APC GALAXY 5000 User Manual

MGETM GalaxyTM 5000

20 - 120 kVA

Installation and user manual

Introduction

Thank you for selecting an APC by Schneider Electric product to protect your electrical equipment.

The MGE We recommend that you take the time to read this manual to take full advantage of the many features of your UPS.

GalaxyTM 5000 range has been designed with the utmost care.

APC by Schneider Electric pays great attention to the environmental impact of its products. Measures that have made MGE

◗ the eco-design approach used in product development, ◗ the elimination of harmonic disturbances reinjected into the AC source, ◗ production in an ISO 14001 certified factory, ◗ recycling of the MGE

To discover the entire range of APC by Schneider Electric products and the options available for the MGE

GalaxyTM 5000 a reference in environmental protection include:

GalaxyTM 5000 at the end of its service life.

GalaxyTM 5000

range, we invite you to visit our web site, www.apc.com, or contact your local APC by Schneider Electric representative.

34001813EN/AE - Page 2

All products in the MGETM GalaxyTM 5000 range are protected by patents. They implement original technology not available to competitors of APC by Schneider Electric.

To take into account evolving standards and technology, equipment may be modified without notice. Indications concerning technical characteristics and dimensions are not binding unless confirmed by APC by Schneider Electric.

This document may be copied only with the written consent of Schneider Electric and its affiliated companies. Authorised copies must be marked

GalaxyTM 5000 Installation and user manual no. 3400181300".

"MGE

Safety rules

Safety of persons

The UPS must be installed in a room with restricted access (qualified personnel only, according to standard 62040-1-2). A UPS has its own internal power source (the battery). Consequently, the power outlets may be energised even if the UPS is disconnected from the AC-power source.

Dangerous voltage levels are present within the UPS. It should be opened exclusively by qualified service personnel. The UPS must be properly earthed. The battery supplied with the UPS contains small amounts of toxic materials. To avoid accidents, the instructions below must be observed.

◗ Never operate the UPS if the ambient temperature and relative humidity are higher than the levels specified in the

documentation.

◗ Never burn the battery (risk of explosion). ◗ Do not attempt to open the battery (the electrolyte is dangerous for the eyes and skin). ◗ Comply with all applicable regulations for the disposal of the battery. ◗ Caution, wait five minutes before opening the UPS to allow the capacitors to discharge. ◗ Caution, there is high leakage current, the earthing conductor must be connected first. ◗ The product must be installed on a non-inflammable surface (e.g. concrete). ◗ Caution, battery replacement must be carried out by qualified personnel.

Safety

Product safety

A protection circuit breaker must be installed upstream and be easily accessible.

◗ Never install the UPS near liquids or in an excessively damp environment. ◗ Never let a liquid or foreign body penetrate inside the UPS. ◗ Never block the ventilation grates of the UPS. ◗ Never expose the UPS to direct sunlight or a source of heat. ◗ When replacing battery cells, use the same type and number of cells.

Special precautions

◗ The UPS connection instructions contained in this manual must be followed in the indicated order. ◗ Check that the indications on the rating plate correspond to your AC-power system and to the actual electrical consumption

of all the equipment to be connected to the UPS.

◗ If the UPS must be stored prior to installation, storage must be in a dry place. ◗ The admissible storage temperature range is -25° C to +45° C. ◗ If the UPS remains de-energised for a long period, we recommend that you energise the UPS for a period of 24 hours, at

least once every month. This charges the battery, thus avoiding possible irreversible damage.

◗ The UPS is designed for normal climatic and environmental operating conditions concerning the altitude, ambient operating

temperature, relative humidity and ambient transport and storage conditions.

◗ Using the UPS within the given limits guarantees its operation, but may affect the service life of certain components,

particularly that of the battery and its autonomy. The maximum storage time of the UPS is limited due to the need to recharge its integrated battery.

◗ Unusual operating conditions may justify special design or protection measures:

- harmful smoke, dust, abrasive dust,

- humidity, vapour, salt air, bad weather or dripping,

- explosive dust and gas mixture,

- extreme temperature variations,

- bad ventilation,

- conductive or radiant heat from other sources,

- cooling water containing acid or impurities which may cause scale, silt, electrolysis or corrosion of converter parts exposed to water,

- strong electromagnetic fields,

- radioactive levels higher than those of the natural environment,

- fungus, insects, vermin, etc.,

- battery operating conditions.

