Installation
Symmetra® MW
800 kW
400 V
ON OFF
EMO
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
Electrical Wiring Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
PE and AC cable connections (top cable entry) . . . . . . . . . . . 12
Bottom Cable Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Preparing for bottom cable entry . . . . . . . . . . . . . . . . . . . . 13
Battery cable connection (bottom cable entry) . . . . . . . . . . . 15
PE and AC cable connections (bottom cable entry) . . . . . . . . 17
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D i
External 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 Earthing. . . . . . . . . . . . . . . . 27
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
AC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
DC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
AC Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
AC Input External Bypass SSW . . . . . . . . . . . . . . . . . . . . . 29
Heat dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Torque specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Required Breaker Settings (400 V Systems) . . . . . . . . . . . . . . . 31
Input and upstream breakers — minimum settings . . . . . . . . 31
Output and downstream breakers -— minimum settings . . . . 31
Appendix .............................................................. 33
System and Protective Earthing . . . . . . . . . . . . . . . . . . . . . . . . 33
TN Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Reference to IEC 60364-4-41 413.1.3 . . . . . . . . . . . . . . . . . 34
Reference to IEC 60364-5-54 546.2.3 . . . . . . . . . . . . . . . . . 34
Additional requirements for generating sets
(IEC 60364-5-55 551.4.2)
Protective devices in TN systems . . . . . . . . . . . . . . . . . . . . 35
TT Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Reference to IEC 60364-4-41 413.1.4 . . . . . . . . . . . . . . . . . 37
Protective devices in TT systems . . . . . . . . . . . . . . . . . . . . 37
. . . . . . . . . . . . . . . . . . . . . . . . . 35
ii Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
IT Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Reference to IEC 60364-4-41 413.1.5 . . . . . . . . . . . . . . . . . 39
Protective devices in IT systems . . . . . . . . . . . . . . . . . . . . . 40
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D iii
Safety
IMPORTANT SAFETY INSTRUCTIONS
- SAVE THESE INSTRUCTIONS
This guide contains important instructions for SYMF800KH 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 800 kW 3 × 400/230 V Installation - 990-1510D 1
Safety: IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS
Installation safety
Press the optional EPO (Emergency Power Off) button to switch off all AC and DC
power supply to connected equipment in the room and to cut off the load supply. The
EPO
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.
CAUTION!
All wiring to be in accordance with applicable national and/or local electrical wiring
rules.
This unit contains components that are sensitive to electrostatic discharge (ESD).
Follow proper ESD procedures to avoid severe damage to electronic components.
2 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
System Overview
UPS Sections
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 Mains Static Switch Module
(incorporated in the Control Section).
Input/Output Section
The Input/Output Section provides electrical connection of input and output.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 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)
ON OFF
EMO
2032 mm
Width:
1690 mm
Total width of UPS sections:
3716 mm
Weight:
Without Power Modules: 3548 kg
With Power Modules: 4230 kg
Control Section Input/Output SectionInverter Section
Width:
1012 mm
Width:
1014 mm
1
m
m
7
6
0
4 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Configuration 2 (Inverter Section placed to the right)
System Overview: Configurations
2032 mm
m
m
7
6
0
1
Control SectionInput/Output Section
Width:
1014 mm
Width:
1012 mm
Total width of UPS sections:
3716 mm
Weight:
Without Power Modules: 3548 kg
With Power Modules: 4230 kg
Inverter Section
Width:
1690 mm
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 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 supply to the load.
~~
2032 mm
1067mm
External Bypass Static Switch
Width:
1016 mm
Weight:
1 MW: 460 kg
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 800 kW 3 × 400/230 V Installation - 990-1510D
Electrical Installation
Electrical Wiring Principle
See separate guide on parallel operation for wiring overview in parallel systems.
See also
Batteries 1
Battery Breaker Box 1
6
Symmetra MW
9
9
Batteries 2
Battery Breaker Box 2
6
External Bypass Static Switch
= CABLING PROVIDED BY OTHERS
DC CABLING SHOULD BE SEGREGATED FROM AC CABLING
SEE BATTERY INSTALLATION INFORMATION
POWER WIRING AND CONTROL WIRING MUST BE SEGREGATED.
AC CIRCUIT CABLE LENGTHS (INPUT AND OUTPUT) SHOULD BE EQUAL ON ALL MODULES
DC CIRCUIT CABLE LENGTHS SHOULD BE EQUAL ON ALL MODULES
8.
