Vertiv NetSure 562579 User manual

NetSure™ -48 VDC
Distribution Unit
Installation and User Manual
Specification Number: 562579

Vertiv™ NetSure™ -48 VDC Distribution Unit Installation and User Manual
Vertiv™ NetSure™ -48 VDC Distribution Unit Installation and 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.

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TABLE OF CONTENTS
Admonishments Used in this Document.............................................................................................................................iv
Important Safety Instructions..................................................................................................................................................v
Safety Admonishments Definitions ..........................................................................................................................................................................................................................v
Safety and Regulatory Statements...........................................................................................................................................................................................................................v
Déclarations de Sécurité et de Réglementation...........................................................................................................................................................................................v
1Description ................................................................................................................................................................................1
2Specifications...........................................................................................................................................................................1
2.1 Electrical.................................................................................................................................................................................................................................................................................1
2.2 Environmental..................................................................................................................................................................................................................................................................2
2.3 Compliance Information..........................................................................................................................................................................................................................................2
2.4 Dimensions and Weight..........................................................................................................................................................................................................................................2
3Accessories ..............................................................................................................................................................................3
3.1 23” Mounting Bracket Adapter Plates, P/N 563148 ......................................................................................................................................................................3
3.2 Bullet Nose Type Load Distribution Circuit Breakers.................................................................................................................................................................3
3.3 Bullet Nose Bypass Busbar with Handle, P/N 563020...............................................................................................................................................................3
3.4 GMT Load Distribution Fuses ...........................................................................................................................................................................................................................3
3.5 Lugs ..................................................................................................................................................................................................................................................................................5
4Installing the Distribution Unit..........................................................................................................................................6
4.1 General ..................................................................................................................................................................................................................................................................................6
4.2 Securing the Distribution Unit to a Relay Rack or a Cabinet Equipment Rack (if required)..................................................................6
4.3 Installing Circuit Breakers and Fuses.........................................................................................................................................................................................................8
5Making Electrical Connections .......................................................................................................................................10
5.1 Important Safety Instructions.........................................................................................................................................................................................................................10
5.2 Wiring Considerations............................................................................................................................................................................................................................................10
5.3 Relay Rack / Cabinet Frame Grounding Connection................................................................................................................................................................10
5.4 Distribution Unit Frame Grounding Connection...........................................................................................................................................................................10
5.5 External Circuit Breaker / Fuse Alarm Connections................................................................................................................................................................... 11
5.6 Load Distribution Wiring to GMT Fuse Blocks ................................................................................................................................................................................13
5.7 Load Distribution Wiring to Distribution Circuit Breakers....................................................................................................................................................13
5.8 Input Wiring ......................................................................................................................................................................................................................................................................17
6Initial Startup.........................................................................................................................................................................17
7Troubleshooting and Repair ............................................................................................................................................17
7.1 Contact Information..................................................................................................................................................................................................................................................17
7.2 Replacement Procedures................................................................................................................................................................................................................................... 18
7.2.1 Replacing a Distribution Device.............................................................................................................................................................................................18

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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 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, 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, OS
HA)

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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.
Safety and Regulatory Statements
Refer to Section 4154 (provided with your customer documentation) for Safety and Regulatory Statements.
Déclarations de Sécurité et de Réglementation
Reportez-vous à la Section 4154 (fourni avec les documents de votre client) pour les déclarations de sécurité et de réglementation.

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1Description
A 1RU high by 19” wide distribution unit with (12) GMT fuse load positions and (4) bullet nose-type circuit breaker load positions.
Provides…
•(12) GMT fuse load distribution positions (0 A to 15 A).
•(4) bullet nose-type circuit breaker load distribution positions (1 A to 150 A).
•Three (3) input connection points.
•CBA/FA alarm relay contacts and resistive battery for connection to external alarms.
2Specifications
2.1 Electrical
1. Input / Output Voltage: Nominal –48 VDC.
2. Maximum Input Current: 150 A.
3. Maximum Load Distribution Current: 150 A at @ +40 °C (+104 °F) and 80 A @ +65 °C (+149 °F).
4. Maximum GMT Fuse Block Capacity:35 A @ +40 °C (+104 °F) and 30 A @ +65 °C (+149 °F).
5. Maximum GMT Fuse Size: 15 A.
6. Maximum Load Distribution Circuit Breaker Size: 150 A @ +40 °C (+104 °F) or +65 °C (+149 °F).
7. Circuit Breaker / Fuse Alarm Circuit: A set of Form-C alarm relay contacts and resistive battery are provided for connection
to external CBA/FA alarms. Relay contacts rated for 2 A @ 30 VDC, 0.6 A @ 110 VDC, and 0.6A @ 125 VAC.