◗ The UPS must always be installed in compliance with: ◗ the requirements of standard IEC 60364-4-42: Protection from thermal effects. ◗ standard IEC 60364-4-41: Protection from electric shock. ◗ standard IEC 60364-4-482: Electrical installations of buildings. ◗ in France, the requirements of standard NFC 15-100.

34001813EN/AE - Page 3

Foreword

Pictograms

Document Display

Danger, these instructions are imperative.

Information, advice, help

Visual indication

Action

Audio signal

LED OFF

LED flashing

LED ON

Earth cables

Vertical selection

Other selection

Enter / Confirm

Event scroll in log

Page scroll in log

Fast forward

Forward

Details

Circular menu

mai

0101 1010 0101

Move up or down one page

Event selection in log by date and time

Increase

Decrease

Save

Alarm

Status conditions

Settings

Maintenance

Other cables

E S

Graphical display

Control

Return to previous display

C D

Delete

VOLT

Access to measurements

Buzzer off

34001813EN/AE - Page 4

Contents

1. Presentation

1.1 MGE TM Galaxy TM 5000 .............................................................................................................. 8

UPS cabinet .................................................................................................................................. 8

External battery cabinet / auxiliary cabinet ...................................................................................8

1.2 Inside the UPS cabinet, access to connections ......................................................................... 9

1.3 Cabinet layout (normal or false floor) ...................................................................................... 10

1.4 User-machine interface ...............................................................................................................11

1.5 Relay communication card .........................................................................................................11

2. Installation

2.1 Location ....................................................................................................................................... 12

2.2 Layout of cabinets ...................................................................................................................... 12

2.3 Removing the cardboard protecting the batteries ................................................................... 13

In the UPS .................................................................................................................................. 13

In the external battery cabinet ..................................................................................................... 13

2.4 Required protective devices and cable sizes ........................................................................... 14

Recommended upstream protection ........................................................................................... 14

Recommended downstream protection ...................................................................................... 14

Earth-leakage current ................................................................................................................. 14

Required cable sizes ................................................................................................................... 15

Required cable sizes for parallel UPS installations with an external bypass .............................. 16

2.5 2.5 System earthing arrangements ........................................................................................... 17

TNS upstream and TNS downstream installation ....................................................................... 17

TNC upstream, TNS downstream ............................................................................................... 18

Installation with upstream IT and downstream TNS ................................................................... 18

Installation with upstream TT and downstream TT (with upstream differential protection) ......... 18

Frequency converter (without Bypass AC input) ......................................................................... 19

Parallel configuration without external bypass cabinet and with common normal and Bypass AC

inputs (maximum two units in parallel) ........................................................................................ 19

Parallel configuration without external bypass cabinet and with separate normal and Bypass AC

inputs (maximum two units in parallel) ........................................................................................ 20

Parallel UPS with external bypass cabinet and separate Normal and Bypass AC network inputs (6

UPS in parallel for 4PN) .............................................................................................................. 21

2.6 Connection of power cables in a single UPS unit ................................................................... 22

2.7 Earth-cable connection for a single unit in a TNC earthing system ...................................... 23

2.8 Connection of power cables for parallel UPS units ................................................................. 24

Equipotential bonding between parallel-connected units ............................................................ 24

Redundant parallel configuration (maximum two UPS units for Pn) ........................................... 25

2.9 Connection of the 150 kVA external bypass cabinet ............................................................... 28

2.10 Connection of the 360 kVA external bypass cabinet ............................................................. 29

2.11 Connection of the 600 kVA external bypass cabinet ............................................................. 30

2.12 Auxiliary interconnections between UPS units in parallel configurations .......................... 31

Redundant parallel configuration (maximum two UPS units) ...................................................... 31

.................................................................................................................................................... 31

Parallel configuration for increased capacity (maximum four UPS units) ................................... 32

Fitting the protection cover for the auxiliary interconnection cables ........................................... 33

