Vertiv NetSure R48-2000 User manual

NetSure™
Rectifier Module
User Manual (UM1R482000e / 11BU1360YY), Revision J
Specification Number: 1R482000, 1R482000e, 1R482000H
Model Number: R48-2000, R48-2000e, R48-2000H

Vertiv |NetSure Rectifier Module User Manual (UM1R482000e / 11BU1360YY)|Rev. J
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The information contained in this document is subject to change without
notice and may not be suitable for all applications. While every precaution
has been taken to ensure the accuracy and completeness of this
document, Vertiv Group Corporation assumes no responsibility and
disclaims all liability for damages resulting from use of this information or
for any errors or omissions. Refer to other local practices or building codes
as applicable for the correct methods, tools, and materials to be used in
performing procedures not specifically described in this document.
This document may contain confidential and/or proprietary information of
Vertiv Group Corporation, and its receipt or possession does not convey
any right to reproduce, disclose its contents, or to manufacture or sell
anything that it may describe. Reproduction, disclosure, or use without
specific authorization from Vertiv Group Corporation is strictly prohibited.
Vertiv and the Vertiv logo are trademarks or registered trademarks of
Vertiv Group Corporation. NetPerform™, NetReach™, NetSure™ and
NetXtend™ are trademarks of Vertiv Energy Systems, Inc. All other
trademarks are the property of their respective owners.
© 2017 Vertiv Energy Systems, Inc. All rights reserved.

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TABLE OF CONTENTS
Admonishments Used in this Document............................................................4
Important Safety Instructions ..............................................................................5
General Safety ...........................................................................................................................................................5
Voltages...........................................................................................................................................................................5
AC Input Voltages........................................................................................................................................................ 5
DC Output and Battery Voltages ..................................................................................................................5
Hazardous Voltage...............................................................................................................................................5
Handling Equipment Containing Static Sensitive Components..............................5
Static Warning...........................................................................................................6
Introduction ...............................................................................................................7
Overview..........................................................................................................................................................................7
Specifications .............................................................................................................................................................7
DC Output Ratings ...................................................................................................................................................... 7
AC Input Ratings ..........................................................................................................................................................11
Environmental Ratings: ........................................................................................................................................ 19
Compliance Information..................................................................................................................................... 20
Standard Features ................................................................................................................................................... 20
Mechanical Specifications.................................................................................................................................23
Operation................................................................................................................. 24
AC Input Protection Device Requirements/Recommendations..........................24
Local Indicators....................................................................................................................................................24
Rectifier High Voltage Shutdown and Lockout Restart ..............................................24
Installing Rectifiers............................................................................................................................................ 25
Troubleshooting and Repair............................................................................... 26
Troubleshooting ..................................................................................................................................................26
Rectifier Current Sharing Imbalance.......................................................................................................26
Rectifier Fault Symptoms and Troubleshooting..........................................................................26
Replacement Procedures........................................................................................................................... 28
Rectifier Replacement...........................................................................................................................................28
Rectifier Fan Replacement...............................................................................................................................29

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ADMONISHMENTS USED IN THIS DOCUMENT
DANGER
! Warns of a hazard the reader will be exposed to that will likely result
in death or serious injury if not avoided. (ANSI, OSHA)
WARNING
! Warns of a potential hazard the reader may be exposed to that could
result in
death or serious injury if not avoide
d. This admonition is not used for situations that pose a
risk only to equipment, software, data, or service. (ANSI)
CAUTION
! Warns of a potential hazard the reader may be exposed to that could
result in minor or moderate injury if not avoided. (ANSI, OSHA) This admonition is not
used for situations that pose a risk only to equipment, data, or service, even if such use
appears to be permitted in some of the applicable standards. (OSHA)
ALERT
! Alerts the reader to an action that must be avoided in order to protect
equipment, software, data, or service. (ISO)
ALERT
! Alerts the reader to an action that must be performed in order to prevent
equipment damage, software corruption, data loss, o
r service interruption. (ISO)
FIRE SAFETY
! Informs the reader of fire safety information, reminders, precautions,
or policies, or of the locations of fire
-fighting and fire-safety equipment. (ISO)
SAFETY
! Informs the reader of general safety information, reminders, precautions, or
policies not related to a particular source of hazard or to fire safety. (ISO, ANSI, OSHA)

