Generac Protector Series Standby Generators

Brand: Generac

Product Type: Standby Generators

Overview

The Generac Protector Series offers liquid-cooled gaseous standby generators designed for reliable power backup. These generators feature advanced technology for optimal performance and durability.

Key Inclusions

Note: 25-45 kW units are field convertible between natural gas or liquid propane. 60 kW units are built per fuel requirement and are not convertible.

*Only if located away from doors, windows, and fresh air intakes, and unless otherwise directed by local codes. Applicable for 25kW and 30kW units only.

Standby Power Ratings:

Compliance: Assembled in the USA using domestic and foreign parts. Meets EPA Emission Regulations. 25, 30 & 45 kW models are CA/MA emissions compliant. 36 & 60 kW models are not for sale in CA / MA.

Features

Innovative Design & Prototype Testing: Generac emphasizes "IMPROVING POWER BY DESIGN" through rigorous component, reliability, environmental, destruction, and life testing, adhering to CSA, NEMA, EGSA, and other standards.

Test Criteria

Solid-State, Frequency Compensated Voltage Regulation: This system provides optimized FAST RESPONSE to changing load conditions and MAXIMUM MOTOR STARTING CAPABILITY by electronically torque-matching surge loads to the engine. Digital voltage regulation is maintained at ±1%.

Single Source Service Response: Generac's extensive dealer network offers comprehensive parts and service expertise for the entire unit.

Generac Transfer Switches: The product line includes integrated transfer systems and controls for total system compatibility, ensuring long life and reliability.

Specifications

Generator Specifications

TypeSynchronous
Rotor Insulation ClassH
Stator Insulation ClassH
Telephone Interference Factor (TIF)<50
Alternator Output Leads 1-Phase4 wire
Alternator Output Leads 3-Phase6 wire
BearingsSealed Ball
CouplingFlexible Disc
Excitation SystemDirect

Voltage Regulation

TypeElectronic
SensingSingle Phase
Regulation±1%

Governor Specifications

TypeElectronic
Frequency RegulationIsochronous
Steady State Regulation±0.25%

Electrical System

Battery Charge Alternator12 Volt 15 Amp - 25 & 30 kW
12 Volt 30 Amp - 36, 45 & 60 kW
Static Battery Charger2 Amp
Recommended Battery (battery not included)Group 26, 525CCA
System Voltage12 Volts

Generator Features

Enclosure Features

Engine Specifications: 25 & 30 kW

MakeGenerac
ModelIn-line
Cylinders4
Displacement (Liters)1.5
Bore (in/mm)3.05/77.4
Stroke (in/mm)3.13/79.5
Compression Ratio11:1
Intake Air SystemNaturally Aspirated
Lifter TypeHydraulic

Engine Specifications: 36, 45 & 60 kW

MakeGenerac
ModelIn-line
Cylinders4
Displacement (Liters)2.4
Bore (in/mm)3.41/86.5
Stroke (in/mm)3.94/100
Compression Ratio9.5:1
Intake Air SystemNaturally Aspirated (36 & 45 kW) or Turbocharged/Aftercooled (60 kW)
Lifter TypeHydraulic

Engine Lubrication System

Oil Pump TypeGear
Oil Filter TypeFull flow spin-on cartridge
Crankcase Capacity (qt/l)4/3.8 - 25, 30, 36 & 45 kW
5.25/4.96 - 60 kW

Engine Cooling System

TypeClosed
Water PumpBelt driven
Fan Speed (rpm)2484 - 25 & 30 kW
1865 - 36 & 45 kW
2100 - 60 kW
Fan Diameter (in/mm)17.7/449.6 (25 & 30 kW) or 22/558.8 (36, 45 & 60 kW)
Fan ModePusher (25 & 30 kW) or Puller (36, 45 & 60 kW)

Fuel System

Fuel TypeNatural gas, propane vapor
CarburetorDown Draft
Secondary Fuel RegulatorStandard
Fuel Shut Off SolenoidStandard
Operating Fuel Pressure5-14" water column/9-26 mm HG
LP Fuel Pressure11-14" Water Column
NG Fuel Pressure5-14" Water Column

