Download PDF Print Page E-mail Page
Sizing Calculator

Use our sizing calculator to determine the generator that is right for you and your home.

Learn More

40 kW

Residential Generators / 40ERES

FeaturesSpecificationsOptions
  • 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 60 Hz generator set is UL 2200 listed.
  • The generator set accepts rated load in one step.
  • The 60 Hz generator set engine is certified by the Environmental Protection Agency (EPA) to conform to the New Source Performance Standard (NSPS) for stationary spark-ignited emissions.
  • A one-year limited warranty covers all systems and components. Two- and five-year extended warranties are also available.
  • Quick-ship (QS) models with selected features and a five-year basic warranty are available. See your Kohler distributor for details.

Alternator features:
  • The unique Fast-Response(TM) II excitation system delivers excellent voltage response and short circuit capability using a permanent magnet (PM)-excited alternator.
  • The brushless, rotating-field alterantor has broadrange 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 dripproof construction.
  • Vacuum-impregnated windings with fungus-resistant epoxy varnish for dependability and long life.
  • Superior voltage waveform from a two-thirds pitch stator and skewed rotor.
  • Fast-Response(TM) II brushless alternator with brushless exciter for excellent load response.

Other features:
  • Controllers are available for all applications.
  • The electronic, isochronous governor incorporates an integrated drive-by-wire throttle body actuator delivering precise frequency regulation.
FeaturesSpecificationsOptions
Standby Ratings: 40 kW (50 kVa)
Hertz: 50 Hz
Alternator Type: Brushless, Permanent-Magnet
Engine Manufacturer: General Motors
Engine Model: Industrial Powertrain Vortec 4.3L
Cylinder Arrangement: V-6
Max Power at Rated RPM: 44.8 kWm (60 BHP)
Standby Fuel Consumption at
100% load: 5.4 m³/hr (190 cfh)
75% load: 4.2 m³/hr (148 cfh)
50% load: 3.1 m³/hr (111 cfh)
25% load: 2.3 m³/hr (81 cfh)
FeaturesSpecificationsOptions

Generator Controls

Decision-Maker® 550
Decision-Maker® 3000

Accessories

  • See the specification sheet for available accessories