Gas
Generator
Set
G3406
1800 rpm
150 ekW 60 Hz
Standby Power — Propane
CATERPILLAR® ENGINE SPECIFICATIONS
I-6, 4-Stroke-Cycle Naturally Aspirated
Bore — in (mm) . . . . . . . . . . . . . . . . . . . . 5.4 (137)
Stroke — in (mm) . . . . . . . . . . . . . . . . . . 6.5 (164)
Displacement — cu in (L) . . . . . . . . . . 14.6 (893)
Compression ratio . . . . . . . . . . . . . . . . . . . . 10.3:1
Shown with
Optional Equipment
FEATURES
■
CAT ® GENERATOR SETS
Factory designed, certified prototype tested
with torsional analysis. Production tested and
delivered to you in a package that is ready to
be connected to your fuel and power lines.
EPG designer computer sizing available.
Supported 100% by your Caterpillar dealer
with warranty on parts and labor; extended
warranty available in some areas. The
generator set was designed and manufactured
in an ISO 9001 compliant facility. Generator
set and components meet or exceed the
following: AS1359, AS2789, BS4999, DIN6271,
DIN6280, IEC 34/1, ISO3046/1, NEMA MG1-22.
■
DIESEL STRENGTH BUILT IN
Blocks, crankshafts, liners, and connecting
rods are common with Cat diesel engines. Gas
engine pressures are 40%-50% lower, resulting
in extra long life with the conomy of the
gaseous fuel.
■
CATERPILLAR® SR4B GENERATOR
Single bearing, wye connected, static
regulated brushless excited generator
designed to match the performance and
output characteristics of the Caterpillar engine
that drives it.
■
EXCLUSIVE CATERPILLAR
VOLTAGE REGULATOR
Three-phase sensing and Volts per Hertz
regulation with constant voltage in the normal
operating range gives precise control and
excellent load acceptance.
CATERPILLAR® SR4B GENERATOR
Type . . . . . Brushless, revolving field, permanent
magnet excitation, solid state
automatic voltage regulator
Construction . . . . Single bearing, close coupled,
three phase, wye connected, Class H
insulation (rotor and stator)
Enclosure. . . . . . . . . . . . Drip proof IP 22, guarded
Alignment . . . . . . . . . . . . . . . Caterpillar pilot shaft
Overspeed capability . . . . . . . . . . . . . . . . . . . . 150%
Paralleling capability . . Optional with adjustable
voltage droop – requires paralleling kit
Voltage regulator . . . . . . . . 3-phase sensing with
Volts-per-Hertz response
Voltage regulation . . . . . . . . . . . Less than ± 1/2%
(steady state) and constant load
Voltage gain . . . . . Adjustable to compensate for
engine speed droop and line loss
Wave form. . . . . . . . . . . . . Less than 5% deviation
TIF . . . . . . . . . . . . . . Less than 50, meets ISO8528
THD . . . . . . . . . . . . Less than 5%, meets ISO8528
CATERPILLAR CONTROL PANEL
24 Volt DC Control
Terminal box mounted
Vibration isolated
NEMA 1/IP 22 enclosure
Electrically dead front
Lockable door
Generator instruments meet ANSI C-39-1
Voltages Available
60 Hz
240, 480
(Adjustable a minimum of ±10%)
Other voltages available – consult your Caterpillar dealer.
Some voltages require derating.
G3406
GAS GENERATOR SET — PROPANE
STANDARD EQUIPMENT
Engine
Air cleaner, normal duty with
rain cap and service indicator
Base
Breather, crankcase
Cooler, lubricating oil, RH
EMCP II, generator control,
engine start/stop logic
Filter, lubricating oil, RH
Flywheel housing, SAE No. 0
Governor, Woodward Flo-Tech 68
Ignition system
Altronic 5
Jacket water heater
Lifting eyes
Manifold, exhaust,
watercooled
Paint, Caterpillar yellow
Protection devices, see
controls
Pumps,
jacket water, gear driven
Radiator, integral expansion
tank
SAE standard rotation
Starter, 24 Volt DC
Supports, engine
OPTIONAL EQUIPMENT
Thermostats and housing
Torsional vibration damper
Valve, 24V gas shutoff
Vaporizer/Regulator
Generator
All metal components are
plated or painted
Optimum winding pitch for
minimum total harmonic
distortion
Permanent magnet excitation
(300% short circuit current)
Standards: meets or exceeds
the requirements of
IEC 34-1, NEMA MG1-22,
BS4999, VDE0530, UTE5100,
CSA 22.2, ISO 8528-3
Three-phase sensing
automatic voltage regulator
VR3 voltage regulator
Wet layer wound rotors
individually tested to 125%
overspeed; prototypes to
150% @ 338° F (170° C)
Windings coated with a
fungus-resistant varnish
Engine
Battery, tray, cables, and
chargers
Charging alternator systems
Enclosure
Muffler
Generator
DVR – digital voltage
regulator, adjustable
volts/H3 regulation for large
block loads. Diode monitor,
under- and over-voltage
protection
Extra dips and bakes of
insulating resins
Manual voltage control
RFI filter – 82/499/EEC,
VDE 875/10.84 A2 Level N,
BS800 standards, and
MIL-STD-461B (conducted,
radiated, and susceptibility
Self excitation
VR3F for enhanced transient
response and block loading
ENGINE AND GENERATOR CONTROLS
The EMCP II comes complete
with many control features
competitive manufacturers
only offer as options.
