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Product Data Sheet
50 AMP MODULAR SWITCHED MODE RECTIFIER
RM4850
FEATURES
* * * * * * * SWITCHED MODE >.99 PFC >90% EFFICIENCY AUTOMATIC LOAD SHARING HOT-SWAP CAPABLE COMPACT SIZE SHELF MOUNTED
* SOFT START TURN-ON * ESD TO 20,000 VOLTS * -40C TO 65C FULL OPERATION WITHOUT DERATING * * * * REMOTE EMERGENCY POWER DISCONNECT ! TELECOM BULK POWER RATED! BELLCORE COMPLIANT INFINITE, FULL CURRENT SHORT CIRCUIT CAPABLE! BUILT-IN AC & DC DISCONNECTS FRONT PANEL METER BATTERY OR BATTERYLESS OPERATION INTELLIGENT HIGH VOLTAGE SHUTDOWN GUARANTEED NO SINGLE COMPONENT FAILURE CAN LEAD TO OUTPUT HIGH VOLTAGE! GUARANTEED SAFE OPERATION TO 300 VAC ENVIRONMENTALLY HARDENED! THD <5%
DESCRIPTION
The RM4850 Modular Switch-Mode Rectifier is one of C&D Technologies' family of rectifiers that may be used in modular power plants. This high power unit will function in parallel with any rectifier with similar current sharing capacities. This versatile and efficient rectifier 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.
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AGENCY APPROVALS
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 Page 1
RM4850 4/98 REV A
Input Specifications
Parameter
Operating Range Current Efficiency Power Factor Correction (PFC)
Conditions
45 - 65 Hz, single phase, no taps required Adjustable
Min
176 0
Typ
Max
264 50 >90 >.99
Units
VAC A %
MEASUREMENTS OF RM4850
Module Weight Height Depth Width Shelf* Weight Height Depth Width 25 lbs. 7U (12.25") 15.25" 5" 18 lbs. 7U (12.25") 15.25" maximum 23" rack mount
* These measurements are specifically for the 200A Power Shelf for up to 4 quantity RM4850 Please contact the 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 or passive load sharing is available between modules of the same operating voltages in parallel applications. Current Limit The Current Limit is adjustable between 0A to 50A. Upon exceeding this limit, the rectifier automatically reduces output voltage. Safety UL/CUL Recognized: UL 1950/CSA 950. File Number: E181908
Alarm Outputs Rectifier Fail Alarm Equalize Occurring High Voltage Occurring Temporary Restraint Occurring Thermal Shutdown Occurring Open Sense Lead Has Occurred Low Current Alarm AC Power Has Failed Alarm Rectifier Fan Has Failed Alarm DC Breaker Is Open Alarm AC Breaker Is Open Alarm (RFA) (EQO) (HVO) (TRO) (THSD) (OS) (LCA) (ACF) (FF) (DCBKR) (ACBKR)
Control Inputs High Voltage Shutdown Restart Equalize Temporary Release Emergency Shutdown (HVSD) (RS) (EQ) (TR)
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All control inputs are initiated with a ground closure
(EMSD)
24VAC voltage reference to ground
Note: All alarms are "Form A" relay type contacts
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RM4850 4/98 REV A
Output Specifications
Parameter
Voltage Adjustment Range float voltage equalize voltage 0-100% load within specified input voltage and frequency range within a 10 - 100% rating nominal AC line 48 48 0.5 10 >16 <32 <250 60 60 VDC VDC % % mS dBrnc mV p-p
Conditions
Min
Typ
Max
Units
Regulation Load Current Hold-Up Time Filtering Voice band Wide band noise ENVIRONMENTAL Temperature Operating Storage Humidity Altitude Heat Dissipation Audible Noise
@20 MHz
non-condensing
-40 -40 -50 -58 0 0 0 1025 <55
+65 149 +85 185 95 7000 2133
@54V 5 ft. from any vertical surface
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). Conditions which may lead to an RFA include: 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 out of bounds 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 65C. High Voltage Shutdown (HVSD) The unit's high voltage limit is adjustable up to 60VDC. Shutdown occurs while voltage is high and the rectifier is delivering greater than 10% rated current. 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 176 VAC, the rectifier's operation is automatically inhibited.
RM4850 4/98 REV A
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Mechanical
All measurements are in inches
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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RM4850 4/98 REV A

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