Marconi LORAIN RHM800E50, Manual

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3.7
Input Connections: Connect the three phase AC
60 Hz, power leads at terminals . L2 and L3 on
at the side of the rear panel.
3.8
Output Connections: Connect DC output leads to
output terBAT. and -BAT at the right side of the
rear panel.
3.9
Earth Wire) Connections: A
frame ground lug (GND), located near contactor
must be connected to an earth ground (green wire). Do
to power system neutral.
and Control Connections
WARNING
Polarity of the leads is
when connecting leads.
assure polarity.
terminal and terminal board
OPERATION
3.10 Local or Remote Terminals 1
(positive) and 2 (negative) on terminal board TB3 are
provided as sensing These terminals
may be connected at the output of the rectiiier or
extended to sense
voltage at a remote location. To
achieve the most effective regulation of output voltage,
the sense leads should be
to the battery or
power board at which regulation is required.
high shutdown connected
the output
Load This rectifier is equipped a
negative bus sharing which enables to
the load in proportion to the current
any RL or RHM rectifier of
the same output rating. When
have compatible load sharing circuits, a load sharing
connection
be made between the load sharing
terminals of each rectifier. The load terminal of
this is located at terminal board terminal 3.
the Power Data Sheet for recommended of
the load sharing lead and terminal capacity. For
proper operation. if is essential that each be
adjusted for proper voltage and load sharing loop
voltage. Refer to the ADJUSTMENT section for detailed
information.
3.12 Remote Control: The equalize mode of
operation can be remotely controlled by providing a
Section 4367
closed circuit between terminals 4 and 5 of TB3. or by
providing
battery voltage at terminal 4 only. An
open between these or removal of posi-
tive battery voltage from terminal 4 restores
mode control to the FLOAT/EQUALIZE switch on the
rectifier front panel.
3.13 Phase Loss/Reduced Load Alarm: If for any rea-
son, rectifier experiences a high condition caused
by an AC input phase loss an is activated and the
rectifiers output and current will be at a reduced
level. Extended alarm contacts are to provide
closed loop circuits between terminals 26 to 27 and 29
to 30 of terminal block TB3. while open loop circuits are
provided between terminals 25 to 26 and 26 to 29 of ter-
minal
TB3. During operation closed loop
circuits are provided between terminals 25 to 26 and 26
to 29 of terminal block TB3. while open loop circuits are
provided between terminals 26 to 27 and 29 30 Of ter-
minal block TB3.
3.14 Fail During normal oper-
ation, posttiie battery is provided at terminal 12 to
provide an normal operation indication. If a
rectifier failure occurs, battery is
removed TB3 terminal 12 and applied to TB3 ter-
minal 10 to actuate external rectifier fail alarms. A recti-
fier failure condition includes the following operational
modes or alarm conditions:
High voltage alarm
Low voltage
Low current
Partial current operation
Fan fail alarm
over-temperature
Fuse alarm
Manual or automatic removal of AC power,
including commercial power failure
closed loop actuated are desired
and insulate
provided 1 I during a
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