Installation
Symmetra® MW
1000 kW
480 V
~~
Contents
Safety ......................................................................1
IMPORTANT SAFETY INSTRUCTIONS
- SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Symbols used in this guide . . . . . . . . . . . . . . . . . . . . . . . . . 1
Installation safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
System Overview......................................................3
UPS Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inverter Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Control Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Input/Output Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Configuration 1 (Inverter Section placed to the left) . . . . . . . . 4
Configuration 2 (Inverter Section placed to the right) . . . . . . . 5
External Bypass Static Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Installation ................................................7
Typical UPS Wiring Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power wiring overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
External disconnection switches . . . . . . . . . . . . . . . . . . . . . 8
Input/Output wiring precautions . . . . . . . . . . . . . . . . . . . . . 8
Top Cable Entry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Preparing for top cable entry (default) . . . . . . . . . . . . . . . . . 9
Battery cable connections (top cable entry) . . . . . . . . . . . . . 10
Ground and AC cable connections (top cable entry) . . . . . . . 12
Symmetra MW 1000 kW 480 V Installation - 990-4112E i
Bottom Cable Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Preparing for bottom cable entry . . . . . . . . . . . . . . . . . . . . 13
Battery cable connections (bottom cable entry) . . . . . . . . . . 15
Ground and AC cable connections (bottom cable entry) . . . . 17
Bypass Static Switch Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Top cable entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Bottom cable entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Communication cable overview . . . . . . . . . . . . . . . . . . . . . . . . 21
Relay Board (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Location of optional Relay Board . . . . . . . . . . . . . . . . . . . . 22
Communication cables with optional Relay Board . . . . . . . . 23
Relay Board functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Specifications ........................................................ 27
Low-Impedance/High-Impedance Grounding . . . . . . . . . . . . . . 27
Low-impedance grounding . . . . . . . . . . . . . . . . . . . . . . . . 27
High-impedance grounding . . . . . . . . . . . . . . . . . . . . . . . 27
Electrical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Installation Planning Data . . . . . . . . . . . . . . . . . . . . . . . . 29
AC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
DC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
AC Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
AC Input External Bypass SSW . . . . . . . . . . . . . . . . . . . . . 31
Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 2 - Table 310-16 (National Electrical Code) . . . . . . . . . 32
Recommended cable, bolt, and lug sizes . . . . . . . . . . . . . . . 34
Torque specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Required Breaker Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Input and upstream breakers — minimum settings . . . . . . . . 35
Output and downstream breakers — minimum settings . . . . 35
General Specifications 480 V . . . . . . . . . . . . . . . . . . . . . . . . . . 37
ii Symmetra MW 1000 kW 480 V Installation - 990-4112E
Safety
IMPORTANT SAFETY INSTRUCTIONS
- SAVE THESE INSTRUCTIONS
This guide contains important instructions for SYMF1000KG that should be followed when handling
the UPS, External Bypass Static Switch, Battery Enclosures, and Batteries.
Symbols used in this guide
WARNING!
Indicates an electrical hazard, which, if not avoided, could result in injury or death.
CAUTION!
Indicates a hazard, which, if not avoided, could result in injury or death.
Note
See also
Indicates important information.
Indicates that more information is available on this subject in a different section of this
manual.
Indicates that more information is available on the same subject in a different manual.
Main Protective Earthing Terminal symbol.
Ground symbol.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 1
Safety: IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS
Installation safety
EPO
Press the EPO (Emergency Power Off) button to switch off all AC and DC power
supply to connected equipment in the room. The EPO is typically located on a wall in
the room in which the UPS is installed. See “Communication cable overview” section
for information on how to wire the UPS to the EPO.
WARNING!
Before starting installation, check and test that all AC and DC power source
breakers are in open position.
WARNING!
Only personnel trained in the construction and operation of the equipment, and the
electrical and mechanical hazards involved, may install or remove system
components.
CAUTION!
Do not use High Voltage Testing Equipment. This equipement will destroy the
electronic circuits in the unit.
CAUTION!
The system is equipped with an optional auto-start function, enabling the system to start
without any warning when power is applied.
Note
CAUTION!
All wiring must be in accordance with applicable national and/or local electrical codes.
This unit contains components that are sensitive to electrostatic discharge (ESD).
Follow proper ESD procedures to avoid severe damage to electronic components.
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 Installation
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 his own expense.
2 Symmetra MW 1000 kW 480 V Installation - 990-4112E
System Overview
UPS Sections
The UPS system consists of an 1000 kW Inverter Section, a Control Section, an Input/Output Section
and an External Bypass Static Switch Section.
Serial number
The serial number is stated on the type label behind the finishing panel above the display unit.
Remove finishing panel to see serial number.
Inverter Section
The Inverter Section regulates the UPS output and operates from battery power in the event of utility
input loss.
Control Section
The Control Section controls and monitors the UPS and the Main Static Switch (incorporated in the
Control Section).
Input/Output Section
The Input/Output Section provides electrical connection of input and output.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 3
Configurations
The UPS system can be configured in two ways. The Inverter Section can be placed either to the left
or to the right of the Control Section. The two configurations are shown below.