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IMPORTANT SAFETY INSTRUCTIONS
General Safety
DANGER! YOU MUST FOLLOW APPROVED SAFETY PROCEDURES.
Performing the following procedures may expose you to hazards. These procedures should be
performed by qualified technicians familiar with the hazards associated with this type of equipment.
These hazards may include shock, energy, and/or burns. To avoid these hazards:
a) The tasks should be performed in the order indicated.
b) Remove watches, rings, and other metal objects.
c) Prior to contacting any uninsulated surface or termination, use a voltmeter to verify that no voltage
or the expected voltage is present. Check for voltage with both AC and DC voltmeters prior to
making contact.
d) Wear eye protection.
e) Use certified and well maintained insulated tools. Use double insulated tools appropriately rated for
the work to be performed.
Voltages
AC Input Voltages
DANGER! This system operates from AC input voltage capable of producing fatal electrical shock.
DC Output and Battery Voltages
DANGER! This system produces DC power and may have a battery source connected to it. Although
the DC voltage is not hazardously high, the rectifiers and/or battery can deliver large amounts of current.
Exercise extreme caution not to inadvertently contact or have any tool inadvertently contact an output
terminal or battery terminal or exposed wire connected to an output terminal or battery terminal.
NEVER allow a metal object, such as a tool, to contact more than one termination or battery terminal at a
time, or to simultaneously contact a termination or battery terminal and a grounded object. Even a
momentary short circuit can cause sparking, explosion, and injury.
Hazardous Voltage
DANGER! HAZARD OF ELECTRICAL SHOCK.
More than one disconnect may be required to de-energize the system before servicing.
Handling Equipment Containing Static Sensitive Components
ALERT! Installation or removal of equipment containing static sensitive components requires careful
handling. Before handling any equipment containing static sensitive components, read and follow the
instructions contained on the Static Warning Page.

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STATIC WARNING
This equipment contains static sensitive components. The warnings listed below must be observed to
prevent damage to these components. Disregarding any of these warnings may result in personal injury
or damage to the equipment.
1. Strictly adhere to the procedures provided in this document.
2. Before touching any equipment containing static sensitive components, discharge all static
electricity from yourself by wearing a wrist strap grounded through a one megohm resistor. Some
wrist straps have a built-in one megohm resistor; no external resistor is necessary. Read and follow
wrist strap manufacturer’s instructions outlining use of a specific wrist strap.
3. Do not touch traces or components on equipment containing static sensitive components. Handle
equipment containing static sensitive components only by the edges that do not have connector
pads.
4. After removing equipment containing static sensitive components, place the equipment only on
conductive or anti-static material such as conductive foam, conductive plastic, or aluminum foil. Do
not use ordinary Styrofoam™or ordinary plastic.
5. Store and ship equipment containing static sensitive components only in static shielding containers.
6. If necessary to repair equipment containing static sensitive components, wear an appropriately
grounded wrist strap, work on a conductive surface, use a grounded soldering iron, and use
grounded test equipment.

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INTRODUCTION
Overview
The rectifiers provide load power, battery float current, and battery recharge current during normal operating
conditions. The rectifiers are a constant power design. The rectifiers are rated at their maximum output power.
This means that, within the normal operating ambient temperature range and input voltage range, the
maximum available output power is a constant 2000W. Within these ranges, the rectifiers operate in one of
three modes, depending upon load demands. Transition between modes is completely automatic. If ambient
temperature rises above or input voltage falls below acceptable values, rectifiers continue to operate but at
derated output power levels.
•Constant Voltage Mode: For any initial output voltage setting from 42 to 58 volts, output voltage
remains constant regardless of load. This is the normal operating condition, in which loads are being
supplied and batteries are float charged. Rectifiers operate in the Constant Voltage Mode unless load
increases to the point where the product of load current and output voltage is approximately 2000W.
•Constant Power Mode: As load increases above approximately 2000W (non-adjustable), output current
continues to increase, but output voltage decreases as required to maintain constant output power.
Rectifiers operate in the Constant Power Mode unless load continues to increase to the point where the
current limit setting is reached.
•Constant Current Mode: If load increases to the current limit setting, output voltage decreases linearly
to maintain output current at the current limit setting.
Specifications
NOTE! A current limitation can be set by the User and the output voltage level is set through the
controller.
DC Output Ratings
•Voltage: Nominal -48.0 VDC, Positive Ground.
a) Adjustment Range: The output voltage can be set within the range of -42V to -58V, adjustable via
the controller.
•Output Power and Current:
2000W (41.7A) @ 208/240VAC Input and -48VDC Output.
1262W (26.3A) @ 120VAC Input and -48VDC Output.
•Output Characteristics:
a) Refer to Figure 1for a graph of output voltage vs. output current for the R48-2000e rectifier.
b) Refer to Figure 2for a graph of output voltage vs. output current for the R48-2000 and R48-2000H
rectifier.

