Winco PSS40LS/B - Manual (Page 4)

Page 2 3127-00 60706-162
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 system perform-
ance and reliability.
DESCRIPTION
This package power system is designed to automatically provide
standby power to unattended loads during electrical outages.
Upon an interruption of normal electrical service this package
power system electrical control circuits will automatically start the
engine. The generator will produce electrical power and the
Automatic Transfer Switch (A.T.S.) will automatically transfer the
electrical loads to the engine-generator set. Upon restoration of
normal electrical service the A.T.S. will sense return of the normal
commercial power and retransfer the load back to normal
commercial power source. The engine control circuits will shut off
the fuel supply and the engine ignition system.
These package power systems consist of two major components:
1) WINCO AUTOMATIC TRANSFER SWITCH
(Non-UL model)
The table below shows the different Automatic Switch sizes
typically used with each unit.
CONTACTOR RATING
MODEL VOLTAGE LINE GENERATOR
PSS27LS-3 120/240 230 150
PSS27LS-4 120/208 230 150
PSS27LS-17 120/240 230 150
PSS27LS-18 277/480 * *
PSS40LS-3 120/240 230 230
PSS40LS-4 120/208 230 150
PSS40LS-17 120/240 230 150
PSS40LS-18 277/480 * *
*Special order UL Transfer Switches
These Automatic Transfer Switches (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 contac-
tors are both electrically and mechanically interlocked. A seven
day electronic exerciser clock is installed in the A.T.S. as stan-
dard 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
PSS27LS- The engine generator set consists of a GM 3.0L, I-4
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 variation, from no load to rated load. The 27,000 watt
(27kW) 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). A customer supplied 12 Volt, 650 CCA (BCI group 24)
battery is required to complete the installation. Engine operation
is controlled by an Digital Genset Controller (DGC) mounted in
the engine generator enclosure.
PSS40LS - The engine generator set consists of a GM 4.3L ,V-6
Industrial, 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,
no load to rated load. The 40,000 watt (40kW) 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). A customer
supplied 12 Volt, 650 CCA (BCI group 24) battery is required to
complete the installation. Engine operation is controlled by an
Digital Genset Controller (DGC) mounted in the engine generator
enclosure.
** NOTICE **
These units will automatically transfer if a power outage occurs
while running in an exercise mode.
Digital Genset Controller
The Digital Genset Controller (DGC) is a programmable engine
control module utilizing the latest technology in digital control.
The DCGs in these units have be programmed to meet the more
sophisticated needs of today's generator users.
The following system settings have been programmed into the
DCG:
Start Delay 10 Seconds
Generator Cranking Style Cycle
Number of Cranking Cycles 3
Cycle Crank Duration 15 Seconds
Crank Disconnect 30% of Rated Speed
Cool Down Timer 5 Minutes
High Coolant Lockout 60 Seconds
Low Oil Pressure Delay 10 Seconds