Configuration 1 (Inverter Section placed to the left)
~~
2032 mm/80 in
Width:
2112 mm/83.15 in
Total width of UPS sections:
4138 mm/163 in
Weight:
Without Power Modules: 4197 kg/9233 lb
With Power Modules: 5049 kg/11108 lb
Control Section Input/Output SectionInverter Section
Width:
1012 mm/39.84 in
Width:
1014 mm/39.92 in
1
i
n
2
4
/
m
m
7
6
0
4 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Configuration 2 (Inverter Section placed to the right)
System Overview: Configurations
2032 mm/80 in
n
i
2
4
/
m
m
7
6
0
1
Input/Output Section
Width:
1014 mm/39.92 in
Control Section
Width:
1012 mm/39.84 in
Total width of UPS sections:
4138 mm/163 in
Weight:
Without Power Modules: 4197 kg/9233 lb
With Power Modules: 5049 kg/11108 lb
Inverter Section
Width:
2112 mm/83.15 in
Symmetra MW 1000 kW 480 V Installation - 990-4112E 5
External Bypass Static Switch
The External Bypass Static Switch (External Bypass SSW) transfers the load (manually or
automatically) from the UPS to an alternate source without interrupting the power to the load.
~~
2032 mm/80 in
1067 mm/42 in
External Bypass Static Switch
Width:
1014 mm/39.82 in
Weight:
460 kg/1012 lb
Serial number
The serial number is stated on the type label behind the finishing panel above the display unit.
Remove finishing panel to see serial number.
6 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Electrical Installation
Typical UPS Wiring Principle
Power wiring overview
See separate guide on parallel operation for wiring overview in parallel systems.
See also
AC Mains
Input Lugs
Q1 Q5
480 V, 3PH, 3W & GND
2
Battery 1
Battery
Breakers
Battery 2
UPS SSW
7
5
Q7 Q8
External
Battery
2
2
2
Q2 Q3
LBB
4
KK
1.
SOURCE AND AC CABLIN G MUST BE 480 VOLT, WYE CON NECTED, 3 PHASE,
3 WIRE + GRO UND (C ONTACT APC IF OTHE R).
DASHED LINES BETWEEN UNITS ( — — — ) REPRESENT AC/DC CABLING PROVIDED BY OTHERS.
2.
3.
ALL AC CIRCUIT BREAKERS ARE 100% CONTINUOUS DUTY RATED
WITH 24 VOLT DC SHUNT TRIPS AND 2A/2B AUXILIARY CONTACTS.
4.
OPTIONAL COMPONENTS
5.
SEPARATE CO NDUITS. TWO WIRE + GROUND
6.
UPS INPUT AND OUTPUT CONDUCTORS MUST BE IN SEPARATE AMPERE RATINGS.
UPS AND STATIC BYPASS WITHSTAND 200,000 SYMMET RICAL AMPERES.
7.
8.
INSTALLATION MUST COMPLY WITH ALL APPLICABLE NATIONAL AND LOCAL CODES.
480 V, 3PH, 3W & GND
4
7
2
Q6
2
2
4
KK
Q4
Output Load Lugs
KK
4
Symmetra MW 1000 kW 480 V Installation - 990-4112E 7
Electrical Installation: Typical UPS Wiring Principle
External disconnection switches
WARNING!
The UPS has no internal manual disconnect devices to switch off external AC (Q1
and Q5) and DC (Q7 and Q8) input power. Ensure that disconnection devices are
available as separate components for this installation.
The installer must provide each external disconnection device for this UPS system with
labels displaying the following text:
“Isolate the Uninterruptible Power Supply (UPS) as instructed in the User Guide before
Note
working on circuit.”
Input/Output wiring precautions
WARNING!
Only personnel trained in the construction and operation of the equipment, and the
electrical and mechanical hazards involved, may install or remove system
components.
Note
Note
WARNING!
Supply the UPS from a dedicated, grounded, 3-wire Wye service.
CAUTION!
All wiring must be in accordance with applicable national and/or local electrical codes.
Use only UL-approved cable lugs.
Use only UL-approved cables. Use only stranded copper conductors. Refer to National
Electric Code for wiring and protection. Refer to bolt and lug table in the
“Specifications” section.
8 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Top Cable Entry
Preparing for top cable entry (default)
Cable entry in top cover of Input/Output Section.
AC IN cable
entry
Top view
Battery
cable
entry
Battery
cable
entry
AC OUT
cable entry
M6 Bolt
1.75 in /
44.45 mm
2.3 in / 58 mm
IN/OUT power cable (top entry)
1.75 in /
44.45 mm
BAT 1 BAT 2
Top view
AC IN AC OUT
L3 IN
90
L2 IN
91 94
L1 IN
92 93
95
L3 OUT
L2 OUT
L1 OUT
L1 IN
L2 IN
L3 IN
92 93
91 94
90
L1 OUT
L2 OUT
L3 OUT
95
Loosen the 8 bolts in cable entry covers. Drill holes for conduits in areas shown. Re-fit the
covers and install the conduits.
Install cable lugs on busbars. Use M12 bolts.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 9
Electrical Installation: Top Cable Entry
Battery cable connections (top cable entry)
WARNING!
Make sure that the battery breakers are open (OFF) prior to running the cables.
CAUTION!
Refer to the battery manufacturer’s installation manual.
CAUTION!
