RM4875 4/98 REV A
Page 1
7.5 A
MP
M
ODULAR
S
WITCH
M
ODE
R
ECTIFIER
RM487.5
Product Data Sheet
DESCRIPTION
The RM487.5 Modular Switch-Mode Rectifier is one of C&D
Technologies' family of rectifiers that may be used in
modular power plants. This unit will function in parallel
with any rectifier with similar current sharing capacities.
This compact, versatile and efficient unit is ideal for use in
advanced telecommunications applications. Its small size
allows the user to plan economically for system expansion
at minimum cost and makes it ideal for use in fiber optic,
microwave and other applications where space is at a
premium.
AGENCY APPROVALS PENDING
FEATURES
SWITCH MODE
>.99 PFC
> 84% EFFICIENCY
AUTOMATIC LOAD SHARING
HOT-SWAP CAPABLE
COMPACT SIZE
SHELF MOUNTED
SOFT START TURN-ON
!
TELECOM BULK POWER RATED
BELLCORE COMPLIANT
PROCESSOR INTELLIGENCE ALLOWS
EXPANSION TO REMOTE CONTROL FEATURES
INFINITE, FULL CURRENT SHORT CIRCUIT
CAPABLE
THD < 5%
Internet: http://www.cdpowerelectronics.com
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Phone: 800.547.2537 Fax: 520.770.9369
Power Electronics Division, Europe
C&D Technologies (Power Electronics) Ltd.
132 Shannon Industrial Estate, Shannon, Co. Clare, Ireland
Tel: +353.61.474.133 Fax:+353.61.474.141
RM4875 4/98 REV A
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MEASUREMENTS OF RM4875
Module
Weight
2.88 lbs.
Height
2.4"
Depth
11.0"
Width
4.75"
Shelf*
Weight
15.5 lbs.
Height
3.5" with rectifiers mounted in shelf
Depth
12" maximum
Width
23" rack mount
Input Specifications
Parameter
Conditions
Min
Typ
Max
Units
Operating Range
45 - 65 Hz, single phase, no taps required
106
264
V
AC
Current
106 V
AC
4.6
A
208 V
AC
2.55
A
240 V
AC
2.12
A
Efficiency
84
%
Power Factor Correction (PFC)
>.99
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.
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.
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.
Current Limit
Upon reaching 110% of rated current, the rectifier will
automatically limit the current down to short circuit
conditions with no fold back.
Safety
UL/CUL Approved: UL 1950/CSA 950.
File Number: E131694
Status Indicator
RFA
Remote Control
Equalize
Front Panel Current Test Jacks
Normal
GENERAL FEATURES
* 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.
RM4875 4/98 REV A
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Output Specifications
Rectifier Failure Alarm (RFA)
Problems occurring because of an unacceptable relation-
ship 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 208-
240V.
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 65C.
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 V
AC
, the rectifier's
operation is automatically power limited.
PROTECTION, ALARM AND CONTROL SYSTEMS
Parameter
Conditions
Min
Typ
Max
Units
Voltage Adjustment Range
float voltage
48
56
V
DC
equalize voltage
52
60
V
DC
Regulation
0-100% load within
specified input voltage and frequency range
.5
%
Load Current
within a 10 - 100% rating
10
%
Hold-Up Time
nominal AC line
>16
mS
Filtering
Voice band
<32
dBrnc
Wide band noise
@ 20 MHz
<250
mV p-p
ENVIRONMENTAL
Temperature
Operating
-40
+65
C
-40
149
F
Storage
-50
+85
C
-58
185
F
Humidity
non-condensing
0
95
%
Altitude
0
7000
ft.
0
2133
m
Heat Dissipation
@54V
264
Btu/hr
Audible Noise
5 ft. from any vertical surface
<55
dBa
RM4875 4/98 REV A
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Mechanical
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.
I+
I-
EQL
FLT
REM
EQL
NORM
RFA
OFF
HFM 48-7.5
2.90
10.955
4.750
2.400
ALL MEASUREMENTS ARE IN INCHES
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