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2.2 Environmental
1. Operating Ambient Temperature Range: -40 °C to +65 °C (-40 °F to +149 °F).
2. Storage Ambient Temperature Range: -40 °C to +70 °C (-40 °F to +158 °F).
3. Relative Humidity: Capable of operating in an ambient relative humidity range of 0% to 95%, non-condensing.
4. Altitude: Capable of operating in an altitude range of -200 feet to 10,000 feet. The maximum operating ambient temperature
should be de-rated by 3 °C per 1000 feet above 6562 feet.
2.3 Compliance Information
1. Safety Compliance: This panel is UL Recognized for use in DC Power Distribution Centers for Communications Equipment.
2. NEBS Compliance: Compliance verified by a Nationally Recognized Testing Laboratory (NRTL) per GR-1089-CORE and GR-
63-CORE. Contact Vertiv for NEBS compliance reports.
3. GR-3108: GR-3108 Class 2 Compliant.
2.4 Dimensions and Weight
See Figure 2.1.
Figure 2.1 Dimensions and Weight
13.56
12.6
Front View
19” to 23” Mounting Bracket Adapters
Rear View
Top View
Right Side ViewLeft Side View
2.33
1.4
6.00
1.25
1.25
22.30
23.00
17.60
18.30
19.00
Notes:
1. Dimensions are in inches,
unless otherwise specified.
2. Finish: Galvanized Steel.
3. Weight:
Net: 13.5 lbs.
4. 19” to 23” mounting bracket
adapters can be attached to the
standard 19” mounting brackets.
5. Standard 19” mounting angles can
be adjusted for 1.4” or 5” front
projection mounting.
1.72

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3Accessories
Order the following by part number as required.
3.1 23” Mounting Bracket Adapter Plates, P/N 563148
Provides two (2) mounting bracket adapters to install the shelf in a 23” relay rack or cabinet
rack. Attaches to the 19” standard brackets to allow 23” mounting.
3.2 Bullet Nose Type Load Distribution Circuit Breakers
The distribution unit holds up to four (4) single-pole or up to two (2) double-pole bullet nose-type load
distribution circuit breakers.
Order circuit breakers as required per Table 3.1.When ordering 2-pole devices, a “Special Application Crimp
Lug / Strap Combination” must be ordered per device. See “Special Application Crimp Lug / Strap
Combination” on page 6. See Table 5.2 for recommended load distribution wire sizes and lugs. Load should
not exceed 80% of device rating.
3.3 Bullet Nose Bypass Busbar with Handle, P/N 563020
Replaces a bullet nose circuit breaker when a protective or disconnect device is not required.
NOTE! The distribution unit holds up to four (4) bypass busbars.
3.4 GMT Load Distribution Fuses
The distribution unit holds up to twelve (12) GMT load distribution fuses.
Order GMT fuses as required per Table 3.2.
When used for power distribution, load should not exceed 80% of device rating, except 10 A and 15 A fuses, for which load should not
exceed 70% of device rating.
23” Mounting
Bracket Adapters
P/N 563148
Bypass Busbar
P/N 563020
Toggle Handle
Bullet Nose Circuit Breaker

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Table 3.1 Toggle Handle Bullet Nose Type Circuit Breakers
Ampere
Rating
Number
of Poles
Number of
Mounting
Positions
Required
Part Number
Electrical Trip1
(White Handle)
Electrical /
Mechanical Trip2
(Black Handle)
1 1 1 102272 101596
3 1 1 102273 101597
5 1 1 102274 101598
10 1 1 102275 101599
15 1 1 102276 101600
20 1 1 102277 101601
25 1 1 102278 101602
30 1 1 102279 101603
35 1 1 102280 101604
40 1 1 102281 101605
45 1 1 121998 121997
50 1 1 102282 101606
60 1 1 102283 101607
70 1 1 102284 101608
75 1 1 102285 101609
80 1 1 121996 121995
90 1 1 138887 138888
100 1 1 102286 101610
125 2 2 516991 516838
150 2 2 516993 516839
Circuit Breaker Alarm Operation:
1Provides an alarm during an electrical trip condition only.
2 Provides an alarm during an electrical or manual trip condition.

