Winco PSS12/A - Manual (Page 4)

PAGE 2 60706-147 0306-01
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 system includes all items
necessary for a completely automatic standby power
system as standard equipment.
DESCRIPTION
This packaged standby system is designed to auto-
matically provide standby power to unattended loads
during electrical outages. Upon an interruption of normal
electrical service the packaged standby 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 emergency
transfer switch will sense return of the normal commer-
cial power. The Automatic Transfer Switch will retransfer
the load back to the normal commercial power source.
The engine control circuits will begin a cool-down cycle,
after which the fuel supply will be shut off and the engine
ignition system disabled.
These packaged standby systems consist of two
major components:
1) AUTOMATIC TRANSFER SWITCH
A wall mounted Automatic Transfer Switch (A.T.S.)
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. A seven day electronic exerciser clock is
installed in the A.T.S. as standard equipment. The A.T.S.
also contains the power failure sensing circuitry neces-
sary to send a start/stop signal to the engine generator
set.
Standard Automatic Transfer Switch Sizes
(NON-UL)
UNIT LINE SIDE GENERATOR
CONTACTOR SIDE CONTACTOR
PSS8.5 110 AMPS 60 AMPS
PSS10 110 AMPS 60 AMPS
PSS12 110 AMPS 60 AMPS
Optional UL Automatic Transfer Switch Sizes
UNIT LINE SIDE GENERATOR
CONTACTOR SIDE CONTACTOR
PSS8.5 100 AMPS 100 AMPS
PSS10 100 AMPS 100 AMPS
PSS12 100 AMPS 100 AMPS
or 200 AMPS 200 AMPS
Both the 100 amps and the 200 amps UL Switches are
available in single and three phase.
Additional optional A.T.S. sizes are available to meet
specific needs. Contact your local WINCO dealer, or the
WINCO Sales Department for a quote.
2) ENGINE/GENERATOR
The engine generator set consists of a Briggs &
Stratton Vanguard, two cylinder, air cooled engine. The
engine is factory equipped and EPA certified to run on L.P.
or N.G. fuel. The engine operates at 3600 rpm and
frequency regulation is maintained by the engine
governor within 4 cycles variation (62.5 Hz - 58.5 Hz) from
no load to rated load. The generator is a brushless,
single bearing, direct drive, rotating field design. The
generator is connected to the engine’s tapered (quill)
crankshaft extension. The engine generator is mounted
in a NEMA 3R enclosure for outside installation. Con-
nection boxes are provided for all customer connections
(both AC output and DC control). A customer supplied
235 CCA (BCI group U1) 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, 90 second cool
down delay and cycle cranking.
** NOTICE **
This unit will automatically transfer if a power outage
occurs while running in an exercise mode.
SPECIFICATIONS
GENERATOR
MODEL WATTS* VOLTS AMPS* HZ pH RPM
PSS8.5 8,400 120/240 35.0 60 1 3600
PSS10 9,600 120/240 40.0 60 1 3600
PSS12 12,000 120/240 50.0 60 1 3600
*Derate 15% for Natural Gas operation. Derate 3.5%
per 1000 feet elevation above sea level.
FUEL CONSUMPTION
NG L.P. VAPOR
1000 BTU/CU FT 2520 BTU/CUFT
MODEL CF/HR BTU/HR #/HR* GAL/HR CF/HR BTU/HR*
PSS8.5 132 132,000 6.7 1.6 63.0 158,760
PSS10 162 162,000 7.7 1.84 72.0 181,440
PSS12 195 195,000 9.2 2.2 84.0 211,650
*Based on full load operation