The minimum DC voltage rating of the battery supply over-current protective device is
500 V.
Over-current protection for the battery circuit is required by code.
Note
Note
BAT 1 and BAT 2 cables MUST be run in separate conduits.
10 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Top view of Input/Output Section
Electrical Installation: Top Cable Entry
Battery
cable
entry
AC IN cable
entry
Battery
cable
entry
AC OUT
cable entry
IN/OUT power cable (top entry)
Battery 1
(BAT 1 +/-)
BAT 1- BAT 2+
Battery 2
(BAT 2 +/-)
1.75 in /
44.45 mm
2.3 in / 58 mm
BAT 1-
1.75 in /
44.45 mm
BAT 2+
L1 In
L2 In
L3 In
BAT 1+
L1 Out
L2 Out
L3 Out
BAT 2-
Front view of Input/Output Section
Feed the battery cables through the top of Input/Output Section.
Connect cables from battery system as illustrated.
Connect cables from battery system as illustrated.
BAT 1+
BAT 2-
Symmetra MW 1000 kW 480 V Installation - 990-4112E 11
Electrical Installation: Top Cable Entry
Ground and AC cable connections (top cable entry)
Equipment grounding
cables for Battery 2
and AC Out
Grounding electrode
conductors (red) for
Battery 1 & AC IN
Midpoint bonding jumper
1.75 in /
44.45 mm
Output circuit
grounding bar
1.75 in /
44.45 mm
2.3 in / 58 mm
Feed the AC and ground cables through the top of Input/Output Section as illustrated.
Connect the cables as illustrated.
12 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Bottom Cable Entry
Preparing for bottom cable entry
Cable entry in bottom cover of Input/Output Section
Top view
M6 Bolt
Battery
cable
entry
AC IN
cable entry
Battery
cable
entry
AC OUT
cable entry
1.75 in /
44.45 mm
2.3 in / 58 mm
1.75 in /
44.45 mm
Top view
Front view
BAT 1 BAT 2
M14
M14
M14
M10
AC OUT
L3 OUT
95
L2 OUT
L1 OUT
93
M10
M10
M10
AC IN
L3 IN
90
L2 IN
92
L1 IN
M14
M10
M10
M10
BAT 1 BAT 2
Top v ie w
AC IN AC OUT
L3 IN
90
L2 IN
92
L1 IN
95
93
L3 OUT
L2 OUT
L1 OUT
Symmetra MW 1000 kW 480 V Installation - 990-4112E 13
L1 IN
L2 IN
L3 IN
90 95
91 94
IN/OUT power cable (bottom entry).
L1 OUT
L2 OUT
9392
L3 OUT
Electrical Installation: Bottom Cable Entry
Preparation for bottom cable entry
a. Loosen bolts of both cable entry covers and remove.
b. Drill holes for conduits for AC, Battery, and Output circuit grounding electrode cable in areas
shown.
c. Install conduits.
d. Remount covers.
Interchange of AC IN busbars for bottom entry
a. Remove nuts from M14 bolts at busbars 90 and 92.
b. Remove bolt, washer and fuse.
c. Remove bolts from M10 at busbars 90 and 92.
d. Remove busbars 90 and 92 at AC IN.
e. Move the two front insulators in the topmost busbar position two stud positions to the front.
f. Move the two front insulators in the lowest busbar position two stud positions to the rear.
g. Install busbar 90 in original position of busbar 92.
h. Install busbar 92 in original position of busbar 90.
i. Reattach bolts at busbars 90 and 92.
j. Install cable lugs on busbars using M12 bolts.
Interchange of AC OUT busbars for bottom entry
a. Remove nuts from M14 bolts at busbars 93 and 95.
b. Remove bolt, washer and fuse.
c. Remove bolts from M10 at busbars 93 and 95.
d. Remove busbars 93 and 95 at AC OUT.
e. Move the two front insulators in the topmost busbar position two stud positions to the front.
f. Move the two front insulators in the lowest busbar position two stud positions to the rear.
g. Install busbar 93 in original position of busbar 95.
h. Install busbar 95 in original position of busbar 93.
i. Reattach bolts at busbars 93 and 95.
j. Install cable lugs on busbars using M12 bolts.
Moving busbar for grounding
a. Move busbar for grounding from upper right corner to lower left corner as illustrated.
14 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Battery cable connections (bottom cable entry)
WARNING!
Make sure that the battery breakers are open (OFF) prior to running the cables.
CAUTION!
Refer to the battery manufacturer’s installation manual.
CAUTION!
The minimum DC voltage rating of the battery supply over-current protective device is
500 V.
Over-current protection for the battery circuit is required by code.
Note
Electrical Installation: Bottom Cable Entry
Note
BAT 1 and BAT 2 cables MUST be run in separate conduits.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 15
Electrical Installation: Bottom Cable Entry
Top view of Input/Output Section
Battery
cable
entry
AC IN cable
entry
Battery
cable
entry
AC OUT
cable entry
Front view of Input/Output Section
BAT 1- BAT 2+
L1 In
L2 In
L1 Out
L2 Out
1.75 in /
44.45 mm
2.3 in / 58 mm
BAT 2+
BAT 1-
1.75 in /
44.45 mm
L3 In
BAT 1+
Battery 1
BAT 1 +/-)
BAT 2-
Battery 2
(BAT 2 +/-)
L3 Out
IN/OUT power cable (bottom entry)
Feed the battery cables through the bottom of Input/Output Section.
