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Kohler 90REOZT4 Generator (85kW)

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6,965.00 LBS

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The Kohler 90REOZT4 mobile diesel generator offers up to 85 kW of single/three phase power at a quiet 69 dBA.


Generator Features

  • The unique Fast-Response X excitation system delivers excellent voltage response and short-circuit capability using a rare-earth, permanent magnet (PM)-excited alternator
  • Sustained short-circuit current of up to 300% of the rated current for up to 10 seconds.
  • Sustained short-circuit current enabling downstream circuit breakers to trip without collapsing the alternator field.
  • Self-ventilated and drip-proof construction.
  • Windings are vacuum-impregnated with epoxy varnish for dependability and long life.
  • Superior voltage waveform from a two-thirds pitch stator and skewed rotor.
  • Unit-mounted radiator with 50C (122F) ambient air capability with prime rating.
  • NEMA MG1, IEEE, and ANSI standards compliance for temperature rise and motor starting.

Engine Features

  • John Deere diesel 4.5L 4-cycle turbocharged engine.
  • Lockable battery disconnect switch.
  • Battery, battery rack, and cables included.
  • Heavy-duty air cleaner with air restrictor indicator.
  • Engine oil and coolant added.
  • 125% environmental containment basin for oil and coolant.
  • Oil drain extension.

Decision-Maker 3500 Controller Features

  • Provides advanced control, system monitoring, and system diagnostics for optimum performance and compatibility.
  • Digital display with adjustable contrast and menu control provide easy local data access.
  • Remote communication thru a PC via network or serial configuration.
  • Controller supports Modbus protocol.
  • Integrated hybrid voltage regulator with +/-0.5% regulation.
  • Potted circuitry for protection from vibration and debris.
  • Built-in alternator thermal overload protection.
  • NFPA 110 Level 1 capability.
  • Security cover.

Customer Connection Panel Features

  • Emergency stop switch.
  • Remote start connection.
  • 120V 15A Shore power connectors for battery charger(s), battery heater, and block heater.
  • Field adjustable 400A main line circuit breaker. (Field adjustable 150A main line circuit breaker with 600V option).
  • Load Lug Connections: 1 load lug per phase, #6-350MCM, 400A rating.
  • Receptacle and cam-lock options (see below).

Enclosure Features

  • Durable steel, sound-attenuating housing with quiet operation of 69 dB(A) @ 7 m (23 ft.) with full load at the prime rating.
  • Stainless steel hinges and lockable latches on doors.
  • Single-point lifting eye and four-point tie down system.
  • Fuel fill and Diesel Exhaust Fluid (DEF) fill with lockable caps.

Fuel Tank Features

  • Sub-base 192 gallon fuel tank for minimum of 24-hour runtime at full load.
  • Includes the fuel level gauge, fuel fill with lockable cap, and an atmospheric vent.
  • 110% secondary containment tank.
  • Emergency relief vents in primary inner tank and secondary outer tank.

Trailer Features

  • Dual-axle trailer with electric brake system and battery back-up breakaway system.
  • DOT and TC (Transport Canada) compliant per current specifications published by both agencies, at the time of trailer manufacture.
  • 2 5/16" ball hitch coupler (optional Lunette eye available).
  • Lockable utility tool box with bottle jack, lug wrench, and fire extinguisher. Common key to enclosure.
  • Running lights with 7-wire harness and connector.
  • Front tongue jack.
  • Rear stabilizer trailer jacks.
  • Weight bearing fenders up to 227 kg (500 lbs.).


90REOZT4 Spec Sheet

90REOZT4 Drawing

90REOZT4 Generator Manual

90REOZT4 Engine Manual

OPTIONS (Order with Genertor)

Voltage Options

  • Three-Position Lockable Voltage Selector Switch Option (1Ph 120/040V, 3Ph 120/208V, and 3Ph 277/480V). Includes standard camlock connections and convenience receptacles.
  • Single Voltage Reconnectable Option (1Ph 120/040V, 3Ph 120/208V, 3Ph 120/240V, or 3Ph 277/480V).
  • Single Voltage Stand-Alone Option (3Ph 347/600V).

Multi-Voltage Quick-Ship Option

  • Three-Position Lockable Voltage Selector Switch: 1Ph 120/040V, 3Ph 120/208V, and 3Ph 277/480V
  • Convenience Receptacles: Two 15A 120V GFCI duplex receptacles and Three 50A 240V twistlock receptacles (with individual circuit breakers)
  • Color-Coded Camlock Load Connections
  • Battery Charger
  • Cold Weather Package (includes block heater and battery heater pad/wrap)
  • Two-Way Fuel Valve (to connect a customer-supplied second fuel tank for extended runtimes)
  • Spare Tire

Generator Options

  • Color-Coded Camlock Load Connections
  • Battery Charger
  • Cold Weather Package (includes block heater and battery heater pad/wrap)
  • Two-Way Fuel Valve (to connect a customer-supplied second fuel tank for extended runtimes)
  • Mobile Paralleling Box
  • 15 Relay Dry Contact
  • Spark Arrestor Kit
  • CSA Certified

Trailer Options

  • Spare Tire
  • Lunette Eye
  • Wheel Chocks
  • Field Draggable Skid (no trailer)
Standby Power:
3Ph: 85kW/106kVA; 1Ph: 78kW/78kVA
Prime/Continuous Power:
3Ph: 76kW/95kVA; 1Ph: 70kW/70kVA
Amperage - 3 Phase (Prime):
263A @ 120/208V, 228A @ 120/240V, 114A @ 277/480V, 91A @ 347/600V
Amperage - 1 Phase (Prime):
291A @ 120/240V
Voltage Options - 3 Phase:
120/208, 120/240, or 277/480 (12-Lead Reconnectable), Optional 347/600 also available (6-Lead)
Voltage Option - 1 Phase:
Optional Voltage Selector Switch:
1Ph 120/240V, 3Ph 120/208, & 3Ph 277/480V
Voltage Regulation:
+/- 0.5%
Frequency Regulation:
+/- 0.5%
Power Factor:
3Ph: 0.8, 1Ph: 1.0
Kohler, 4-pole, Rotating field, Self-ventilated, Drip-proof, Brushless, Single bearing, Brushless, Class H
Receptacles (Single Phase):
Optional (See Options)
Sound Level:
69 dBA
John Deere 4045HFG04, 4-cylinder, 4-cycle, Turbocharged, 4.5L, 106 x 127 Bore x Stroke, 133 hp, 1800 rpm, Electronic Governor
Engine Starting System:
Fuel / Fuel Tank:
Diesel / 192 gallons
24 hour
EPA Tier 4 Final
Dimensions LxWxH (inches):
187.9 x 79.4x 105.6 (w/ Trailer)
5350 lb. (w/o fuel)
Generator Warranty:
3 years / 3000 hours
Trailer Warranty:
1 year
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