Vertiv NetSure 802 Series User manual

NetSure™ 802 Series
-48 VDC Power System
User Manual (Section 5877), Revision V
Specification Number: 582140000
Model Number: 802NLDB,802NLEB,802NL-B

Vertiv™ | NetSure™ 802 Series -48 VDC Power System User Manual (Section 5877)|Rev. V
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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
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............................................................6
Important Safety Instructions ..............................................................................7
Safety Admonishments Definitions......................................................................................................7
General Safety ...........................................................................................................................................................7
Voltages...........................................................................................................................................................................7
AC Input Voltages........................................................................................................................................................ 7
DC Output and Battery Voltages .................................................................................................................. 7
Battery .............................................................................................................................................................................. 8
Personal Protective Equipment (PPE)............................................................................................. 9
Hazardous Voltage.............................................................................................................................................. 9
Handling Equipment Containing Static Sensitive Components............................. 9
Maintenance and Replacement Procedures..............................................................................9
Static Warning.........................................................................................................10
FCC Information.......................................................................................................11
Customer Documentation Package................................................................... 13
System Description................................................................................................14
Description.................................................................................................................................................................14
System Overview Illustrations................................................................................................................. 17
Navigating the MCA ............................................................................................. 36
1BMCA Local Control Panel and Display ..........................................................................................36
2BMCA Numbering Scheme ..........................................................................................................................38
3BMCA Messages......................................................................................................................................................41
System Operating Procedures........................................................................... 96
LMS Operating Procedures......................................................................................................................96
LMS Local Port .....................................................................................................................................................96
Local Controls and Indicators................................................................................................................97
External Alarms ..................................................................................................................................................101
Starting and Stopping System Operation................................................................................ 101
Restarting Procedures when Rectifier is Automatically or Manually
Inhibited, Shut Down, or Locked Out........................................................................................... 102
Output Voltage Mode of Operation Selection.................................................................... 102
Placing the System into the Float Mode of Operation .......................................................102
Placing the System into the Test/Equalize Mode of Operation................................102
Setting MCA Audible Alarm Cutoff Reset Time Period ............................................108
Setting Rectifier Sequencing Delay Time Period............................................................109
Setting MCA Custom Text Messages (Names).................................................................110
Mapping LMS LED Channels to the MCA Display and MCA
Customer Alarm Relays................................................................................................................................111
Using the Alarm Relay Test Feature...............................................................................................111
MCA “Power Share” Feature...................................................................................................................112
MCA “Alternate Current Limit” Feature ......................................................................................115

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Power System Remote Temperature Compensation Feature.............................116
MCA System Adjustments..................................................................................117
Adjustment Location and Identification.....................................................................................117
Adjusting Float Output Voltage..........................................................................................................117
Adjusting Test/Equalize Output Voltage ..................................................................................118
Adjusting High Voltage Shutdown ..................................................................................................119
Adjusting Rectifier Current Limit..................................................................................................... 120
Adjusting System High Voltage Alarm 1....................................................................................121
Adjusting System High Voltage Alarm 2 ..................................................................................122
Adjusting System Battery on Discharge Alarm..................................................................123
Adjusting System Very Low Voltage Alarm...........................................................................124
Adjusting Total Distribution Load Alarm..................................................................................125
Adjusting Distribution Group A Load Alarm .........................................................................126
Adjusting Distribution Group B Load Alarm..........................................................................127
Adjusting Battery Ambient High Temperature #1 Alarm (if Battery
Charge Digital Temperature Compensation Probe is installed) .......................128
Adjusting Battery Ambient High Temperature #2 Alarm (if Battery
Charge Digital Temperature Compensation Probe is installed) .......................129
Adjusting Battery Ambient Low Temperature #1 Alarm (if Battery
Charge Digital Temperature Compensation Probe is installed) ...................... 130
Adjusting Battery Ambient Low Temperature #2 Alarm (if Battery
Charge Digital Temperature Compensation Probe is installed) ........................131
Configuring Battery Charge Digital Temperature Compensation
Slope..............................................................................................................................................................................132
Configuring Battery Charge Digital Temperature Compensation
Maximum Voltage............................................................................................................................................133
Configuring Battery Charge Digital Temperature Compensation
Minimum Voltage .............................................................................................................................................134
Configuring Degree Units Displayed (°F or °C) ................................................................135
Configuring the System Date and Time....................................................................................136
Configuring MCA I/O Circuit Card Analog Input(s) .......................................................137
Configuring MCA I/O Circuit Card Analog Output(s)..................................................138
Configuring MCA I/O Circuit Card Binary Input(s) .........................................................139
MCA Audible Alarm Cutoff Reset Time Period .................................................................140
MCA Rectifier Sequencing Feature...............................................................................................140
Manually Initiated Timed Test/Equalize Feature ............................................................140
Automatic Test/Equalize Feature...................................................................................................140
MCA Power Share Feature.....................................................................................................................140
Alarm Relay Test Feature........................................................................................................................140
MCA “Alternate Current Limit” Feature ....................................................................................140
System Maintenance ........................................................................................... 141
LMS Maintenance Procedures.............................................................................................................141
System Maintenance Procedures....................................................................................................142
Adding a Rectifier.............................................................................................................................................147
System Troubleshooting and Repair...............................................................148

