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Atlas Copco QAS 175 JD T4F Generator

Atlas Copco QAS 175 JD T4F Generator


The Atlas Copco QAS 175 FD T4F generators are prime power, multi-voltage, sound attenuated, mobile generators. They are powered by a  FPT T4 Final liquid-cooled, six-cylinder diesel engine.


The units consist of an alternator, diesel engine, cooling system, electrical distribution and control systems - all enclosed within a sound attenuated enclosure fabricated from powder coated steel with zinc rich primer. 6000 hour salt spray tested. A broad range of undercarriage formats and options are available. Special attention has been given to the overall product quality, user friendliness, ease of serviceability, and economical operation to ensure best in class total cost of ownership.

All QAS generators include the latest Tier 4 Final engine and have a footprint that is up to 20 percent smaller than the previous generation. The starting mechanism ensures that stable power is achieved in less than six seconds.




  • Compact, sound attenuated, corrosion resistant, with single point lifting and 110% fluid containment
  • Dual axle trailer as standard, available as a skid mounted unit with forklift pockets as an option
  • Heavy Duty alternator with AREP+ excitation and reinforced winding protection (system 2)
  • FPT N67TEVP01/02 engine models with DOC+SCRoF+CUC aftertreatment
  • Battery Charger (24V, 12A)
  • External Fuel Tank connections (3-way valve) located inside the enclosure
  • External DEF Transfer System located outside the enclosure
  • Identical enclosures and maintenance points between models
  • Single side service with long run filters and 500-hour service intervals
  • Emergency Stop
  • Remote signal Start / Stop




  • Extremely durable and environmentally sensitive, designed to be used for everything from the oil field to special event power
  • Versatility, giving you the flexibility to match your machine to the correct application
  • Start-up power for the most demanding sites with 300% over load starting capabilities
  • Heavy duty oil, air and fuel filters extend the maintenance interval to 500 hours for reduced total cost of ownership
  • Proven engine platform with high reliability and durability
  • On board charger to ensure the battery is always ready for service
  • Flexibility to work with an external and larger fuel tank for extended autonomy
  • Electric DEF pump automatically controlled by Qc4004 controller for optimal external transfer system
  • Reduces stock of service kits and inventory of parts with rental ROI kept in mind
  • External, recessed emergency stop for increased safety
  • Allows connection as a critical back-up unit via a 2-wire dry contact connection in the distribution panel
  • Technical Data


    Generator  Units  QAS 175 JD 
    Frequency  Hz 50 60
    Rated Prime Power 3Ø  kW/ kVA 126/158 140/175
    Rated Standby Power 3Ø  kW/ kVA 133/166 154/193
    3Ø Power Factor    0.8 0.8
    3Ø Voltage @ 480V (Series Star w/Neutral)  V - 480Y/277
    Amp Capacity @ 480V  A - 210
    3Ø Voltage @ 240-208V (Parallel Star w/ Neutral)  V - 240Y/139 - 208Y/120

    Rated Prime Power @ 240V 3Ø

    kW/kVA -


    Amp Capacity @ 240V  A - 421

    Rated Prime Power @ 208V 3Ø

    A -


    Amp Capacity @ 208V A - 451
    Rated Prime Power 1Ø  kW/ kVA - 76/76
    1Ø Power Factor    - 1.0
    1Ø Voltage @ 120-240V (Zig-Zag)  V - 240/120
    Amp Capacity @ 240V  A - 317
    Amp Capacity @ 120V  A - 2 x 317
    3Ø Voltage @ 400V (Series Star w/Neutral)  V 400Y/231 -
    Amp Capacity @ 400V  A 227 -
    Performance Class (acc. ISO 8528-5:1993)    G2 G2
    Single Step Load G2 Acceptance (0-PRP) @60Hz 480V kW(%)  74 kW (53%)
    Single Step Load Capacity @60Hz 480V kW(%)  140 kW (100%)
    Sound Pressure Level @ 23’(7 m) @ 75% Load² dB(A) 69
    Alternator (4 Pole, 12 Wire)  Leroy Somer TAL 044J
    Excitation system   AREP+
    AVR - Automatic Voltage Regulator model Leroy Somer D350
    AVR's AC voltage regulation accuracy % +/- 0.25%
    Insulation    Class H
    Main Breaker - Rated Current In A 600
    Power Distribution – Terminal Board    5 Wire (L1, L2, L3, N, Ground)
    Terminal Board Connections    Bare Wire Terminals
    Maximum Terminal Cable Size    350MCM
    Convenience Receptacles³  N/A (2) NEMA 5-20R
    (3) 125/250V
    50A CS6369


    Engine  Units  QAS 175 FD 
    Model  FPT N67TEVP01
    US EPA Tier    Tier 4 Final 
    Displacement  6.7
    Rated Net Engine Power Output  HP (kW)  189 (141)
    Rated Speed  RPM  1800 
    Engine Control    ECU 
    Aspiration    Turbocharged w/ Intercooler 
    Engine oil capacity⁴ US Gal (L)  9.51 (36) 
    Engine coolant capacity  US Gal (L)  15.32 (58)
    Maximum Ambient Temperature (@ Sea Level)⁵  °F (°C)  129.2 (54) 
    Min. Starting Temp (w/o heater)  °F (°C)  5 (-15) 
    Minimum Starting Temperature (with heater)⁶ °F (°C)  -13 (-25) 
    Electrical System (Negative Ground)  24 
    Engine Alternator Output  90
    Battery Capacity (Cold Cranking Amps)  850



    Fuel System  Units  QAS 175 FD 
    Fuel Consumption @ 25% load 50Hz / 60Hz  US Gal/hr (L/hr)  1.2 (4.5) 1.4 (5.2) 
    Fuel Consumption @ 50% load 50Hz / 60Hz  US Gal/hr (L/hr)  4.0 (15.0) 4.8 (18.0)
    Fuel Consumption @ 75% load 50Hz / 60Hz  US Gal/hr (L/hr)  6.0 (22.7) 7.0 (26.4) 
    Fuel Consumption @ 100% load 50Hz / 60Hz  US Gal/hr (L/hr)  7.8 (29.7) 9.1 (34.4) 
    Fuel Type    Ultra-Low Sulfur Diesel ONLY 
    Fuel Tank Capacity  US Gal (L)  194 (735)
    Fuel Autonomy @ 75% load  Hr  33.9 29.1 
    DEF Tank Capacity  US Gal (L)  11 (41.6)
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