Cat Electric Motors
®
For Gas Compression
GET TOUGH.
Get power built for your most demanding gas compression applications.
Every Cat® electric motor is tested to make sure it performs reliably
and according to your process requirements. You get high operating
efficiency, low maintenance costs, decreased low noise levels, and no
site emissions.
CAT ELECTRIC MOTORS
C O MI N G S O O N
CN1566
CN5086
CN2086
CN2586
CN3086
CN3586
CN4086
1200 rpm
900 rpm
900 rpm
900 rpm
900 rpm
900 rpm
900 rpm
1500 hp
5000 hp
2000 hp
2500 hp
3000 hp
3500 hp
4000 hp
6
8
8
8
8
8
8
4000 V/60 Hz
4000 V/60 Hz
4000 V/60 Hz
4000 V/60 Hz
4000 V/60 Hz
4000 V/60 Hz
4000 V/60 Hz
Enclosure Type
WP II
WP II
WP II
WP II
WP II
WP II
WP II
Service Factor
(Inverter Fed)
1.15 SF
(1.0 VFD)
1.15 SF
(1.0 VFD)
1.15 SF
(1.0 VFD)
1.15 SF
(1.0 VFD)
1.15 SF
(1.0 VFD)
1.15 SF
(1.0 VFD)
1.15 SF
(1.0 VFD)
Temperature Rise
Class B*
Class B*
Class B*
Class B*
Class B*
Class B*
Class B*
Insulation
Class F
Class F
Class F
Class F
Class F
Class F
Class F
Weight
8289 lb
21,429 lb
12,037 lb
13,735 lb
17,130 lb
18,431 lb
19,268 lb
Rating
Number of Poles
Voltages
* Class B rise at a 1.0 service factor
CAT ELECTRIC MOTORS – HP RANGE
Cat Engine
1000
1500
Cat Engine
2000
CN1566
Electric Motor
Cat Engine
2500
Cat Engine
3000
CN2586
CN2086
Electric Motor
Electric Motor
3500
4000
CN3586
CN3086
Electric Motor
Electric Motor
Cat Engine
4500
5000
CN5086
CN4086
Electric Motor
Electric Motor
5500
POWER THAT NEVER QUITS.
Cat electric motors are of the AC induction type and built for low vibration and high rigidity, so you
get great performance over a long, productive life. Standard features include Class I, Division 2
Groups A, B, C, D (T3) rating and a high strength alloy (42CrMo4) forged, oversized, keyless shaft.
BEARINGS
• Sleeve bearings standard on 2000 hp and above, anti-friction on 1500 hp
(sleeve bearings available as an option)
Motor mechanical structure
Efficiency and reliability start here
• Insulated non-drive end bearings to reduce bearing currents
• Bearing RTDs for temperature monitoring
Each component and each design detail of an ABB high voltage
modular induction motor are engineered and manufactured to
maximize motor performance and provide a uniquely low cost
of ownership over a long and productive operating life.
Rotor
The key to a long rotor operating life is minimal vibration. This
is achieved through robust construction and careful balancing.
ROTORS
selects the
material according
to the demands of
• ABB
Designed
forshaft
minimal
vibration
Stator
The stator core is welded and machined to form a solid and
compact unit that retains its rigidity throughout the life of the
motor. Radial air ducts ensure uniform and efficient cooling.
STATORS
• Welded and machined stator core retains its rigidity
throughout motor life
the application and the ambient conditions in which the motor
is to operate. Squirrel cages are made of copper, copper
alloy or aluminum, depending on the load and customer
requirements. Additional stiffness is provided by fabricated
rotor bars, which enable the motors to withstand long periods
of heavy use. Aluminum bars and end rings are used to
ensure optimal starting characteristics. And, once assembled
each rotor is dynamically balanced at full operating speed in
accordance with the ISO 1940-1 and ISO 11342 standards
on mechanical vibration.
When completely wound and connected, the stator is vacuum
pressure impregnated and cured with ABB’s Micadur®
Compact Industry insulation system, a specially formulated
epoxy resin used by ABB to insulate all its rotating electrical
machines over the past 30 years. Micadur ensures a sealed
and homogeneous insulation system, resulting in low dielectric
losses, high dielectric strength, excellent heat transfer and
the elimination of hazardous internal partial discharges. As
standard, all motors are designed to stay within temperature
Class F.
Rotor
Stator
• Dynamic balancing at full operational speed
• Fabricated copper squirrel cage
• Radial air ducts ensure uniform and efficient cooling
• Oversized, forged, keyless shaft matches most standard
compressors
• 2x RTDs per phase
• Vacuum pressure impregnated with a specially
formulated epoxy resin to ensure a sealed and
homogeneous insulation system that results in high
dielectric strength, excellent heat transfer and the
elimination of hazardous internal partial discharges
OPTIONAL ATTACHMENTS
• Oversized Terminal Box
• Surge Protection
• Differential CTs
• Differential Pressure Switch
• Oil Sump Heater and Controller
• Star Point Connection in Terminal Box
• Blower Motor Cooling
• Right-hand or Left-hand (F1 Or F2) Main
Terminal Box Location
It’s an easy choice.
From selection and installation to ongoing technical support and maintenance,
your Cat dealer is there to help you. Installation drawings, performance data,
manuals, and other documentation will be readily available. Shorter lead times,
industry-leading availability and extended service intervals mean less stress and
lower cost of ownership. Our goal is to make your life easier.
To learn more, call your local Cat dealer today or visit www.cat.com/oilandgas
Caterpillar Oil & Gas
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ASIA PACIFIC
EUROPE, AFRICA, AND MIDDLE EAST
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Oil & Gas
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CHINA
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Beijing 100102, P.R. China
Tel: (+86-10) 5921-0521
Fax: (+86-10) 5921-0022
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Oil & Gas
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Tel: (+49) 431 3995 3004
Fax: (+49) 431 3995 5004
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