(All ratings in accordance with BS5514, ISO3046, ISO8528, SAE J1349 and DIN6271)

Performance Data

Generator Output Voltage/kW - 60 Hz

Model kW LPG Amp LPG kW Nat. Gas Amp Nat. Gas CB Size (Both)
RG0252510425104125
RG02525872587100
RG0252575257590
RG0303012530125150
RG0303010430104125
RG03030903090100
RG0363615036150175
RG0363612536125150
RG0363610836108125
RG0363654365460
RG0454518845188200
RG0454515645156175
RG0454513545135150
RG0454568456880
RG0606025060250300
RG0606020860208250
RG0606018060180200
RG06060906090100

Surge Capacity in Amps (Voltage Dip @ < .4 pf)

Model Voltage 15% 30%
RG025120/240 V, 1Ø65170
RG025120/208 V, 3Ø80130
RG025120/240 V, 3Ø69112
RG030120/240 V, 1Ø75180
RG030120/208 V, 3Ø96155
RG030120/240 V, 3Ø83134
RG036120/240 V, 1Ø105240
RG036120/208 V, 3Ø44130
RG036120/240 V, 3Ø38115
RG036277/480 V, 3Ø2060
RG045120/240 V, 1Ø105240
RG045120/208 V, 3Ø44130
RG045120/240 V, 3Ø38115
RG045277/480 V, 3Ø2060
RG060120/240 V, 1Ø140320
RG060120/208 V, 3Ø70210
RG060120/240 V, 3Ø61182
RG060277/480 V, 3Ø3091

Note: Fuel pipe must be sized for full load.

For Btu content, multiply ft³/hr x 2520 (LP) or ft³/hr x 1000 (NG).

For megajoule content, multiply m³/hr x 93.15 (LP) or m³/hr x 37.26 (NG).

Refer to "Emissions Data Sheets" for maximum fuel flow for EPA and SCAQMD permitting purposes.

Engine Fuel Consumption

Model Natural Gas Propane
(ft³/hr)(m³/hr)(gal/hr)(l/hr)(ft³/hr)
RG025Exercise cycle601.70.72.524
RG02525% of rated load2206.32.99.188
RG02550% of rated load2978.43.312.3119
RG02575% of rated load36210.3415145
RG025100% of rated load43012.24.717.8172
RG030Exercise cycle601.70.72.524
RG03025% of rated load2406.82.61096
RG03050% of rated load3209.13.513.3128
RG03075% of rated load40011.44.416.6160
RG030100% of rated load492145.420.4197
RG036Exercise cycle651.80.72.625
RG03625% of rated load21062.38.683
RG03650% of rated load38010.84.215.7151
RG03675% of rated load54515.55.922.4216
RG036100% of rated load73020.7830.1290
RG045Exercise cycle651.80.72.625
RG04525% of rated load21062.38.683
RG04550% of rated load38010.84.215.7151
RG04575% of rated load54515.55.922.4216
RG045100% of rated load73020.7830.1290
RG060Exercise cycle1233.51.345.149.3
RG06025% of rated load2677.62.710.5101
RG06050% of rated load48313.7519183
RG06075% of rated load67219.1726.5255
RG060100% of rated load86224.5933.9327

STANDBY RATING: Standby ratings apply to installations served by a reliable utility source. The standby rating is applicable to varying loads for the duration of a power outage. There is no overload capability for this rating. Ratings are in accordance with ISO-3046-1. Design and specifications are subject to change without notice.

Ambient Conditions & Controller Features

Engine Cooling

Air flow (inlet air including alternator and combustion air in cfm/cmm)25 kW: 2490/70.530 kW: 2490/70.536 kW: 2725/77.245 kW: 2725/77.260 kW: 3280/92.9
System coolant capacity (gal/liters)2/7.62/7.62.5/9.52.5/9.52.5/9.5
Heat rejection to coolant (BTU per hr/MJ per hr)112,000/118.2135,000/142.4193,000/203.6193,000/203.6270,000/284.9
Maximum operation air temperature on radiator (°C/°F)60/140
Maximum ambient temperature (°C/°F)50/122

