Compare Products

Generac 48kW Protector
Generac 48kW Protector

Specs

General Information

Manufacturer
Generac
Generac
Model
48kW Protector
48kW Protector
Model Code
RG04845
RG04845
Color
Bisque
Bisque

Engine

Engine Make
Generac
Generac
Fuel Type
Natural gas, Propane vapor
Natural gas, Propane vapor
Oil Capacity

Crankcase - 12 qt. (11 l)

Oil pump type - Gear

Oil filter type - Full flow spin-on cartridge

Crankcase - 12 qt. (11 l)

Oil pump type - Gear

Oil filter type - Full flow spin-on cartridge

Bore x Stroke
4.5 x 4.25 in. (114.3 x 107.95 mm)
4.5 x 4.25 in. (114.3 x 107.95 mm)
Compression Ratio
9.9:1
9.9:1
Alternator

Type - Synchronous

Rotor insulation class - F

Stator insulation class - H

Telephone Interference Factor (TIF) - < 50

Output leads 1-phase - 4 wire

Output leads 3-phase - 6 wire

Bearings - Sealed ball

Coupling - Flexible disc

Excitation system - Direct

Type - Synchronous

Rotor insulation class - F

Stator insulation class - H

Telephone Interference Factor (TIF) - < 50

Output leads 1-phase - 4 wire

Output leads 3-phase - 6 wire

Bearings - Sealed ball

Coupling - Flexible disc

Excitation system - Direct

Displacement
4,500 cc (4.5 l)
4,500 cc (4.5 l)
Fuel Consumption

Exercise cycle (Natural Gas) - 101 ft³ / hr. (2.86 m³ / hr.)

Exercise cycle (Propane) - 0.67 gal. / hr. (2.54 l / hr.) [24.5 ft³ / hr.]

25% of rated load (Natural Gas) - 201 ft³ / hr. (5.7 m³ / hr.)

25% of rated load (Propane) - 2.88 gal. / hr. (10.9 l / hr.) [104.7 ft³ / hr.]

50% of rated load (Natural Gas) - 336 ft³ / hr. (9.5 m³ / hr.)

50% of rated load (Propane) - 4.16 gal. / hr. (15.7 l / hr.) [151.3 ft³ / hr.]

75% of rated load (Natural Gas) - 447 ft³ / hr. (12.7 m³ / hr.)

75% of rated load (Propane) - 5.28 gal. / hr. (20 l / hr.) [192 ft³ / hr.]

100% of rated load (Natural Gas) - 604 ft³ / hr. (17.1 m³ / hr.)

100% of rated load (Propane) - 6.61 gal. / hr. (25 l / hr.) [240.4 ft³ / hr.]

Exercise cycle (Natural Gas) - 101 ft³ / hr. (2.86 m³ / hr.)

Exercise cycle (Propane) - 0.67 gal. / hr. (2.54 l / hr.) [24.5 ft³ / hr.]

25% of rated load (Natural Gas) - 201 ft³ / hr. (5.7 m³ / hr.)

25% of rated load (Propane) - 2.88 gal. / hr. (10.9 l / hr.) [104.7 ft³ / hr.]

50% of rated load (Natural Gas) - 336 ft³ / hr. (9.5 m³ / hr.)

50% of rated load (Propane) - 4.16 gal. / hr. (15.7 l / hr.) [151.3 ft³ / hr.]

75% of rated load (Natural Gas) - 447 ft³ / hr. (12.7 m³ / hr.)

75% of rated load (Propane) - 5.28 gal. / hr. (20 l / hr.) [192 ft³ / hr.]

100% of rated load (Natural Gas) - 604 ft³ / hr. (17.1 m³ / hr.)

100% of rated load (Propane) - 6.61 gal. / hr. (25 l / hr.) [240.4 ft³ / hr.]

