This manual contains important instructions for your Uninterruptible Power
Supply (UPS) system. You should follow these instructions during the
installation and maintenance of the UPS, options, accessories, and batteries.
Cette notice contient des instructions importantes
concernant la sécurité.
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at
their own expense.
WARNING:
This is a product for restricted sales distribution to informed partners. Installation
restrictions or additional measures may be needed to prevent disturbances.
The Powerware 9315 Maintenance Bypass Module (MBM) is a
floor-mounted, enclosed cabinet containing a UPS module, Maintenance
Isolation circuit breaker (MIS), and a maintenance Bypass circuit breakr
(MBP). An optional UPS Module Input Bypass circuit breaker (BIB) is available. The MBM
can be either free-standing or line-up-and-match. Figure 1 shows a typical MBM cabinet
with isolation transformer for a Powerware 9315 30---160kVA UPS and MBM cabinet
without isolation transformer for a Powerware 9315 30 ---160kVA UPS.
The equipment and devices described in this manual are provided for operation with the
specific UPS Modules (model and rating) described in the appendix.
BREAKER ANNUNCIATION
UTILITY INPUT,
IF BIB BREAKER
IS NOT
INSTALLED
MBP
MIS
BIB1
BIB2
CRITICAL LOAD
CONNECTIONS
UPS/PTC OUTPUT
CONNECTION
NEUTRAL
CONNECTIONS
OPTIONAL UPS
BYPASS
INPUT CONNECTIONS
UTILITY INPUT,
IF BIB BREAKER
INSTALLED
Figure 1. Typical 30---160kVA MBM with or without Isolation Transformer.
This manual contains installation and operation procedures for the MBM. Before
installation and operation, read through each procedure.
·Chapter 1 provides an overview of this manual and references for further
information.
·Chapter 2 tells you how to prepare your site for the installation of the MBM.
It discusses equipment environmental requirements, inspecting, and unpacking
cabinets.
·Chapter 3 describes how to install the MBM cabinet.
·Chapter 4 contains operating information for the MBM.
·Appendix A contains important information for planning and installing the MBM,
including wiring data and illustrations of cabinets.
Conventions Used in This Manual
This manual contains installation and operation procedures for the Maintenance
Bypass module.
·Bold type highlights important concepts in discussions, key terms in
procedures, and menu options.
·Italic type highlights notes, references to other system manuals, references
to other sections of this manual, and new terms where they are defined.
·Rectangular boxes containing bold type are warnings or cautions that pertain
to the system or its electrical connections. This important information indicates
possible dangers pertaining to personnel safety, equipment damage, critical
load protection, or operational concerns.
For more information on the installation and operation of the UPS system and its
accessories, refer to the following:
164200252Powerware
Each manual describes the UPS cabinet, Control Panel, and
Monitor Panel, and explains the functions of the UPS; discusses
the s tandard features of the UPS and optional accessories;
provides procedures for starting and stopping the UPS, and
information about maintenance and responding to system events.
T h es e a l so de s c r ib e t h e R S --- 4 8 5 a n d RS --- 2 3 2 s e r i a l
communications capabilities of the UPS system; discuss the two
communications ports on the Customer Interface Panel inside the
UPS and how to connect optional remote accessories to your
UPS system; and provide information about enabling, disabling,
and customizing building alarms.
164200253Powerware
164200292Powerware
Each manual contains the following information: how to prepare
the site and plan for installation, detailed step-by-step procedures
for installing each component of your system, how to join
cabinets in a line-up-and-match system, detailed illustrations of
cabinets and optional accessories, including dimensions and
connection points.
9315 30--- 160 kVA UPS Operation
9315 30--- 80 kVA UPS Installation
9315 100--- 160 kVA UPS Installation
Contact the local Powerware Field Service office for information on how to obtain
copies of these manuals.
Getting Help
If you have a question about any of the information in this manual, or if you have a
question this manual does not answer, please call Powerware Field Service:
United States1-800-843-9433
Canada1-800-461-9166
Outside the U.S.Call your local representative
This section describes how to install the Powerware 9315 Maintenance
Bypass Module (MBM). It contains instructions for installing the MBM and
basic site preparation procedures. Figure 2 shows the front and side view of the
MBM with or without transformer for a Powerware 9315 30---160kVA module.