2.13 Connection of general shutdown or emergency power off (EPO) terminal block .............. 33

2.14 Connection of the relay communications card ...................................................................... 34

2.15 Running the control/communications cables ........................................................................ 36

Single UPS ................................................................................................................................. 36

Parallel UPS ................................................................................................................................ 37

334001813EN/AE - Page 5

Contents

2.16 Power connections for an external battery cabinet ...............................................................38

2.17 Assembly and connection of an empty battery cabinet ........................................................38

Mounting the battery circuit breaker kit ........................................................................................38

Mounting the shelves and the battery cells .................................................................................39

2.18 Control connections for an external battery cabinet .............................................................40

2.19 Connection of an input isolating transformer .........................................................................41

2.20 Connection of an output isolating transformer ......................................................................41

3. Operation

3.1 Shutting down a single UPS .......................................................................................................42

3.2 Restarting a single UPS ..............................................................................................................42

3.3 Shutting down a parallel configuration .....................................................................................43

3.4 Restarting a parallel configuration .............................................................................................43

3.5 Operation of mimic-panel LEDs .................................................................................................44

Single UPS start sequence on Normal AC input .........................................................................44

Single UPS start sequence on Bypass AC input .........................................................................44

3.6 Operating modes .........................................................................................................................45

Normal (double conversion) mode ..............................................................................................45

ECO mode (single UPS only) ......................................................................................................45

3.7 Load on battery power ................................................................................................................46

Transfer to battery power .............................................................................................................46

End of battery power ...................................................................................................................46

3.8 UPS personalisation ....................................................................................................................46

Access to the personalisation functions ......................................................................................46

Operating mode ...........................................................................................................................47

Frequency ....................................................................................................................................47

Automatic bypass ........................................................................................................................47

Battery .........................................................................................................................................47

3.9 Relay contacts (communications card) .....................................................................................48

3.10 Display functions .......................................................................................................................49

4. Maintenance

4.1 Identification of alarms ...............................................................................................................50

4.2 Life Cycle Monitoring (LCM) .......................................................................................................50

4.3 UPS isolation ................................................................................................................................51

Single UPS ..................................................................................................................................51

Frequency converter ....................................................................................................................51

UPS operating in ECO mode .......................................................................................................51

Parallel UPS configuration without external bypass cabinet ........................................................52

Parallel UPS configuration with external bypass cabinet .............................................................53

4.4 Return to the normal position ....................................................................................................54

Single UPS ..................................................................................................................................54

Frequency converter ....................................................................................................................54

Parallel UPS configuration without external bypass cabinet ........................................................55

Parallel UPS configuration with external bypass cabinet .............................................................56

4.5 Training centres ...........................................................................................................................57

5. Environment

6. Available options

Backfeed option ...........................................................................................................................59

334001813EN/AE - Page 6

Contents

NMC (Network Management Card) option .................................................................................. 59

Optional communications card with additional power relay ........................................................ 59

Optional serial communications card .......................................................................................... 59

Telpac Power Services option ..................................................................................................... 59

AS4I option ................................................................................................................................. 59

Multislot option ............................................................................................................................ 59

External synchronisation module option ..................................................................................... 59

IP32 option .................................................................................................................................. 59

7. Appendices

7.1 Technical sheets ......................................................................................................................... 60

Center of gravity .......................................................................................................................... 60

Electrical characteristics ............................................................................................................. 61

Thermal characteristics ............................................................................................................... 64

General characteristics of MGE TM Galaxy TM 5000 UPSs ...................................................... 65

General characteristics of MGE TM Galaxy TM 5000 UPSs (cont.) ........................................... 66

UPS components ........................................................................................................................ 66

7.2 Options ........................................................................................................................................ 67

IP32 installation ........................................................................................................................... 67

7.3 Glossary ....................................................................................................................................... 68

334001813EN/AE - Page 7

1. Presentation

1.1 MGE

UPS cabinet

Galaxy TM 5000

Dimensions

UPS power rating (kVA)

20/30/40/60 without battery

80/100/120 without battery

20/30/40/60/80 with internal

Dimensions (H x W x D)