Connect cables from battery system as illustrated.
Connect cables from battery system as illustrated.
BAT 1+
BAT 2-
16 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Electrical Installation: Bottom Cable Entry
Ground and AC cable connections (bottom cable entry)
Midpoint bonding jumper
Equipment grounding cables
for Battery 1 & AC IN
Output circuit
grounding bar
Equipment grounding cables
for Battery 2 & AC OUT
Equipment grounding bar
Battery 2
Battery 1
1.75 in /
44.45 mm
2.3 in / 58 mm
Feed the AC and ground cables through the bottom of Input/Output Section as illustrated.
Connect cables as illustrated.
1.75 in /
44.45 mm
Symmetra MW 1000 kW 480 V Installation - 990-4112E 17
Bypass Static Switch Wiring
WARNING!
Use only manual reset protection as input over-current protection.
WARNING!
Over-current protection required by code.
WARNING!
The UPS has no internal manual disconnect devices to switch off external AC (Q1
and Q5) and DC (Q7 and Q8) input power. Ensure that disconnection devices are
available as separate components for this installation.
CAUTION!
The External Bypass Static Switch is not provided with built-in backfeed protection.
The breaker is controlled from the External Bypass SSW and will be tripped in case of
backfeed.
Note
Note
Note
The installer must provide each external disconnection device for this UPS system with
labels displaying the following text:
“Isolate the Uninterruptible Power Supply (UPS) as instructed in the User Guide before
working on circuit.”
The installation of the External Bypass Static Switch must comply with local and
national codes.
Run matched set of phase cables in the same cable run(s).
Do not separate phases into different cable runs.
For information on cable lugs, cable ratings, over-current protection and the
disconnection switches, refer to “Specifications” .
Top cable entry
Electrical Installation: Bypass Static Switch Wiring
Top view of top cable entry
Port for communication cables
PE
X017
X012
X008A
X014B
X013
X014A
X008B
X011
X010
X405
X007
X021
X022
L1 IN
L1 OUT
L2 IN
L2 OUT
UPS Summary
L3 IN
~~
L3 OUT
Normal
Normal
Top view of AC IN & OUT cable
connections
L1 OUT
L2 IN
L2 OUT
L1 IN
L3 IN
L3 OUT
1.75 in /
44.45 mm
1.75 in /
44.45 mm
2.3 in / 58 mm
Loosen the 8 bolts to remove top cover.
No drilling or cutting should take place over the top of the UPS.
Note
Drill holes for conduits. Re-fit the covers. Install the conduits.
Feed cables through conduits. Connect cables at cable connection points as illustrated.
Connect grounding electrode conductor to busbar locations as shown.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 19
Electrical Installation: Bypass Static Switch Wiring
Bottom cable entry
Top view of bottom cable entry
Communication cable Port
PE
X017
X012
X008A
X014B
X013
X014A
X008B
X011
X010
X405
X007
X021
X022
L1 IN
L2 IN
L1 OUT
L2 OUT
UPS Summary
L3 IN
~~
L3 OUT
Top view of AC IN & OUT
bottom cable connections
Normal
Normal
L1 IN
L1 OUT
L2 IN
L2 OUT
L3 IN
L3 OUT
1.75 in /
44.45 mm
1.75 in /
44.45 mm
2.3 in / 58 mm
Loosen the 8 bolts to remove bottom cover.
No drilling or cutting should take place inside the UPS.
Note
Drill holes for conduits. Re-fit the covers. Install the conduits.
Feed cables through conduits. Connect cables at cable connection points as illustrated.
Connect grounding electrode conductor to busbar locations as shown.
20 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Communication cable overview
External Bypass Static Switch
e
n
a
l
p
7
5
n
9
o
i
t
0
c
P
e
0
n
n
o
C
B
B
7
6
2
2
1
1
X
X
X126A
X127A
UPS
X134A
EPO out
X177
0P0957
Connection plane
X131
B
X133A
B
7
6
2
2
1
1
X
X
A
6
2
1
X
X130
X128
A
7
X129
2
1
Backfeed protection
X
EPO out
X185
21
X134A
X177
1
2
2
1
2
1
X131
X130
X128
X129
Te r m i n a t o r
0N-0765
X134A
7
X177
P
B
M
X128
X177
X128
X129
s
r
e
3
P
k
7
B
a
1
e
M
X
r
B
2
1
s
r
e
k
a
e
r
B
X129
1
1
2
X134B
4
5
3
+-+-+ -+-
H4
H3
21
5
43
MBP CAN I/ O board 1
Norm.op
X175
1
2
1
2
Q
6
Q
5
play)
EMO (Dis
1
2
1
2
Externa l
EPO
12
placed on
wall
EMO (Display)
Q
4
Q
3
2
Q
1
Q
Terminator
0N-0765
612345
871091211
X134B
X134A
1
2
1
2
1
2
1
2
12
11
10
9
8
6 5
4
3 2
1
X173
2
Relay output
Note 3
Maintenance Bypass Panel
Relay output
1
2
X175
Norm.op
MBP CAN I/O board 2
0P4533
142
X170
Note 3
Lamps
X172
10
8
6
9
7
6
Lamps
Q7
11
H6
H5
109
X172
0P4533
Maintenance Bypass Panel
Q8
+-+-
12 34
X182
4
2 3
X180
Battery CAN I/O board
1
X185
12
X133A
X133B
0P4512
2
1
3
12
+- +-+-
Q5
121187
1
X170
Earth fault sens or
X174
2
1
H7
H8
123
X183
ID 0
X186
78
1
2
X174
Eart h fault sens or
X176
3412
+
External La mp
supply V r V
DC DC
Max. 250V 5A
-
4
2
3
X178
X176
4
4
31
2
X184
42
31
X181
4
3
8
7
1
2
X
1
56
24V
Shunt trip for
Q6
back feed
protection
o
AC
Note 1
-
4
3
+
-
21
+
6
-
5
+
4
-
3
+
2
-
1
+
Shunt trip
Note 2
-
+
-
+
Tem p s ens or
-
+
Tem p s ens or
-
+
Note 1
-
C2
+
-
C1
+
DC
C2
C1
Q2
Q1
24V
DC
UVR
Q8
UVR
Q7
NTC
NTC
Note 1: Contact APC Application Team for correct
sizing.