The MBM is shipped as a separate item. Use a forklift or pallet jack to move the
packaged cabinet to the installation site, or as close as possible to the site, before
unloading.
The basic sequence of the installation steps is:
1. Prepare the site for the MBM installation.
2. Inspect, unpack, and unload the MBM.
3. Create an installation plan for wiring the MBM to the UPS system.
4. Prepare for wiring.
5. Complete the installation checklist from the PowerwareR 9315 Installation manual.
6. Have authorized service personnel perform preliminary checks and startup.
NOTE: Startup and operational checks should be performed only by authorized
service personnel. This service is usually offered as part of the sales
contract for your UPS system.
Figure 2. Front and Side View of Typical Maintenance Bypass Module on
Shipping Pallet (30---160kVA with or without XFMR)
For the MBM to o perate at peak efficiency, the installation site should meet the
environmental parameters outlined in the PowerwareÒ 9315 Operation manual
provided with the UPS system. The operating environment must meet the size and
weight requirements supplied in the PowerwareÒ 9315 Installation manual provided
with the UPS system. If the MBM is to be operated at an altitude higher than 1500
meters (5000 feet), contact the local sales or service office for important information
about high altitude operation.
The basic environmental requirements for operation of the MBM are:
Ambient Temperature Range0 --- 4 0 ˚C (32 ---104˚F)
Recommended Operating Range20---25˚C (68--- 77˚F)
Maximum Relative Humidity95%
The MBM uses convection cooling to regulate internal component temperature. Air
inlets are in the front of the cabinet, and outlets are in the top. Clearance in front of
and above each cabinet for proper air circulation is essential.
Creating an Installation Plan
Before beginning to install the MBM, read and understand how this manual applies
to the system being installed. It is important to note that UPS module installation
procedures are contained in the PowerwareÒ 9315 Installation manual provided
with the UPS system. It is recommended to first understand how to install the UPS
modules. The information in Chapter 2 of this manual is a guide for installation of
the MBM to the UPS modules.
Environmental Considerations
Thelifeofthemaintenancebypassmoduleisadverselyaffectediftheinstallation
does not meet the following guidelines:
1. The MBM must be installed on a sealed concrete pad or floor.
2. The MBM must be installed in a dust-free environment.
3. The MBM must be installed in a humidity-controlled environment.
Preparing for Wiring the Maintenance Bypass Module
See Tables A-1 through A-6 in Appendix A of this manual for wiring requirements.
The power wiring for this equipment is rated at 90_C. Ifwireisruninanambient
temperature greater than 30_C, higher temperature rating and/or larger size wire
may be necessary. Wiring should be installed through the bottom or top entry of
the module. For UPS external wiring requirements, including minimum AWG size
of external wiring, see the PowerwareÒ 9315 Installation manual provided with the
UPS system.
NOTE: Material and labor for external wiring are to be provided by designated
Inspecting and Unpacking the Maintenance Bypass Module
The first task in preparing for installation of the MBM is inspecting and unpacking
the unit. The MBM arrives covered with protective packaging material as shown in
Figure 3.
OUTER
PACKAG I N G
LAMINATED PLYWOOD
AND POLYFOAM SKIDS
Figure 3. MBM as Shipped, with Outer Packaging and Pallet
The MBM pallet consists of four metal angle supports secured to plywood /pol y f oam
laminated skids. The skids act as shock absorbers for the MBM during shipment.
WARNING:
Unit is extremely heavy. If unloading instructions are not closely
followed, the unit may tip and cause serious injury.
Turning the jacking bolts unevenly may cause the unit to become
unbalanced. To prevent tipping, raise and lower the jacking bolts
evenly and sequentially. The unit should only be raised approximately
3mm(
1. Remove the doors. Remove the retaining screw located inside each door at
2. Locate the field kit packed inside the unit. Lo cate the four ½-in. jacking bolts
1/8 in.) above the floor (just enough to remove polyfoam skids).
the bottom hinge pivot point, then lift off the door. Save the retaining screws
for reinstallation of the doors.
and install them in the threaded holes in the front and rear supports. Place a
floor protector underneath each jacking bolt, and screw the bolts down until
they contact the floor protectors. The floor protectors prevent the floor from
being damaged by the jacking bolts.
