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Atlas Copco QAS 70 ID T4F Generator

Atlas Copco QAS 70 ID T4F Generator


The Atlas Copco QAS 70 ID T4F generators are prime power, multi-voltage, sound attenuated, mobile generators. They are powered by an Isuzu Tier 4 Final, liquid-cooled, four 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 galvannealed steel. 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.





  • Compact, sound attenuated, corrosion resistant enclosure with single point lifting and 110% fluid containment
  • Available as a skid mounted unit with forklift pockets, or on a single axle trailer
  • Heavy Duty alternator with AREP excitation and marine grade protection
  • DeepSea controller
  • Single side servicing with long run filters and 500-hour service intervals
  • Extremely reliable and durable Isuzu 4JJ1X engine with DOC &SCR after-treatment and limited 5 year limited warranty
  • Identical enclosures and maintenance points between both models
  • Emergency Stop
  • Remote Start / Stop




  • Extremely durable and environmentally sensitive designed to be used for everything from the oil patch 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 capabilites
  • Reliable and intuitive controls for ease of use and diagnostic capabilities
  • Reliable and intuitive controls for ease of use and diagnostic capabilitites
  • Heavy duty oil, air and fuel filters extend the maintenance
  • interval to 500 hours for reduced total cost of ownership 
  • Reduces maintenance costs with long intervals easy access for mechanics  Proven engine platform with high reliability, a simple
  • maintenance free Diesel Oxidization Catalyst only after treatment 
  • 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
  • QAS 70 Technical Info


    Performance  Units QAS 70 ID 
    Frequency  Hz  60 
    Rated prime power 3ø  kW/kVA  56 / 70
    Rated standby power 3ø  kW/kVA  60 / 75
    3ø Power factor    0.8 
    3ø Voltage in 480V switch position (series 480Y / 277 
    Amp capacity @480V  84 
    3ø Voltage in 240-208V switch position (p 240YY / 139-208YY 

    Rated Prime Power @ 240V 3Ø


    55 / 69

    Amp capacity @240V  166 

    Rated Prime Power @ 208V 3Ø


    51 / 64

    Amp capacity @208V  177 
    Rated prime power 1ø  kW/kVA  31/31
    1ø Power factor   
    1ø Voltage in 120-240V switch position (Zig-Zag) 240 / 120 
    Amp Capacity @240V  130 
    Amp Capacity @120V  130 x2
    Alternator (4 Pole, 12 Wire) Leroy Somer LSA 42.3 l9
    Excitation system   AREP (auxiliary winding)

    Digital Automatic Voltage Regulator (+/- 0.25%)

    Leroy Somer D350
    Insulation   Class H
    Main Breaker - Shunt Trip A 200
    Power Distribution - Rated Current in   5 Wire (L1, L2, L3, N, Ground)
    Terminal Board Connections   Bare Wire Terminals
    Maximum Terminal Cable Size   350MCM
    Convenience Receptacles   2 x NEMA 5-20R & 2 x 125/250V 50A CS6364 
    Engine  Units QAS 70 ID
    Model    4JJ1X
    US EPA Family   


    US EPA Tier    Tier 4 Final
    Displacement  L 2.99 
    Cylinders  # 4
    Continuous engine output  HP (kW) 88 (65.5)
    Gross engine power output  HP (kW) 95 (71)
    Rated Speed RPM 1800
    Engine control    ECU
    Aspiration    Turbo w/Intercooler
    Engine oil capacity  US gal 3.7 (14)
    Engine coolant capacity  US gal 1.6 (6)
    Max. ambient temperature (@Sea Level) 

    °F (°C)

    122 (50)
    Min. starting temperature (Without coolant heater on)

    °F (°C)

    14 (-10)
    Min. starting temperature (With coolant heater on)

    °F (°C)

    -4 (-20)
    Electrical system (Negative ground)  V 12
    Engine alternator output  A 110
    Battery Capacity (Cold Cranking Amps)  A 1100
    Sound Pressure Level @ 23’(7 m) @ 75% Load dB(A) 67
    Fuel and DEF Systems Units QAS 70 ID

    Fuel Consumption @ 25% load

    Gal/hr (L/hr)

    1.41 (5.34)

    Fuel Consumption @ 50% load

    Gal/hr (L/hr)

    2.54 (9.61)

    Fuel Consumption @ 75% load

    Gal/hr (L/hr)

    3.95 (14.95) 

    Fuel Consumption @ 100% load

    Gal/hr (L/hr)

    3.95 (14.95)

    Fuel Type


    Ultra-Low Sulfur Diesel ONLY

    Fuel Tank Capacity

    Gal (L)

    110 (416) 

    Fuel Autonomy @ 75% load



    DEF Tank Capacity

    Gal (L)

    7.4 (28.0) 

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