Delta GR150 Operations Instructions Page 13

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60708-153
Page 11
1285-00
*************
***** WARNING *****
*************
A main line circuit breaker has been provided inside the
generator housing. During all wiring installations make sure
the breaker is in the OFF position and the generator opera-
tion switch is in the OFF position.
*************
***** WARNING *****
*************
EQUIPMENT DAMAGE - When installing a Three Phase 240
volt system be sure you know which lead is the high voltage
"wild" leg (208 Volt line to neutral). The generator normally
carries the high voltage on the G2 lead.
All wires should be installed in rigid or flexible conduit. (Knock-
outs are provided in the control box).
See the manual shipped with the Automatic Transfer Switch for
connection locations in the switch. Connections in each switch
will vary depending on the type of switch and the manufacturer.
GROUNDING
A grounding lug has been provided on the engine generator set
and the generator set must be properly grounded to good earth
ground. Generally a 8 foot copper rod driven into the earth will
provide a proper earth ground.
D.C. ELECTRICAL
CONNECTIONS
All DC connections are completed on the terminal block located
just below the engine control (see layout on page 3, reference M).
All DC connections must be run in separate conduit. You can
not mix AC and DC leads in the same conduit. Some units may
have additional connections on this terminal box for specific
customer requirements.
CONNECTION BOX TERMINALS
Wire size requirements for each of the connections may
vary but terminal lugs should be used for all connections.
Torque spec for terminal lugs is 9 in. lbs.
A - Customer Remote Start CONNECTIONS TERMINALS. The
two remote start leads from the Automatic Transfer Switch are
connected to the two terminals marked 1 & 23. The wire in
terminal labeled #1 is Battery Negative and the wire in the
terminal labeled #23 is your Remote Start lead. Closing these two
leads together will signal the DSE 7X10 to go into an auto-start
mode and start up the engine generator.
Depending on the distance, 14 to 16 gauge stranded wire should
be used. It is suggested that these wires be labeled S1 and S23.
The terminal blocks are designed to use terminal lugs on all
wires and the screws should be torqued to 9.6 in. lbs.
Note: Any relay closure can be used to start and stop this
generator. As long as the contact stays closed the engine
generator set will continue to run. Once the relay is opened
the unit will shut down and remain in the standby mode until
the remote start relay is closed again.
B - ESTOP- & ESTOP+. Remote Emergency Stop terminals.
These two terminals are shipped with a jumper installed. If your
application requires the installation of a Remote Emergency Stop
switch, remove the jumper and wire your switch to these termi-
nals. This unit will not start and run without either the jumper
installed or a remote N/C switch installed..
C. - Battery Charger Failure. Battery charger failure relay input
from remote battery charger to DSE7X11 controller.
D - Remote Display Panel Interface Terminals. These interface
terminals are prewired to allow for the connection of a remote
display. This display allows for the remote annunciation of alarms
at a location such as a nurses station or a control room. This
display can used to meet the remote annunciation requirements
of NFPA 110 standards. (This feature meets the annunciation
requirements in applications requiring NFPA110 level one
protection.)
DC Interconnections to the
Automatic Transfer Switch
Two control wires are required between the A.T.S. panel and the
generator control terminal box. Depending on the distance, 14 to
16 gauge stranded wire should be used. These wires should be
labeled S1 (ground) and S23 (start).
*************
***** WARNING *****
*************
Be sure Engine Generator is in the "OFF" position before
you make any DC interconnections.
*******CAUTION******
Never run the AC and DC wiring in the same conduit.
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