Standard Features
Adjustable purge cycle from
0-20 seconds (factory set at
5 seconds)
Auto start-stop engine control
with programmable safety
shutdowns
Cooldown timer, adjustable
from 0 to 30 minutes
Cycle cranking, with adjustable
crank/rest periods of 1 to 60
seconds
Delayed ignition (magneto)
“kill” after gas valve is
closed. Five second delay
Emergency stop button
Flashing LED indicators for
protection and diagnostics,
including: low oil pressure,
high coolant temperature,
low coolant level (when
optional coolant sensor is
installed), overspeed,
overcrank, emergency stop,
fault shutdown, spare
fault alarm
Generator voltage adjust
potentiometer
Indicator/display test switch
LCD digital readout for:
engine oil pressure, coolant
temperature, engine rpm,
system DC volts, generator
AC volts and amps, and
generator frequency
NEMA 1/IP 22 enclosure
Programmable for energize to
shutoff or energize to run
Spare alarm and fault inputs
for customer use
Optional Features
Alarm modules and remote
annunciators to meet NFPA
99 or NFPA 110 codes
Auxiliary relay
Coolant loss sensor
Customer interface module
Dustproof enclosure
Frequency adjust
potentiometer
Panel lights
Reverse power relay
Synchronizing modules
G3406
GAS GENERATOR SET — PROPANE
TECHNICAL DATA
G3406 Standby Power Gas Generator Sets — 1800 rpm
Power Rating @ 0.8 PF with (without) Fan
ekW
150 (160)
Power Rating @ 0.8 PF with (without) Fan
kV•A
187 (200)
Generator Frame Size
447
Engine Lubricating Oil Capacity
gal
10
System Backpressure (Max Allowable)
in water
12
Exhaust Flange Size — (Internal Diameter)
in
5
Length
in
140.0
Width
in
56.0
Height
in
80.25
Shipping Weight
lbs
5800
Engine Coolant Capacity with Radiator
gal
22.5
100% Load
Fuel Consumption (100% load) with Fan
per ISO3046/1: +5%, -0% tolerance
BTU/bhp-hr
7730
Motor Starting (35% voltage dip)
SkVA (volt)
795 (480)
Combustion Air Inlet Flow Rate
ft3/min
353.6
Exhaust Gas Flow Rate (at stack temp)
ft /min
1095
Air Flow Through Radiator (Radiator
only has static pressure of .84 in. water)
ft3/min
21 200
Heat Rejection to Exhaust (total)
BTU/min
7987
Heat Rejection to Coolant
BTU/min
10 321
Heat Rejection to Atmosphere from Engine
BTU/min
1175
Heat Rejection to Atmosphere from Generator
BTU/min
478
Exhaust Gas Stack Temperature
Deg F
1143
Deration for Engine
Altitude – 3.5% per 500 feet above
2% per 10° F above
ft
Deg F
500
110
* Note: For permitting see TMI data.
3
G3406
Fuel – Liquid propane only
Base – Heavy duty skidable base
Rating Information
150 ekW up to 500 ft (152 m) and 110° F (43° C).
Above these conditions, see engine power
deration
Generator temperature across stator is a
maximum of 221° F (105° C). Generator
oversized for motor starting and efficiency
GAS GENERATOR SET — PROPANE
Cooling system
Sized for 50/50 glycol, 125° F (52° C) ambient
and 600 ft (183 m) without enclosure
Derate ambient capability by 0.5° F (0.28° C)
for every 200 ft (61 m) above 500 ft (152 m)
without enclosure
For Caterpillar enclosure, derate ambient
capability 7° F (4° C) for all conditions
03
02
STANDBY GENERATOR SET PACKAGE — PROPANE
80.25 (2038.3)
01
01
140.00 (3556.0)
01
01
02
03
56.00 (1422.4)
Left Side View
01
Centerline of Crankshaft
02
Centerline of Engine
03
Rear Face of Cylinder Block
Rear View
See General Dimension Drawing
123-8787 for additional information.
Note: General configuration not to be used for installation.
Dimensions are in in (mm).
RATING DEFINITIONS AND CONDITIONS
Ratings are based on SAE J1349 standard
conditions of 29.61 in Hg (100 kPa) and
77° F (25° C). These ratings also apply at
ISO3046/1, DIN6271, and BS5514 standard
conditions of 29.61 in Hg (100 kPa) and
81° F (27° C); and API 7B-11C standard
conditions of 29.38 in Hg (99 kPa) and
85° F (29° C) also apply.
Naturally aspirated engines apply to 500 ft
(150 m) and 77° F (25° C). For applications which
exceed these limits consult your Caterpillar
dealer.
Ratings are based on dry natural gas having a
low heat value of 905 btu/ft3 (35.22 MJ/m3 ).
Variations in altitude, temperature, and gas
composition from standard conditions may
require a reduction in engine horsepower;
consult your Caterpiller dealer.
Materials and specifications are subject to change without notice.
LEHX7575
Standby — Output available with varying load
for the duration of the interruption of the
normal source power. Fuel stop power in
accordance with ISO3046/1, AS2789, DIN6271,
and BS5514.
The International System of Units (SI) is used in this publication.
© 1997 Caterpillar Inc.
Printed in U.S.A.
All rights reserved.