9.
10.
INSTALLATION MUST COMPLY WITH NATIONAL AND LOCAL ELECTRICAL RULES.
11.
12.
13.
14.
Maintenance Bypass Panel (MBP)
MAINS
MAINS SOURCE 3X400/230V TN-S (PROVIDED BY OTHERS).
Q1 - Q6 WITH 2NO/2NC AUXILIARY CONTACTS.
Q7, Q8 DC RATED THERMAL MAGNETIC TRIP MOLDED CASE CIRCUIT BREAKER.
WITH 24VOLT DC UNDER VOLTAGE RELEASE (UVR) AND 2NO/2NC AUXILIARY CONTACTS.
1.2.3.4.5.
SEE THE INSTALLATION GUIDE FOR THE BREAKER SETTINGS OF Q1, Q3, Q4 AND Q5.
ALL AC POWER CABLING IS L1,L2,L3,N,PE.
UPS INPUT AND OUTPUT CONDUCTORS MUST BE IN SEPARATE CABLE RUNS.
UPS AND STATIC BYPASS WITHSTAND RATING, Icw = 200 KA
6.
7.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 7
Electrical Installation: Electrical 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 Operation Manual
Note
before 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
WARNING!
Before starting installation, check and test that all AC and DC power source
breakers are in open position.
WARNING!
Supply the UPS from a 3 × 400/230 V, L1, L2, L3, N, PE source or a high-impedance
grounded system.
CAUTION!
All wiring to be in accordance with applicable national and/or local electrical wiring
rules.
Use only copper conductors.
8 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Top Cable Entry
Preparing for top cable entry (Default)
Cable entry in Top Cover of Input/Output Section.
Top view
M6 Bolt
1.75 in /
44.45 mm
2.3 in / 58 mm
IN/OUT power cable (top entry)
DC
cable
entry
AC IN cable
entry
DC
cable
entry
AC OUT
cable 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
NN
Loosen the 8 bolts in both cable entry covers (4 bolts in each cover). Drill holes for the
grommets in areas shown. Install the grommets and re-fit the covers.
Install cable lugs on busbars. Use M12 bolts. Feed cables through the top grommets.
Connect L1, L2 and L3 to busbars where indicated.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 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 national wiring rules.
Note
10 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Top view of Input/Output Section
Electrical Installation: Top Cable Entry
DC
cable
entry
AC IN
cable entry
IN/OUT power cable (top entry)
Battery 1
(DC1 +/-)
BAT1-
DC
cable
entry
AC OUT
cable entry
Battery 2
(DC2 +/-)
BAT2+
M6 Bolt
1.75 in /
44.45 mm
BAT1-
1.75 in /
44.45 mm
2.3 in / 58 mm
BAT2+
L1 In
L2 In
L3 In
BAT1+
N N
L1 Out
L2 Out
L3 Out
BAT2—
Input/Output Section
Feed the battery cables through the grommets
Connect cables from battery system.
Connect cables from battery system.
BAT1+
BAT2-
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 11
Electrical Installation: Top Cable Entry
PE and AC cable connections (top cable entry)
Battery 1
PE
Bonding
Jumper (TNsystems) to
Input Neutral
Bar
Battery 2
Protective Earthing
conductors (red) for
Battery 2 & AC OUT
Protective Earthing
conductors (red) for
Battery 1 & AC IN
N
1.75 in /
44.45 mm
N
1.75 in /
44.45 mm
2.3 in / 58 mm
Earthing conductor
connected to
suitable earth
electrode TNsystems
Output circuit
grounding bar.
Feed the AC and PE cables through the top of Input/Output Section.
Connect cables.
12 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Bottom Cable Entry
A
A
Preparing for bottom cable entry
Cable entry in bottom cover of Input/Output Section
Top view
DC
cable
entry
DC
cable
entry
M6 Bolt
1.75 in /
44.45 mm
1.75 in /
44.45 mm
2.3 in / 58 mm
AC IN
cable entry
AC OUT
cable entry
To p v i e w
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
L1 IN
L2 IN
L3 IN
90 95
91 94
9392
BAT 1 BAT 2
N N
Top view
90
92
C IN
L3 IN
L2 IN
L1 IN
C OUT
95
93
L3 OUT
L2 OUT
L1 OUT
IN/OUT power cable (bottom entry).