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Figure 1: Output Voltage vs. Output Current [R48-2000e (1R482000e)]
Figure 2: Output Voltage vs. Output Current [R48-2000 (1R482000) and R48-2000H (1R482000H)]
•Power Derating Based on Input Voltage: The rectifier power varies with changes in input voltage and
output voltage. It uses an advanced power limitation method. The lower input threshold is 85 VAC. The
rectifier can provide its maximum rated power (2000W) as long as the input voltage is within the range
of 176 to 300 VAC. Below 176 VAC, and down to 85 VAC, the rectifier will continue to operate normally
but will be in a power derating mode. The relationship between the output power and input voltage is
illustrated in Figure 3and Figure 4.

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Figure 3: Power Derating Based on Voltage [R48-2000 (1R482000) and R48-2000H (1R482000H)]
Figure 4: Power Derating Based on Voltage [R48-2000e (1R482000e)]
•Power Derating Based on Temperature: The rectifier delivers full power when operating at an ambient
temperature of +45°C (+113°F) or below (1R482000 and 1R2000H) or +55°C (+131°F) or below
(1R482000e). Each rectifier continuously monitors the ambient temperature surrounding the power
conversion circuit. If this temperature for any reason (such as a high ambient temperature or failed fan)
increases above approximately +45°C (+113°F) (R48-2000 and R48-2000H) or +55°C (+131°F) (R48-
2000e), the rectifier will not shut down. Rather, the rectifier limits its maximum output power to
maintain the temperature of the power conversion circuit within design parameters. Operation between
+45°C (+113°F) (R48-2000 and R48-2000H) or +55°C (+131°F) (R48-2000e) and +80°C (+176°F) will
result in output power being decreased. Full power capability is restored when the temperature
decreases to below approximately +45°C (+113°F) (R48-2000 and R48-2000H) or +55°C (+131°F) (R48-
2000e). Refer to Figure 5and Figure 6to view the relationship between the output power and the
ambient temperature.
Other power rating values are as follows:
a) 1R482000 and 1R2000H:
1. At an ambient temperature of +65°C (+149°F), the power delivered by the rectifier is 1600W.
2. At an ambient temperature of +75°C (+158°F), the power delivered by the rectifier is 800W.

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b) 1R482000e:
1. At an ambient temperature of +65°C (+149°F), the power delivered by the rectifier is 1750W.
2. At an ambient temperature of +75°C (+158°F), the power delivered by the rectifier is 1500W.
WARNING! The rectifier is rated for continuous operation at full output power up to +45°C (+113°F)
(R48-2000 and R48-2000H) or +55°C (+131°F) (R48-2000e). Operation between +45°C (+113°F) (R48-
2000 and R48-2000H) or +55°C (+131°F) (R48-2000e) and +80°C (+176°F) will result in output power
decrease. Operation above +80°C (+176°F) is considered abnormal and should be used on a temporary1
basis only.
1Temporary Operation at Abnormal Temperature: Temporary operation is defined as a period of
not more than eight consecutive hours per day, and a total of not more than 15 days in a year.
(This refers to a total of 120 hours in any given year, but no more than 15 occurrences in that one-
year period.)
Figure 5: Power Derating Based on Temperature [R48-2000 (1R482000) and R48-2000H (1R482000H)]
Figure 6: Power Derating Based on Temperature [R48-2000e (1R482000e)]

