Diesel generator set — QSB5 series engine
50–125 kW @ 60Hz | EPA Tier 3 emissions
Description
Cummins Power Generation generator sets are fully integrated power generation systems providing optimum performance, reliability and versatility for stationary standby applications.
Features
- Heavy Duty Engine - Rugged 4-cycle industrial diesel delivers reliable power and fast response to load changes.
- Alternator - Several alternator sizes offer selectable motor starting capability with low reactance 2/3 pitch windings, low waveform distortion with non-linear loads and fault clearing short-circuit capability.
- Control system - The PowerCommand® 2.3 electronic control is standard equipment and provides total generator set system integration including automatic remote starting/stopping, precise frequency and voltage regulation, alarm and status message display, output metering, auto-shutdown at fault detection and NFPA 110 Level 1 compliance.
- Cooling system - Standard cooling package provides reliable running at up to 50 °C (122 °F) ambient temperature.
- Enclosures - Aesthetically appealing enclosure incorporates special designs that deliver one of the quietest generators of its kind. Aluminum material plus durable powder coat paint provides excellent anti-corrosion performance. Hinged doors provide easy access for service and maintenance. Designed to withstand 180 MPH wind loads (ASCE7-10).
- Fuel tanks - Optional dual wall sub-base fuel tanks for economical and flexible solutions to meet extensive code requirements.
- NFPA - Accepts full rated load in a single step in accordance with NFPA 110 for Level 1 systems.
- Warranty and service - Backed by a comprehensive warranty and worldwide distributor and dealer network.
| Model | kW (Standby) | kVA (Standby) | kW (Prime) | kVA (Prime) | Data sheet |
|---|---|---|---|---|---|
| C50D6C | 50 | 63 | 45 | 56 | NAD-6212-EN |
| C60D6C | 60 | 75 | 54 | 68 | NAD-6213-EN |
| C80D6C | 80 | 100 | 72 | 90 | NAD-6214-EN |
| C100D6C | 100 | 125 | 90 | 113 | NAD-6215-EN |
| C125D6C | 125 | 156 | 112.5 | 141 | NAD-6216-EN |
Generator set specifications
| Governor regulation class | ISO 8528 Part 1 Class G3 |
| Voltage regulation, no load to full load | ± 1.0% |
| Random voltage variation | ± 1.0% |
| Frequency regulation | Isochronous |
| Random frequency variation | ± 0.50% |
| Radio frequency emissions compliance | FCC code title 47 part 15 class A and B |
Engine specifications
| Design | Turbocharged and charge air cooled |
| Bore | 107 mm (4.21 in) |
| Stroke | 124 mm (4.88 in) |
| Displacement | 4.5 liters (272 in³) |
| Cylinder block | Cast iron, in-line 4 cylinder |
| Battery capacity | 850 amps per battery at 0 °C (32 °F) |
| Battery charging alternator | 100 amps |
| Starting voltage | 2 × 12 volt in parallel, negative ground |
| Lube oil filter type(s) | Spin-on with relief valve |
| Standard cooling system | High ambient radiator |
| Rated speed | 1800 rpm |
Alternator specifications
| Design | Brushless, 4 pole, drip proof, revolving field |
| Stator | 2/3 pitch |
| Rotor | Direct coupled, flexible disc |
| Insulation system | Class H per NEMA MG1-1.65 |
| Standard temperature rise | 120 ºC (248 °F) standby |
| Exciter type | Torque match (shunt) with PMG as option |
| Cooling | Direct drive centrifugal blower |
| AC waveform THD | < 5% no load to full linear load, < 3% for any single harmonic |
| Telephone influence factor (TIF) | < 50 per NEMA MG1-22.43 |
| Telephone harmonic factor (THF) | < 3% |
Available voltages
1-phase
- 120/240
3-phase
- 120/208
- 120/240
- 277/480
- 347/600
- 127/220
Generator set options
Fuel Tanks
- Basic fuel tanks
- Regional fuel tanks
Engine
- Engine air cleaner – normal or heavy duty
- Shut down – low oil pressure
- Extension – oil drain
- Engine oil heater
Alternator
- 120 °C temperature rise alternator
- 105 °C temperature rise alternator
- PMG excitation
- Alternator heater, 120V
- Reconnectable full 1 phase output alternator
Control
- AC output analog meters
- Stop switch – emergency
- Auxiliary output relays (2)
- Auxiliary configurable signal inputs (8) and relay outputs (8)
Electrical
- One, two or three circuit breaker configurations
- 80% rated circuit breakers
- 80% or 100% rated LSI circuit breakers
- Battery charger
Enclosure
- Aluminum enclosure Sound Level 1 or Level 2, sandstone or green color
- Aluminum weather protective enclosure with muffler installed, green color
Cooling system
- Shutdown – low coolant level