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 13
L1 OUT
L2 OUT
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 grommets for AC, DC, and Output circuit grounding electrode cable in areas
shown.
No drilling or cutting should take place inside the UPS.
Note
c. Install grommets.
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 isolators in the topmost busbar position two steps to the front.
f. Move the two front isolators in the lowest busbar position two steps 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 M14 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 isolators in the topmost busbar position two steps to the front.
f. Move the two front isolators in the lowest busbar position two steps 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 M14 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 800 kW 3 × 400/230 V Installation - 990-1510D
Battery cable connection (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 national wiring rules.
Note
Electrical Installation: Bottom Cable Entry
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 15
Electrical Installation: Bottom Cable Entry
Bottom view of Input/Output Section
DC
cable
entry
DC
cable
entry
M6 Bolt
1.75 in /
44.45 mm
1.75 in /
44.45 mm
2.3 in / 58 mm
AC IN
cable entry
BAT1-
L1 In
L2 In
L3 In
BAT1+
N N
AC OUT
cable entry
BAT 2+
L1 Out
L2 Out
L3 Out
BAT2—
BAT1+
BAT1-
BAT2+
Battery 1
(DC1 +/-)
Battery 2
(DC2 +/-)
IN/OUT power cable (bottom entry)
Connect cables from battery system.
Connect cables from battery system.
16 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
BAT2-
PE and AC cable connections (bottom cable entry)
Bonding
Jumber (TNsystems) to
Input Neutral
Bar
Protective Earthing Conductors
for Battery 1 & AC IN
Electrical Installation: Bottom Cable Entry
Output circuit
grounding bar
Earthing conductor
connected to suitable
earth electrode TNsystems
Protective Earthing
Conductors for Battery 2 &
AC OUT
Output circuit
grounding bar
N
Battery 2
Battery 1
PE
N
1.75 in /
44.45 mm
2.3 in / 58 mm
Feed the AC and PE cables through the bottom of Input/Output Section.
1.75 in /
44.45 mm
Connect cables.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 17
External Bypass Static Switch Wiring
WARNING!
Before starting installation, check and test that all AC and DC power source
breakers are in open position.
WARNING!
Use only manual reset protection as input over-current protection.
WARNING!
Over-current protection required by national wiring rules.
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.
Use suitable breakers with a minimum of 0.8 in/20 mm air gap and trip function. The
breaker is controlled from the External Bypass SSW and will be tripped in case of
backfeed.
Note
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 Operation Manual
before working on circuit.”
The installation of the External Bypass Static Switch must comply with local and national
regulations.
Run matched set of phase cables in the same cable run(s).
Do not separate phases into different cable runs.
Use only copper conductors.
Top cable entry
Top view of top cable entry
Electrical Installation: External Bypass Static Switch Wiring
Top view of AC IN & OUT cable
connections
Port for communication cables
L1 OUT
L2 IN
L1 IN
UPS Summary
Normal
Normal
~~
X017
X012
X008A
X014B
X013
X014A
X008B
X011
X010
X405
X007
X021
X022
L2 OUT
L3 IN
L3 OUT
L1 IN
L1 OUT
L2 IN
L2 OUT
L3 IN
L3 OUT
External Bypass SSW
1.75 in /
44.45 mm
2.3 in / 58 mm
Loosen the 8 screws to remove top covers. Drill holes for grommets. Re-fit the covers and
1.75 in /
44.45 mm
install the grommets.
No drilling or cutting should take place over the top of the External Bypass SSW.
Note
Feed the cables through the grommets. Connect cables at cable connection points.
Connect grounding electrode conductor to busbar locations.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 19
Electrical Installation: External Bypass Static Switch Wiring
Bottom cable entry
External Bypass SSW
Top view of bottom cable entry
X017
X012
X008A
X014B
X013
X014A
X008B
X011
X010
X405
X007
X021
X022
UPS Summary
Top view of AC IN & OUT
bottom cable connections
Normal
Normal
~~
L1 IN
L1 OUT
L2 IN
L2 OUT
L3 IN
L3 OUT
Communication cable Port
Loosen the 8 screws to remove bottom covers. Drill holes for the grommets. Re-fit the covers
and install the grommets.