WARNING:
Module may fall. Do not loosen hardware attaching the side or front/rear
shipping supports to the module base. Also, do not loosen the shipping
supports from each other. The module must be lowered using jacking
bolts before the shipping supports can be removed.
3. Loosen, but do not remove the hardware holding the plywood/polyfoam skids
to the front and rear supports (labeled “1” in Figure 4 --- 8 places).
4. Turn each jacking bolt clockwise sequentially, no more than two full turns each,
until the foam cushions clear the floor by approximately 3 mm (
1/8 in.).
5. After the plywood/polyfoam skids clear the floor, remove the hardware
loosened in step 3. Pull the skids out from under the MBM. Discard or recycle
them in a responsible manner.
6. Carefully and evenly lower the MBM by turning each jacking bolt
counterclockwise in sequence no more than two full turns each (maximum)
until the supports contact the floor, and the module is no longer supported by
the jacking bolts.
7. When the module is resting on the floor, remove the jacking bolts. Discard or
When the maintenance bypass module (MBM) has been moved to its installed
location, unpacked, and inspected, it is ready for installation. This section
discusses the typical process of installing the MBM in both the line-up and match
and free-standing situations. The MBM is shown in Figure 5.
Cooling Air Inlets
(Front)
Cable Entry, Top Plan View
(Front)
Cable Entry, Bottom Plan View
Figure 5. Top, Bottom, and Front View of Maintenance Bypass Module
·Dimensions in this manual are in millimeters and (inches).
·Do not tilt the unit more than 10˚ during installation.
·Remove the conduit landing plates to add conduit landing holes as required.
Plate material is 16 gauge steel (0.06 in. thick).
·Terminals are UL and CSA rated at 90˚C. A hex key tool is required to attach
wires to the terminals.
·Details about power wiring are provided in the tables of Appendix A of this
manual.
Figure 6 shows typical power wiring terminations of the UPS module and
Maintenance Bypass Module (30--- 160kVA). Refer to the Powerware 9315
Installation manual provided with the UPS system for location of UPS module
cabinet wiring terminations.
NOTE: Material and labor for external wiring are to be provided by designated
personnel.
BREAKER ANNUNCIATION
RIGHT DOOR
UTILITY INPUT,
IF BIB BREAKER
IS NOT
INSTALLED
REMOVED
FOR
CLARITY
MBP
MIS
BIB1
BIB2
Maintenance Bypass Module
Figure 6. Typical Power Wiring Terminations of UPS Module and
The recommended location, for the Maintenance Bypass Module, is as close to the
installed UPS module as possible. Refer to the tables in Appendix A for wire rating
and sizing information
The MBM is packaged in a module similar to the UPS modules (same height,
width, depth). The MBM is designed as a standard line-up-and-match accessory
for the 30---160 KVA rated modules.
Wiring harness assemblies for connecting the UPS module bypass input and
output to the MBP are provided in separate shipping containers, if applicable. The
wiring harness assemblies are passed through the 3-inch wiring feed-through hole
located at the lower right side of the MBM cabinet, for connecting to the UPS input
and output terminals. Refer to Appendix A for UPS module to MBM wiring terminal
locations.
Line up and match connection (cables sold separately by Powerware)
·From the UPS to the MBM, the power cables are connected by mechanical
pressure lugs.
·From the UPS to the MBM, the control cables are connected to terminal blocks.
Remote connection (cables, lugs, and hardware supplied by others)
·All cables are terminated to MBM mechanical pressure lugs.
LineandLoadWiring
The Maintenance Bypass Module provides a means to manually transfer the Critical
load from the UPS module via the UPS Module Bypass to a Maintenance Bypass
Module as may be necessary for shutting down the UPS Module for maintenance
or testing. The proper operation of the transfer is accomplished without interrupting
the load power.
The UPS Module Bypass AC Input and the Maintenance Bypass AC Input must be
from the same or synchronized AC sources. The UPS Module Bypass Input is
connected through the MBP cabinet via an optional Bypass Input Breaker (BIB), if
installed. The Maintenance Bypass Breaker (MBP) is placed in the secondary of the
stepdown transformer (480:208 VAC or 600:208 VAC) or connected directly to the
Maintenance Bypass source if the Isolation Transformer is not required.