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Contact Information...................................................................................................................................... 148
LMS Troubleshooting Procedures................................................................................................. 149
Troubleshooting Information............................................................................................................... 149
Replacement Information.........................................................................................................................152
Replacement Procedures.........................................................................................................................152
Adding a Battery Charge Digital Temperature Compensation Probe
to a Previously Operated System.................................................................................................... 166
Removing a Battery Charge Digital Temperature Compensation
Probe from a Previously Operated System ............................................................................167

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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 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 st
andards. (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)

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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 6.
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. AC
input power must be completely disconnected from the branch circuits wiring used to provide power to
the system before any AC electrical connections are made. Follow local lockout/tagout procedures to
ensure upstream branch circuit breakers remain de-energized during installation. DO NOT apply AC
input power to the system until all electrical connections have been completed and checked.
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.
DANGER! Follow local lockout/tagout procedures to ensure DC branch circuit protection devices
remain de-energized during installation at loads, as required.

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Battery
Refer to the battery manufacturer documentation for specific battery safety instructions. The following are
general guidelines.
WARNING! Correct polarity must be observed when connecting battery leads.
WARNING! Special safety precautions are required for procedures involving handling, installing, and
servicing batteries. Observe all battery safety precautions in this manual and in the battery instruction
manual. These precautions should be followed implicitly at all times.
WARNING! A battery can present a risk of electrical shock and high short circuit current. Servicing of
batteries should be performed or supervised only by properly trained and qualified personnel
knowledgeable about batteries and the required precautions.
The following precautions should be observed when working on batteries:
•Follow the recommended PPE requirements per the SDS for the battery to be used.
•Batteries are an energy source that can produce high amounts of electrical current.
•Remove watches, rings, and other metal objects.
•Eye protection should be worn to prevent injury from accidental electrical arcs.
•Use certified and well maintained insulated tools. Use double insulated tools appropriately rated for
the work to be performed. Ensure that wrenches with more than one working end have only one
end exposed.
•Do not lay tools or metal parts on top of batteries.
•Verify that no current will flow when the battery is connected or disconnected by opening battery
disconnects (if available) or adjusting the system to match battery voltage.
•Risk of explosion if battery is replaced with an incorrect type or if polarity is reversed.
Recommended to replace batteries with the same manufacturer and type, or equivalent.
•Dispose of used batteries according to the instructions provided with the batteries. Do not dispose
of batteries in a fire. They may explode.
•Batteries may generate explosive gases during normal operation. Systems containing batteries
should never be installed in an airtight room or space. Only install in a ventilated environment.
•Batteries may contain sulfuric acid. If battery acid enters your eye, immediately flush your eye with
running cold water for at least 15 minutes. Get medical attention immediately. If battery acid
contacts skin or clothing, wash immediately with soap and water.
•Do not open or mutilate batteries.
•ALWAYS FOLLOW THE BATTERY MANUFACTURER’S RECOMMENDATIONS AND SAFETY
INSTRUCTIONS.

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ALERT! Performing maintenance and/or troubleshooting procedures may interrupt power to the loads,
if battery reserve is not sufficient.
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 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”.
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 in “Static Warning” on page 10.
Maintenance and Replacement Procedures
CAUTION! When performing any step in procedures that requires removal or installation of hardware,
use caution to ensure no hardware is dropped and left inside the unit; otherwise service interruption or
equipment damage may occur.
NOTE! When performing any step in procedures that requires removal of existing hardware, retain all
hardware for use in subsequent steps, unless otherwise directed.

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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
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.