Combustion Requirements

Flow at rated power (cfm/cmm)25 kW: 62/1.830 kW: 72/236 kW: 144/4.145 kW: 144/4.160 kW: 180/5.1

Sound Emissions

Sound output in dB(A) at 23 ft (7 m) with generator in exercise mode*25 kW: 5930 kW: 5936 kW: 6145 kW: 6160 kW: 65
Sound output in dB(A) at 23 ft (7 m) with generator operating at normal load*25 kW: 7230 kW: 7336 kW: 7045 kW: 7360 kW: 72

*Sound levels are taken from the front of the generator. Sound levels taken from other sides of the generator may be higher depending on installation parameters.

Exhaust

Exhaust flow at rated output (cfm/cmm)25 kW: 203/5.730 kW: 237/6.736 kW: 300/8.545 kW: 420/11.960 kW: 494/14
Exhaust temperature at muffler outlet (°C/°F)25 kW: 593/110030 kW: 610/113036 kW: 579/107545 kW: 593/110060 kW: 566/1050

Engine Parameters

Rated Synchronous rpm3600

Power Adjustment for Ambient Conditions

Temperature Deration: 3% for every 10 °C above 25 °C or 1.65% for every 10 °F above 77 °F

Altitude Deration (25, 30, 36 & 45 kW): 1% for every 100 m above 183 m or 3% for every 1000 ft above 600 ft

Altitude Deration (60 kW): 1% for every 100 m above 915 m or 3% for every 1000 ft above 3000 ft

Controller Features

Available Accessories

Installation Layout: 25 & 30 kW (Page 1 of 2)

This section describes the physical layout and dimensions for the 25 & 30 kW models.

Top View

Shows air intake (both sides), radiator/exhaust discharge air (both sides). Key dimensions: 665.5 [26.2"] (Center of Gravity, see Note 5).

Service Items (Accessible via doors)

Note: Reference Owner's Manual for periodic replacement part listings.

Diagram Elements: Circuit Breaker, Neutral and Customer Connection Opening, Vise Action Latch (one per door, one lift-off door per side of generator), Exhaust Muffler enclosed within generator enclosure, Lifting Provision (4 places).

Overall Dimensions: Length: 1580 [62.2"]; Height: 980 [38.6"]; Width: 776 [30.6"]; Door Type: 631 [24.8"]; Typical: 48 [1.9"] / 45 [1.8"]; Right Side View: 780 [30.7"]; Typical: 1490 [58.7"]

Fuel Line Connection: 3/4" NPT Female Coupling.

Weight Data

Engine/KW Enclosure Material Weight Genset Only (KG [LBS]) Weight Shipping Skid (KG [LBS]) Shipping Weight (KG [LBS])
1.5L/25KWST392 [865]30 [66]422 [931]
1.5L/30KWST406 [895]30 [66]436 [961]
1.5L/25KWAL352 [777]30 [66]382 [843]
1.5L/30KWAL366 [807]30 [66]396 [873]

Notes:

  1. Minimum recommended concrete pad size: 1092 (43") WIDE X 1887 (74.3") LONG. Reference Installation Guide supplied with unit for concrete pad guidelines.
  2. Allow sufficient room on all sides of the generator for maintenance and servicing. Unit must be installed in accordance with current applicable NFPA 37 and NFPA 70 standards as well as any other federal, state, and local codes.
  3. Control Panel / Circuit Breaker Information: See Specification Sheet or Owners Manual. Accessible through Customer Access Assembly Door on rear of generator.
  4. Remove the rear enclosure cover panel to access the stub-up areas for: High voltage connection (AC load lead conduit connection, neutral connection, battery charger 120 volt AC (0.5 AMP MAX) connection) and Low voltage connection (transfer switch control wires).
  5. Center of gravity and weight may change due to unit options.
  6. Bottom of generator set must be enclosed to prevent pest intrusion and recirculation of discharge air and/or improper cooling air flow.
  7. Exhaust system maximum back pressure: 24 inches H2O.
  8. Reference Owners Manual for lifting warnings.
  9. Mounting bolts or studs to mounting surface shall be 5/8-11 Grade 5 (use standard SAE torque specs).
  10. Must allow free flow of intake air, discharge air and exhaust. See spec sheet for minimum air flow and maximum restriction requirements.
  11. Generator must be installed such that fresh cooling air is available and that discharge air from radiator is not recirculated.
  12. Exhaust muffler enclosed within generator enclosure; remove enclosure to access exhaust muffler.

