Kohler 80KW 277/480V 3-Phase Standby Generator Steel New - KG80R-QS4
Reliable power for very large residential or small business needs. Built to weather the storms, hard-working 80 kW KOHLER 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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Commercial‑strength 277/480 V 3‑phase standby power
The Kohler KG80R‑QS4 is engineered to support commercial buildings, large facilities, and critical infrastructure that require dependable three‑phase backup energy with balanced distribution and robust performance.
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Industrial‑grade liquid‑cooled engine
Powered by a Kohler 6.2 L liquid‑cooled engine with hydraulic valve lifters, this unit runs at 1800 RPM for cooler, quieter operation and long service life, delivering reliable standby power without excessive noise or wear.
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Clean, stable power quality
The APM402 controller with ±0.5 % voltage regulation and ultra‑low THD provides clean electrical output that protects sensitive electronics, control systems, and precision equipment even under full load.
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Fast automatic standby response
With Fast‑Response X excitation, the generator can accept rated loads within about 10 seconds of detecting a utility outage, minimizing downtime for operations that cannot afford interruption.
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Rugged steel enclosure with acoustic insulation
Built with a sound‑attenuating steel housing with internal silencer and corrosion‑resistant finish, it operates at around <68 dB @ 7 m, making it suitable for installations near buildings where noise matters.
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Dual fuel flexibility (NG / LP)
Runs on either natural gas or liquid propane with simple field conversion, allowing integration with existing fuel infrastructure and ensuring extended runtime during prolonged outages.
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Pre‑installed block heater for cold starts
The factory‑installed block heater improves cold‑weather start reliability and warm‑up performance—essential for dependable standby readiness across seasons.
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Advanced control & diagnostics
The sophisticated APM402 controller delivers system monitoring, diagnostics, and local display readout, with optional network/serial interfaces for remote monitoring systems.
Q&A
Q: What power output does this generator provide?
A: The Kohler KG80R‑QS4 80KW Standby Generator delivers 80 kW of continuous standby power at 277/480 V three‑phase, ideal for commercial buildings, industrial facilities, and large standby power needs.
Q: What applications is it best suited for?
A: Designed for large commercial, light industrial, and institutional standby applications, it supports motors, HVAC systems, lighting, servers, and essential loads during utility outages.
Q: What fuel types does it support?
A: It runs on natural gas or liquid propane (LP) with simple field conversion while maintaining emissions certification.
Q: What kind of engine and performance features are included?
A: It features a Kohler 6.2 L liquid‑cooled industrial engine with hydraulic valve lifters, advanced APM402 controller, exceptional voltage/frequency regulation, and ultra‑low total harmonic distortion for clean, stable power.
Q: How fast does it restore power?
A: With a compatible automatic transfer switch (sold separately), it can handle full loads and restore power in about ~10 seconds after an outage.
Q: How quiet and durable is the unit?
A: The steel sound‑attenuated enclosure with internal silencer keeps noise around ≈68 dB at 7 m, and the powder‑baked finish resists fading, scratches, and corrosion
Maintenance Tips
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Scheduled Oil & Filter Changes: Change engine oil and filters every 100–200 hours or at least once a year to protect the industrial‑grade, liquid‑cooled engine and extend service life.
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Coolant System Care: Regularly check and maintain coolant level; flush the system as recommended to prevent overheating and maintain efficient engine cooling.
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Controller Diagnostics Monitoring: Use the APM402 controller to monitor performance data, log faults, and plan preventive service.
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Air Intake & Ignition Checks: Inspect and replace air filters and spark plugs routinely for cleaner combustion, reliable starts, and efficient operation.
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Weekly Exercise Runs: Run automatic or manual exercise cycles weekly or bi‑weekly to keep internal components lubricated and ready for outages (prevents condensation & carbon buildup).
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Load Testing: Periodically run the generator under actual or simulated load to ensure stable 277/480 V output and frequency regulation critical for sensitive equipment.
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Fuel System Inspection (NG/LP): Check fuel lines, filters, and pressure regularly to ensure consistent fuel supply and uninterrupted backup power.
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Battery & Electrical Connections: Check battery charge, terminals, and cables; clean and tighten connections to ensure reliable automatic starts.
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Enclosure & Ventilation Care: Keep the steel enclosure clean, free of debris, and ventilated to prevent heat buildup and corrosion.