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•Regulation:
a) Static: Steady state regulation is ±0.5% as controlled within the rectifier for any and all combinations
of load from no load to full load, input voltage, and input frequency at a constant ambient
temperature. The associated system controller may provide increased regulation.
b) Dynamic: For any step load change within the range of 10% to 90% of full load within 50
microseconds, per Telcordia GR-947-CORE, the maximum voltage transient will not exceed 5% of
the initial steady state voltage within 50±10 microseconds. Recovery to within 1% of the initial
steady state voltage does not exceed 4 milliseconds.
•Filtering:
a) Voice Band Noise: Complies with Telcordia GR-947-CORE.
1. R48-2000 (1R482000) and R48-2000H (1R482000H): Output noise according to Telcordia
GR-947-CORE is <32 dBrnC at normal input and full load.
2. R48-2000e (1R482000e): Output noise according to Telcordia GR-947-CORE is <38 dBrnC
typical at normal input and 20% to 70% of rated load.
3. R48-2000 (1R482000) and R48-2000H (1R482000H): Psophometric noise is ≤1 mV at 5% to
100% of rated load.
4. R48-2000e (1R482000e): Psophometric noise is ≤2 mV typical at 20% to 70% of rated load.
b) Wide Band Noise: Complies with Telcordia GR-947-CORE.
1. Wideband noise emission is <250 mV peak to peak between 0 Hz – 100 MHz, and <100 mV rms
in any 3 kHz band 10 – 20 MHz.
AC Input Ratings
•Voltage: Nominal 120/208/240 volts AC, single phase, 3-wire, 50/60 Hz, with an operating range of 100
to 250 volts. Acceptable input frequency range is 45 to 65 Hz.
Permitted Variation: 85 to 300 VAC.
•Harmonic Content (THD):≤5% from 50% to 100% of rated load. Meets EN61000-3-2.
•Inrush Current: Peak does not exceed 1.5 times of the peak value of the maximum steady-state input
current at full load, nominal input voltage, and for any duration of AC input interrupts. Under the above
conditions, standard AC distribution circuit breakers will not trip.
•Typical Input Data (1R482000e):
a) Refer to Table 1and Table 3.
b) Maximum Input Current: Refer to Table 2and Table 4.
c) Efficiency Curve: (Refer to Figure 7.)
•Typical Input Data (1R482000):
a) Refer to Table 5and Table 7.
b) Maximum Input Current: Refer to Table 6and Table 8.

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c) Efficiency Curve: (Refer to Figure 8.)
•Typical Input Data (1R482000H):
a) Refer to Table 9and Table 11.
b) Maximum Input Current: Refer to Table 10 and Table 12.
c) Efficiency Curve: (Refer to Figure 9.)
Table 1: Typical Input Data (1R482000e): 60 Hz input
Nominal
Input
Voltage
Percent
of Full
Load
Input
Current
(Amperes)
Input
VA
Input
Watts
Power
Factor %
Efficiency
%
Heat
Dissipation
BTU/Hr
208
0
0.36
73.5
30.5
41.50
--
104.07
25 2.45 508.9 496.0 97.47 95.14 82.25
50
4.77
992.1
984.5
99.23
95.99
134.85
75 7.11 1478.2 1473.0 99.65 95.63 219.77
100
9.55
1984.5
1980.5
99.80
94.90
344.98
110
10.32
2149.8
2139.5
99.52
94.58
395.71
120 10.36 2151.8 2147.5 99.80 94.22 423.81
240
0
0.38
106.6
32.5
30.50
--
110.89
25 2.13 509.3 494.5 97.10 95.37 78.10
50
4.15
996.0
982.0
98.59
96.21
127.10
75
6.15
1477.6
1468.0
99.35
95.94
203.59
100 8.24 1977.5 1970.0 99.62 95.38 310.33
110
8.90
2134.8
2127.5
99.66
95.08
357.51
120 8.94 2142.9 2135.0 99.63 94.69 386.49
NOTE! System output is initially adjusted to 54.48 volts DC as measured at the system sense point at
50% of full load and nominal input. “Percent of Full Load” refers to percent of 34.5 amperes.
Table 2: Maximum Input Current (1R482000e): 60 Hz input
Nominal
Input Voltage
Input Voltage
Input Current
(Amperes)
208/240 176 11.73
NOTE! At 100% of full load with output adjusted to 58 volts DC as measured at the shelf output
terminals.