Note 2: H7, H8 = 5V LED
Note 3: Q2, Q4 and Q6 are optional. If Q2 is not
present pins 3 and 4 must be shorted on both boards. If
Q4 is not present pins 7 and 8 must be shorted on both
boards. If Q6 is not present pins 11 and 12 must be
shorted on both boards.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 21
Fuse1
Fuse234Fuse356Fuse4
Relay Board (Optional)
Location of optional Relay Board
123123
123123123123123123
NC 3
22 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Communication cables with optional Relay Board
Electrical Installation: Relay Board (Optional)
External Lamp
supply V or V
DCDCAC
Max. 250V 5A
AC
24V
Shunt trip
Symmetra MW 1000 kW 480 V Installation - 990-4112E 23
Electrical Installation: Relay Board (Optional)
Relay Board functions
The Relay Board informs the user of the operation mode, status, and alarm conditionsand has 8 ports
on the input side and 16 output terminals.
Use Normally Closed (NC) contacts for Fail safe Mode and Normally Open (NO) for
Active on.
Note
Relay
ID
K1 Common Alarm • Any of the functions below, except relays
K2 Battery voltage out of
K3 Mains out of tolerance • Mains voltage RMS value is out of
K4 Bypass out of tolerance • Bypass voltage RMS value is out of
Name Events that will trigger the alarm Mode Comment
K8, K9, K10, K11;
• Inverter section fault;
• Main PSU fault;
• System locked in operation mode;
• Internal memory fault;
• Internal communication fault.
• DC voltage is too high (shut down);
tolerance
• DC voltage is under warning level;
• DC voltage is low (shut down).
tolerance;
• Mains waveform not accepted (fast
detector);
• Mains frequency is out of tolerance.
tolerance;
• Bypass waveform not accepted (fast
detector);
• Bypass frequency is out of tolerance.
Fail safe Warning
Fail safe Warning
Fail safe Warning
Fail safe Warning
K5 Battery condition fault • Battery monitor has detected a weak
battery;
• Battery monitor has detected a defective
battery.
K6 Battery disconnected • Battery breaker tripped/open. Fail safe Fault
K7 System overload • Output load exceeded 100%;
• Delta Inverter current limiter is active;
• Main Inverter current limiter is active.
K8 Output out of tolerance • Output voltage RMS value is out of
tolerance;
• Output waveform not accepted (fast
detector);
• Output frequency is out of tolerance.
K9 Normal operation • UPS is running in normal operation. Active on Opr. mode
K10 Battery operation • UPS is running in battery operation. Active on Opr. mode
24 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Fail safe Fault
Fail safe Fault
Fail safe Fault
Electrical Installation: Relay Board (Optional)
Relay
ID
K11 Bypass operation • UPS is running in normal operation/
K12 Maintenance bypass ON • The maintenance bypass switch is active. Active on Opr. mode
K13 Stand-by operation • UPS is in stand-by operation. Active on Opr. mode
K14 Boost charge operation • UPS is boost charging the batteries. Active on Opr. mode
K15 Fan fault • Blocked or faulty fan. Fail safe Fault
K16 High equipment
IN1 Generator active • System on generator System is
Name Events that will trigger the alarm Mode Comment
Active on Opr. mode
bypass operation according to AS400/
Novell.
Fail safe Warning
running on
generator.
Battery
charging is
derated.
temperature or inverter
fuse blown
• Static Switch temperature is high;
• Main Inverter failure (high temperature
or blown fuse);
• Delta Inverter temperature is high;
• Magnetics temperature is high;
• Isolation Transformer temperature is high
(optional);
• Battery temperature is high.
IN2 Battery room ventilation
fault
IN3 IN8
Reserved for future use
• Battery room ventilation Ventilation
fault in
battery
room.
Battery
charging is
off.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 25
Specifications
Low-Impedance/High-Impedance Grounding
The Symmetra
or a high-impedance grounded system. In a low-impedance grounded system (most common), the
power source (utility, generator, or UPS) is solidly grounded. In the event of a down-stream ground
fault, the fault current will have a path back to the source, and the over-current device feeding the
faulted part of the installation will trip and isolate the fault.