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FCC INFORMATION
The MCA Interface Modem Option (if installed) has been granted a registration number by the Federal
Communications Commission, under Part 68 rules and regulations for direct connection to the telephone lines.
In order to comply with these FCC rules, the following instructions must be carefully read and applicable
portions followed completely:
a) Direct connection to the telephone lines may be made only through the standard plug- ended cord
furnished to the utility-installed jack. No connection may be made to party or coin phone lines. Prior to
connecting the device to the telephone lines, you must:
b) Call your telephone company and inform them you have an FCC registered device you desire to connect
to their telephone lines. Give them the number(s) of the line(s) to be used, the make and model of the
device, the FCC registration number and ringer equivalence. This information will be found on the
device or enclosed with instructions as well as the jack suitable for your device.
c) After the telephone company has been advised of the above you may connect your device if the jack is
available, or after the telephone company has made the installation.
d) Repairs may be made only by the manufacturer or his authorized service agency. Unauthorized repairs
void registration and warranty. Contact seller or manufacturer for details of permissible user performed
routine repairs, and where and how to have other than routine repairs.
e) If, through abnormal circumstances, harm to the telephone lines is caused, it should be unplugged until
it can be determined if your device or the telephone line is the source. If your device is the source, it
should not be reconnected until necessary repairs are effected.
f) Should the telephone company notify you that your device is causing harm, the device should be
unplugged. The telephone company will, where practicable, notify you, that temporary discontinuance of
service may be required. However, where prior notice is not practicable, the telephone company may
temporarily discontinue service, if such action is reasonably necessary, in such cases the telephone
company must (A) Promptly notify you of such temporary discontinuance, (B) Afford you the
opportunity to correct the condition and (C) Inform you of your rights to bring a complaint to the FCC
under their rules.
g) The telephone company may make changes in its communications facilities, equipment, operations or
procedures, where such action is reasonably required in the operation of its business and is not
inconsistent with FCC rules. If such changes can be reasonably expected to render any customer’s
devices incompatible with telephone company facilities, or require modification or alteration, or
otherwise materially affect its performance, written notification must be given to the user, to allow
uninterrupted service.
The following information is provided here and on a label attached to the outside of the MCA Interface Modem
Option (if installed).
JACK RINGER EQUIVALENCE FCC REGISTRATION NUMBER
RJ-11 0.2A B46USA-22429-MM-E

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CUSTOMER DOCUMENTATION PACKAGE
NOTE! These instructions are for the NetSure™ 802 Series -48 VDC Power System, Model 802NLDB
(208V Input Power/Distribution and Power Only Bays), 802NLEB (480V Input Power/Distribution and
Power Only Bays), and 802NL-B(Distribution Only Bay); Spec. No. 582140000. This power system is
equipped with the MCA (Meter, Control, Alarm Panel) and LMS (Lorain Monitoring System).
If you have a NetSure™ 8200 Series -48 VDC Power System, Model 8200NLDB (208V Input
Power/Distribution and Power Only Bays), 8200NLEB (480V Input Power/Distribution and Power Only
Bays), and 8200NL-B(Distribution Only Bay); Spec. No. 582140000, refer to UM582140000 provided with
your system. This power system is equipped with the NCU controller.
This document (Section 5877) provides User Instructions for the NetSure™ 802 Series -48 VDC Power System,
Model 802NLDB (208V Input Power/Distribution and Power Only Bays), 802NLEB (480V Input Power/Distribution
and Power Only Bays), and 802NL-B(Distribution Only Bay); Spec. No. 582140000.
The complete Customer Documentation Package consists of…
NetSure™ 802 Series
•MCA Menu Tree: Section 5886
•Power System Installation Instructions: Section 5876
•Power System User Instructions: Section 5877
•Power System Installation Guide: Section 5957
(condensed version of Section 5876 Installation Instructions)
•Power System “System Application Guide”: SAG582140000
•Contact Information Page: Section 4154
•Engineering Drawings
-SD582140000
-T582140000
Optional Integrated LMS System
•LMS “System Application Guide”: SAG586505000
•LMS Installation Instructions: Section 5879
•LMS User Instructions: Section 5847