Battery

Not included

Charge Alternator - 12 V 35 A

Static charger - 2.5 A

Recommended - Group 27F

System voltage - 12 V

Not included

Charge Alternator - 12 V 35 A

Static charger - 2.5 A

Recommended - Group 27F

System voltage - 12 V

Cooling

Liquid

Type - Ethylene glycol 50 / 50 mix

System coolant capacity - 2.9 gal. (11 l)

Water pump - Belt driven

Fan speed - 2,100 rpm

Fan diameter - 20 in. (50.8 cm)

Fan mode - Pusher

Liquid

Type - Ethylene glycol 50 / 50 mix

System coolant capacity - 2.9 gal. (11 l)

Water pump - Belt driven

Fan speed - 2,100 rpm

Fan diameter - 20 in. (50.8 cm)

Fan mode - Pusher

Engine Model
Inline 4 cylinder
Inline 4 cylinder

Measurements

Weight
Shipping - 859 lb. (1,893 kg)
Shipping - 859 lb. (1,893 kg)
Height
Overall - 46 in. (1,168 mm)
Overall - 46 in. (1,168 mm)
Width
Overall - 35 in. (888 mm)
Overall - 35 in. (888 mm)
Length
Overall - 83.4 in. (2,119 mm)
Overall - 83.4 in. (2,119 mm)

Operational

AC Frequency
60 Hz
60 Hz
Noise Level

Sound output in 68 dB(A) @ 23 ft. (7 m) with generator in exercise mode

(*In exercise mode)

Sound output in 68 dB(A) @ 23 ft. (7 m) with generator in exercise mode

(*In exercise mode)

Maximum Temperature

Maximum operation air temperature on radiator - 150 °F (66 °C)

Ambient - 140 °F (60 °C)

Maximum operation air temperature on radiator - 150 °F (66 °C)

Ambient - 140 °F (60 °C)

DC Output

120 / 240 V, 1Ø, 1.0 pf (LPG / NG) - 48 kW, 200 A, 200 CB

120 / 208 V, 3Ø, 0.8 pf (LPG / NG) - 48 kW, 167 A, 175 CB

120 / 240 V, 3Ø, 0.8 pf (LPG / NG) - 48 kW, 144 A, 150 CB

277 / 480 V, 3Ø, 0.8 pf (LPG / NG) - 48 kW, 72 A, 80 CB

120 / 240 V, 1Ø, 1.0 pf (LPG / NG) - 48 kW, 200 A, 200 CB

120 / 208 V, 3Ø, 0.8 pf (LPG / NG) - 48 kW, 167 A, 175 CB

120 / 240 V, 3Ø, 0.8 pf (LPG / NG) - 48 kW, 144 A, 150 CB

277 / 480 V, 3Ø, 0.8 pf (LPG / NG) - 48 kW, 72 A, 80 CB

DC Voltage

Regulation type - Electronic

Regulation sensing - Single phase

Regulation - ± 1%

Regulation type - Electronic

Regulation sensing - Single phase

Regulation - ± 1%

Instrumentation
2 line LCD multilingual digital Evolution™ controller (English / Spanish / French / Portuguese) with external viewing window
2 line LCD multilingual digital Evolution™ controller (English / Spanish / French / Portuguese) with external viewing window

Other

Warranty
5 year limited
5 year limited

Features

Enclosure

  • ALUMINUM WEATHER PROTECTIVE ENCLOSURE: Ensures protection against mother nature. Electrostatically applied textured epoxy paint for added durability.
  • ENCLOSED CRITICAL GRADE MUFFLER: Quiet, critical grade muffler is mounted inside the unit to prevent injuries.
  • SMALL, COMPACT, ATTRACTIVE: Makes for an easy, eye appealing installation.
  • SAE: Sound attenuated enclosure ensures quiet operation.

