Marconi LORAIN RHM800E50, Руководство пользователя

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Close the meter and control panels, then
start the rectifier by placing the POWER
switch to the ON position.
Alarm Adiustment
5.6 The high voltage adjustment potentiometer
located on Regulator and Circuit card
sets the value at which light emitting diode HIGH VOLT-
AGE ALARM illuminates and an external
is acti-
vated, connected. Unless otherwise specified, the
high
is factory for 57.6 VDC. To
readjust this limit, observe the following procedure:
Turn off the by operating the
POWER to the OFF position.
Open the meter panels by loos.
ening the Disconnect the
rectifier battery by removing the
TERY DISCONNECT link.
DANGER
when performing
step DC is
Connect an adjustable DC supply capable of
supplying
volts DC to
terminal (+) and either terminal of fuse
proper polarity.
Adjust potentiometer R39 clockwise.
Refer to Figure for location.
Turn on the DC supply and adjust
output voltage to the desired high
value.
capacitors charge when the
DC is on. Allow
seconds to before
adjust-
ment to the desired
high
Slowly adjust potentiometer R39 counter-
clockwise until light
diode HIGH
VOLTAGE ALARM on the front panel illumi-
nates.
As a check, decrease the output of
the external DC supply; light
HIGH VOLTAGE ALARM should extinguish.
Section 4387
Slowly increase the until light emit-
ting diode HIGH VOLTAGE ALARM illumi-
nates. Repeat Steps and g). if necessary,
until the
is activated at the proper
age.
Adjust power output voltage to
exactly the same value of battery voltage at
the
output terminals. These volt-
ages should be measured with a digital
timeter.
With power supply output voltage property
adjusted, inset-l the
DISCON-
NECT link.
off the external DC power supply, then
disconnect the test leads.
Close the meter and control panels,
start the rectifier by placing the POWER
to the ON
Current Alarm
5.7 The current alarm adjustment potentiometer
located on and Alarm card
sets the value at which light diode LOW CUR-
RENT ALARM illuminates and an external low current
alarm is activated, if connected. Unless otherwise
specified, the low current alarm is factory
set to provide an when output decreases
below 0.5% of rated To readjust the low current
alarm, observe the following procedure:
This procedure is
performed
with
fatal
shock p-t
and in other of the
when
the is caution
that with any electrical
terminations
Turn off the by operating the
POWER to the OFF position. Open
the meter and control panels.
If remote sensing is used in the rectifier, dis-
connect and temporarily insulate the remote
sensing leads. These leads are connected
at
terminals 1 and 2.
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