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Table 3.2 GMT Fuses
Ampere Rating Part Number Fuse Color
18/100 (GMT-A) 248610301 --
1/4 248610200 Violet
1/2 248610300 Red
3/4 248610500 Brown
1-1/3 248610700 White
2 248610800 Orange
3 248610900 Blue
5 248611000 Green
7-1/2 248611300 Black-White
10 248611200 Red-White
15 248611500 Red-Blue
Replacement Safety Fuse
Cover (GMT-Y) 102774 --
Replacement Dummy Fuse 248872600 --
3.5 Lugs
Standard Crimp Lugs
For use on the front circuit breaker load busbars and rear input busbars.
Specify part number from Table 3.3 for desired lead size.
Maximum single lug size for front breaker connections is 2 AWG narrow tongue lug P/N 140541.
Maximum lug size for rear input landing point connections is 1/0 AWG flex wire lug P/N 112902.
Table 3.3 Crimp Lug, Two-Hole, 1/4” Bolt Clearance Hole, 5/8” Centers
Lead Size Part Number
14-10 AWG 245342300
8 AWG 245390200
6 AWG 245346700
4 AWG 245346800
2 AWG 245346900
2 AWG 140541
(Narrow Tongue)
1/0 AWG
112902
(Narrow Tongue)
(Flex Wire)
Note: Lugs should be crimped per lug manufacturer’s specifications.

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Special Application Crimp Lug / Strap Combination
Straps two circuit breaker wiring positions together, and provides a crimp-type lug which allows distribution wiring up to 4/0 AWG.
Designed for use with 125 A and larger bullet nose-type circuit breakers, which require two mounting positions.
Specify part number from Table 3.4 for desired lead size.
Maximum double lug size for front breaker connections is 4/0 AWG lug P/N 245393800.
Table 3.4 Special Application Crimp Lug / Strap Combination (Two-Hole Lug, 1/4” Bolt Clearance Hole, 5/8” Centers)
Lead Size Part Number
1/0 AWG 245393500
2/0 AWG 245393600
3/0 AWG 245393700
4/0 AWG 245393800
4Installing the Distribution Unit
4.1 General
This product is intended for installation in network telecommunication facilities (CO, vault, hut, or other environmentally controlled
electronic equipment enclosure).
This product is intended to be connected to the common bonding network in a network telecommunication facility (CO, vault, hut, or
other environmentally controlled electronic equipment enclosure).
4.2 Securing the Distribution Unit to a Relay Rack or a Cabinet Equipment
Rack (if required)
DANGER! If the distribution unit is mounted in a relay rack, the relay rack must be securely anchored to the floor before the
distribution unit is installed.
The distribution unit is designed to mount in a standard 19” relay rack or equipment rack having 1” or 1-3/4” multiple drillings. 23”
mounting bracket adapter plates are available. Refer to Figure 2.1 on page 2 for overall dimensions.
Procedure
1. For 23” mounting, attach the 23” mounting bracket adapter plates to the standard 19” mounting brackets.
2. Position the distribution unit in the relay rack or cabinet equipment rack.
3. Secure the distribution unit to the relay rack or cabinet equipment rack using hardware as shown in Figure 4.1 (see Figure
4.1 for recommended torque). Use grounding washers as indicated in Figure 4.1.
NOTE! Install (orient) the ground washers so the teeth dig into the mounting angles for a secure ground connection.
NOTE! Compliance with Telcordia GR-1089-CORE requires that prior to mounting the system to the equipment rack:
All paint must be removed from the front surface of each equipment rack rail where it mates with a shelf-mounting bracket,
so that good metal-to-metal contact can be established between the shelf and rack.
•The shelf-to-rack mating surfaces must be cleaned.
•Electrical anti-oxidizing compound must be applied to the shelf-to-rack mating surfaces.

