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4ECHNOLOGIES FAMILY OF RECTIFIERS THAT MAY BE USED IN
MODULAR POWER PLANTS 4HIS UNIT WILL FUNCTION IN PARALLEL
WITH ANY RECTIFIER WITH SIMILAR CURRENT SHARING CAPACITIES
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Input Specifications
Parameter
Operating Range
Current
Conditions
Min
45 - 65 Hz, single phase, no taps required
106 VAC
208 VAC
106
240 VAC
Efficiency
Power Factor Correction (PFC)
Typ
Max
Units
264
4.6
VAC
A
2.55
2.12
84
A
A
%
>.99
MEASUREMENTS OF RM4875
Module
Shelf*
Weight
Height
Depth
Width
2.88 lbs.
2.4”
11.0”
4.75”
Weight
Height
Depth
Width
15.5 lbs.
3.5” with rectifiers mounted in shelf
12” maximum
23” rack mount
* These measurements are specifically for the AGM25 List 1 up to 8 quantity RM 487.5.
Please contact factory for other shelf and power plant options.
GENERAL FEATURES
Hot Swappable Modules
These shelf-mounted modules are easy and safe to install
or remove while system is operational without affecting
the overall system’s performance.
Current Limit
Upon reaching 110% of rated current, the rectifier will
automatically limit the current down to short circuit
conditions with no fold back.
Parallel Operation and Automatic Load Sharing
Forced share connection is made via a hard wire. Sharing
is within ±10% of the average current for the load applied.
Safety
UL/CUL Approved: UL 1950/CSA 950.
File Number: E131694
Remote Control Enable Signal
The rectifier’s output voltage control may be changed from
internal float and equalize pots to external remote control
though a digital ground signal.
Status Indicator
RFA
Remote Control
Equalize
Front Panel Current Test Jacks
Normal
Page 2
RM4875 4/98 REV A
Output Specifications
Parameter
Conditions
Min
Typ
Max
Units
Voltage Adjustment Range
Regulation
Load Current
Hold-Up Time
Filtering
Voice band
Wide band noise
float voltage
48
56
VDC
equalize voltage
0-100% load within
specified input voltage and frequency range
within a 10 - 100% rating
nominal AC line
52
60
VDC
>16
%
%
mS
@ 20 MHz
< 32
<250
dBrnc
mV p-p
ENVIRONMENTAL
Temperature
Operating
-40
-40
-50
-58
0
0
0
Storage
Humidity
Altitude
Heat Dissipation
Audible Noise
± .5
±10
non-condensing
@54V
5 ft. from any vertical surface
+65
149
+85
185
95
7000
2133
264
<55
°C
°F
°C
°F
%
ft.
m
Btu/hr
dBa
PROTECTION, ALARM AND CONTROL SYSTEMS
Rectifier Failure Alarm (RFA)
Problems occurring because of an unacceptable relationship between the output power and load conditions will
cause a Rectifier Failure Alarm (RFA). This alarm consists
of a red LED and a flashing green OK LED. Conditions
which may lead to an RFA are:
Low Current - Output current has decreased to below
5% of its rated value.
Unit Shutdown - Any shutdown occurrence due to
overvoltage, external shutdown command, unacceptable
ambient temperature conditions or low AC input voltage.
Load Sharing Terminal Pin Out Of Range - The
terminal pin is out of range.
Remote Control Terminal Out Of Range - The remote
control terminal pins are out of range.
Line Sag - This condition occurs when the nominal
voltage decreases below 180V. Normal range is 208240V.
Fan Malfunction - The fan has stopped operating or is
not providing the airflow needed to cool the unit.
Over Temperature - The ambient temperature has
exceeded 65°C.
RM4875 4/98 REV A
High Voltage Shutdown (HVSD)
The unit’s built-in high voltage limit is permanently set at
60V. When internal shutdown occurs, the unit may be
restarted by a local switch or by a remote signal.
Surge Protection
The unit will withstand lightning and input surges of
6000V/3000A.
Under Voltage Protection
When input voltage is below 105 VAC, the rectifier’s
operation is automatically power limited.
Page 3
Mechanical
ALL MEASUREMENTS ARE IN INCHES
2.90
I+
EQL
FLT
REM
EQL
NORM
RFA
OFF
2.400
I-
HFM 48-7.5
4.750
10.955
Standard Options are shown, consult factory for other available options.
The information provided herein is believed to be reliable; however, C&D Technologies assumes no responsibility for inaccuracies or omissions. C&D Technologies assumes no
responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No
patent rights or licenses to any of the circuits described herein are implied or granted to any third party. C&D Technologies does not authorize or warrant any C&D Technologies product
for use in life support devices/systems or in aircraft control applications.
Page 4
RM4875 4/98 REV A