UPS Module AC output connects through the MBM cabinet via isolation breaker
MIS. Critical L oad terminals are located on the load side of breakers MBP and MIS.
The Critical Load may be transferred in a Make-Before-Break transfer sequence
between the UPS Bypass Source and the Maintenance Bypass source after UPS
output has been transferred from the UPS module and UPS bypass operating
mode. The MBP must first be closed to prevent power interruption and MIS opened
to provide UPS isolation from the Critical Load bus. Refer to the Transfer Sequence
placard affixed to the front of the MBM cabinet.
This chapter provides preliminary checks, maintenance operations and a
schematic diagram of the maintenance bypass module.
Preliminary Checks and Startup for UPS Equipped with
Maintenance Bypass Module (MBM)
Installation inspection and startup procedures must be performed only by a
Powerware Corporation authorized service person. The procedure is normally part
of the sales contract for the UPS system.
WARNING:
Attempts to startup the UPS system yourself may damage equipment and/or
your critical load. Such attempts may also invalidate your system warranty.
Maintenance Bypass Module Operation
The MBM is provided for use with the Powerware 9315 (30 ---160kVA) UPS module.
WARNING:
Only persons familiar with the operation of this equipment should transfer loads.
Failure to follow the transfer sequence exactly may cause loss of power to the
critical load or may cause overload protection devices to function.
The following transfer sequence is the recommended procedure for the
step-by-step load transfer from and back to the UPS when required. This
information is provided on a label located on the deadfront panel behind
the right front door of the MBM.
From UPS Bypass to Maintenance Bypass:
1. Confirm BIBs, if installed, are closed.
2. Transfer UPS from Normal to Bypass mode (see UPS Operation manual).
NOTE:For Parallel Redundant systems, transfer both UPS modules to
Bypass mode.
3. Close MBP breaker.
CAUTION:
Failure to close MBP breaker results in loss of power to the critical load.
4. Open MIS breaker.
5. Deenergize UPS before servicing unit (see UPS operation manual).
CAUTION:
For UPS electrical isolation, BIB breaker (if applicable) must be opened.
From Maintenance Bypass to UPS Bypass:
1. Confirm BIBs, if installed, are closed.
2. Transfer UPS from Normal to Bypass mode (see UPS Operation manual).
NOTE:For Parallel Redundant systems, transfer both UPS modules to
Bypass mode.
3. Close MIS breaker.
CAUTION:
Failure to close MIS breaker results in loss of power to the critical load.
4. Open MBP breaker.
5. To place UPS in Normal Mode, see UPS operation manual.
NOTE: While the UPS is in Normal Mode and the MIS breaker is closed, the MBP
breaker always trips OFF. Likewise, while the UPS is in Normal Mode and the
MBP is closed, the MIS breaker always trips OFF.
The following transfer sequence is the recommended procedure for the
step-by-step load transfer from and back to the UPS when required. This
information is provided on a label located on the deadfront panel behind
the right front door of the MBM.
Kirk Key Solenoid Release Unit (SKRU)
The 120 VAC operating power for the Kirk Key Solenoid Release Unit (SKRU) is
derived from the Maintenance Bypass source.
The Kirk Key SKRU is provided to prevent access to the key, which is necessary to
initiate the transfer sequence. The operator must observe the instructions on the
Transfer Sequence nameplate mounted on the MBP Panelboard.
Electrical interlocks inhibit key release until UPS is in the Bypass mode.
MBM Transfer Sequences
From UPS Bypass to Maintenance Bypass:
1. Confirm BIBs, if installed, are closed.
2. Transfer UPS from Normal to Bypass mode (see UPS Operation manual).
NOTE:For Parallel Redundant systems, transfer both UPS modules to
Bypass mode.
3. Depress pushbutton on the solenoid key release unit (SKRU). Turn and
remove key “A”. Key “A” may be removed when UPS system is in Bypass
mode as indicated by illuminated pilot light.
4. Insert key “A” into MBP lock, retract bolt, close MBP breaker. Remove key “B”.
CAUTION:
Failure to close MBP breaker results in loss of power to the critical load.
5. Insert key “B’ into MIS lock, open MIS breaker, extend bolt. Remove key “A”.
6. Insert key “A” into solenoid and turn key to LOCK position.
7. Deenergize UPS before servicing (see UPS Operation manual).
CAUTION:
For UPS electrical isolation, BIB breaker (if applicable) must be opened.