Installation Layout: 25 & 30 kW (Page 2 of 2)

This section provides detailed dimensional drawings for the 25 & 30 kW models.

Top View

Shows mounting slots (13.5 X 29.5, 4X) and mounting slot centers (1380 [54.3"] TYP). Features a stub-up area for high and low voltage connections, circuit breaker, neutral, and customer connection opening.

Left Side View

Overall dimensions: Length 1580 [62.2"].

Rear View

Overall dimensions: Width 776 [30.6"]. Features a removable stub-up cover. Mounting slot centers: 723 [28.5"] TYP.

Note: Stub-up area for high and low voltage connections, circuit breaker, neutral, and customer connection opening.

Installation Layout: 36 & 45 kW (Page 1 of 2)

This section describes the physical layout and dimensions for the 36 & 45 kW models.

Top View

Shows air intake (both sides), radiator/exhaust discharge air (both sides). Key dimensions: 749.3 [29.5"] (Center of Gravity, see Note 5). Features a removable cover for access to radiator fill cap and lube oil maintainer supply tank.

Service Items (Accessible via doors/sides)

Note: Reference Owner's Manual for periodic replacement part listings.

Diagram Elements: Circuit Breaker (see Note 3), Exhaust Muffler enclosed within generator enclosure, Vise Action Latch (one per door, one lift-off door per side of generator).

Overall Dimensions: Height: 1170 [46.1"]; Width: 888 [35.0"]; Typical Door: 758 [29.8"]; Typical: 50 [2.0"] / 46.5 [1.83"]; Left Side View: 1000 [39.4"]; Overall Length: 1950 [76.8"] TYP, 1857 [73.1"] TYP.

Fuel Line Connection: 3/4" NPT Female Coupling.

Weight Data

Engine/KW Enclosure Material Weight Genset Only (KG [LBS]) Weight Shipping Skid (KG [LBS]) Shipping Weight (KG [LBS])
2.4L 36KWST569 [1255]44 [98]613 [1353]
2.4L 36KWAL545 [1202]44 [98]590 [1300]
2.4L 45KWST596 [1313]44 [98]640 [1411]
2.4L 45KWAL572 [1260]44 [98]616 [1358]

Notes:

  1. Minimum recommended concrete pad size: 1194MM (47") WIDE X 2256MM (88.8") LONG. Reference Installation Guide supplied with unit for concrete pad guidelines.
  2. Allow sufficient room on all sides of the generator for maintenance and servicing. Unit must be installed in accordance with current applicable NFPA 37 and NFPA 70 standards as well as any other federal, state, and local codes.
  3. Control Panel / Circuit Breaker Information: See Specification Sheet or Owners Manual. Accessible through Customer Access Assembly Door on rear of generator.
  4. Remove the rear enclosure cover panel to access the stub-up areas for: High voltage connection (AC load lead conduit connection, neutral connection, battery charger 120 volt AC (0.5 AMP MAX) connection) and Low voltage connection (transfer switch control wires).
  5. Center of gravity and weight may change due to unit options.
  6. Bottom of generator set must be enclosed to prevent pest intrusion and recirculation of discharge air and/or improper cooling air flow.
  7. Reference Owners Manual for lifting warnings.
  8. Mounting bolts or studs to mounting surface shall be 5/8-11 Grade 5 (use standard SAE torque specs).
  9. Must allow free flow of intake air, discharge air and exhaust. See spec sheet for minimum air flow and maximum restriction requirements.
  10. Generator must be installed such that fresh cooling air is available and that discharge air from radiator is not recirculated.
  11. Exhaust muffler and fan belt enclosed within generator enclosure; remove front panel to access.

Installation Layout: 36 & 45 kW (Page 2 of 2)

This section provides detailed dimensional drawings for the 36 & 45 kW models.

