CAT C175-20 Technical Manual

Cat® C175-20

Diesel Generator Sets

Image shown may not refl ect actual confi guration

Bore – mm (in) 175 (6.89)

Stroke – mm (in) 220 (8.66)

3

Displacement – L (in

Compression Ratio 15.3:1

Aspiration TA

Fuel System Common Rail

Governor Type ADEM™ A4

)

105.8 (6456)

Standby

60 Hz ekW (kVA)

3500 (4375)

Mission Critical

60 Hz ekW (kVA)

3500 (4375)

Features

Cat® Diesel Engine

• Designed and tested to meet the U.S. EPA
Emergency Stationary (Tier 2) emission
standards

• Reliable performance proven in thousands of
applications worldwide

Generator Set Package

• Accepts 100% block load in one step

• Meets NFPA 110 loading requirements

• Conforms to ISO 8528-5 G3 load acceptance
requirements

• Reliability verified through torsional vibration, fuel
consumption, oil consumption, transient
performance, and endurance testing

Alternators

• Superior motor starting capability minimizes
need for oversizing generator

• Designed to match performance and output
characteristics of Cat diesel engines

Prime

60 Hz ekW (kVA)

3180 (3975)

EMCP 4 Control Panels

• User-friendly interface and navigation

• Scalable system to meet a wide range of
installation requirements

• Expansion modules and site specific
programming for specific customer requirements

Warranty

• 24 months/1000-hour warranty for standby and
mission critical ratings

• 12 months/unlimited hour warranty for prime
and continuous ratings

• Extended service protection is available to
provide extended coverage options

Worldwide Product Support

• Cat dealers have over 1,800 dealer branch
stores operating in 200 countries

• Your local Cat dealer provides extensive
post-sale support, including maintenance and
repair agreements

Emissions Performance

U.S. EPA Certified for Emergency

Stationary Applications (Tier 2)

Cooling System

• Cooling systems available to operate in ambient
temperatures up to 50°C (122°F)

• Tested to ensure proper generator set cooling

LEHE20132-04

Financing

• Caterpillar offers an array of financial products
to help you succeed through financial service
excellence

• Options include loans, finance lease,
operating lease, working capital, and revolving
line of credit

• Contact your local Cat dealer for availability in
your region

Page 1 of 4

C175-20 Diesel Generator Sets
Electric Power

Standard and Optional Equipment

Engine

Air Cleaner

❑ Single element

Muffler

❑ Industrial grade (15 dB)
❑ Residential grade (25 dB)
❑ Critical grade (35 dB)

Starting

❑ Standard batteries
❑ Oversized batteries
❑ Standard electric starter(s)
❑ Heavy duty electric starter(s)
❑ Dual electric starter(s)
❑ Air starter(s)
❑ Jacket water heater

Alternator

Output voltage

❑

416V

❑ 480V
❑ 600V

❑ 6600V
❑ 6900V

❑ 12470V
❑ 4160V ❑ 13200V
❑ 6300V ❑ 13800V

Temperature Rise
(over 40°C ambient)

❑ 125°C/130°C
❑ 120°C
❑ 105°C
❑ 80°C

Winding type

❑ Form wound

Power Termination

Type

us bar

❑ B
❑ Circuit breaker
❑ 4000A

❑

5000A

❑ 6000A
❑ UL
❑ 3-pole

❑ IEC
❑ 4-pole

❑ Electrically operated

Trip Unit

❑ LSI

❑ LSI-G

❑ LSIG-P

Control System

Controller

❑ EMCP 4.2B
❑ EMCP 4.3
❑ EMCP 4.4

Attachments

❑ Local annunciator module
❑ Remote annunciator module
❑ Expansion I/O module
❑ Remote monitoring software

Charging

❑ Battery charger – 20A
❑ Battery charger – 35A
❑ Battery charger – 50A

Vibration Isolators

❑ Rubber
❑ Spring
❑ Seismic rated

Cat Connect

Connectivity

❑ Ethernet
❑ Cellular

Extended Service Options

Terms

❑ 2 year (prime)
❑ 3 year
❑ 5 year
❑ 10 year

Coverage

❑ Silver
❑ Gold
❑ Platinum
❑ Platinum Plus

Ancillary Equipment

❑ Automatic transfer switch

(ATS)

❑ Paralleling switchgear
❑ Paralleling controls

Certifications

❑ IBC seismic certification
❑ HCAI pre-approval

Excitation

❑ Permanent magnet (PM)

Attachments

❑ Anti-condensation heater
❑ Stator and bearing temperature

xxmonitoring and protection

Note: Some options may not be available on all models. Certifi cations may not be

available with all model confi gurations. Consult factory for availability.

LEHE20132-04

Page 2 of 4

C175-20 Diesel Generator Sets
Electric Power

Package Performance

Performance

Frequency 60 Hz 60 Hz 60 Hz

Gen set power rating with fan

Gen set power rating with fan @

0.8 power factor

Emissions EPA ESE (Tier 2) EPA ESE (Tier 2) EPA ESE (Tier 2)

Performance number

Standby Mission Critical Prime

3500 ekW 3500 ekW 3180 ekW

4375 kVA 4375 kVA 3975 kVA

EM5747-01 EM5749-01 EM5751-01

Fuel Consumption

100% load with fan – L/hr (gal/hr)

75% load with fan – L/hr (gal/hr)

50% load with fan – L/hr (gal/hr)

25% load with fan – L/hr (gal/hr)

914.3 (241.5) 834.0 (220.3)

707.7 (186.9) 667.1 (176.2)

561.0 (148.2) 515.0 (136.0)