2. Transfer UPS to Bypass mode (see UPS Operation manual).
NOTE:For Parallel Redundant systems, transfer both UPS modules to
Bypass mode.
3. Depress pushbutton on the Solenoid Key Release Unit (SKRU). Turn and
remove key “A”.
4. Insert key “A” into MIS lock, retract bolt, close MIS breaker. Remove key “B”.
CAUTION:
Failure to close MBP breaker results in loss of power to the critical load.
5. Insert key “B” into MBP lock, open MBP breaker, extend bolt. Remove key “A”.
6. Insert key “A” into solenoid and turn key to LOCK position.
7. SeeUPSOperationmanualtoplaceUPSinNormalmode.
WARNING:
Dangerous and potentially lethal voltages are present within the UPS enclosure.
When maintenance or repair activities are to be performed, the UPS and the UPS
Bypass power sources should be deenergized and verified with a meter before
working in the required area.
WARNING:
UPS equipment has power feeds that are derived from two or more power
sources.
Maintenance should be scheduled on a periodic basis, recommended not to
exceed one year. More frequent intervals are recommended if the equipment is
subjected to highly repetitive operations.
CAUTION:
Refer to Section 9 -- Maintaining the UPS System of the Powerware 9315
30--160kVA Operation manual, Powerware part number 164200252, before
beginning maintenance or repairs on the UPS equipment.
WARNING:
Dangerous and life-threatening voltages are present when the UPS is
operating. De-energize all equipment before physically touching potentially
live parts.
Periodic inspections of the maintenance bypass module should be made to
determine if components, wiring, and connections exhibit evidence of overheating.
Particular attention should be given to bolted connections. Maintenance
procedures should specify that the bolted connections be retorqued to values
listed on labels posted on the equipment.
CAUTION:
Overtightening of bolted connections containing compression washers
decreases the washer’s ability to maintain compression during heating and
cooling cycles.
Refer to circuit breaker manufacturer’s application and maintenance literature for
recommended maintenance practices and procedures.
Short Circuits
Short circuits are not considered normal phenomena in UPS applications. Tripping
of protective devices due to low impedance short circuits should be thoroughly
investigated for damage to conductors, insulation, and the protective devices in
accordance with the manufacturer’s recommendations.
Maintenance Bypass Module Diagrams
See Appendix A for onelines and system configuration schematics
Ta b l e C -- 1 . Pow e r Ca b l e Te r m i n a t i o n s
With Optional BIBWithout Optional BIB
Size of
kcmil
kcmil
kcmil
kcmil
kcmil
kcmil
kcmil
kcmil
kcmil
kcmil
kcmil
Tightening
Torqu e
N --- M
( l b --- i n )
31.1 (275)3/8
31.1 (275)3/8
56.5 (500)1/2
31.1 (275)3/8N/AN/AN/A
42.4 (375)5/16N/AN/AN/A100--- 160KVA, 20/20
311 (275)3/8
42.4 (375)5/16
31.1 (275)3/8
56.5 (500)1/2
56.5 (500)1/2
31.1 (275)3/8
Int.
Hex
Size
(In.)
Size of
Presure
Terminal
1 --- # 6 - 3 5 0
kcmil
(Note 3)
2 --- # 6 - 3 5 0
kcmil
(Note 2)
3 --- # 3 / 0 - 4 0 0
kcmil
(Note 3)
1 --- # 6 - 3 5 0
kcmil
3 --- # 3 / 0 - 4 0 0
kcmil
2 --- # 6 - 3 5 0
kcmil
4 --- # 2 - 6 0 0
kcmil
12---#2-500
kcmil
2 --- # 6 - 3 5 0
kcmil
Tightening
31.1 (275)3/8
31.1 (275)3/8
42.4 (375)5/16100---160KVA, 20/20
42.4 (375)5/16
31.1 (275)3/8
56.5 (500)1/2
56.5 (500)1/230 --- 160KVA, all voltages
31.1 (275)3/830 --- 160KVA, all voltages
Torqu e
N --- M
( l b --- i n )
311 (275)3/8
Int.
Hex
Size
(In.)
