6
OPM-117/D
INTRODUCTION
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 generator 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 applicable engines.
This unit comes factory set for either key start or manual
start. With the DSE 7310 MKII controller used in the manual
start option it is possible to wire the control for remote start.
Wiring instructions can be found further in this manual. The
key start version does not have this option.
PRODUCT DESCRIPTION
The Package Standby System is designed to automatically
provide standby power to unattended loads during
electrical outages. Upon 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 (ATS) 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 commercial power. The Automatic
Transfer Switch will transfer 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 ASCO 185 or ASCO 300 Automatic
Transfer Switch (ATS) designed for inside or outside
installation. The transfer switch is UL1008 approved. A
fourteen day electronic exerciser circuit is installed in the
ATS as standard equipment. The ATS also contains
the power failure sensing circuitry necessary to start
and stop the engine generator set. The transfer switch is
also equipped standard with a 3 second start delay, and
a 15 second transfer delay to allow the engine to warm
up before transferring the load to the generator. When
the line power is restored the ATS has a 5 minute transfer
delay to allow the incoming utility to stabilize before
transferring back to line power and then an additional
1 minute engine cool down delay before the engine
shuts down. Read and understand the ATS owners
manual before installing, servicing or operating the
transfer switch.
MINIMUM
UNIT
VOLTAGE
ATS
AMPERAGE
PSS60-3
120/240
230
PSS60-4
120/208
200
PSS60-17
120/240
200
PSS60-18
277/480
100
PSS90-3
120/240
400
PSS90-4
120/208
400
PSS90-17
120/240
400
PSS90-18
277/480
150
2. ENGINE / GENERATOR
The engine generator set consists of a GM 5.7L, 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
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 available
mounted in a weather 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 a Deep Sea MKII (DSE) engine mounted in the
engine generator enclosure.
NOTICE
These units will automatically transfer if a power outage
occurs while running in an exercise mode.