Features

  • GENERAC DESIGNED & BUILT ENGINE – GENERAC DESIGNED & BUILT ENGINE: Purpose-built exclusively for generators, in Wisconsin, USA*. Utilizes the first in class, dual-valve ultra-low pressure fuel delivery system and intelligent proprietary engine controls that manage over 100 performance functions to ensure peak efficiency in all temperature ranges and elevations. The engine consumes 25% less fuel than previous engines, is capable of operating at the lowest fuel pressure in the industry at 3.5” of water column while still providing excellent motor starting capability. (*Assembled in the USA using domestic and foreign parts.)
  • TRUE POWER™ TECHNOLOGY: Delivers utility-grade power quality with less than 5% total harmonic distortion (THD) for clean, smooth operation of sensitive electronics and appliances. Generac controlling its high-efficiency alternator design and production insures industry-leading surge protection, performance, and longevity.
  • SMALL FOOTPRINT: Generac liquid-cooled product packs more power into the smallest footprint – ideal when space is a premium. The neutral styling, color and small footprint fits unobtrusively into landscaping.
  • SMART, USER-FRIENDLY CONTROLS: Generac’s Evolution™ Controller is visible and accessible without opening the generator enclosure. The Evolution Controller features a multilingual LCD display that allows users to monitor and track maintenance intervals to ensure your generator is always in top operating condition.
  • 18” OFFSET - GENERATORS CAN BE INSTALLED JUST 18” FROM A STRUCTURE: Ideal for tight lot lines or other space constraints.
  • TOUGH, DURABLE ALL-ALUMINUM ENCLOSURES: Our RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions. Protector units are shielded from the inside out - a durable coating protects the internal frame from rust.
  • QUIET-TEST™ SELF-TEST MODE: Runs at a lower, quieter RPM for a five or twelve minute test, to ensure the system is running properly while consuming less fuel. Quiet-Test Self-Test mode can be programmed to run weekly, bi-weekly, or monthly.
  • MOBILE LINK™ CONNECTIVITY: Allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet or PC. Easily access information such as the current operating status and the generator's maintenance schedule.
  • 5-YEAR LIMITED WARRANTY: For automatic standby generators. Extended warranty options available.
  • INNOVATIVE DESIGN & PROTOTYPE TESTING: are key components of GENERAC’S success in “IMPROVING POWER BY DESIGN.” But it doesn’t stop there. Total commitment to component testing, reliability testing, environmental testing, destruction and life testing, plus testing to applicable CSA, NEMA, EGSA, and other standards, allows you to choose GENERAC POWER SYSTEMS with the confidence that these systems will provide superior performance.
  • TEST CRITERIA:: Prototype tested, NEMA MG1-22 evaluation, System torsional tested, Motor starting ability
  • SOLID-STATE, FREQUENCY COMPENSATED VOLTAGE REGULATION: This state-of-the-art power maximizing regulation system is standard on all Generac models. It provides optimized FAST RESPONSE to changing load conditions and MAXIMUM MOTOR STARTING CAPABILITY by electronically torque-matching the surge loads to the engine. Digital voltage regulation at ±1%.
  • SINGLE SOURCE SERVICE RESPONSE: From Generac’s extensive dealer network provides parts and service know-how for the entire unit, from the engine to the smallest electronic component.
  • GENERAC TRANFER SWITCHES.: Long life and reliability are synonymous with GENERAC POWER SYSTEMS. One reason for this confidence is the GENERAC product line is offered with its own transfer systems and controls for total system compatibility.
  • Intake air system - Naturally aspirated
  • Lifter type - Hydraulic
  • Fuel shut off solenoid - Standard
  • LP fuel pressure - 7 - 14 in. water column
  • NG fuel pressure - 3.5 - 14 in. water column
  • Governor type - Electronic
  • Governor frequency regulation - Isochronous
  • Governor steady state regulation - ± 0.25%
  • Air flow (inlet air including alternator and combustion air - 2,829 cfm (80.1 cmm)
  • Heat rejection to coolant - 201,600 BTU / hr.
  • Flow at rated power - 92.7 scfm (2.6 cmm)
  • Exhaust flow at rated output - 104 scfm (2.9 cmm)
  • Exhaust temperature at muffler outlet - 945 °C (507 °F)
  • Rated synchronous - 1,800 rpm
  • Temperature deration - 3% for every 10 °C above 25 °C or 1.65% for every 10 °F above 77 °F
  • Altitude deration - 1% for every 100 m above 183 m or 3% for every 1,000 ft. above 600 ft.
  • Two-line plain text LCD display - Simple user interface for ease of operation.
  • Auto mode switch - Automatic start on utility failure. 7 day exerciser.
  • Off mode switch - Stops unit. Power is removed. Control and charger still operate.
  • Manual mode switch - Start with starter control, unit stays on. If utility fails, transfer to load takes place.
  • Programmable start delay between 10 - 30 seconds - 10 sec standard
  • Engine start sequence - cyclic cranking: 16 sec on, 7 rest (90 sec maximum duration)
  • Engine warm-up - 5 sec
  • Engine cool-down - 1 min
  • Starter lock-out - Starter cannot re-engage until 5 sec after engine has stopped.
  • Overspeed shutdown - Standard, 72 Hz
  • Smart battery charger, Automatic voltage regulation with over and under voltage protection, Automatic low oil pressure shutdown, High temperature shutdown, Overcrank protection, Safety fused, Failure to transfer protection, Low battery protection, 50 event run log, Future set capable exerciser, Incorrect wiring protection, Internal fault protection, Common external fault capability, Governor failure protection
  • Closed coolant recovery system.
  • UV / Ozone resistant hoses
  • Field convertible fuel type with no mechanical adjustment required.
  • UL 2200 Listed
  • Listed and labeled by the Southwest Research Institute allowing installation as close as 18 in. (457 mm) to a structure*. *Must be located away from doors, windows, and fresh air intakes and in accordance with local codes.