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SYSTEM DESCRIPTION
Refer to SAG582140000 (System Application Guide) for additional information.
Description
-48 VDC @ up to 10,000 Amperes Power System
The NetSure™ 802 Series -48 VDC power system is an integrated power system containing rectifiers, intelligent
control, metering, monitoring, and distribution.
This power system is designed to power a load while charging a positive grounded battery. This power system
is designed for operation with the positive output grounded. This power system is capable of operating in a
batteryless installation or off battery for maintenance purposes.
This system can consist of the following components.
Power/Distribution Bays
The system can consist of one (1) primary power/distribution bay and up to nine (9) additional secondary
power/distribution bays.
The system can be expanded right or left.
Each power/distribution bay can be equipped with up to ten (10) rectifiers and provides distribution.
Distribution is divided into two buses which accept a choice of fuse and circuit breaker types and sizes.
Each Power/Distribution Bay contains a Monitor and Control Panel. In the Primary Power/Distribution Bay, this
panel houses the Meter-Control-Alarm (MCA) assembly. This panel in the Primary Power/Distribution Bay also
houses the optional LMS Main CPU circuit card of the integrated LMS Monitoring System. In a Secondary
Power/Distribution Bay, this panel can be equipped with an optional LMS Expansion CPU circuit card. (The
optional LMS Monitoring System provides a higher level of monitoring and controlling capabilities to the power
system.)
The Monitor and Control Panel in both Primary and Secondary Power/Distribution Bays contain a seven-slot
card cage to house MCA alarm relay circuit cards, MCA input/output (I/O) circuit cards, and optional LMS I/O
circuit cards. (If a Secondary Power/Distribution Bay is to be equipped with optional LMS I/O circuit cards, it
must also be equipped with an LMS Expansion CPU circuit card.)
Power Only Bays
The system can consist of one (1) primary power only bay and up to nine (9) additional secondary power only
bays.
The system can be expanded right or left.
Each power only bay can be equipped with up to ten (10) rectifiers.
Each Power Only Bay contains a Monitor and Control Panel. In the Primary Power Only Bay, this panel houses
the Meter-Control-Alarm (MCA) assembly. This panel in the Primary Power Only Bay also houses the optional
LMS Main CPU circuit card of the integrated LMS Monitoring System. In a Secondary Power Only Bay, this
panel can be equipped with an optional LMS Expansion CPU circuit card. (The optional LMS Monitoring
System provides a higher level of monitoring and controlling capabilities to the power system.)
The Monitor and Control Panel in both Primary and Secondary Power Only Bays contain a seven-slot card cage
to house MCA alarm relay circuit cards, MCA input/output (I/O) circuit cards, and optional LMS I/O circuit

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cards. (If a Secondary Power Only Bay is to be equipped with optional LMS I/O circuit cards, it must also be
equipped with an LMS Expansion CPU circuit card.)
Distribution Only Bays
The system can consist of one (1) to eight (8) distribution only bays. Each distribution only bay provides four
(4) distribution buses. Each distribution bus accepts a choice of 218-type circuit breakers and TPL-type fuses.
A distribution only bay may also be equipped with an optional distribution panel which accepts a choice of
TPS/TLS-type fuseholders or Bullet Nose-type circuit breakers.
Rectifiers
The system contains rectifiers; which provide load power, battery float current, and battery recharge current
during normal operating conditions.
MCA (Meter-Control-Alarm)
The MCA controls the operation of the rectifiers and provides power system control, metering, monitoring, and
alarm functions.
MCA Local Control Panel: This panel is located on the front of the Primary Power/Distribution Bay or Power
Only Bay and contains a keypad, display, and indicators for local MCA User interface.
MCA Relay Circuit Card: Each MCA relay circuit card provides six (6) sets of Form-C relay contacts for
customer external alarms. These relays are User programmable for various power system alarms. Up to sixteen
(16) MCA relay circuit cards can be installed in the Primary and Secondary Power/Distribution and Power Only
Bays. The Primary Power/Distribution and Power Only Bays are factory equipped with two (2) MCA relay circuit
cards.
MCA I/O Circuit Cards: The MCA I/O circuit cards provide analog inputs/outputs and binary inputs. Up to
sixteen (16) MCA I/O circuit cards can be installed in the Primary and Secondary Power/Distribution and Power
Only Bays.
Optional Integrated LMS Monitoring System
The LMS Monitoring System consists of an LMS Main CPU circuit card, optional LMS Expansion CPU circuit
cards, optional LMS I/O circuit cards, optional LMS Expansion Cabinet, and optional LMS Expansion
Assemblies.
The LMS Main CPU circuit card is mounted in the Primary Power/Distribution and Power Only Bays. Each
Secondary Power/Distribution and Power Only Bay that is to be equipped with optional LMS I/O circuit cards
must contain an LMS Expansion CPU circuit card. LMS Expansion Cabinets and LMS Expansion Assemblies
are available that mount into customer equipment.
The LMS Monitoring System is factory integrated within each Power/Distribution, Power Only, and Distribution
Only Bay and requires no additional customer interconnections within the bays. Simple cable connections
between the Power/Distribution, Power Only, and Distribution Only Bays complete the interbay connections
required. Separate analog, binary, and relay circuit cards do not have to be supplied for power system
monitoring. Analog, binary, relay, and temperature circuit cards can be provided to monitor equipment external
to the power system.
The LMS input circuit cards monitor a variety of analog, binary, and temperature points external to the system.
An LMS relay output circuit card is also available which provides programmable relays. These relays may be
used for external alarms, or to control other equipment.