No drilling or cutting should take place inside the External Bypass SSW.
L1 IN
L1 OUT
1.75 in /
44.45 mm
L2 IN
L2 OUT
L3 IN
L3 OUT
2.3 in / 58 mm
1.75 in /
44.45 mm
Note
Feed the cables through the grommets. Connect cables at cable connection points.
Connect grounding electrode conductor to busbar locations.
20 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
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
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
Q
1
Terminator
0N-0765
612345
871091211
X134B
X134A
1
2
1
2
1
2
1
2
11
X173
2
X177
X128
X129
12
10
9
8
s
7
r
e
3
P
k
7
B
a
1
6 5
e
M
X
r
B
4
3 2
1
1
X177
s
r
e
P
k
B
a
e
M
r
B
X128
X129
1
2
X134B
4
5
3
2
+-+-+ -+-
H4
H3
21
5
43
MBP CAN I/ O board 1
Norm.op
X175
1
2
1
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
X172
109
0P4533
Maintenance Bypass Panel
Q8
+-+-
12 34
X182
4
2 3
X180
Battery CAN I/O board
1
X185
12
2
1
0P4512
X133A
X133B
3
12
+- +-+-
Q5
121187
1
X170
Earth fault sens or
X174
2
1
H7
H8
1
3
2
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 800 kW 3 × 400/230 V Installation - 990-1510D 21
Fuse1
Fuse234Fuse356Fuse4
Relay Board (Optional)
Location of optional Relay Board
123123
123123123123123123
NC 3
22 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
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 800 kW 3 × 400/230 V Installation - 990-1510D 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 800 kW 3 × 400/230 V Installation - 990-1510D
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 800 kW 3 × 400/230 V Installation - 990-1510D 25
Specifications
Low-Impedance/High-Impedance Earthing
The Symmetra
grounded system.
In a solid grounded system, the neutral power source (mains, 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 solid grounded system, or a high-impedance
Note
Grounding electrode conductor to be supplied by the customer.
For more information refer to “Appendix” in Installation Guide.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 27
Electrical Specifications
WARNING!
Supply the UPS from a dedicated, 3 × 400/230 V, L1, L2, L3, N, PE source or a
high-impedance grounded system.
CAUTION!
Ensure clockwise phase rotation (L1, L2, L3) of input voltages.
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 DC terminals: 50 kA
Note
AC Input
AC Input
Input rating 800 kW/kVA
Power Factor 1
Input Voltage 380 V
Input Frequency 50 Hz
Nominal input current (note 1) 1132 A
Input Current Limitation (note 2) 1422 A
Input Voltage 400 V
Input Frequency 50 Hz
Nominal input current (note 1) 1203 A
Input Current Limitation (note 2) 1466 A
Input Voltage 415 V
Input Frequency 50 Hz
Nominal input current (note 1) 1159 A
Input Current Limitation (note 2) 1447 A
28 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Specifications: Electrical Specifications
DC Input
DC Input
Nominal Voltage (note 3) 2 x 384 V
I
Discharge (note 4) 1085 A
Nom
I
Discharge (note 5) 1276 A
Max
CAUTION!
The minimum DC voltage rating of the battery supply over-current protective device is
500 V.
AC Output
AC Output
Voltage 380 V
- Current Nom (note 8) 1094 A
- Max (note 7) 1311 A
Voltage 400 V
- Current Nom 1155 A
- Max (note 7) 1444 A
Voltage 415 V
- Current Nom 1113 A
- Max (note 7) 1391 A
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)
380 V 1094 A
400 V 1155 A
415 V 1113 A
Heat dissipation
24.74 kW / 84.4 kBTU/hr (note 6)
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 29
Specifications: Electrical Specifications
Notes
1. Nominal (Nom): Input current based on rated load, nominal input voltage and fully charged
batteries.
2. Current limitation is maximum allowed via electronic current limiting and is based on full
battery recharge + nominal load and -10% input voltage.
3. Nominal battery voltage assumed to be 2.0 volts/cell (lead technology).
4. Nominal Battery Discharge current based on rated load, and nominal Battery voltage.
5. Maximum Battery Discharge current based on rated load at end of Discharge.
6. Heat dissipation calculated at rated load capacity.
7. 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 overcurrent device’s time-current characteristic will support this condition.