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Figure 4.1 Mounting the Distribution Unit in a Relay Rack or a Cabinet Equipment Rack
MOUNTING HARDWARE
12-24 x 3/4" Thread Forming
Hex Head Screw
No. 10/12 Ground Washer
Torque: 65 in-lbs.
Front

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4.3 Installing Circuit Breakers and Fuses
Refer to “Specifications” on page 1 for any temperature, sizing, and spacing restrictions.
GMT Load Distribution Fuses
Procedure
1. Install correctly sized GMT fuses into the fuseholders located on the front of the distribution unit, as required. If a dummy
fuse is installed, first remove the dummy fuse. Install a safety fuse cover over each GMT fuse. Install a dummy fuse in all
unused fuse positions. See Figure 4.2.
Figure 4.2 Installing GMT Load Distribution Fuses
Front
GMT Fuse
Safety Cover

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Installing Bullet Nose Type Circuit Breakers
Procedure
1. Ensure that the circuit breaker is in the OFF position and is of the correct rating. Orient the circuit breaker as shown in
Figure 4.3. Insert the terminals on the rear of the circuit breaker into their corresponding sockets on the distribution unit.
Ensure the alarm contact on the back of the circuit breaker makes contact with the alarm terminal on the distribution unit.
Push distribution device in firmly until fully seated in the distribution unit.
Figure 4.3 Installing Bullet-Nose-Type Load Distribution Circuit Breakers
Components removed in illustration for clarity only.Turn circuit breaker off before installing.
Load Disconnect
Circuit Breakers
Front
Load Distribution
Circuit Breakers
Insert these
terminals into
corresponding
sockets on
distribution unit .
Insert these
terminals into
corresponding
sockets on
distribution unit .
Shorter Side
of Breaker
Longer Side
of Breaker
Longer Side
of Breaker
OFF
Position
Towards
Center

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5Making Electrical Connections
5.1 Important Safety Instructions
DANGER! Adhere to the “Important Safety Instructions” presented at the front of this document.
WARNING! When this panel is used in non-factory integrated systems, external branch circuit protection is required for all
input feeds.
5.2 Wiring Considerations
All wiring, branch circuit protection, and grounding should follow the current edition of the American National Standards Institute
(ANSI) approved National Fire Protection Association's (NFPA) National Electrical Code (NEC), and applicable local codes. For
operation in countries where the NEC is not recognized, follow applicable codes.
Refer to Table 5.1 for supplemental lug crimping information when using the special application crimp lug / strap combination.
Table 5.1 Supplemental Lug Crimping Information when Using the Special Application Crimp Lug / Strap Combination
Crimp Lug Part No.
Crimp Tool Required1,
T&B Model TBM12 or TBM15 Hydraulic Heads
Color Key Die Index/
Code No.
Die Cat.
Number
245393500 Burndy:
YA25L-4TCG1 Pink 42H 15508
245393600 Burndy:
YA26L-4TCG1 Black 45 15526
245393700 Burndy:
YA27L-4TCG1 Orange 50 15530
245393800 Burndy:
YA28L-4TCG1 Purple 54H 15511
1The lugs should be crimped to the specifications given in the manufacturer’s instructions furnished with the
crimp tool or lug.
5.3 Relay Rack / Cabinet Frame Grounding Connection
NOTE! This applies to the relay rack or cabinet equipment rack the distribution unit is installed in.
For relay rack / cabinet frame grounding requirements, refer to the current edition of the American National Standards Institute
(ANSI) approved National Fire Protection Association's (NFPA) National Electrical Code (NEC), applicable local codes, and your
specific site requirements.
5.4 Distribution Unit Frame Grounding Connection
For distribution unit frame grounding requirements, refer to the current edition of the American National Standards Institute (ANSI)
approved National Fire Protection Association's (NFPA) National Electrical Code (NEC), applicable local codes, and your specific site
requirements.

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Procedure
1. The frame grounding connection to the distribution unit is made by using grounding washers with the mounting hardware
used to secure the distribution unit to the relay rack or cabinet. Refer to “Securing the Distribution Unit to a Relay Rack or a
Cabinet Equipment Rack” on page 6. Ensure that the relay rack or cabinet is properly grounded.
NOTE! An M4 frame ground stud is located on the rear of the distribution unit. Provide a grounding lead to this connection
point, if required. Refer to
Figure 5.1 for location.
Figure 5.1 Distribution Unit Frame Grounding Connection Points
5.5 External Circuit Breaker / Fuse Alarm Connections
External circuit breaker alarm / fuse alarm wiring is made to terminal block J3 located on alarm circuit card P/N 541183. Refer to
Figure 5.2 for location. Terminal block J3 accepts a wire size in the range of 26 AWG to 14 AWG. Recommended torque is 0.5 Nm to
0.6 Nm.
•If a circuit breaker or fuse in the distribution unit opens, relay contacts open between terminals 2 and 3 of J3 and relay
contacts close between terminals 3 and 4 of J3. Normal operation provides close relay contacts between terminals 2 and 3 of
J3 and open relay contacts between terminals 3 and 4 of J3.
•If a circuit breaker or fuse in the distribution unit opens, -48 VDC is provided at terminal 1 of J3.
M4 Shelf Frame
Ground Stud
Rear
(rear cover removed
for clarity only)