- Warning – low coolant level
- Extension – coolant drain
- Coolant heater options — <4 °C (40 °F) – cold weather; <-18 °C (0 °F) – extreme cold
Exhaust system
- Exhaust connector NPT
- Exhaust muffler mounted
Generator set application
- Base barrier – elevated genset
- Radiator outlet duct adapter
Warranty
- Base warranty – 2 year / 400 hours, standby
- Base warranty – 1 year / unlimited hours, prime
- 3 year standby warranty options
- 5 year standby warranty options
Generator set accessories
- Coolant heater
- Battery heater kit
- Engine oil heater
- Remote control displays
- Auxiliary output relays (2)
- Base barrier - elevated generator set
- Alternator heater
- Auxiliary configurable signal inputs (8) and configurable relay outputs (8)
- Annunciator – RS485
- Audible alarm
- Remote monitoring device – PowerCommand® 500/550
- Battery charger – stand-alone, 12V
- Circuit breakers
- Enclosure Sound Level 1 to Sound Level 2 upgrade kit
- Mufflers – industrial, residential or critical
- Alternator PMG excitation
Control system — PowerCommand 2.3
PowerCommand® 2.3 control - An integrated generator set control system providing voltage regulation, engine protection and operator interface.
Control - Provides battery monitoring and testing features and smart-starting control system.
InPower™ – PC-based service tool available for detailed diagnostics.
PCCNet RS485 - Network interface (standard) to devices such as remote annunciator for NFPA 110 applications.
Control boards - potted for environmental protection.
Ambient operation - Suitable for operation in ambient temperature from -40°C to +70°C and altitudes to 13,000 ft (5,000 m).
AC Protection
- AmpSentry protective relay
- Over current warning and shutdown
- Over and under voltage shutdown
- Over and under frequency shutdown
- Over excitation (loss of sensing) fault
- Field overload
- Overload warning
- Reverse kW shutdown
- Reverse VAR shutdown
- Short circuit protection
Engine protection
- Overspeed shutdown
- Low oil pressure warning and shutdown
- High coolant temperature warning and shutdown
- Low coolant level warning or shutdown
- Low coolant temperature warning
- High, low and weak battery voltage warning
- Fail to start (overcrank) shutdown
- Fail to crank shutdown
- Redundant start disconnect
- Cranking lockout
- Sensor failure indication
- Low fuel level warning or shutdown
- Emergency stop
- Fuel-in-rupture-basin warning or shutdown
Operator / display panel
- Manual off switch
- 320 × 240 Pixels graphic LED backlight LCD with push button access for viewing engine and alternator data and providing setup, controls, and adjustments (English, Spanish, or French).
- LED lamps indicating genset running, not in auto, common warning, common shutdown, manual run mode and remote start
- Suitable for operation in ambienttetmperatures from -20°C to +70°C
Alternator data
- Line-to-line and Line-to-neutral AC volts
- 3-phase AC current
- Frequency
- kVa, kW, power factor
Engine data
- DC voltage
- Lube oil pressure
- Coolant temperature
Other data
- Generator set model data
- Start attempts, starts, running hours
- Fault history
- RS485 Modbus® interface
- Data logging and fault simulation (requires InPower™ service tool)
Digital voltage regulation
- Integrated digital electronic voltage regulator
- 3-phase line-to-line sensing
- Configurable torque matching
- Fault current regulation under single or three phase fault conditions
Control functions
- Time delay start and cooldown
- Cycle cranking
- PCCNet interface
- (2) Configurable inputs
- (2) Configurable outputs
- Remote emergency stop
- Automatic transfer switch (ATS) control
- Generator set exercise, field adjustable
Options
- Auxiliary output relays (2)
- Remote annunciator with (3) configurable inputs and (4) configurable outputs
- PMG alternator excitation
- PowerCommand 500/550 for remote monitoring and alarm notification (accessory)
- Auxiliary, configurable signal inputs (8) and configurable relay outputs (8)
- AC output analog meters (bargraph)
- Color-coded graphical display of:
- - 3-phase AC voltage -
- - 3-phase current
- - Frequency
- - kVa
- Remote operator panel
Ratings definitions
Emergency standby power (ESP): Applicable for supplying power to varying electrical load for the duration of power interruption of a reliable utility source. Emergency Standby Power (ESP) is in accordance with ISO 8528. Fuel Stop power in accordance with ISO 3046, AS 2789, DIN 6271 and BS 5514.