8. At 380 V, nominal output is reduced from 200 kW to 180 kW in each section.
Torque specifications
Torque specifications
Bolt Size M8 13.5 Nm
Bolt Size M10 30 Nm
Bolt Size M12 50 Nm
Bolt Size M14 75 Nm
30 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Required Breaker Settings (400 V Systems)
Contact APC Application Team for Required Breaker Settings in 380 V and 415 V
systems.
Note
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
See also
Input and upstream breakers — minimum settings
parallel systems.
Q1, Q5, and any upstream breaker
Duration [S] Current [A] Total load [%] Event/Operation
< 0.005 22 kA -- Internal fault clearing
∞
∞
∞
1466* 127 Overload on-line
1195 100 On-line
1315 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 22 kA -- Internal fault clearing.
60 2406* 200 Overload on-line
charge
600 1504* 125 Overload on-line
∞
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 31
1155 100 On-line
* Only applciable to Q2 and Q4
Specifications: Required Breaker Settings (400 V Systems)
22 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 or parallel 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 diagram shows a dual mains systems in which the upstream breakers are named Q. Correct
settings of upstream breaker settings are mandatory. The systems can also be configured as single
mains systems.
Dual Mains Single Installation
Q3
T1
Q
T2
Q
Q5
Q1
Q6
Q4Q2
32 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Appendix
System and Protective Earthing
The purpose of this appendix is to describe the system- and protective earthing principles of the
Symmetra
®
MW.
CAUTION!
All wiring to be in accordance with applicable national and/or local electrical wiring
rules.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 33
TN Systems
Characteristics
TN systems have one point connected directly to ground. All exposed conductive parts must be
connected to that point by protective conductors.
Depending on the way the neutral and protective conductors are fed, there are three types of TN
systems:
• TN-S system: a separate protective conductor is used in the system
• TN-C-S system: the neutral and protective conductors are combined to one single conductor in
a part of the system
• TN-C system: the neutral and protective conductors are combined to one single conductor in the
whole system
Reference to IEC 60364-4-41 413.1.3
All exposed conductive parts of the installation must be connected to the earthed point of the power
system by protective conductors which must be earthed at or near to each relevant transformer or
generator.
Exposed conductive parts that are accessible at the same time must be connected to the same earthing
system, either individually, in groups or collectively.
Normally the earthed point of the power system is the neutral point. If a neutral point is not available
or accessible, a phase conductor must be earthed. The phase conductor must not serve as a PEN
conductor.
In fixed installations a single conductor may serve both as a protective conductor and a neutral
conductor (PEN conductor).
Reference to IEC 60364-5-54 546.2.3
If from any point in the installation the neutral and protective functions are provided by separate
conductors, it is inadmissible to connect these conductors to each other from that point. At the point
of separation, separate terminals or bars must be provided for the protective and neutral conductors.
The PEN conductor must be connected to the terminal or bar intended for the protective conductor.
If there are other effective earth connections, the protective conductors must be connected to such
points when it is possible. It may be necessary to earth at additional points to ensure that the
potentials of protective conductors remain as close as possible to that of earth in case of a fault.
34 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
Appendix: TN Systems
Additional requirements for generating sets (IEC 60364-5-55 551.4.2)
To be used when the generating set provides a switched alternative to the public supply.
Protection by automatic disconnection of supply must not rely on the connection to the earthed points
of the public supply system when the generator is operating as a switched alternative to a TN system.
A suitable earth electrode must be provided.
Protective devices in TN systems
The following protective devices are recognized in TN systems:
• Overcurrent protective devices
• Residual current protective devices (not to be used in TN-C systems)
When a residual current protective device is used in a TN-C-S system, a PEN conductor must not be
used on the load side. The connection of the protective conductor to the PEN conductor must be made
on the source side of the residual current protective device (see below illustration):
L1 L1
SOURCE LOAD
L1 L1
L1 L1
PEN N
Residual Current Sense
PE
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 35
Appendix: TN Systems
The characteristics of protective devices and the circuit impedances shall be such that, if a fault of
negligible impedance occurs anywhere in the installation between a phase conductor and a protective
conductor or exposed conductive part, automatic disconnection of the supply will occur within 5
seconds (valid for distribution circuits), the following condition fulfilling this requirement:
ZsIa× U0≤
In the condition:
Z
s
is the impedance of the fault loop comprising the source, the live conductor up to the point of the
fault, and the protective conductor between the point of the fault and the source
I
a
is the current causing the automatic operation of the disconnecting protective device within a
conventional time not exceeding five seconds
U
0
is the nominal AC RMS voltage to earth
If a fault occurs close to the UPS (before the power distribution) while the UPS system is in Battery
Operation and Bypass is unavailable, the available power is unable to activate the protective device.