In a high-impedance grounded system, the source is grounded with an impedance (grounding
resistor). In the event of a down-stream fault, the fault current will be limited by the impedance of the
grounding resistor. The value of a high-impedance system is its ability to maintain operation with a
given system fault to ground, i.e. the over-current device will only trip at line-to-line faults or double
ground faults. For a high-impedance system to provide enhanced power system reliability and
availability, a ground-fault monitoring/alarm system is required.
®
MW is easily integrated into either a low-impedance (solidly) grounded Wye system,
Low-impedance grounding
For low-impedance grounding, verify the presence of the copper midpoint bonding jumper.
For location of the jumper, see “Ground and AC cable connection” in Installation
Guide.
Connect the output circuit grounding electrode conductor to a grounding electrode in accordance
with NEC 1999, article 250-26.
Grounding electrode conductor to be supplied by the customer.
Note
High-impedance grounding
For high-impedance grounding, remove the pre-installed copper midpoint bonding jumper.
For location of the jumper, see “Ground and AC cable connection” in Installation
Guide.
Install ground-fault detection circuit in accordance with NEC 1999, article 250-36.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 27
Specifications: Low-Impedance/High-Impedance Grounding
For high-impedance grounding, the installation must include ground-fault detection
circuitry.
Note
From an external grounding resistor, and through a separate conduit, connect a cable to the output
circuit grounding bar.
28 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Electrical Specification
Installation Planning Data
Maintenance Bypass Panel
Q3
Service (480V 3-phase,
3- wire grounded Wye)
The installation is a typical installation including ancillary equipment, which is available
from APC.
Note
UPS and External Bypass Static Switch feed must be generated from synchronized
sources.
Note
Q5
Q1
External Bypass SSW
UPS
Battery
Breaker 1
Q7 Q8
Optional
Optional
Battery
Breaker 2
Q6
Q2
Q4
Optional
Output (480V 3-phase,
3-wire only)
WARNING!
Supply the UPS from a dedicated, grounded 3-wire Wye service.
WARNING!
The UPS has no internal manual disconnect devices to switch off external AC (Q1
and Q5) and DC (Q7 and Q8) input power. Ensure that disconnection devices are
available as separate components for this installation.
CAUTION!
Ensure clockwise phase rotation (L1, L2, L3) of input voltages.
Symmetra MW 1000 kW 480 V Installation - 990-4112E 29
Specifications: Electrical Specification
CAUTION!
AC and DC disconnect switches and over-current protection must be included in the
installation.
All wiring must comply with all applicable national and/or local electrical codes.
Note
Max. prospective RMS short-circuit current on input terminals: 200 kA
Max. prospective RMS short-circuit current on battery terminals: 50 kA
Note
AC Input
AC Input
AC Input
Input Rating 1000 kW/kVA
Power Factor 1
Input Voltage 480 V
Input Frequency 60 Hz
Nominal Input Current (note 1) 1240 A
Maximum Input Current (note 2) 1364 A
Input Current Limitation (note 3) 1564 A
Recommended Cable per phase (notes 4, 6, 7, a, b, c) 5 × 500 kcmil
DC Input
DC Input
Nominal Voltage (note 5) 2 x 384 V
I
Discharge (note 8) 1356 A
Nom
I
Discharge (note 9) 1595 A
Max
Recommended cable (per pole) 5 × 500 kcmil
CAUTION!
The minimum DC voltage rating of the battery supply over-current protective device is
500 V.
30 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Specifications: Electrical Specification
AC Output
AC Output
Voltage 480 V
Current Nom 1203 A
Max (note 11) 1504 A
Recommended cable (per phase) 5 × 500 kcmil
AC Input External Bypass SSW
The External Bypass SSW is designed to accommodate a continuous overload of 25%.
AC Input External Bypass SSW
External Bypass SSW Max Input Current (100% load) 1203 A
Heat Dissipation
105.5 kBTU/hr (note 10)
Notes
1. Nominal (Nom): Input current based on rated load.
2. Maximum (Max): Input current based on full battery recharge + nominal input voltage + rated
load.
3. Current limitation (A) through electronic current limiting is based on full battery recharge +
nominal load and -15% input voltage (see “Required Breaker Settings” ).
4. Input, Output and Battery1 and Battery2 circuit cables shall be run in separate conduits or
raceways. Cables shall be rated at 600 V as a minimum.
5. Nominal battery voltage at 2.0 volts/cell.
6. Recommendation: All cables shall be sized in accordance with 2002 NEC 210-19 FPN No. 4
branch feeder voltage drop of 3%. Voltage drop not considered in above chart. Application-
specific Input Cable Ampacity may vary from above chart.
7. Equipment Grounding Conductors shall be sized in accordance with Table 250-122 of the 2002
NEC and shall be installed in accordance with Article 250 Section VI and Section VII of the
2002 NEC. Grounding Electrode Conductors shall be sized in accordance with Article 250.66
and Table 250.66 of the 2002 NEC and should be installed in accordance with Article 250
Symmetra MW 1000 kW 480 V Installation - 990-4112E 31
Specifications: Electrical Specification
Section III of the 2002 NEC.