Limited-time running power (LTP): Applicable for supplying power to a constant electrical load for limited hours. Limited Time Running Power (LTP) is in accordance with ISO 8528.
Prime power (PRP): Applicable for supplying power to varying electrical load for unlimited hours. Prime Power (PRP) is in accordance with ISO 8528. Ten percent overload capability is available in accordance with ISO 3046, AS 2789, DIN 6271 and BS 5514.
Base load (continuous) power (COP): Applicable for supplying power continuously to a constant electrical load for unlimited hours. Continuous Power (COP) in accordance with ISO 8528, ISO 3046, AS 2789, DIN 6271 and BS 5514.
| Model | Dim "A" mm (in.) | Dim "B" mm (in.) | Dim "C" mm (in.) | Set Weight* wet kg (lbs) | Open Set |
|---|---|---|---|---|
| C50D6C | 2482 (98) | 965 (38) | 1321 (52) | 958 (2113) |
| C60D6C | 2482 (98) | 965 (38) | 1321 (52) | 1006 (2217) |
| C80D6C | 2482 (98) | 965 (38) | 1321 (52) | 1054 (2324) |
| C100D6C | 2482 (98) | 965 (38) | 1321 (52) | 1106 (2439) |
| C125D6C | 2482 (98) | 965 (38) | 1321 (52) | 1173 (2586) |
| Weather Protective Enclosure | ||||
| C50D6C | 2482 (98) | 1016 (40) | 1473 (58) | 1039 (2290) |
| C60D6C | 2482 (98) | 1016 (40) | 1473 (58) | 1087 (2396) |
| C80D6C | 2482 (98) | 1016 (40) | 1473 (58) | 1135 (2503) |
| C100D6C | 2482 (98) | 1016 (40) | 1473 (58) | 1187 (2618) |
| C125D6C | 2482 (98) | 1016 (40) | 1473 (58) | 1254 (2765) |
| Sound Attenuated Enclosure Level 1 | ||||
| C50D6C | 3016 (119) | 1016 (40) | 1473 (58) | 1221 (2693) |
| C60D6C | 3016 (119) | 1016 (40) | 1473 (58) | 1137 (2507) |
| C80D6C | 3016 (119) | 1016 (40) | 1473 (58) | 1185 (2614) |
| C100D6C | 3016 (119) | 1016 (40) | 1473 (58) | 1237 (2729) |
| C125D6C | 3016 (119) | 1016 (40) | 1473 (58) | 1304 (2876) |
| Sound Attenuated Enclosure Level 2 | ||||
| C50D6C | 3456 (136) | 1016 (40) | 1473 (58) | 1228 (2708) |
| C60D6C | 3456 (136) | 1016 (40) | 1473 (58) | 1144 (2522) |
| C80D6C | 3456 (136) | 1016 (40) | 1473 (58) | 1192 (2629) |
| C100D6C | 3456 (136) | 1016 (40) | 1473 (58) | 1244 (2744) |
| C125D6C | 3456 (136) | 1016 (40) | 1473 (58) | 1311 (2891) |
| *Weights above are average. Actual weight varies with product configuration. | ||||
Codes and standards
Codes or standards compliance may not be available with all model configurations – consult factory for availability.
The Prototype Test Support (PTS) program verifies the performance integrity of the generator set design. Products bearing the PTS symbol meet prototype test requirements of NFPA 110 for Level 1 systems.
This generator set is designed in facilities certified to ISO 9001 and manufactured in facilities certified to ISO 9001 or ISO 9002.
The generator set is available Listed to UL 2200, Stationary Engine Generator Assemblies. International Building Code (IBC) 2012 certified. All low voltage models are CSA certified to product class 4215-01. U.S. EPA Engine certified to U.S. EPA SI Stationary Emission Regulation 40 CFR, Part 60.
Warning:
Back feed to a utility system can cause electrocution and/or property damage. Do not connect to any building’s electrical system except through an approved device or after building main switch is open.