In that situation the Inverter will shut down in five seconds (IEC 60364-4-41 413.1.3.5 norm). If a
residual current protective device is used, this device will disconnect the supply.
The four diagrams show the Symmetra MW installed in four different TN systems:
• Earthing arrangements and protective conductors - Symmetra
• Earthing arrangements and protective conductors - Symmetra
®
MW in “TN-S installation”
®
MW in “TN-S installation”
(Legal in DK - special cases)
• Earthing arrangements and protective conductors - Symmetra
• Earthing arrangements and protective conductors - Symmetra
®
MW in “TN-C-S installation”
®
MW in “TN-C installation”
36 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
TT Systems
Characteristics
TT systems have one point connected directly to ground and all exposed conductive parts of the
installation must be connected to an earth electrode. This earth electrode is independent of the power
system earthed point.
Reference to IEC 60364-4-41 413.1.4
All exposed conductive parts that are protected collectively by the same protective device must be
connected to a common earth electrode together with the protective conductors. In installations where
several protective devices are utilized in series, the requirement applies separately to all exposed
conductive parts protected by each device.
The neutral point or, if a neutral point does not exist, a phase conductor of each generator station or
transformer station must be earthed.
Protective devices in TT systems
The following protective devices are recognized in TT systems:
• Overcurrent protective devices
• Residual current protective devices
Overcurrent protective devices are only applicable for protection against indirect contact in TT
systems where a low R
The condition must be fulfilled.
RAIa× 50 V≤
value exists (see specification below).
A
In the condition:
R
A
I
a
is the sum of resistance of the earth electrode and the protective conductor for the exposed
conductive parts
is the current causing the automatic operation of the protective device.
When the protective device is a residual current protective device, I
current I
n
Δ
is the rated residual operating
a
For discrimination purposes, S-type residual current protective devices may be used in series with
general type residual current protective devices. To provide discrimination with S-type residual
current protective devices, an operating time not exceeding 1 second is permitted in distribution
circuits.
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 37
Appendix: TT Systems
When the protective device is an overcurrent protective device, it must be either:
• a device with inverse time characteristics and
I
must be the current causing automatic
a
operation within 5 seconds, or
• a device with an instantaneous tripping characteristic and
causing instantaneous tripping
The following diagram shows a Symmetra
®
MW installed in a TT system:
• Earthing arrangements and protective conductors - Symmetra
I
must be the minimum current
a
®
MW in “TT installation”
38 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
IT Systems
Characteristics
In IT systems the installation is insulated from earth or connected to earth through a sufficiently high
impedance. Exposed conductive parts are earthed individually, in groups, or collectively.
Reference to IEC 60364-4-41 413.1.5
In IT systems the installation must be insulated from earth or connected to earth through a sufficiently
high impedance. This connection must be made either at the neutral point of the system or at an
artificial neutral point. The latter may be connected directly to earth if the resulting zero-sequence
impedance is sufficiently high. In installations where no neutral point exists, a phase conductor can
be connected to earth through an impedance. In case of a single fault to an exposed conductive part or
to earth, the fault current will be low and disconnection will not be imperative.
Exposed conductive parts must be earthed individually, in groups or collectively and the condition
RAId× 50V≤
must be fulfilled.
In the condition:
R
A
I
d
is the resistance of the earth electrode for exposed conductive parts
is the fault current of the first fault of negligible impedance between a phase conductor and an
exposed conductive part. The I
of the electrical installation into account
value takes the leakage currents and the total earthing impedance
d
In systems where an IT system is used for continuity of supply, an insulation monitoring device must
be provided to indicate the occurrence of a first fault from a live part to the exposed conductive parts
or to the earth. It is recommended to eliminate a first fault as soon as possible.
