550REOZVB Industrial – Kohler® Diesel Generator


  • KOHLER Co. provides one-source responsibility for the generating system and accessories.
  • The generator set and its components are prototype-tested, factory-built, and production-tested.
  • The generator set accepts rated load in one step.
  • The 60 Hz generator set meets NFPA 110, Level 1, when equipped with the necessary accessories and installed per NFPA standards.
  • A one-year limited warranty covers all systems and components. Two-, five-, and ten-year extended warranties are also available.

Alternator Features:

  • The pilot-excited, permanent-magnet (PM) alternator provides superior short-circuit capability.
  • The brushless, rotating-field alternator has broad range reconnectability.
  • NEMA MG1, IEEE, and ANSI standards compliance for temperature rise and motor starting.
  • Sustained short-circuit current of up to 300% of the rated current for up to 10 seconds.
  • Sustained short-circuit current enabling down stream circuit breakers to trip without collapsing the alternator field.
  • Self-ventilated and drip-proof construction.
  • Superior voltage waveform from a two-thirds pitch stator and skewed rotor.
  • Digital solid-state, volts-per-hertz voltage regulator with ±0.25% no-load to full-load regulation.
  • Brushless alternator with brushless pilot exciter for excellent load response.

Other Features:

  • Controllers are available for all applications.
  • The low coolant level shutdown prevents overheating (standard on radiator models only).
  • Integral vibration isolation eliminates the need for under-unit vibration spring isolators.
  • An electronic, isochronous governor delivers precise frequency regulation.
  • Multiple circuit breaker configurations.

Prime Ratings:
500 kW (625 kVa)
Standby Ratings:
550 kW (688 kVa)
60 Hz
Alternator Type:
Brushless, Permanent-Magnet, Pilot Exciter
EPA Tier Level:
Engine Manufacturer:
Engine Model:
Cylinder Arrangement:
6 Inline
Max Power at Rated RPM:
604 kWm (810 BHP)
Prime Fuel Consumption at
100% load:
136.0 Lph (35.9 gph)
75% load:
98.6 Lph (26.0 gph)
50% load:
66.4 Lph (17.5 gph)
25% load:
36.9 Lph (9.8 gph)
Standby Fuel Consumption at
100% load:
151.2 Lph (39.9 gph)
75% load:
109.1 Lph (28.8 gph)
50% load:
72.4 Lph (19.1 gph)
25% load:
39.2 Lph (10.4 gph)
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