Specification sheet
Diesel generator
set
QSK78 series
engine
2750kVA - 3000kVA 50 Hz
Description
This Cummins
®
Power Generation
commercial generator set is a fully integrated
power generation system, providing optimum
performance, reliability, and versatility for
stationary standby, prime power, and
continuous duty applications.
Features
Cummins
®
heavy-duty engine -
Rugged
4-cycle industrial diesel delivers reliable
power, low emissions and fast response to
load changes.
Permanent magnet generator (PMG) -
Offers enhanced motor starting and fault
clearing short circuit capability.
Alternator -
Several alternator sizes offer
selectable motor starting capability with low
reactance 2/3 pitch windings; low waveform
distortion with non-linear loads, fault clearing
short-circuits capability, and class F or H
insulation.
Cooling system
– Optional remote mounted
cooling system, designed and tested for rated
ambient temperatures, offers maximum flexibility
for facility design requirements.
Control system
– Standard PowerCommand
®
electronic control provides total system
integration including remote start/stop, precise
frequency and voltage regulation, alarm and
status message display, AmpSentry protection,
output metering, auto-shutdown.
Warranty
- Backed by a comprehensive
warranty and worldwide distributor network.
Standby
rating
Prime
rating
Continuous
rating
Emissions
Compliance
Model
50 Hz
kVA (kW)
50 Hz
kVA (kW)
50 Hz
kVA (kW)
EPA and
TA LUFT
Controller
Data sheets
C2750 D5
2750 (2200)
2500 (2000) 2250 (1800)
4g TA LUFT
3.3
DS352-CPGK
C3000 D5
3000 (2400)* 2750 (2200) 2475 (1980)
4g TA LUFT
3.3
DS335-CPGK
*Note: Rating is with a remote cooled configuration
Generator set specifications
Governor regulation
ISO 8528 G2
Steady state voltage regulation, no load to full load
± 0.25%
Steady state frequency variation
± 0.25%
Frequency regulation
Isochronous
EMC compatibility
Radiated emissions to BS EN 61000-6.3
Conducted immunity to BS EN 61000-6.2
Engine specifications
Design
4 cycle, V, turbo charged and low temperature after-cooled
Bore
170
Stroke
190
Displacement
77.6 L (4735 in
3
)
Cylinder block
Cast iron, 18 cylinder
Battery capacity
2200 amps
Battery charging alternator
55 amps
Starting voltage
24-volt, negative ground
Fuel system
Direct injection: number 2 diesel fuel, fuel filter, automatic electric
fuel shutoff
Fuel filter
Triple element, 10 micron filtration, spin on fuel filter with water
separator
Air cleaner type
Dry replaceable element
Lube oil filter type(s)
Four spin-on, combination full flow and bypass filters
Cooling system
104 ºF (40 ºC) ambient
Alternator specifications
Design
Brushless, 4 pole, drip-proof revolving field
Stator
2/3 pitch
Rotor
2 bearing, flexible coupling
Insulation system
Class H on low and medium voltage, Class F on high voltage
Standard temperature rise
150 °C standby
Exciter type
PMG (Permanent magnet generator)
Phase rotation
A (U), B (V), C (W)
Alternator cooling
Direct drive centrifugal blower fan
AC waveform total harmonic distortion
No load <1.5%. Non distorting balanced linear load <3%
Telephone influence factor (TIF)
< 50 per NEMA MG1-22.43
Telephone harmonic factor (THF)
< 2%
Available voltages
50 Hz line – neutral / line - line
•
220/380
•
230/400
•
240/416
•
255/440
•
1905/3300
•
3810/6600
•
6350/11000
Generator set options
Engine
Water jacket heater 220/240 V
Centiinel
Eliminator
Pre-lube system
Alternator
Alternator heater
High humidity isolation
Exciter voltage regulator (PMG)
Temperature sensor – RTDs
Temperature sensor – alternator bearing
RTD
Differential current transformers
Exciter voltage regulator (PMG)
80 ºC – 150 ºC temperature rise
Generator set
Vibration isolators
Batteries
Battery charger
Control panel
PowerCommand 3.3
Paralleling
Multiple language support
240 V control anti-condensation
Exhaust system
Industrial silencer
Residential silencer
In-line or side entry options
Accessories
Cooling system
Antifreeze 50/50 (Ethylene glycol)
Radiator, 40 ºC ambient
Radiator, 50 ºC ambient
Remote cooling
Fuel cooler, 40 º ambient
Fuel cooler, 50 ºC ambient
Generator set
10 years for major components
5 years for standby application
2 years for prime application
*Note: Some options may not be available on all models - consult factory for availability.
PowerCommand
®
3.3 control system
Control system
The PowerCommand
®
control system is an integrated
microprocessor based generator set control system
providing voltage regulation, engine protection,
alternator protection, operator interface and
isochronous governing.
AmpSentry
– Includes integral AmpSentry protection,
which provides a full range of alternator protection
functions that are matched to the alternator provided.
Power management
– Control function provides
battery monitoring and testing features and smart
starting control system.
Advanced control methodology
– Three phase
sensing, full wave rectified voltage regulation, with a
PWM output for stable operation with all load types.
Communications interface
– Control comes standard
with PCCNet and Modbus interface.
Regulation compliant
– Prototype tested: UL, CSA
and CE compliant.
Service
- InPower™ PC-based service tool available
for detailed diagnostics, setup, data logging and fault
simulation.