Depending on whether all exposed conductive parts are interconnected by a protective conductor
(collectively earthed) or are earthed in groups or individually, after a first fault, the disconnection
conditions of the supply for a second fault must be as follows:
a. In installations where the exposed conductive parts are earthed in groups or individually, the
protection conditions for TT systems apply (see 413.1.4.1)
b. In installations where the exposed conductive parts interconnected by a protective conductor
collectively earthed, the conditions for TN systems apply
In installations where the neutral is not distributed, the following conditions must be fulfilled:
3U
×
0
------------------- -
Z
≡
s
2I
×
a
Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 39
Appendix: IT Systems
In installations where the neutral is distributed, the following conditions must be fulfilled:
U
0
-------------
Z′
≤
s
2Ia×
In the condition:
U
0
Z
s
is the nominal AC RMS voltage between phase and neutral
is the impedance of the fault loop comprising the phase conductor and the protective conductor of
the circuit
Z′
s
is the impedance of the fault loop comprising the neutral conductor and the protective conductor of
the circuit
I
a
is the operating current of the protective device. The disconnecting time is 5 seconds (distribution
circuits)
Protective devices in IT systems
The following protective devices are recognized in IT systems:
• Insulation monitoring devices
• Overcurrent protective devices
• Residual current protective devices
®
The following diagram shows a Symmetra
MW installed in a IT system:
• Earthing arrangements and protective conductors - Symmetra
®
MW in “IT installation”
40 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
( PDU )
Residual current protective device
can be used.
PE
Residual Current Sense
Q4
Q6
See: IEC 60364-4-41 § 413.1.3
Earthing arrangements and protective conductors - Symmetra MW in TN-S installation
L1L3L2
PE
Q3
External SSW-Bypass
Switchgear
Main Protective Earthing Terminal
Bypass - input Bypass - output
L1L3L2
PE
Q5
L1L3L2
UPS - output
u
M
u
Symmetra MW
Delta
Inverter
iii
Mains - input
L1L3L2
Q1
N
PE
Main
inverter
u
Main Protective Earthing Terminal
Battery 2
Common-mode filter
E
N
Protective Earthing Conductor
Protective Earthing Conductor
Battery 1
+- +-
Q7 Q8
PE
PE
Battery
breaker
box
Suitable earth electrode
with reference to IEC 60364-5-55 § 551.4.2
Battery 1 Battery 2
Battery
PE
rack
Residual Current Sense
With reference to:
IEC 60364-4-41 § 413.1.3.1
Minimum cross-sectional areas:
IEC 364-5-54 § 543.1.1
Residual current protective device can not be
used at this point.
Owing to parallel return path for the fault current
N
Service Entrance
PE
( PDU )
PE
Residual current protective
device can be used.
Residual Current Sense
Q4
Q6
( Legal in DK - special cases )
See: IEC 60364-4-41 § 413.1.4 and "Stærkstrømsbekendtgørelsen" § 551.6.3, Note
Earthing arrangements and protective conductors - Symmetra MW in "TN-S installation"
L1L3L2
PE
Q3
External SSW-Bypass
Switchgear
Main Protective Earthing Terminal
Bypass - input Bypass - output
L1L3L2
PE
Q5
L1L3L2
UPS - output
u
M
u
Symmetra MW
Delta
Inverter
iii
Mains - input
L1L3L2
Q1
N
PE
Main
inverter
u
Main Protective Earthing Terminal
Battery 2
Common-mode filter
PE
E
N
Protective Earthing Conductor
Protective Earthing Conductor
+- +-
Battery 1
Battery
Legal in DK ( Special cases )
breaker
Q7 Q8
box
With reference to:
Stærkstrømsbekendtgørelsen § 551.6.3 Note
PE
( § 551.6.3 is missing in IEC 60364-5-55 )
Battery 1 Battery 2
Battery
PE
rack
Residual Current Sense
With reference to:
IEC 60364-4-41 § 413.1.3.1
Minimum cross-sectional areas:
IEC 364-5- 54 § 543.1.1
Residual current protective device can not be
used at this point.
Owing to parallel return path for the fault current
N
Service Entrance
PE
( PDU )
PE
Residual current protective
device can be used.