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The LMS Monitoring System can be accessed via a local port, a modem port (when optional modem is ordered),
an optional TL1 port, and an Ethernet port (for Telnet access, optional Web access, optional SNMP access,
optional TL1 access, and Email alarm reporting).
The LMS Monitoring System collects data from the power system and the input circuit cards monitoring
external points. The data collected is used for alarm processing and reporting, and to provide statistics.
The LMS Monitoring System is capable of reporting alarm conditions to a remote terminal, pager, Email address,
via SNMP traps over Ethernet when the SNMP option is ordered, or via TL1 (over Ethernet) when the 'TL1 over
Ethernet' option is ordered. TL1 is also available via a serial connection in 'direct mode'. For remote terminal or
pager notification, the LMS Main CPU circuit card must be equipped with the optional modem. Two types of
alarm reporting mechanisms are provided, System Alarm Reporting and Individual User Alarm Reporting.
Refer to SAG586505000 for further LMS information.
Applications
The NetSure™ 802NLDB and 802NLEB is capable of interfacing with Vortex® Power Systems (VPS).
The NetSure™ 802NLDB and 802NLEB is capable of interfacing with legacy power systems.

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System Overview Illustrations
Power/Distribution Bay
Bay LED (Located on outside of front door)
Green= OK
Red =Bay Failure
Yellow (Flashing) = Communicating withMCA
Spare
Fuseholders
(behind hinged
panel)
Spare
Fuseholders
(behindhinged
panel)
Front Door Removed in
Illustration for Clarity
Note
Each MCA component (i.e. PCU, Bus Monitoring
Circuit Card, Bay Router Circuit Card, MCA Relay
Circuit Card) can be programmed with a custom
text message for identification purposes.
25 Function Channels Provided
Programeach to alarm for selected conditions,
then program customer alarm relays (if furnished)
to activate if a specific function channel alarms.
Power
PCUs
(See Detail J)
System Monitoring and Control
See Detail B
(See Detail D for Front Door Illustration
of MCA Control Panel)
Monitoring
Bus #1 Monitoring Circuit Card (See Detail A)
(behind hinged panel)
Monitoring
Bus #2 Monitoring Circuit Card (See Detail A)
(behind hinged panel)
Distribution
Bus #1
Distribution
Bus #2
Distribution Bus LED
Green = OK
Red =Distribution Bus Failure
Yellow (Flashing) = Communicating withMCA

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Power Only Bay
Bay LED (Located on outside of front door)
Green = OK
Red = Bay Failure
Yellow (Flashing) = Communicating with MCA
Front Door Removed in
Illustration for Clarity
Note
Each MCA component (i.e. PCU, Bus Monitoring
Circuit Card, Bay Router Circuit Card, MCA Relay
Circuit Card) can be programmed with a custom
text message for identification purposes.
25 Function Channels Provided
Program each to alarm for selected conditions,
then program customer alarm relays (if furnished)
to activate if a specific function channel alarms.
Power
PCUs
(See Detail J)
System Monitoring and Control
See Detail B
(See Detail D for Front Door Illustration
of MCA Control Panel)

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Distribution Only Bay
Optional ListC
BulletNose
Device Panel
(notto scale)
Distribution
Bus#1
Monitoring
Bus #1Monitoring
CircuitCard
(SeeDetailA)*
(behind hinged panel)
Distribution
Bus #3
Monitoring
Bus #3 Monitoring
Circui tCard
(See Detail A)*
(behind hinged panel)
Distribution
Bus#2
Monitoring
Bus #2Monitoring
CircuitCard
(See Detail A)*
(behindhingedpanel)
Distribution
Bus #4
Monitoring
Bus #4 Monitoring
Circuit Card
(See Detail A)*
(behind hinged panel)
BayLED
Green=OK
Red=BayFailure
Yellow(Flashing)=Communicating
with MCA
Distribution Bus LED
Green=OK
Red=Distribution BusFailure
Yellow(Flashing)=Communicating
with MCA
Monitoringand ControlSection
See DetailC
Front Door Removed in
Illustration for Clarity
*Spare Fuseholders
are located behind
hinged panel
Front View
Distribution Bay

Vertiv™ | NetSure™ 802 Series -48 VDC Power System User Manual (Section 5877)|Rev. V
20
Detail A - Distribution Bus Monitoring Circuit Card
DISTRIBUTION BUS MONITORING CIRCUIT CARD
(P/N 524982)
Identification
Indicator
Green = OK
Red = Failure
Yellow (Flashing) = Communicating with MCA