Powerware 9315
UPS Model in KVA
(see note below)
30---160KVA,
38/38, 48/48, 60/60
30---80KVA, 20/20
30---160KVA,
48/20, 60/20
30---160KVA,
38/38, 48/48, 60/60, 48/20, 60/20
30---80KVA, 20/20
30---160KVA,
38/38, 48/48, 60/60
30---80KVA,
48/20, 60/20, 20/20
100---160KVA,
48/20, 60/20, 20/20
30---160KVA,
38/38, 48/48, 60/60
30---80KVA,
48/20, 60/20, 20/20
100---160KVA,
48/20, 60/20, 20/20
NOTES: Model Number Legend
1. 38/38: 380VAC in--- 380VAC out; 48/48: 480VAC in --- 480VAC out; 60/60: 600VAC in --- 600VAC out
48/20: 480VAC in --- 208VAC out; 60/20: 600VAC in --- 208VAC out; 20/20: 208VAC in --- 208VAC out
2. AC input wiring is connected to input lugs E1 ---E3. Lugs are located on the right side of BIB breaker.
3 .A C i n p u t w i r i n g i s c o n n e c t e d d i r e c t l y to t h e l i n e si d e o f M B P b r e a k e r ( M B P --- 1 , M B P --- 3 , a n d M B P --- 5 ) .
4. AC input wiring is connected to input lugs E1--- E3.
Read and understand the following notes while planning your installation:
1. Refer to national and local electric codes for acceptable external wiring practices.
2. Material and labor for external wiring requirements are to be provided by others.
3. For external wiring requirement, including the minimum AWG size of external wiring, see the appropriate column
in Table A-2 and A-4. The power wiring for this equipment is rated at 90 degrees Celsius.
4. The output of the UPS is not a separately d erived source. Output neutral is not bonded to equipment ground through the main
bonding jumper. Refer to NEC and local codes for proper grounding practices.
5. The maintenance bypass (MBM) source must contain overcurrent protection with the maximum trip setting of 125% of the full
load input current in Table A-2 and A-4.
6. The Bypass three-phase feeds should be symmetrical about ground.
7. Transfer sequence instructions for the MBM are placed on the breaker access panel behind the cabinet doors.
8. Control wiring must be installed in separate conduit from the power wiring.
9. Electronic interlock is a standard part of the maintenance bypass module cabinet. This electronic interlock can be replaced with
an optional (extra cost) mechanical interlock if required.
10. Refer to UPS Installation Manual for proper Bypass terminating lugs at UPS cabinet or input transformer cabinet.
11. Refer to Table C-2 for control wiring connections.
12. A Maintenance Bypass neutral feeder must be supplied when the MBM output neutral is used. If no Maintenance Bypass
neutral is supplied, the MBM output neutral is not to be used. In neither case shall the MBM output neutral be bonded to ground.
Read and understand the following notes while planning your installation:
1.Refer to national and local electric codes for acceptable external wiring practices.
2.Material and labor for external wiring requirements are to be provided by others.
3.For external wiring requirement, including the minimum AWG size of external wiring, see the appropriate column in Table A ---3.
The power wiring for this equipment is rated at 90 degrees Celsius.
4.The output of the UPS is not a separately derived source. Output neutral is not bonded to equipment ground through the main
bonding jumper. Refer to NEC and local codes for proper grounding practices.
5.The maintenance bypass (MBM) source must contain overcurrent protection with the maximum trip setting of 125% of the full
load input current in Table A --- 3.
6.The Bypass three-phase feeds should be symmetrical about ground.
7.Transfer sequence instructions for the MBM are placed on the breaker access panel behind the cabinet doors.
8.Control wiring must be installed in separate conduit from the power wiring.
9.Electronic interlock is a standard part of the maintenance bypass module cabinet. This electronic interlock can be replaced with
an optional (extra cost) mechanical interlock if required.
10. Refer to UPS Installation Manual for proper bypass terminating lugs at UPS cabinet or at input transformer cabinet.
11. Refer to Table C-2 for control wiring connections.
Read and understand the following notes while planning your installation:
1.Refer to national and local electric codes for acceptable external wiring practices.
2.Material and labor for external wiring requirements are to be provided by others.
3.For external wiring requirement, including the minimum AWG size of external wiring, see the appropriate column in Table A ---2
and A--- 4. The power wiring for this equipment is rated at 90 degrees Celsius.