Residual Current Sense
Q4
Q6
See: IEC 60364-4-41 § 413.1.3
Switchgear
Earthing arrangements and protective conductors - Symmetra MW in "TN-C-S installation"
L1L3L2
PE
Q3
External SSW-Bypass
Main Protective Earthing Terminal
Bypass - input Bypass - output
PE
L1L3L2
Q5
L1L3L2
UPS - output
u
M
u
Symmetra MW
Delta
Inverter
iii
Mains - input
L1L3L2
Q1
Residual Current Sense
N
PE
Main
inverter
u
Main Protective Earthing Terminal
Battery 2
Common-mode filter
PE
E
N
Protective Earthing Conductor
PE
+- +-
Battery 1
Battery
breaker
box
Suitable earth electrode
with reference to IEC 60364-5-55 § 551.4.2
Q7 Q8
PE
Battery 1 Battery 2
Battery
PE
rack
Residual current protective
device can not be used.
Service Entrance
PEN
With reference to:
IEC 60364-4-41 § 413.1.3.1
PEN
( PDU )
PE
N
PEN
Q4
Q6
See: IEC 60364-4-41 § 413.1.3
This system configuration is not recommended
Earthing arrangements and protective conductors - Symmetra MW in TN-C installation
L1L3L2
PE
Q3
External SSW-Bypass
Main Protective Earthing Terminal
Bypass - input Bypass - output
Switchgear
Q5
L1L3L2
PE
L1L3L2
UPS - output
u
M
u
Symmetra MW
Delta
Inverter
iii
Mains - input
L1L3L2
N
PE
Main
inverter
u
Main Protective Earthing Terminal
Common-mode filter
E
N
PEN PEN
The "Common-Mode Filter" has no effect in this
system configuration.
Battery 2
Battery 1
+- +-
Q7 Q8
PE
PE
Battery
breaker
box
Battery 1 Battery 2
Battery
PE
rack
Q1
Suitable earth electrode
with reference to IEC 60364-5-55 § 551.4.2
PEN
With reference to:
IEC 60364-4-41 § 413.1.3.1
Service Entrance
PEN
( PDU )
Residual current protective device
can be used.
PE
Residual Current Sense
Q4
Q6
Q3
See: IEC 60364-4-41 § 413.1.4
Earthing arrangements and protective conductors - Symmetra MW in TT installation
Switchgear
L1L3L2
PE
External SSW-Bypass
Main Protective Earthing Terminal
L1L3L2
UPS - output
u
Main
M
u
Symmetra MW
Delta
Inverter
iii
N
PE
inverter
u
Main Protective Earthing Terminal
Battery 2
Common-mode filter
+- +-
Battery 1
Battery 1 Battery 2
Q7 Q8
Bypass - input Bypass - output
Q5
L1L3L2
PE
Mains - input
L1L3L2
PE
E
N
Protective Earthing Conductor
PE
PE
Battery
breaker
box
< 50V
a
x I
A
Battery
PE
rack
Q1
With reference to IEC 60364-4-41 § 413.1.4.2
Suitable earth electrode: R
Residual Current Sense
With reference to IEC 60364-4-41 § 413.1.4.1
Residual current protective device can not be
used at this point.
Owing to parallel return path for the fault current
Service Entrance
N
( PDU )
Residual current protective device
can be used.
PE
Residual Current Sense
Q4
Q6
See: IEC 60364-4-41 § 413.1.5
Earthing arrangements and protective conductors - Symmetra MW in "IT - installation"
Switchgear
L1L3L2
PE
Q3
External SSW-Bypass
Main Protective Earthing Terminal
Bypass - input Bypass - output
L1L3L2
PE
L1L3L2
UPS - output
u
M
u
Symmetra MW
Delta
Inverter
iii
Mains - input
L1L3L2
N
PE
Main
inverter
u
Main Protective Earthing Terminal
Battery 2
Common-mode filter
PE
E
N
+- +-
Battery 1
Q7 Q8
PE
Battery
breaker
box
Battery 1 Battery 2
Battery
PE
rack
Z
Earthing Conductor
Grounding
impedance
< 50V
Q5
Q1
Protective Earthing Conductor
( Alternative to earth electrode )
d
x I
A
Suitable earth electrode: R
With reference to IEC 60364-4-41 § 413.1.5.3
Alternative:
The exposed-conductive-parts can be earthed individually or in groups.
But special demands are required. See IEC 60364-4-41 § 413.1.5.5 a)
Insulation
Monitoring
Device
Requirement !!
IEC 60664-4-41 § 413.1.5.4
Grounding
impedance
Service Entrance
Z
N
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.
02/2007990-1510D
*990-1510D*
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