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Product Data Sheet
MODULAR SWITCHED MODE RECTIFIER
30 AMP
RM4830
FEATURES
• SWITCHED MODE
• >.99 PFC
• >85% EFFICIENCY
• HOT-SWAP CAPABLE
DESCRIPTION
The RM4830 Modular Switched-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
small to medium cellular and PCS sites.
• AUTOMATIC LOAD SHARING
• COMPACT SIZE
• SHELF MOUNTED
• BELLCORE BASED DESIGN
• REMOTE RESTART FUNCTION!
• FRONT PANEL CURRENT METER
• BATTERY OR BATTERYLESS OPERATION
• INTELLIGENT HIGH VOLTAGE SHUTDOWN
• GUARANTEED NO SINGLE PART FAILURE WILL
RESULT IN OUTPUT HIGH VOLTAGE
• THD <5%
AGENCY APPROVALS
RM4830 6/98 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 (when supplying 30ADC at 48VDC) 105 VAC 20 AAC
208 VAC 10 AAC
240 VAC 8.5 AAC
Efficiency > 85 %
Power Factor Correction (PFC) input range between 105V
MEASUREMENTS OF RM4830
Module
Weight 14 lbs.
Height 5 U (8.75”)
Depth 15.55”
Width 3.35”
Shelf* Weight 21 lbs.
Height 5 U (8.75”)
Depth 15.55”
Width 23” rack mount
* These measurements are specifically for the 180A Power Shelf for up to 6 quantity RM 4830.
Please contact factory for other shelf and power plant options.
AC-264VAC >.99
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
A series of RM4830 rectifiers will automatically share equal
amounts of the load current when operating in parallel
within ±5% of the average current for the load applied.
N+1 Operation
The rectifier can operate in true N + 1 redundacy mode.
Remote Equalize
The rectifier output may be changed from float to equalize
via remote signal.
Current Limit
When rectifier current reaches 30ADC - 32ADC, the unit
will automatically limit the current down to short circuit conditions with no fold back.
LED Indicators
The front panel includes a 10 segment yellow LED output
current bar graph, a green normal operation LED, and a
red rectifier failed LED.
Safety
UL/CUL Recognized: UL 1950/CSA 950.
File No.: E131694
EMI filtering to FCC and VDE-0875 limits.
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RM4830 6/98 REV A
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Output Specifications
Parameter Conditions Min Typ Max Units
Voltage Adjustment Range
float voltage 40 60 VDC
equalize voltage 40 60 VDC
Regulation 0-100% load within
specified input voltage and frequency range ±0.5 %
Load Current within a 10 - 100% rating ± 10 %
Filtering
Voice band <32 dBrnC
Wide band noise 20 MHz bandwidth <250 mV p-p
<40 mVrms
ENVIRONMENTAL
Temperature
Operating 0 +50 °C
+32 122 °F
Storage -50 85 °C
-58 185 °F
Temperature Coefficient after half hour warm-up 0.01 V/°C
Humidity non-condensing 0 95 %
Altitude 0 7000 ft.
0 2133 m
Heat Dissipation @54V 980 Btu/hr
Audible Noise 2 ft. from any vertical surface <65 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. Conditions which may lead to an RFA are:
Low Current - Output current has decreased to below
2% of its rated value.
Unit Shutdown - Any shutdown occurrence due to
overvoltage, external shutdown command, unacceptable
ambient temperature conditions or low AC input voltage.
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 50°C.
High Voltage Shutdown (HVSD)
The unit’s built-in high voltage limit is permanently set at
60.5VDC. 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 106 VAC (with tolerance),
the rectifier’s operation is automatically inhibited.
Output Circuit Protection Device (Fuse)
The unit has one internal output protection fuse which is
in series with the -48VDC output.
RM4830 6/98 REV A
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Mechanical
FAN
4.95
+ .25
4.70
+ .25
SIDE
14.30
1.25
FRONT
3.35
4.35
+ .25
2.35
+ .25
1st TEST
BURN-IN HI-POT
2nd TEST QA
Standard Options are shown, consult factory for other available options.
8.63
4830
VOLTAGE
30
FLT EQL
27
24
21
18
15
12
9
6
3
PWR/RESET
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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RM4830 6/98 REV A
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