Marconi LORAIN RHM800E50, Manual

Page: 21 / 74

Section 4387
Connect the local sensing leads to TB3 ter-
minals 1 (+) and 2 Insure that is
correct.
Remove the BATTERY DISCONNECT link
to isolate the rectifier from the battery or
load.
Install the option capacitor assembly,
edge connector of regulator and cir-
cuit card A7. Refer to Figure for mount-
ing
DANGER
DC is present at
the output terminals.
Connect a DC ammeter and a resistive test
load in series. Connect the leads of this test
to the output terminal and
either terminal of fuse observing
proper polarity.
Adjust potentiometer
wise. Refer to Figure 5-l for
Adjust the resistive test load for
resistance.
the rectifier by the POWER
to the ON position. Adjust the test
load for a” indication of 4 amperes
(0.5% full load). LOW CURRENT
indicator should be extinguished.
Slowly adjust potentiometer
until the LOW CURRENT ALARM indicator
illuminates.
Adjust the resistive test to slightly
more load on the rectifier output. The LOW
ALARM indicator should extin-
guish.
Reduce the amount load to 4 amperes.
The indicator should illuminate. If neces-
sary, adjust R50 to obtain the indica-
tion at a load of 4 amperes.
Place the BATTERY DISCONNECT liik into
its receptacle, the” immediately place the
POWER switch to the OFF
P)
Disconnect the test leads the external
ammeter and resistive load.
If the is connected a
tery, remove the option capacitor assem-
bly from the
and circuit card
A7.
If remote sensing is used at the
battery or
load. disconnect the sensing
leads TB3 terminals and 2. Connect
these leads to the storage terminals on cir-
cuit card
Connect the remote sensing leads to
terminals 1 (+) and 2
Insure that
is correct.
Start the rectifier by the POWER
to the ON position. Close the meter
and control panels. then note the status of
indicators and
panel meters for proper
operation.
Shutdown
5.9 This adjustment sets the limit at which the recti-
fier is shutdown if a high voltage occurs. This
adjustment is made by adjustment potenti-
ometer on Regulator and Circuit card A7.
Unless otherwise specified, the overvoltage shutdown
adjustment is factory set at 55.0 VDC. To readjust the
overvoltage shutdown limit, the following
a) the by operating the
POWER the Off position.
Open the
meter
and control by
the captive fasteners. Disconnect the
battery by the BAT-
TERY DISCONNECT link.
DANGER
e x t r e m e w h e n p e r f o r m i n g
s t e p c l . a t
the
DC output
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