8. Nominal Battery Discharge current based on rated load, and nominal battery voltage.
9. Maximum Battery Discharge current based on rated load at end of discharge.
10. Heat dissipation calculated at rated load capacity.
11. This current is at 125% of rated load and is electronically current-limited to a maximum of 10
minutes. This value is only provided so the engineer can ensure that the selected AC output
circuit over-current device’s time-current characteristic will support this condition.
a. Temperature rating of conductors: 194
column. Use only copper conductors. 167
b. Reference: NEC Handbook 2002. Consult local codes for possible variations.
c. All cable ratings are supplied as guidelines only. These guidelines are recommendations only,
and should not be considered substitutes for review and compliance with NEC, national, or
local codes. Consult with your licensed engineer for site-specific applications. 86
assumed. Over-current protection provided by others.
o
F (90oC). Reference: Table 310-16 of NEC, 75oC
o
F (75oC) cable terminal connectors assumed.
o
F (30oC)
Table 2 - Table 310-16 (National Electrical Code)
National Electrical Code and NEC are registered trademarks of the National Fire Protection
Association, Quincy, MA.
Allowable Ampacities of Insulated Conductors rated 0 Through 2000 Volts, 60
o
(140
F Through 194oF), Not More Than Three Current-Carrying Conductors in Raceway, Cable, or
Earth (Directly Buried), Based on Ambient Temperature of 30
o
C (86oF).
o
C Through to 90oC
32 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Specifications: Electrical Specification
Size Temperature Rating of Cables (See Table 310-13) Size
60
(140
o
C
o
F)
75
(167
o
C
o
F)
90
(194
o
C
o
F)
60
(140
o
C
o
F)
75
(167
o
C
o
F)
90
(194
o
C
o
F)
Typ es
TBS,SA,SIS,TH
HN,THHW,TH
W-2,THWN-2,
RHH,RHW-2,
USE-2,XHH,
XHHW,
XHHW-2,ZW-2
AWG or
kcmil
AWG or
kcmil
Ty pes
TW,UF
Typ es
FEPW,RH,RH
W, TH HW ,
THW,THWN,
XHHW,
USE,ZW
Typ es
TBS,SA,SIS,FEP,
FEPB,MI,RHH,
RHW-2,THHN,
THHW,THW-2,
THWN-2,USE-2,
XHH,XHHW,XH
HW-2,ZW-2
Typ es
TW,UF
Typ es
RH,RHW,TH
HW,THW,
THWN,
XHHW,USE
Copper Aluminium or Copper-Clad Aluminium
18
16
14*
12*
10*
8
6
4
3
2
1
1/0
2/0
3/0
4/0
250
300
350
400
500
600
700
750
800
900
1000
1250
1500
1750
2000
20
25
30
40
55
70
85
95
110
125
145
165
195
215
240
260
280
320
355
285
400
410
435
455
495
520
545
560
-
-
-
20
25
35
50
65
85
100
115
130
150
175
200
230
255
285
310
335
380
420
460
475
490
520
545
590
625
650
665
14
18
25
30
40
55
75
95
110
130
150
170
195
225
260
290
320
350
380
430
475
520
535
555
585
615
665
705
735
750
20
25
30
40
55
65
75
85
100
115
130
150
170
190
210
225
260
285
310
320
330
355
375
405
435
455
470
-
-
20
30
40
50
65
75
90
100
120
135
155
180
205
230
250
270
310
340
375
385
395
425
445
485
520
545
560
-
-
25
35
45
60
75
85
100
115
135
150
175
205
230
255
280
305
350
385
420
435
450
480
500
545
585
615
630
-
-
-
-
-
12*
10*
8
6
4
3
2
1
1/0
2/0
3/0
4/0
250
300
350
400
500
600
700
750
800
900
1000
1250
1500
1750
2000
CORRECTION FACTORS
Ambient
Temp . (
21-25
26-30
31-35
36-40
41-45
46-50
51-55
56-60
61-70
71-80
For ambient temperatures other than 30
o
C)
1.08
1.00
0.91
0.82
0.71
0.58
0.41
-
-
-
1.05
1.00
0.94
0.88
0.82
0.75
0.67
0.58
0.33
-
o
C (86oF), multiply the allowable Ampacities shown above by
the appropriate factor shown below
1.04
1.00
0.96
0.91
0.87
0.82
0.76
0.71
0.58
0.41
1.08
1.00
0.91
0.82
0.71
0.58
0.41
-
-
-
1.05
1.00
0.94
0.88
0.82
0.75
0.67
0.58
0.33
-
1.04
1.00
0.96
0.91
0.87
0.82
0.76
0.71
0.58
0.41
Ambient
Temp . (
70-77
78-86
87-95
96-104
105-113
114-122
123-131
132-140
141-158
159-176
o
Reprinted with permission from NFPA 70-2005, National Electrical Code®, Copyright © 2004, National Fire Protection Association,
Quincy, MA 02169. This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is
represented only by the standard in its entirety.