Reliable design
– The control system is designed for
reliable operation in harsh environment.
Multi-language support
Operator panel features
Operator panel features
– The operator panel, in
addition to the alternator, displays the Utility/AC Bus
data.
Operator/display functions
•
320 x 240 pixels graphic LED backlight LCD
•
Auto, manual, start, stop, fault reset and lamp
test/panel lamp switches
•
Alpha-numeric display with pushbuttons
•
LED lamps indicating genset running, remote start,
not in auto, common shutdown, common warning,
manual run mode, auto mode and stop
Paralleling control functions
•
Digital frequency synchronization and voltage
matching
•
Isochronous kW and kvar load sharing controls
•
Droop kW and kvar control
•
Sync check
•
Extended paralleling (Peak Shave/Base Load)
•
Digital power transfer control (AMF) provides load
transfer operation in open or closed transition or soft
(ramping) transfer mode
Alternator data
•
Line-to-neutral and line-to-line AC volts
•
3-phase AC current
•
Frequency
•
kW, kvar, power factor kVA (three phase and total)
Engine data
•
DC voltage
•
Engine speed
•
Lube oil pressure and temperature
•
Coolant temperature
•
Comprehensive FAE data (where applicable)
Other data
•
Genset model data
•
Start attempts, starts, running hours, kW hours
•
Load profile (operating hours at % load in 5%
increments)
•
Fault history
•
Data logging and fault simulation (requires InPower)
Standard control functions
Digital governing (optional)
•
Integrated digital electronic isochronous governor
•
Temperature dynamic governing
Digital voltage regulation
•
Integrated digital electronic voltage regulator
•
3-phase, 4-wire line-to-line sensing
•
Configurable torque matching
AmpSentry AC protection
•
AmpSentry protective relay
•
Over current and short circuit shutdown
•
Over current warning
•
Single and three phase fault regulation
•
Over and under voltage shutdown
•
Over and under frequency shutdown
•
Overload warning with alarm contact
•
Reverse power and reverse var shutdown
•
Field overload
Engine protection
•
Battery voltage monitoring, protection and testing
•
Over speed shutdown
•
Low oil pressure warning and shutdown
•
High coolant temperature warning and shutdown
•
Low coolant level warning or shutdown
•
Low coolant temperature warning
•
Fail to start (over crank) shutdown
•
Fail to crank shutdown
•
Cranking lockout
•
Sensor failure indication
•
Low fuel level warning or shutdown
•
Fuel-in-rupture-basin warning or shutdown
•
Full authority electronic engine protection
Control functions
•
Time delay start and cool down
•
Real time clock for fault and event time stamping
•
Exerciser clock and time of day start/stop
•
Data logging
•
Cycle cranking
•
Load shed
•
Configurable inputs and outputs (4)
•
Remote emergency stop
Options
Auxiliary output relays (2)
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.
A
C
B
This outline drawing is to provide representative configuration
details for Model series only.
See respective model data sheet for
specific model outline
drawing number.
Do not use for installation design
Weight and dimensions
Model
Dim “A”
mm
Dim “B”
mm
Dim “C”
mm
Set Weight*
dry kg
Set Weight*
wet kg
C2750 D5
5670
2989
3197
17715
18311
C3000D5
5670
2989
3197
17994
18590
*
Note:
Weights represent a set with standard features. See outline drawings for weights of other configurations.
Certifications
This generator set is designed in facilities
certified to ISO 9001 and manufactured in
facilities certified to ISO 9001 or ISO 9002.
This generator set is available with CE
certification.
ISO 8528
This generator set has been designed to
comply with ISO 8528 regulation.
Cummins India Limited
Power Generation Business Unit
Cummins India Office Campus
Tower-A, 6
th
Floor, S. No. 21,
Balewadi, Pune – 411 045 (India)
Email: cpgindia@cummins.com
www.cumminsindia.com
“Our energy working for you.”
© 201
5
Cummins Power Generation Inc. All rights reserved.
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Cummins Power Generation India
Authorised Representative
Cummins Power Generation Offices
Tel.: (080) 2325 9161 / 63, 2325 9165 / 67
Fax: (080) 2325 9164
Tel.: (0172) 224 0371-73
Fax: (0172) 224 0372
Tel.: (044) 2446 8110 / 2446 8113
Fax: (044) 2491 1120
Tel.: (0124) 391 0900-01
Fax : (0124) 391 0916
Tel.: (040) 2340 9970 / 2340 9980
Fax. (040) 2340 9990
Tel.: (0141) 236 4944
Fax: (0141) 403 8794
Bengaluru:
Chandigarh:
Chennai:
Gurgaon:
Hyderabad:
Jaipur:
Kolkata:
Lucknow:
Mohali:
Vadodara:
Tel.: (033) 2287 8065 / 2287 2481
Fax: (033) 2290 3839
Tel.: (0522) 230 5049 / 230 5059
Fax: (0522) 230 5035
Tel.: (0172) 224 0371 / 72 / 73
Fax: (0172) 224 0371 / 72 / 73
Tel.: (0265) 233 0627 / 3053627
Fax: (0265) 234 0623
Cummins Power Generation and Cummins are registered trademarks of Cummins Inc.
PowerCommand, AmpSentry, InPower and are trademarks of Cummins Power
Generation.
Other company product or service names may be trademarks or service
marks of others.
Specifications are subject to change without notice.
PGBU/
00
1
/
QSK
78
2
7
50-
30
00
kVA/
SA
/
NM
/
August
201
5