Vertiv Netsure User manual

NetSure™
DC/DC Converter Module
User Manual
Specification Number: 1C48582000P3
Model Number: C48/58-2000P3

Vertiv™ NetSure™ DC/DC Converter Module User Manual
Vertiv™ NetSure™ DC/DC Converter Module User Manual
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
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.
The products covered by this instruction manual are manufactured and/or
sold by Vertiv. This document is the property of Vertiv and contains
confidential and proprietary information owned by Vertiv. Any copying, use or
disclosure of it without the written permission of Vertiv is strictly prohibited.
Names of companies and products are trademarks or registered trademarks of
the respective companies. Any questions regarding usage of trademark
names should be directed to the original manufacturer.
Technical Support Site
If you encounter any installation or operational issues with your product, check the pertinent section of this
manual to see if the issue can be resolved by following outlined procedures.
Visit https://www.vertiv.com/en-us/support/ for additional assistance.

Vertiv™ NetSure™ DC/DC Converter Module User Manual
iii
TABLE OF CONTENTS
Admonishments Used in this Document.............................................................................................................................iv
Important Safety Instructions..................................................................................................................................................v
Static Warning ..............................................................................................................................................................................vi
1Introduction...............................................................................................................................................................................1
1.1 Overview.................................................................................................................................................................................................................................................................................1
1.2 Specifications.....................................................................................................................................................................................................................................................................1
1.2.1 DC Output Ratings.................................................................................................................................................................................................................................1
1.2.2 DC Input Ratings.....................................................................................................................................................................................................................................3
1.2.3 Environmental Ratings ......................................................................................................................................................................................................................5
1.2.4 Compliance Information ...................................................................................................................................................................................................................5
1.2.5 Standard Features .................................................................................................................................................................................................................................6
1.2.6 Mechanical Specifications..............................................................................................................................................................................................................7
2Operation ..................................................................................................................................................................................7
2.1 Local Indicators ..............................................................................................................................................................................................................................................................7
2.2 Converter High Voltage Shutdown and Lockout Restart.......................................................................................................................................................8
2.3 Converter Current Limit..........................................................................................................................................................................................................................................8
2.4 Installing Converter Modules.............................................................................................................................................................................................................................9
3Troubleshooting and Repair ............................................................................................................................................10
3.1 Troubleshooting..........................................................................................................................................................................................................................................................10
3.1.1 Converter Module Current Sharing Imbalanced ....................................................................................................................................................10
3.1.2 Converter Module Fault Symptoms and Troubleshooting...........................................................................................................................10
3.2 Replacement Procedures.................................................................................................................................................................................................................................... 11
3.2.1 Converter Module Replacement ............................................................................................................................................................................................ 11

Vertiv™ NetSure™ DC/DC Converter Module User Manual
iv
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 avoided. This admonition is not used for situations that pose a
risk o
nly 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, or 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)

Vertiv™ NetSure™ DC/DC Converter Module User Manual
v
Important Safety Instructions
Safety Admonishments Definitions
Definitions of the safety admonishments used in this document are listed under “Admonishments Used in this Document” on page iv.
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
DC Input Voltages
DANGER! This system operates from DC input voltage. Although the DC voltage is not hazardously high, the input power
can deliver large amounts of current.
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 converters 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.
Personal Protective Equipment (PPE)
DANGER! ARC FLASH AND SHOCK HAZARD.
Appropriate PPE and tools required when working on this equipment. An appropriate flash protection boundary analysis
should be done to determine the “hazard/risk” category, and to select proper PPE.
Only authorized and properly trained personnel should be allowed to install, inspect, operate, or maintain the equipment.
Do not work on LIVE parts. If required to work or operate live parts, obtain appropriate Energized Work Permits as required
by the local authority, per NFPA 70E “Standard for Electrical Safety in the Workplace”.

Vertiv™ NetSure™ DC/DC Converter Module User Manual
vi
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 under “Static Warning” on
page vi.
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 static dissipative
surfaces such as conductive foam or ESD bag. 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.

Vertiv™ NetSure™ DC/DC Converter Module User Manual
1
1Introduction
1.1 Overview
The C48/58-2000P3 is a compact DC/DC converter which offers efficient power conversion. It operates from a nominal -48 VDC
source to provide nominal -58 VDC load power.
1.2 Specifications
1.2.1 DC Output Ratings
•Voltage: Nominal -57 volts DC, positive ground. Output voltage is adjustable from -56.0 VDC to -58.0 VDC via the associated
controller.
•Power Rating: -56.0 VDC to -58.0 VDC, 1600W average, 2000W peak..
The C48/58-2000P3 can provide 2000 watts peak and 1600 watts average. This is based on a cyclic load profile of 2000
watts for 7msec and 600 watts for 3msec.
•Output Characteristics:
-Refer to Figure 1.1 for a graph of output voltage vs. output current at maximum average power 1600W.
-Refer to Figure 1.2 for a graph of output voltage vs. output current at maximum peak power 2000W.
-Refer to Figure 1.3 for a graph of output power vs. temperature.
Figure 1.1: Output Voltage vs. Output Current at Maximum Average Power 1600W
0
10
20
30
40
50
60
0 5 10 15 20 25 30
Output Voltage (V)
Output Current (A)
Output voltage v.s. Output current at max. average power

