TM 5-6115-465-12
TO-35C2-3-446-1
NAVFAC P-8-625-12
TM 06858B/06858D-12
f. Connection for Parallel Operation.
(5) Install another coupling and driving stud.
Drive the ground rod down until the new coupling is
just above ground surface.
WARNING
(6) Use a minimum of 3 sections of 3 foot length
ground rods. Add additional sections until ound rod
Do not attempt to connect paralleling
has been driven sufficiently deep to provide effective
leads while either or both of the units
ground.
to be paralleled is operating. Make
sure that there is no input to the load
(7) Remove driving stud and top coupling.
f r o m another source. Failure to
observe this warning may result in
(8) Connect clamp and ground cable to ground
death by electrocution.
rod and securely tighten screw.
(1) Identify the units to be paralleled as Unit
e. Load Connection.
No. 1, Unit No. 2, and Unit No. 3.
(2) If the generator sets are to share a load
WARNING
greater than the KW rating of a single unit, connect
load terminal boards as shown in figure 2-4.
Lethal voltages are present at the
NOTE
load connection board of the
generator set during operation, Do
Paralleling of precise generator sets
not attempt to connector disconnect
load leads while the generator set is
requires that paralleling cables be in-
stalled and the shorting plug in the
operating. Do not attempt to connect
lower paralleling receptacle of each
or disconnect load leads with the
generator set be removed. Paralleling
generator set shut down and the load
of utility generator sets requires that
connected to another power source, or
the shorting plugs be installed on all
while the enerator set is parallel to
sets.
another which is operating.
(1) Open the left access door to the generator
com artment (figure 1-2) and remove the safety from
WARNING
the load terminal board (figure 1-2).
The generator sets must be connected
(2) Insert load leads through plate and sleeve
to the load through individual circuit
assembly (figure 1-2) located to the left of the
interrupters.
generator set air intake.
(3) Situations which require that continuous
(3) A 208 or 416 Vac three phase load may be
power be supplied to the load necessitate that load ter-
connected between terminals marked L1, L2, L3 and
minal boards of parallel generators be connected as
shown in figure 2-5. This arrangement allows transfer
of the load from generator set to the other without
NOTE
interrupting power to the load.
The load terminals will accommodate
g. Auxiliary Fuel Source Connection.
2-wire single phase and 4-wire, 3
phase loads. One or more single phase
( 1 ) Connect the auxiliary fuel line to the
loads can be served alone or in com-
generator set auxiliary fuel supply connection (figure
binations with 3 phase loads; but the
load on any one phase must not ex-
ceed 100 ercent of the current rating
(2) Connect the auxiliary fuel line to the aux-
of that phase.
iliary fuel source.
(4) Phase rotation for three phase loads is L1,
(3) Position the fuel selector valve (figure 1-2) in
L2, L3.
the AUXILIARY position.
NOTE
2-4. GENERATOR SET CONVERSION
INSTRUCTIONS.
After load connections tighten ter-
m i n a l binding nuts with plastic/
a. To convert the generator set for operation at
phenolic box end wrench and install
120/208 Vac or 240/416 Vac, proceed as follows.
safety cover, refer to paragraph 2-4
a n d check that the reconnection
board is set for proper voltage.
Change 14