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Table 3: Typical Input Data (1R482000e): 50 Hz input
Nominal
Input
Voltage
Percent
of Full
Load
Input
Current
(Amperes)
Input
VA
Input
Watts
Power
Factor %
Efficiency
%
Heat
Dissipation
BTU/Hr
208
0
0.32
71.1
33.0
46.40
--
112.60
25 2.43 505.3 496.0 98.15 95.15 82.07
50
4.76
990.4
985.0
99.45
95.94
136.37
75 7.11 1477.2 1473.5 99.75 95.58 222.17
100
9.55
1983.5
1980.5
99.85
94.89
345.17
110
10.32
2142.8
2140.0
99.87
94.55
398.12
120 10.36 2150.7 2147.5 99.85 94.21 424.15
240
0
0.33
74.3
26.0
35.00
--
88.72
25 2.11 505.1 494.5 97.90 95.42 77.24
50
4.13
991.9
982.0
99.00
96.21
126.91
75
6.15
1474.3
1467.5
99.54
95.97
201.88
100 8.24 1975.3 1970.0 99.73 95.38 310.33
110
8.89
2132.8
2127.5
99.75
95.06
358.79
120 8.93 2141.3 2135.5 99.73 94.68 387.69
NOTE! System output is initially adjusted to 54.48 volts DC as measured at the system sense point at
50% of full load and nominal input. “Percent of Full Load” refers to percent of 34.5 amperes.
Table 4: Maximum Input Current (1R482000e): 50 Hz input
Nominal
Input Voltage
Input Voltage
Input Current
(Amperes)
208/240 176 11.73
NOTE! At 100% of full load with output adjusted to 58 volts DC as measured at the shelf output
terminals.

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Table 5: Typical Input Data (1R482000): 60 Hz input
Nominal
Input
Voltage
Percent
of Full
Load
Input
Current
(Amperes)
Input
VA
Input
Watts
Power
Factor %
Efficiency
%
Heat
Dissipation
BTU/Hr
208
0
0.30
62.3
27.9
44.80
--
95.20
25 2.56 530.8 526.0 99.10 89.58 187.02
50
4.96
1030.5
1030.0
99.95
91.61
294.95
75 7.40 1535.2 1535.0 99.99 91.61 439.34
100
9.96
2064.8
2064.0
99.96
90.90
640.80
110
10.80
2229.3
2228.0
99.94
90.43
727.33
120 10.80 2231.3 2230.0 99.94 89.93 766.53
240
0
0.33
77.8
27.7
35.60
--
94.52
25 2.23 534.1 525.0 98.30 89.70 184.52
50
4.29
1028.8
1026.0
99.73
91.90
283.66
75
6.38
1529.5
1529.0
99.97
91.90
422.83
100 8.58 2055.2 2055.0 99.99 91.23 614.94
110
9.20
2208.2
2208.0
99.99
90.83
690.89
120 9.26 2217.2 2217.0 99.99 90.25 737.58
NOTE! System output is initially adjusted to 54.48 volts DC as measured at the system sense point at
50% of full load and nominal input. “Percent of Full Load” refers to percent of 34.5 amperes.
Table 6: Maximum Input Current (1R482000): 60 Hz input
Nominal
Input Voltage
Input Voltage
Input Current
(Amperes)
208/240 176 12.33
NOTE! At 100% of full load with output adjusted to 58 volts DC as measured at the shelf output
terminals.