Vertiv™ NetSure™ DC/DC Converter Module User Manual
2
Figure 1.2: Output Voltage vs. Output Current at Maximum Peak Power 2000W
Figure 1.3: Output Power vs. Temperature
•Regulation:
a) Output Voltage Tolerance: ±0.5% when the load is 50% and the temperature is from +15°C to +35°C; < ±0.7% when the
load is 50% and the temperature is from -5°C to +55°C; < ±1% when the load is 50% and the temperature is from -20°C to
+55°C.
b) Temperature Regulation: < ±0.02% when the load is 50% at -48 VDC and temperature range is from -10°C to +55°C.
c) Dynamic Response: The dynamic response time at rated input and output voltage is ≤ 200us and overshot ≤ 5% for load
changes at 50%-25%-50% and 50%-75%-50%.
d) The output voltage is accurate at half load. The half-load voltage regulation accuracy is 570mV. Static regulation will
give other voltage depending on load. The default value at half load is 57 VDC.
0
10
20
30
40
50
60
0 5 10 15 20 25 30 35 40
Output Voltage (V)
Output Current (A)
Output voltage v.s. Output current at max. peak power
0
20
40
60
80
100
120
-40 -20 020 40 60 80 100
% of output power
Temperature (
℃
)
Output power vs. Temperature at -41VDC ≥Vin ≥ -58VDC

Vertiv™ NetSure™ DC/DC Converter Module User Manual
3
•Filtering:
a) Peak-peak voltage is ≤ 250mV at 1-100MHz and normal output voltage.
b) Psophemetic noise voltage is ≤ 2mV between 5-100% of the maximum load (output voltage > 56 VDC).
c) Wideband noise is < 20mV rms between 25HZ-20kHz (test according to ETS300132).
d) Output noise according to Telcordia GR-947-CORE: < 38 dBrnC (between 5-100% of the maximum load, output voltage >
56 VDC).
•Ripple Attenuation: Ripple attenuation is better than +24dB, input to output and f < 360Hz.
1.2.2 DC Input Ratings
•Voltage: Nominal -48 volts DC.
•Nameplate Rating: -41 to -58.5 VDC, 53A max.
•Inrush Current: The peak value of the inrush current does not exceed 2 times the maximum steady-state peak value.
•Input Regulation: ≤ ±0.2% when the load is 100% at -42 to -58.5 VDC input and temperature is +25°C.
•Temperature Coefficient: ≤ ±0.02%/°C over the specified operating temperature range.

Vertiv™ NetSure™ DC/DC Converter Module User Manual
4
•Typical Input Data: When equipped with one DC-DC converter.
a) See Table 1.1.
b) Maximum Current: Input current is 53 amperes at -41.0 volts DC input and 2000W peak power.
Table 1.1: Typical Input Data
Input
Voltage
Percent
of Full Load
Input Current
(Amps)
Efficiency
(%)
Typical Heat
Dissipation
(BTU/Hr)
41 VDC
10 4.29 91.19 48.18
20 8.25 94.82 56.64
30 12.27 95.58 72.43
40 16.37 95.47 98.90
50 20.50 95.27 129.26
60 24.67 94.91 166.75
70 28.90 94.49 210.29
80 33.19 94.02 260.81
90 37.55 93.48 319.92
100 41.90 94.96 280.34
53.5 VDC
10 3.30 90.79 50.36
20 6.35 94.38 61.48
30 9.43 95.31 76.89
40 12.57 95.32 102.32
50 15.73 95.20 131.22
60 18.93 94.84 169.15
70 22.16 94.49 210.51
80 25.44 94.04 260.22
90 28.78 93.47 320.45
100 32.11 92.96 383.52
58 VDC
10 3.05 90.65 51.12
20 5.86 94.37 61.61
30 8.71 95.20 78.72
40 11.61 95.18 105.40
50 14.52 95.03 135.71
60 17.47 94.74 172.24
70 20.45 94.43 212.75
80 23.48 93.93 264.65
90 26.55 93.41 323.21
100 29.59 93.03 379.43
NOTE! The output voltage of the DC-DC converter is initially adjusted to 57 volts DC
at 50% load and 48 volts DC input.