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Product Data Sheet
7.5 AMP
MODULAR SWITCH MODE RECTIFIER
RM487.5
FEATURES
• SWITCH MODE
• >.99 PFC
• >84% EFFICIENCY
• AUTOMATIC LOAD SHARING
• HOT-SWAP CAPABLE
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.
• COMPACT SIZE
• SHELF MOUNTED
• SOFT START TURN-ON!
• TELECOM BULK POWER RATED
• BELLCORE COMPLIANT
µµ
•
µPROCESSOR INTELLIGENCE ALLOWS
µµ
EXPANSION TO REMOTE CONTROL FEATURES
• INFINITE, FULL CURRENT SHORT CIRCUIT
CAPABLE
• THD <5%
AGENCY APPROVALS PENDING
RM4875 4/98 REV A
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Phone: 800.547.2537 Fax: 520.770.9369
Internet: http://www.cdpowerelectronics.com
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
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Input Specifications
Parameter Conditions Min Typ Max Units
Operating Range 45 - 65 Hz, single phase, no taps required 106 264 VAC
Current 106 VAC 4.6 A
208 VAC 2.55 A
240 VAC 2.12 A
Efficiency 84 %
Power Factor Correction (PFC) >.99
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
* 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.
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
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RM4875 4/98 REV A
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Output Specifications
Parameter Conditions Min Typ Max Units
Voltage Adjustment Range
float voltage 48 56 VDC
equalize voltage 52 60 VDC
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
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.
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.
RM4875 4/98 REV A
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Mechanical
2.90
ALL MEASUREMENTS ARE IN INCHES
I+
EQL
FLT
REM
HFM 48-7.5
4.750
EQL
NORM
RFA
OFF
I-
2.400
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.
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RM4875 4/98 REV A
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