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Table 7: Typical Input Data (1R482000): 50 Hz input
Nominal
Input
Voltage
Percent
of Full
Load
Input
Current
(Amperes)
Input
VA
Input
Watts
Power
Factor %
Efficiency
%
Heat
Dissipation
BTU/Hr
208
0
0.26
53.8
28
52.00
--
95.54
25 2.55 529.2 526 99.40 89.55 187.56
50
4.95
1029.3
1029
99.97
91.65
293.16
75 7.40 1535.2 1535 99.99 91.54 442.94
100
10.00
2065.8
2065
99.96
90.80
648.59
110
10.72
2220.7
2220
99.97
90.36
730.03
120 10.76 2232.9 2232 99.96 89.75 780.85
240
0
0.29
65.9
27
41.00
--
92.13
25 2.22 531.1 525 98.86 89.86 181.62
50
4.29
1028.7
1027
99.83
91.88
284.42
75
6.37
1531.3
1531
99.98
91.85
425.70
100 8.57 2057.2 2057 99.99 91.20 617.94
110
9.24
2215.2
2215
99.99
90.90
688.09
120 9.28 2220.2 2220 99.99 90.32 733.07
NOTE! System output is initially adjusted to 54.48 volts DC as measured at the system sense point at
50% of full load and nominal input. “Percent of Full Load” refers to percent of 34.5 amperes.
Table 8: Maximum Input Current (1R482000): 50 Hz input
Nominal
Input Voltage
Input Voltage
Input Current
(Amperes)
208/240 176 12.33
NOTE! At 100% of full load with output adjusted to 58 volts DC as measured at the shelf output
terminals.

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Table 9: Typical Input Data (1R482000H): 60 Hz input
Nominal
Input
Voltage
Percent
of Full
Load
Input
Current
(Amperes)
Input
VA
Input
Watts
Power
Factor %
Efficiency
%
Heat
Dissipation
BTU/Hr
208
0
0.33
68.9
36.7
53.30
--
125.23
25 2.52 523.8 518.0 98.90 91.05 158.17
50
4.90
1018.7
1018.0
99.93
92.81
249.77
75 7.31 1519.2 1519.0 99.99 92.70 378.59
100
9.80
2040.6
2040.0
99.97
92.08
551.30
110
10.62
2203.9
2203.0
99.96
91.77
618.43
120 10.62 2205.9 2205.0 99.96 91.42 645.48
240
0
0.362
86.5
36.5
42.20
--
124.54
25 2.20 526.5 516.0 98.00 91.47 150.24
50
4.26
1018.4
1015.0
99.67
93.11
238.56
75
6.31
1513.6
1513.0
99.96
93.09
356.94
100 8.46 2029.2 2029.0 99.99 92.60 512.45
110
9.15
2192.2
2192.0
99.99
92.38
569.78
120 9.14 2190.2 2190.0 99.99 92.17 585.21
NOTE! System output is initially adjusted to 54.48 volts DC as measured at the system sense point at
50% of full load and nominal input. “Percent of Full Load” refers to percent of 34.5 amperes.
Table 10: Maximum Input Current (1R482000H): 60 Hz input
Nominal
Input Voltage
Input Voltage
Input Current
(Amperes)
208/240 176 12.2
NOTE! At 100% of full load with output adjusted to 58 volts DC as measured at the shelf output
terminals.

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Table 11: Typical Input Data (1R482000H): 50 Hz input
Nominal
Input
Voltage
Percent
of Full
Load
Input
Current
(Amperes)
Input
VA
Input
Watts
Power
Factor %
Efficiency
%
Heat
Dissipation
BTU/Hr
208
0
0.28
58.9
36.1
61.30
--
123.18
25 2.52 522.7 519.0 99.30 90.92 160.75
50
4.90
1018.4
1018.0
99.96
92.80
250.19
75 7.30 1520.2 1520.0 99.99 92.60 383.63
100
9.83
2040.4
2040.0
99.98
92.04
553.78
110
10.62
2203.7
2203.0
99.97
91.77
618.45
120 10.62 2203.7 2203.0 99.97 91.45 642.57
240
0
0.32
75.0
36.0
48.00
--
122.84
25 2.18 523.3 516.5 98.70 91.36 152.32
50
4.23
1016.2
1014.0
99.78
93.16
236.62
75
6.30
1513.3
1513.0
99.98
93.03
359.86
100 8.46 2026.2 2026.0 99.99 92.69 505.67
110
9.12
2184.2
2184.0
99.99
92.44
563.08
120 9.12 2185.2 2185.0 99.99 92.22 579.72
NOTE! System output is initially adjusted to 54.48 volts DC as measured at the system sense point at
50% of full load and nominal input. “Percent of Full Load” refers to percent of 34.5 amperes.
Table 12: Maximum Input Current (1R482000H): 50 Hz input
Nominal
Input Voltage
Input Voltage
Input Current
(Amperes)
208/240 176 12.2
NOTE! At 100% of full load with output adjusted to 58 volts DC as measured at the shelf output
terminals.

