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TESTING POLICY:
Before any generator is shipped from the factory, it is fully
checked for performance. The generator is loaded to its full
capacity, and the voltage, current, and frequency are carefully
checked.
Rated output of generators is based on engineering tests of
typical units, and is subject to, and limited by, the temperature,
altitude, fuel, and other conditions specified by the manufacturer
of the applicable engines.
INTRODUCTION AND DESCRIPTION
The package standby engine-generator set includes all items
necessary for a completely automatic standby power system as
standard equipment. The entire package is then tested to
insure proper operation of all components and the total systems
performance and reliability.
DESCRIPTION
This packaged power system is designed to automatically
provide standby power to unattended loads during electrical
outages. Upon an interruption of normal electrical service this
packaged power systems electrical control circuits will automati-
cally start the engine. The generator will produce electrical
power and the Automatic Transfer Switch (A.T.S.) will automati-
cally transfer the electrical loads to the engine-generator set.
Upon restoration of normal electrical service the emergency
transfer switch will sense return of the normal commercial
power. The Automatic Transfer Switch will retransfer the load
back to normal commercial power source. The engine control
circuits will begin a 3 minute cool-down cycle, after which the
fuel supply will be shut off and the engine ignition system
disabled.
These packaged power systems consist of two major compo-
nents:
1) AUTOMATIC TRANSFER SWITCH
The table below shows the different Automatic Switch sizes
shipped with each unit.
CONTACTOR RATING
MODEL VOLTAGE LINE GENERATOR
PSS20000LS-3 120/240 225 100
PSS2000OLS-17 120/240 225 100
PSS20000LS-4 120/208 225 100
PSS20000LS-18 120/240 100 100
PSS35000-3 120/240 225 225
PSS35000-4 120/208 225 225
PSS35000-17 120/240 225 225
PSS35000-18 277/480 100 100
PSS70000-3 120/240 400 320
PSS70000-4 120/208 400 320
PSS70000-17 120/240 400 320
PSS70000-18 277/480 225 225
These Automatic Transfer Switchs (A.T.S.) are wall mount
switches designed for inside installation. The A.T.S. consists of
a line side contactor and a generator side contactor. The
contactors are both electrically and mechanically interlocked. An
automatic taper battery trickle charger (40 MA max) and a seven
day electronic exerciser clock are installed in the A.T.S. as
standard equipment. The A.T.S. also contains the power failure
sensing circuitry necessary to send a start/stop signal to the
engine generator set.
2) ENGINE/GENERATOR
PSS20000LS- The engine generator set consists of a Ford
Industrial, four cylinder, liquid cooled engine equipped to run on
L.P./N.G. fuel. The engine operates at 1800 rpm and frequency
regulation is maintained by the electronic governor within .5
cycles varation, from no load to rated load. The 20,000 watt
(20kW) generator is a single bearing, direct drive, rotating field
design. The generator is connected to the engine flywheel via
flexible drive disks. The engine generator is mounted in a drip
proof enclosure for outside installation. Connection boxes are
provided to all customer connections (both AC output and DC
control). Acustomer supplied 12 Volt, 650 CCA (BCI group 24)
battery is required to complete the installation. Engine operation
is controlled by an Electronic Engine Control Module (E.C.M.)
mounted in the engine generator enclosure. The E.C.M. is
equipped standard with a 10 second start delay, 3 minute cool
down delay and cycle cranking, featuring 5 cycles of 12 seconds
on/12 seconds off.
PSS35000 - The engine generator set consists of a Ford Indus-
trial, four cylinder, liquid cooled engine equipped to run on L.P./
N.G. fuel. The engine operates at 3600 rpm and frequency
regulation is maintained by the engine governor within .5 cycles
variation, no load to rated load. The 35,000 watt (35kW) genera-
tor is a single bearing, direct drive, rotating field design. The
generator is connected to the engine flywheel via flexible drive
disks. The engine generator is mounted in a drip proof enclo-
sure for outside installation. Connection boxes are provided to
all customer connections (both AC output and DC control). A
customer supplied 12 Volt, 650 CCA (BCI group 24) battery is
required to complete the installation. Engine operation is
controlled by an Electronic Engine Control Module (E.C.M.)
mounted in the engine generator enclosure. The E.C.M. is
equipped standard with a 10 second start delay, 3 minute cool
down delay and cycle cranking, featuring 5 cycles of 12 seconds
on/12 seconds off.
PSS70000 - The engine generator set consists of a Ford
Industrial, eight cylinder, liquid cooled engine equipped to run
on L.P./N.G. fuel. The engine operates at 1800 rpm and
frequency regulation is maintained by the engine governor within
.5 cycles variation, from no load to rated load. The 70,000 watt
(70kW) generator is a single bearing, direct drive, rotating field
design. The generator is connected to the engine flywheel via
flexible drive disks. The engine generator is mounted in a drip
proof enclosure for outside installation. Connection boxes are
provided to all customer connections (both AC output and DC
control). Acustomer supplied 12 Volt, 650 CCA (BCI group 24)
battery is required to complete the installation. Engine operation
is controlled by an Electronic Engine Control Module (E.C.M.)
mounted in the engine generator enclosure. The E.C.M. is
equipped standard with a 10 second start delay, 3 minute cool
down delay and cycle cranking, featuring 5 cycles of 12 seconds
on/12 seconds off.