4.The output of the UPS is not a separately derived source. Output neutral is not bonded to equipment ground through the main
bonding jumper. Refer to NEC and local codes for proper grounding practices.
5.The maintenance bypass (MBM) source must contain overcurrent protection with the maximum trip setting of 125% of the full
l o a d i n p u t c u r r e n t i n Ta b l e A --- 2 a n d A --- 4 .
6.The Bypass three-phase feeds should be symmetrical about ground.
7.Transfer sequence instructions for the MBM are placed on the breaker access panel behind the cabinet doors.
8.Control wiring must be installed in separate conduit from the power wiring.
9.Electronic interlock is a standard part of the maintenance bypass module cabinet. This electronic interlock can be replaced with
an optional (extra cost) mechanical interlock if required.
10. Refer to UPS Installation Manual for proper Bypass terminating lugs at UPS cabinet or input transformer cabinet.
11. Refer to Table C ---3 for control wiring connections.
12. Refer to Parallel Redundant System Manual for details.
13. A Maintenance Bypass neutral feeder must be supplied when the MBM output neutral is used. If no Maintenance Bypass
neutral is supplied, the MBM output neutral is not to be used. In neither case shall the MBM output neutral be bonded to ground.
Read and understand the following notes while planning your installation:
1. Refer to national and local electric codes for acceptable external wiring practices.
2. Material and labor for external wiring requirements are to be provided by others.
3. For external wiring requirement, including the minimum AWG size of external wiring, see the appropriate column in Table A ---1.
The power wiring for this equipment is rated at 90 degrees Celsius.
4. The output of the UPS is a separately derived source. Output neutral is bonded to equipment ground through the main
bonding jumper. Refer to NEC and local codes for proper grounding practices.
5. The maintenance bypass (MBM) source must contain overcurrent protection with the maximum trip setting of 125% of the full
load input current in Table A --- 1.
6 The Bypass three-phase feeds should be symmetrical about ground.
7. Transfer sequence instructions for the MBM are placed on the breaker access panel behind the cabinet doors.
8. Control wiring must be installed in separate conduit from the power wiring.
9. Electronic interlock is a standard part of the maintenance bypass module cabinet. This electronic interlock can be replaced with
an optional (extra cost) mechanical interlock if required.
10. Refer to UPS Installation Manual for proper Bypass terminating lugs.
11. Refer to Table C ---3 for control wiring connections.
12. Refer to Parallel Redundant System Manual for details.
Read and understand the following notes while planning your installation:
1.Refer to national and local electric codes for acceptable external wiring practices.
2.Material and labor for external wiring requirements are to be provided by others.
3.For external wiring requirement, including the minimum AWG size of external wiring, see the appropriate column in Table A ---3.
The power wiring for this equipment is rated at 90 degrees Celsius.
4.The output of the UPS is not a separately derived source. Output neutral is not bonded to equipment ground through the main
bonding jumper. Refer to NEC and local codes for proper grounding practices.
5.The maintenance bypass (MBM) source must contain overcurrent protection with the maximum trip setting of 125% of the full
load input current in Table A --- 3.
6.The Bypass three-phase feeds should be symmetrical about ground.
7.Transfer sequence instructions for the MBM are placed on the breaker access panel behind the cabinet doors.
8.Control wiring must be installed in separate conduit from the power wiring.
9.Electronic interlock is a standard part of the maintenance bypass module cabinet. This electronic interlock can be replaced with
an optional (extra cost) mechanical interlock if required.
10. Refer to UPS Installation Manual for proper Bypass terminating lugs at UPS cabinet or at input transformer cabinet.
11. Refer to Table C ---3 for control wiring connections.
12. Refer to Parallel Redundant System Manual for details.
1Line up and match power and control interconnection wiring from
MBM to UPS/Input Transformer cabinet is applicable for Reverse
Transfer (Single UPS module) connection only and sold separately
by Powerware Corporation.
2Run power cables underneath the transformer.
3External wiring is requiredandsuppliedbyothers.
4The PDM cabinet is applicable IF AND ONLY IF the MBM and UPS
module outputs are 3 phase, 60Hz, 280VAC.
5Refer to Powerware 9315 UPS module installation manual for