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12 kW Generator

Our generators for backup power provide reliability and performance.

When you lose power during an outage or storm, a hard-working 12 kW KOHLER® generator keeps your appliances working, the heat or AC running and your security system on.* OnCue® Plus Generator Management System is standard with every RESV or RESVL generator.
Features
  • PowerBoost™ technology provides power to start large loads such as central air conditioners without dropping power to other appliances
  • Extraordinary peak motor-starting capacity: 12RESV at 16.8kVA at 240V
  • Premium power quality delivers exceptional digital voltage and frequency regulation along with low levels of harmonic distortion to protect sophisticated electronics
  • Powered by reliable KOHLER Series 7000 V-twin engine with efficient OHV design. operation speed is 3600 rpm (the standard for air-cooled generators)
  • Compatible with Programmable Interface Module (PIM) and RXT, RDT and RSB Automatic Transfer Switches
  • Also compatible with Load Control Module (LCM) or Load Shed kit with single-phase generators only
  • RDC2 controller designed for today's sophisticated electronics manages both the generator set and Model RXT transfer switch functions
  • Accepts natural gas fuel pressure as low as 3.5 inches
  • Quiet, neighborhood-friendly operation with sound levels similar to a typical central air conditioner
  • Meets 181 mph wind rating
  • Runs on either natural gas or liquid propane (LPG) with simple switching between natural gas and LPG in the field
  • Streamlined installation, simple terminal block for easy field connections. Kohler also offers concrete mounting pads to lower installation costs and time.

Specifications

Model

  • 12RESV

Rated kW LP

  • 12 kW

Rated kW NG

  • 11 kW

Amps LP

  • 50.0 amps

Amps NG

  • 45.8 amps

Peak Motor Starting kVA at 240 V

  • 20.3 kVa

Alternator Note

  • All information shown is for 1-Phase 60 Hz generator with the largest alternator option available.

Displacement

  • 725 cm³ (44 in³)

Horsepower

  • NG 18 HP, LP 21.4 HP

Enclosure Material

  • Steel

Sound Output During Weekly Exercise

  • 67 dB(A)

Sound Output During Full-Speed Operation

  • 71 dB(A)

Response Time

  • 10 seconds

Warranty

  • Premium Five-Year Limited Warranty

Country of Origin

  • US

Certifications/Listings

  • CSA
  • cUL
  • UL 2200
  • EPA

Automatic Transfer Switch Included

  • Sold Seperately

Remote Monitoring Available

  • Included

Off Grid/Utility Backup

  • Utility Backup

Weight

  • 433 lb (196 kg)

Alternator Type

  • 2-Pole
  • Rotating Field

Fuel Consumption on NG at 50% Load?

  • 128 cfh

Fuel Consumption on LP at 50% Load?

  • 57 cfh

Controller

  • RDC2 Controller

Cylinder Arrangement

  • V-2

Dimensions

  • 777 mm x 712 mm x 824 mm (30.6 in. x 28 in. x 32.4 in.)

Engine Manufacturer/Description

  • KOHLER

Engine Model

  • KT725 1.9L
  • 4-Cycle

Engine/Alternator RPM

  • 3600

Fuel Type

  • Natural Gas
  • LPG

Frequency

  • 60 Hx

Phase

  • Single-phase

Voltage at 60 Hz

  • 120/240

Digital Voltage Regulation

  • ± 1.0 %

Built-In Mounting Pad

  • Yes

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