage regulation and low harmonic distortion ensures clean power—protecting sensitive electronics, servers, and precision equipment even under heavy loads.
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Fast automatic response (≈10 sec)
The Fast‑Response® excitation system brings the generator up to full load quickly during outages, reducing downtime for critical operations.
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Rugged aluminum enclosure with weather resilience
Sound‑attenuating aluminum housing with up to 186 mph wind load rating and corrosion‑resistant finish makes it suitable for outdoor installations in severe weather.
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Pre‑installed block heater
Improves cold‑start reliability and warm‑up times, key for standby readiness in varying climates.
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Remote monitoring capable (optional)
The APM402 controller supports advanced monitoring and diagnostics, including remote communication with network/serial interfaces when paired with optional systems.
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Dual‑fuel flexibility (natural gas & LP)
Runs on both natural gas and liquid propane with simple field conversion, offering fuel flexibility and operational continuity.
Q&A
Q: What power capacity does this generator provide?
A: It delivers 100 kW of continuous standby power at 120/208 V three‑phase, ideal for large commercial buildings and mission‑critical backup applications.
Q: What type of facilities is it best suited for?
A: Designed for commercial, institutional, and large residential 3‑phase systems, providing reliable backup for HVAC, lighting, servers, and other essential loads during outages.
Q: What fuel options are supported?
A: Runs on natural gas or liquid propane (LP) with simple field conversion while maintaining emissions certification.
Q: What engine and control features does it include?
A: Equipped with an industrial‑grade Kohler 6.2 L liquid‑cooled engine and advanced APM402 digital controller for voltage/frequency regulation, diagnostics, and remote monitoring.
Q: How fast can it restore power?
A: It can handle full electrical loads and restore power within ≈10 seconds when matched with an automatic transfer switch (sold separately).
Q: How clean and stable is the output?
A: Provides exceptional voltage & frequency regulation with ultra‑low total harmonic distortion, safe for sensitive electronics and critical equipment.
Q: How quiet and durable is the unit?
A: The aluminum sound‑attenuated enclosure with 186 mph wind rating and acoustic insulation keeps noise low (~69 dB at 7 m) and resists corrosion and weather.
Maintenance Tips
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Regular Oil & Filter Changes: Change engine oil and filters every 100–200 hours or annually to protect the industrial liquid‑cooled engine and reduce wear.
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Coolant System Maintenance: Check coolant levels regularly and flush the cooling system as recommended to prevent overheating of the liquid‑cooled engine.
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Monitor Controller & Diagnostics: Use the APM402 controller’s diagnostics to track performance, log faults, and schedule preventive service.
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Air Filter & Ignition Checks: Inspect and replace air filters and spark plugs routinely for efficient combustion, clean starts, and fuel economy.
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Weekly Exercise Runs: Run automatic weekly exercise cycles to keep engine components lubricated and the generator ready for outages.
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Load Testing: Periodically run under load to confirm stable voltage and frequency output for sensitive electronics and peak performance.
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Fuel System Inspection (NG/LP): Ensure clean supply lines and consistent fuel pressure for uninterrupted backup power.
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Battery & Electrical Connections: Check battery charge, cables, and terminals; clean and tighten for reliable automatic starts.
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Enclosure Care: Keep the aluminum enclosure clean and clear of debris to promote airflow and prevent corrosion.