Top View

Shows mounting slots (13.5 X 29.5, 4X) and mounting slot centers (1733 [68.2"] TYP). Features a stub-up area for high and low voltage connections, circuit breaker, neutral, and customer connection opening.

Left Side View

Overall dimensions: Length 1750 [68.9"] TYP, 1950 [76.8"].

Rear View

Overall dimensions: Width 888 [35.0"]. Features a removable stub-up cover. Mounting slot centers: 838 [33.0"] TYP.

Note: Stub-up area for high and low voltage connections, circuit breaker, neutral, and customer connection opening.

Installation Layout: 60 kW (Page 1 of 2)

This section describes the physical layout and dimensions for the 60 kW model.

Top View

Shows air intake (both sides), radiator/exhaust discharge air (both sides). Key dimensions: 683.3 [26.9"] (Center of Gravity). Features a removable cover for access to radiator fill cap and lube oil maintainer supply tank.

Service Items (Accessible via doors/sides)

Note: Reference Owner's Manual for periodic replacement part listings.

Diagram Elements: Circuit Breaker (see Note 3), Exhaust Muffler enclosed within generator enclosure, Vise Action Latch (one per door, one lift-off door per side of generator).

Overall Dimensions: Height: 1170 [46.1"]; Width: 888 [35.0"]; Typical Door: 758 [29.8"]; Typical: 50 [2.0"] / 58 [2.3"]; Left Side View: 1000 [39.4"]; Overall Length: 1950 [76.8"] TYP, 1857 [73.1"] TYP.

Fuel Line Connection: 3/4" NPT Female Coupling.

Weight Data

Engine/KW Enclosure Material Weight Genset Only (KG [LBS]) Weight Shipping Skid (KG [LBS]) Shipping Weight (KG [LBS])
2.4L 60KWST582 [1283]44 [98]626 [1381]
2.4L 60KWAL558 [1230]44 [98]602 [1328]

Notes:

  1. Minimum recommended concrete pad size: 1194MM (47") WIDE X 2256MM (88.8") LONG. Reference Installation Guide supplied with unit for concrete pad guidelines.
  2. Allow sufficient room on all sides of the generator for maintenance and servicing. Unit must be installed in accordance with current applicable NFPA 37 and NFPA 70 standards as well as any other federal, state, and local codes.
  3. Control Panel / Circuit Breaker Information: See Specification Sheet or Owners Manual. Accessible through Customer Access Assembly Door on rear of generator.
  4. Remove the rear enclosure cover panel to access the stub-up areas for: High voltage connection (AC load lead conduit connection, neutral connection, battery charger 120 volt AC (0.5 AMP MAX) connection) and Low voltage connection (transfer switch control wires).
  5. Center of gravity and weight may change due to unit options.
  6. Bottom of generator set must be enclosed to prevent pest intrusion and recirculation of discharge air and/or improper cooling air flow.
  7. Reference Owners Manual for lifting warnings.
  8. Mounting bolts or studs to mounting surface shall be 5/8-11 Grade 5 (use standard SAE torque specs).
  9. Must allow free flow of intake air, discharge air and exhaust. See spec sheet for minimum air flow and maximum restriction requirements.
  10. Generator must be installed such that fresh cooling air is available and that discharge air from radiator is not recirculated.
  11. Exhaust muffler and fan belt enclosed within generator enclosure; remove front panel to access.

Installation Layout: 60 kW (Page 2 of 2)

This section provides detailed dimensional drawings for the 60 kW model.

Top View

Shows mounting slots (13.5 X 29.5, 4X) and mounting slot centers (1733 [68.2"] TYP). Features a stub-up area for high and low voltage connections, circuit breaker, neutral, and customer connection opening.

Left Side View

Overall dimensions: Length 1750 [68.9"] TYP, 1950 [76.8"].

Rear View

Overall dimensions: Width 888 [35.0"]. Features a removable stub-up cover. Mounting slot centers: 838 [33.0"] TYP.

Note: Stub-up area for high and low voltage connections, circuit breaker, neutral, and customer connection opening.

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