Generator

  • Revolving field heavy duty generator.
  • Directly connected to the engine.
  • Operating temperature rise 120 °C above a 40 °C ambient.
  • Class H insulation is NEMA rated
  • Class F insulation is NEMA rated
  • All models fully prototyped tested.

Enclosure

  • ALUMINUM WEATHER PROTECTIVE ENCLOSURE: Ensures protection against mother nature. Electrostatically applied textured epoxy paint for added durability.
  • ENCLOSED CRITICAL GRADE MUFFLER: Quiet, critical grade muffler is mounted inside the unit to prevent injuries.
  • SMALL, COMPACT, ATTRACTIVE: Makes for an easy, eye appealing installation.
  • SAE: Sound attenuated enclosure ensures quiet operation.

Features

  • GENERAC DESIGNED & BUILT ENGINE – GENERAC DESIGNED & BUILT ENGINE: Purpose-built exclusively for generators, in Wisconsin, USA*. Utilizes the first in class, dual-valve ultra-low pressure fuel delivery system and intelligent proprietary engine controls that manage over 100 performance functions to ensure peak efficiency in all temperature ranges and elevations. The engine consumes 25% less fuel than previous engines, is capable of operating at the lowest fuel pressure in the industry at 3.5” of water column while still providing excellent motor starting capability. (*Assembled in the USA using domestic and foreign parts.)
  • TRUE POWER™ TECHNOLOGY: Delivers utility-grade power quality with less than 5% total harmonic distortion (THD) for clean, smooth operation of sensitive electronics and appliances. Generac controlling its high-efficiency alternator design and production insures industry-leading surge protection, performance, and longevity.
  • SMALL FOOTPRINT: Generac liquid-cooled product packs more power into the smallest footprint – ideal when space is a premium. The neutral styling, color and small footprint fits unobtrusively into landscaping.
  • SMART, USER-FRIENDLY CONTROLS: Generac’s Evolution™ Controller is visible and accessible without opening the generator enclosure. The Evolution Controller features a multilingual LCD display that allows users to monitor and track maintenance intervals to ensure your generator is always in top operating condition.
  • 18” OFFSET - GENERATORS CAN BE INSTALLED JUST 18” FROM A STRUCTURE: Ideal for tight lot lines or other space constraints.
  • TOUGH, DURABLE ALL-ALUMINUM ENCLOSURES: Our RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions. Protector units are shielded from the inside out - a durable coating protects the internal frame from rust.
  • QUIET-TEST™ SELF-TEST MODE: Runs at a lower, quieter RPM for a five or twelve minute test, to ensure the system is running properly while consuming less fuel. Quiet-Test Self-Test mode can be programmed to run weekly, bi-weekly, or monthly.
  • MOBILE LINK™ CONNECTIVITY: Allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet or PC. Easily access information such as the current operating status and the generator's maintenance schedule.
  • 5-YEAR LIMITED WARRANTY: For automatic standby generators. Extended warranty options available.
  • INNOVATIVE DESIGN & PROTOTYPE TESTING: are key components of GENERAC’S success in “IMPROVING POWER BY DESIGN.” But it doesn’t stop there. Total commitment to component testing, reliability testing, environmental testing, destruction and life testing, plus testing to applicable CSA, NEMA, EGSA, and other standards, allows you to choose GENERAC POWER SYSTEMS with the confidence that these systems will provide superior performance.