342.9 (90.6) 317.1 (83.8)

914.3 (241.5)

707.7 (186.9)

561.0 (148.2)

342.9 (90.6)

Cooling System

Radiator air flow restriction (system) –
kPa (in. water)

Radiator air flow – m

Engine coolant capacity – L (gal) 440.0 (116.2) 440.0 (116.2)

Radiator coolant capacity – L (gal)

Total coolant capacity – L (gal) 1285 (339.5) 1285 (339.5)

3

/min (cfm) 3426 (120988) 3426 (120988)

0.12 (0.48) 0.12 (0.48)

845.0

(223.2) (223.2)

0.12 (0.48)

3426 (120988)

440.0 (116.2)

845.0

1285 (339.5)

(223.2)

845.0

Inlet Air

Combustion air inlet flow rate – m3/min (cfm)

311.7 (11006.6) 291.6 (10298.0)

311.7 (11006.6)

Exhaust System

Exhaust stack gas temperature – °C (°F)

Exhaust gas flow rate – m3/min (cfm)

Exhaust system backpressure (maximum
allowable) – kPa (in. water)

461.6 (862.8) 455.2 (851.4)

790.1 (27899.2) 729.5 (25757.6)

6.7 (27.0) 6.7 (27.0)

461.6 (862.8)

790.1 (27899.2)

6.7 (27.0)

Heat Rejection

Heat rejection to jacket water – kW (Btu/min)

Heat rejection to exhaust (total) – kW (Btu/min)

Heat rejection to aftercooler – kW (Btu/min)

Heat rejection to atmosphere from engine –
kW (Btu/min)

Heat rejection from alternator – kW (Btu/min)

1884 (107135) 1676 (95336)

3477 (197713) 3186 (181182)

374 (21258) 288 (16392)

197 (11211) 189 (10735)

(10697)

188

1884 (107135)

3477 (197713)

374 (21258)

197 (11211)

188 (10697)

171 (9725)

Emissions* (Nominal)

NOx mg/Nm3 (g/hp-h) 2943.4 (6.03) 2729.6 (5.70)

CO mg/Nm3 (g/hp-h) 142.1 (0.35) 185.5 (0.44)

HC mg/Nm3 (g/hp-h) 16.2 (0.04) 16.9 (0.05)

PM mg/Nm3 (g/hp-h) 15.5 (0.04) 16.7 (0.04)

2943.4 (6.03)

142.1 (0.35)

16.2 (0.04)

15.5 (0.04)

Emissions* (Potential Site Variation)

NOx mg/Nm3 (g/hp-h) 3532.0 (7.23) 3275.6 (6.84)

CO mg/Nm3 (g/hp-h) 255.7 (0.63) 333.9 (0.79)

HC mg/Nm3 (g/hp-h) 21.5 (0.06) 22.5 (0.06)

PM mg/Nm3 (g/hp-h) 21.7 (0.06) 23.3 (0.06)

*mg/Nm3 levels are corrected to 5% O2. Contact your local Cat dealer for further information.

3532.0 (7.23)

255.7 (0.63)

21.5 (0.06)

21.7 (0.06)

LEHE20132-04

Page 3 of 4

C175-20 Diesel Generator Sets
Electric Power

Weights and Dimensions

C

A

Dim “A”

mm (in)

8409 (331.1) 3264 (128.5) 3828 (150.7) 29 870 (65,850)

Note: For reference only. Do not use for installation design. Contact your local Cat dealer for precise weights and dimensions.

Dim “B”

mm (in)

Dim “C”

mm (in)

B

Dry Weight

kg (lb)

Ratings Defi nitions

Standby

Output available with varying load for the duration of
the interruption of the normal source power. Average
power output is 70% of the standby rated ekW. Typical
operation is 200 hours per year, with maximum expected
usage of 500 hours per year.

Mission Critical

Output available with varying load for the duration of
the interruption of the normal source power. Average
power output is 85% of the mission critical rated ekW.
Typical peak demand up to 100% of rated power for up
to 5% of the operating time. Typical operation is 200
hours per year, with maximum expected usage of 500
hours per year.

Prime

Output available with varying load for an unlimited time.
Average power output is 70% of the prime power rating.
Typical peak demand is 100% of prime rated ekW
with 10% overload capability for emergency use for a
maximum of 1 hour in 12. Overload operation cannot
exceed 25 hours per year.

Applicable Codes and Standards

AS 1359, CSA C22.2 No. 100-04, UL 142, UL 489,
UL 869, UL 2200, IBC, IEC 60034-1, ISO 3046,
ISO 8528, NEMA MG1-22, NEMA MG1-33,
2014/35/EU, 2006/42/EC, 2014/30/EU and
facilitates compliance to NFPA 37, NFPA 70,
NFPA 99, NFPA 110.

Note: Codes may not be available in all model

configurations. Please consult your local Cat
dealer for availability.

Data Center Applications

• All ratings Tier III/Tier IV compliant per Uptime

Institute requirements.

• All ratings ANSI/TIA-942 compliant for Rated-1

through Rated-4 data centers.

Fuel Rates

Fuel consumption reported in accordance with ISO
3046-1, based on fuel oil of 35º API [16°C (60ºF)]
gravity having an LHV of 42,780 kJ/kg (18,390 Btu/lb)
when used at 15ºC (59ºF) and weighing 850 g/liter
(7.0936 lbs/U.S. gal.) All fuel consumption values refer
to rated engine power.

C175-20 PGAL
LEHE20132-04 (02/23)

www.cat.com/electricpower

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Materials and specifications are subject to change without notice.

The International System of Units (SI) is used in this publication.

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