F)
Symmetra MW 1000 kW 480 V Installation - 990-4112E 33
Specifications: Electrical Specification
Recommended cable, bolt, and lug sizes
Cable
Size
400 kcmil 0.5 in/12.7 mm 1.75 in/44.45 mm 1.39 in/35.31 mm Panduit
500 kcmil 0.5 in/12.7 mm 1.75 in/44.45 mm 1.54 in/39.12 mm Panduit
600 kcmil 0.5 in/12.7 mm 1.75 in/44.45 mm 1.70 in/43.18 mm Panduit
Bolt hole size Hole spacing Lug width
Lug P/N
(1)(2)
LCD400-12-6
(or equivalent)
LCD500-12-6
(or equivalent)
LCD600-12-6
(or equivalent)
Cable lugs are not supplied.
Note
Crimping
Tool and Dies
Manufacturer
recommended
crimping tool
and dies.
Manufacturer
recommended
crimping tool
and dies.
Manufacturer
recommended
crimping tool
and dies.
Torque specifications
Torque specifications
Bolt Size M8 10 lbf-ft/13.5 Nm
Bolt Size M10 22 lbf-ft/30 Nm
Bolt Size M12 37 lbf-ft/50 Nm
Bolt Size M14 55 lbf-ft/75 Nm
34 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Required Breaker Settings
The Symmetra® MW is a fault-tolerant system capable of handling and surviving overloads and
internal/external faults. The overload performances and fault clearings are possible when the system
meets specified minimum requirements for breaker settings. The settings are specified in the tables
below, but some of them can also be found in the Electrical Specification section. The settings are all
minimum settings and may not result in a drop-out.
See separate guide on parallel operation for information on required breaker settings in
parallel systems.
See also
Input and upstream breakers — minimum settings
Q1, Q5, and any upstream breaker
Duration [S] Current [A] Total load [%] Event/Operation
< 0.005 18 kA -- Internal fault clearing
∞
∞
∞
1880* 130 Overload on-line
1245 100 On-line
1370 110 On-line + Max. Battery
* Only applicable to Q1
Output and downstream breakers — minimum settings
Q2, Q4, Q6, and any downstream breaker
Duration [S] Current [A] Total load [%] Event/Operation
< 0.005 18 kA -- Internal fault clearing.
60 2406* 200 Overload on-line
600 1504* 125 Overload on-line
∞
1203 100 On-line
* Only applicable to Q2 and Q4
Charge
Symmetra MW 1000 kW 480 V Installation - 990-4112E 35
Specifications: Required Breaker Settings
18 kA is the maximum peak let-through current (including safety factor) available during clearing of
an internal fault in a 200 kW section or a Power Module. During or after a controlled fault clearing,
none of the breakers are allowed to trip on the instantaneous trip setting below the specified value.
This is also applicable to the upstream breakers, and a control of the instantaneous trip setting in this
part of the installation is required. The maximum peak let-through current is applicable to utility with
prospective short-circuit currents up to 200 kA.
The instantaneous trip setting must not be derated even though the UPS system is derated
in system output power. The system size has no influence on the instantaneous trip
Note
setting.
For derated systems, the APC Application Team provides the correct breaker settings and
breaker frame sizes.
Note
For upstream breakers not mentioned in the table, the APC Application Team provides
the correct breaker settings for on-line, overload, and trip currents.
Note
The following diagram shows a dual utility system in which the upstream breakers are named Q.
Correct settings of upstream breaker settings are mandatory. The system can also be configured as a
single utility system.
Dual Utility Installation
Q3
T1
Q
T2
Q
Q5
Q1
Q6
Q4Q2
36 Symmetra MW 1000 kW 480 V Installation - 990-4112E
General Specifications 480 V
Backfeed protection Built-in in the UPS
Humidity Max. 95% non-condensing
Protection class NEMA 1
Safety UL 1778 listed
Emission and immunity FCC part 15, sub part J Class A (conducted/radiated)
Symmetra MW 1000 kW 480 V Installation - 990-4112E 37
APC Worldwide Customer Support
Customer support for this or any other APC product is available at no charge in any of the following ways:
• Visit the APC Web site to access documents in the APC Knowledge Base and to submit customer
support requests.
– www.apc.com (Corporate Headquarters)
Connect to localized APC Web sites for specific countries, each of which provides customer support
information.
– www.apc.com/support/
Global support searching APC Knowledge Base and using e-support.
• Contact an APC Customer Support center by telephone or e-mail.
– Regional centers
Direct InfraStruXure
Customer Support Line
APC headquarters U.S.,
Canada
Latin America
Europe, Middle East,
Africa
Japan
Australia, New Zealand,
South Pacific area
(1)(877)537-0607
(toll free)
(1)(800)800-4272
(toll free)
(1)(401)789-5735
(USA)
(353)(91) 702000
(Ireland)
(0) 35434-2021
(61) (2) 9955 9366
(Australia)
– Local, country-specific centers: go to www.apc.com/support/contact for contact information.
Contact the
APC representative or other distributor from whom you purchased your APC product for
information on how to obtain local customer support.
Entire contents copyright 2007 American Power Conversion Corporation. All rights reserved.
Reproduction in whole or in part without permission is prohibited. APC, the APC logo, and Symmetra are
trademarks of American Power Conversion Corporation. All other trademarks, product names, and
corporate names are the property of their respective owners and are used for informational purposes only.
02/2007990-4112E
*990-4112E*
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