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DC Power
Mini rectifier
-48 V DC, 800 W
Features and benefits
Low rectifier/subrack height
– minimize space needed for power in embedded applications
DSP (Digital Signaling
Processor) – means fewer components, optimized operation and active load sharing for increased reliability
Compliant with global standards – delivers quality, performance and reliability no matter what the application or location demands
High efficiency, > 91%
– reduces power consumption for lower operating costs
Hot pluggable – facilitates future extensions
Wide input voltage range
– operates in the most demanding environments where input voltage changes
Wide temperature operating range (-40°C / -40 °F to
+75°C / 167°F) – meets the harshest climatic environment requirements
The R48-800 rectifier converts standard AC supply voltages into stable nominal -48 V DC voltage adjustable to the needs of the application. The R48-800 is a constant power rectifier designed with the latest patented switch-mode technology using DSP
(Digital Signaling Processor) functionality for efficient operation.
For a higher load capacity, rectifiers can be connected in parallel and intelligent control can be added with the help of a separate controller.

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AC input
Input voltage, nominal
Input voltage, permitted variation
Line frequency
Max input current
Power factor
DC output
Output voltage, adjustment range
Output power
Output power, derated for input voltage See diagram
Output current
Efficiency
Psophometric noise (system)
Temperature derating
-42 to –58 V DC
800 W @ Vout >45 V DC
18 A @ -45 V DC
>91%
<1mV at 5 to 100% of rated load <32 dBrnc at 5 to 100% of rated load
See diagram
200 to 240 V AC
85 to 300 V AC
45 to 65 Hz
6 A
0.99
Control and monitoring
Rectifier alarm and signalling
Visual indications
Environmental
Temperature range, operating
Temperature range, storage
Relative humidity
Altitude
EMC
Safety
Alarm and status reported via CAN bus to system Controller
Green LED = Normal operation; Yellow LED = Alarm;
Red LED = Failure; Flashing red LED = Fan failure
-40 to +75°C, -40 to +167°F
-40 to +75°C, -40 to +167°F
0 to 90%
2000 m, 6560 ft at full power
EN 300 386:2001 class B, FCC part 15 class B
IEC 60950, EN 60950, UL 60950
Mechanics
Dimensions (HxWxD)
Weight
Other parts
Controller units
81 x 40 x 285 mm (3.181 x 1.575 x 11.22 inches)
1.1 kg (2.43 lbs)
See separate ACU,SCU and LAU datasheets
Ordering information
Product name
Rectifier R48-800
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Emerson Network Power
Energy Systems AB
SE-141 82 Stockholm, Sweden
Phone: +46 8 721 60 00
Fax: +46 8 721 71 77
Emerson Network Power
Energy Systems, North America
1122 ”F” Street, Lorain, OH 44052
Phone: 440-246-6999
Fax: 440-246-4876 www.emersonnetworkpower.com/ energysystems/
Emerson Network Power
Co Ltd., China
No. 1 Kefa Rd., Science &
Industry Park
Nanshan District 518057,
Shenzhen, China
Phone: 86-755-860 108 08
www.emersonnetworkpower.com.cn
For global contact, visit: www.emersonenergy.com
EN/LZT 145 246 RA
© Emerson Network Power Energy Systems 2005
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