  • TEST CRITERIA:: Prototype tested, NEMA MG1-22 evaluation, System torsional tested, Motor starting ability
  • SOLID-STATE, FREQUENCY COMPENSATED VOLTAGE REGULATION: This state-of-the-art power maximizing regulation system is standard on all Generac models. It provides optimized FAST RESPONSE to changing load conditions and MAXIMUM MOTOR STARTING CAPABILITY by electronically torque-matching the surge loads to the engine. Digital voltage regulation at ±1%.
  • SINGLE SOURCE SERVICE RESPONSE: From Generac’s extensive dealer network provides parts and service know-how for the entire unit, from the engine to the smallest electronic component.
  • GENERAC TRANFER SWITCHES.: Long life and reliability are synonymous with GENERAC POWER SYSTEMS. One reason for this confidence is the GENERAC product line is offered with its own transfer systems and controls for total system compatibility.
  • Intake air system - Naturally aspirated
  • Lifter type - Hydraulic
  • Fuel shut off solenoid - Standard
  • LP fuel pressure - 7 - 14 in. water column
  • NG fuel pressure - 3.5 - 14 in. water column
  • Governor type - Electronic
  • Governor frequency regulation - Isochronous
  • Governor steady state regulation - ± 0.25%
  • Air flow (inlet air including alternator and combustion air - 2,829 cfm (80.1 cmm)
  • Heat rejection to coolant - 201,600 BTU / hr.
  • Flow at rated power - 92.7 scfm (2.6 cmm)
  • Exhaust flow at rated output - 104 scfm (2.9 cmm)
  • Exhaust temperature at muffler outlet - 945 °C (507 °F)
  • Rated synchronous - 1,800 rpm
  • Temperature deration - 3% for every 10 °C above 25 °C or 1.65% for every 10 °F above 77 °F
  • Altitude deration - 1% for every 100 m above 183 m or 3% for every 1,000 ft. above 600 ft.
  • Two-line plain text LCD display - Simple user interface for ease of operation.
  • Auto mode switch - Automatic start on utility failure. 7 day exerciser.
  • Off mode switch - Stops unit. Power is removed. Control and charger still operate.
  • Manual mode switch - Start with starter control, unit stays on. If utility fails, transfer to load takes place.
  • Programmable start delay between 10 - 30 seconds - 10 sec standard
  • Engine start sequence - cyclic cranking: 16 sec on, 7 rest (90 sec maximum duration)
  • Engine warm-up - 5 sec
  • Engine cool-down - 1 min
  • Starter lock-out - Starter cannot re-engage until 5 sec after engine has stopped.
  • Overspeed shutdown - Standard, 72 Hz
  • Smart battery charger, Automatic voltage regulation with over and under voltage protection, Automatic low oil pressure shutdown, High temperature shutdown, Overcrank protection, Safety fused, Failure to transfer protection, Low battery protection, 50 event run log, Future set capable exerciser, Incorrect wiring protection, Internal fault protection, Common external fault capability, Governor failure protection
  • Closed coolant recovery system.
  • UV / Ozone resistant hoses
  • Field convertible fuel type with no mechanical adjustment required.
  • UL 2200 Listed
  • Listed and labeled by the Southwest Research Institute allowing installation as close as 18 in. (457 mm) to a structure*. *Must be located away from doors, windows, and fresh air intakes and in accordance with local codes.

Generator

  • Revolving field heavy duty generator.
  • Directly connected to the engine.
  • Operating temperature rise 120 °C above a 40 °C ambient.
  • Class H insulation is NEMA rated
  • Class F insulation is NEMA rated
  • All models fully prototyped tested.