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Figure 5.2 External Circuit Breaker / Fuse Alarm Connections
FA
NC
COM
NO
J3
1234
Circuit Breaker Alarm /
Fuse Alarm Circuit Card
Relay shown in the deenergized state.
Relay is normally deenergized and energizes during an alarm condition.
Rear
(rear cover removed
for clarity only)

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5.6 Load Distribution Wiring to GMT Fuse Blocks
WARNING! Observe proper polarity when making load connections.
NOTE! When used for power distribution, load should not exceed 80% of device rating, except 10 A and 15 A fuses, for which
load should not exceed 70% of device rating.
Load and load return leads are connected to screw-type terminal blocks located on the front of the distribution unit (refer to Figure
5.3). Refer to Figure 5.3 also for terminal block wire size capacity and recommended torque.
The rating of the distribution device determines the wire size requirements. Refer to the American National Standards Institute
(ANSI) approved National Fire Protection Association's (NFPA) National Electrical Code (NEC) and applicable local codes.
5.7 Load Distribution Wiring to Distribution Circuit Breakers
WARNING! Observe proper polarity when making load connections.
NOTE! Load should not exceed 80% of device rating.
Load and load return leads terminated in two-hole lugs are connected to threaded studs located on the front sides of the distribution
unit (refer to Figure 5.3). Refer to Figure 5.3 also for stud size/spacing and recommended torque.
The rating of the distribution device determines the wire size and lug requirements. Refer to the American National Standards
Institute (ANSI) approved National Fire Protection Association's (NFPA) National Electrical Code (NEC) and applicable local codes.
All lugs for customer connections must be ordered separately. See Table 3.3 and Table 3.4 for available lugs.
For wire size and lug selection, refer to Table 5.2.

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Table 5.2 Recommended Load Distribution Wire Size and Lug Selection for Bullet Nose-Type Circuit Breaker
(Load and Load Return) (cont’d on next page)
Circuit Breaker
Amperage
Recm 90 °C Wire Size (1)
14 AWG 12 AWG 10 AWG 8 AWG 6 AWG 4 AWG 2 AWG
Loop Length (feet) (2)
1, 3, 5,
10 A
37 (3, 4, 5) 58 (3, 4, 5) 93 (3, 4, 5) 148 (3, 4, 5) 236 (3, 4, 5) 376 (3, 4, 5) 597 (3, 4, 5)
15 A 24 (3, 4) 39 (3, 4, 5) 62 (3, 4, 5) 99 (3, 4, 5) 157 (3, 4, 5) 250 (3, 4, 5) 398 (3, 4, 5)
20 A -- 29 (3, 4) 46 (3, 4, 5) 74 (3, 4, 5) 118 (3, 4, 5) 188 (3, 4, 5) 298 (3, 4, 5)
25 A -- -- 37 (3, 4,) 59 (3, 4, 5) 94 (3, 4, 5) 150 (3, 4, 5) 239 (3, 4, 5)
30 A -- -- 31 (3, 4) 49 (3, 4, 5) 78 (3, 4, 5) 125 (3, 4, 5) 199 (3, 4, 5)
35 A -- -- -- 42 (3, 4) 67 (3, 4, 5) 107 (3, 4, 5) 170 (3, 4, 5)
40 A -- -- -- 37 (3, 4) 59 (3, 4, 5) 94 (3, 4, 5) 149 (3, 4, 5)
45 A -- -- -- 33 (3, 4) 52 (3, 4) 83 (3, 4) 132 (3, 4)
50 A -- -- -- 29 (3) 47 (3, 4,) 75 (3, 4) 119 (3, 4)
60 A -- -- -- -- 39 (3, 4) 62 (3, 4) 99 (3, 4)
Recommended Crimp Lug
Lug
245342300 (6) 245342300 (6) 245342300 (6) 245390200 (6) 245346700 (6) 245346800 (6) 140541 (6)