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Figure 7: Efficiency Curve [R48-2000e (1R482000e)]
Figure 8: Efficiency Curve [R48-2000 (1R482000)]

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Figure 9: Efficiency Curve [R48-2000H (1R482000H)]
Environmental Ratings:
•Operating Ambient Temperature Range:
a) -40°C (-40°F) to +80°C (+176°F) with derating output.
b) 1R482000 and 1R2000H: -40°C (-40°F) to +45°C (+113°F) with full power performance.
c) 1R482000e: -40°C (-40°F) to +55°C (+131°F) with full power performance.
d) Temperature Coefficient: 0.01% per degrees Celsius.
•Storage Ambient Temperature Range: -40°C (-40°F) to +80°C (+176°F).
•Relative Humidity: This rectifier is capable of operating in an ambient relative humidity range of 0% to
95%, non-condensing.
•Altitude: 2000 m (6560 ft) at full power (power limited for heights above 2000 m).
•Surge Protection: Compliance with EN61000-4-5 (2kV Line to Line, 2kV Line to Earth). Capable of
withstanding surges per ANSI/IEEE C 62.41 1980 Category B3 across the input terminals.
NOTE! This level of protection is a widely used standard for telecommunications power equipment. As
with all such equipment, it is the end user's responsibility to provide an adequately sized Surge
Suppression Device at the commercial power service entrance of the building that reduces all incoming
surges to levels below the classes/categories stated for the equipment.
•Ventilation Requirements: The rectifiers are fan cooled and utilize front to back forced ventilation. A
rectifier must be mounted so ventilating openings are not blocked and temperature of the air entering
the rectifier does not exceed the Operating Ambient Temperature Range stated above.
•Single Rectifier Audible Noise:
a) R48-2000e: At 25°C ≤ 50dB(A) with fan in high speed. Measurement made at 0.6m distance in
front of rectifier and at same horizontal line of the middle of rectifier.

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b) R48-2000 and R48-2000H: At 25°C ≤ 53dB(A) with fan in high speed. Measurement made at 0.6m
distance in front of rectifier and at same horizontal line of the middle of rectifier.
•EMI/RFI Suppression:
a) Rectifiers operating in an approved rectifier Mounting Shelf conform to the requirements of FCC
rules Part 15, Subpart B, Class B for Radiated and Conducted emissions limits.
b) Rectifiers operating in an approved rectifier Mounting Shelf conform to the requirements of
European Norm, EN55022, Class B for Radiated and Conducted emissions limits.
Compliance Information
•EMC: ETSI EN 300 386 class B, FCC CFR 47 Part 15 class B, Telcordia GR-1089-CORE class B.
•Safety: IEC 60950, EN 60950, UL 60950.
Standard Features
•Type of Power Conversion Circuit: High frequency.
•Constant Voltage Mode: For any initial output voltage setting from 42 to 58 volts, output voltage
remains constant regardless of load. This is the normal operating condition, in which loads are being
supplied and batteries are float charged. Rectifiers operate in the Constant Voltage Mode unless load
increases to the point where the product of load current and output voltage is approximately 2000W.
•Constant Power Mode: As load increases above approximately 2000W (non-adjustable), output current
continues to increase, but output voltage decreases as required to maintain constant output power.
Rectifiers operate in the Constant Power Mode unless load continues to increase to the point where the
current limit setting is reached.
•Constant Current Mode: If load increases to the current limit setting, output voltage decreases linearly
to maintain output current at the current limit setting.
•Input Protection:
a) Input Over/Under Voltage Protection: The rectifier will shut down at low or high voltage input; based
on the following voltage levels:
1. Low voltage disable point 80 V, ±5 V; hysteresis is 10 - 20 VAC for restart.
2. High voltage disable point 305 V, ±5 V; hysteresis is 10 - 15 VAC for restart.
b) Between 85 V and 176 V the output power will be derated linearly based on the input voltage as
follows:
1. At input voltage of 85 V with output >48 V, max output power is 800 W.
2. At input voltage of 120 V with output >48 V, max output power is 1262 W.
3. At input voltage of 154 V with output >48 V, max output power is 1700 W.
4. At input voltage of 176 V and output >48 V, max output power is 2000 W.