1900 x 712 x 850 mm

1900 x 1112 x 850 mm

battery

Weight in kg (UPS without battery or with

built-in battery)

Backup time

UPS power rating (kVA)

203040 60 80 100

120

Without

400 400 400 520 520

battery

External battery cabinet / auxiliary cabinet

5 min 808 808 958 1120

10 min 808 958 1045

15 min 958 1045

30 min 1045

Dimensions (H x W x D) and weight

Cabinet 700 mm (empty)

Cabinet 1000 mm

1900 x 712 x 850 mm 135 kg

1900 x 1012 x 850 mm 150 kg

wide (empty)

Weight in kg (cabinet alone)

Backup time

5 min

10 min

UPS power rating (kVA)

40 60 80 100 120

885 980

885 1142 1307

34001813EN/AE - Page 8

15 min

30 min 882 1307

885 1142 1307 1764

1764 2439 2742

Weights highlighted in grey are for double cabinets.

1.2 Inside the UPS cabinet, access to connections

Example of version with built-in battery

1. Presentation

(1)Connectors for auxiliary interconnections of parallel UPS units (INTN card)

(2)User-machine interface

(3)Slot for relay communications card

(4) Free slots for optional communication

cards

(5) Open cabinet door

(6) Screw-type terminal block for connections

of contacts and coils for two external battery circuit breakers (7) Screw-type terminal block for connection of emergency power off (EPO)

(8) Q1: input switch for Normal AC input

Q1 Q4S Q3BP Q5N

QF1

Simplified diagram of power connections

Q3BP

Bypass AC

Normal AC

Q4S

PFC

(9) Q4S: input switch for Bypass AC input

(10) Q3BP: bypass switch

(11) Q5N: UPS output switch

(12) Protection cover for power-connection

terminal blocks (13) QF1: battery circuit breaker (only versions with built-in battery)

Q5N

Load

QF1

Battery cabinet

34001813EN/AE - Page 9

1. Presentation

Power-connection terminal blocks (version with built-in battery)

View with terminal-block protection cover

removed

Q1 Q4S

Q3BP

Q5N

QF1

Power-connection terminal blocks (version with external battery)

Q1 Q4S

Q3BP

Q5N

(14) Terminal block for load output (15) Terminal block for Bypass AC input (16) Terminal block for Normal AC input

(17) Main earthing connector (18) Secondary earthing connector (auxiliary

cabinets)

(14) Terminal block for load output (15) Terminal block for Bypass AC input (16) Terminal block for Normal AC input

(17) Main earthing connector (22) Connection of external battery

(+/- poles) (18) Secondary earthing connector (auxiliary cabinets)

INTN card for auxiliary interconnections of parallel UPS units

19 20 21

XMS02 XMS03

XMS04 XMS05

XMS06 XMS07

1.3 Cabinet layout (normal or false floor)

33.5

70.5

33.5

712

590

170

Front

33.5

850

70.5

33.5

(19) DB9 connectors: exchange-current

information (20) Screw connectors: position information on Q5N, Q4S and Q3BP switches, from the external bypass (21) DB9 connectors: CAN communication information between UPSs

The four feet of the cabinet are cylindrical, 40

mm in diameter. The measurements opposite include cabinet siding (panels and door).

Cable-

running

zone

34001813EN/AE - Page 10

1.4 User-machine interface

1. Presentation

(30) Graphical display

(31) Load protected LED (32) Minor fault LED (33) Major fault LED

(34) Help key

(35) Function keys

(36) Menu key

1.5 Relay communication card

(38) OFF button

(37) ON button

(42) Load supplied LED

(40) UPS ON LED

(41) Operation on battery power LED

(43) Bypass in operation LED

(39) PFC ON LED

(50) Card cover screws

(51) Card screw holes

(52) Card cover

(53) Cable entry holes

(54) Output terminal block

(55) Input terminal block

(56) Cable clamping screws

34001813EN/AE - Page 11

2. Installation

2.1 Location

To ensure correct ventilation, leave nothing

0 - 600 mm*

>500 mm

on top of the UPS. Leave one meter of free space in front of the UPS for door opening. The cabinet rests on four cylindrical feet, 40 mm in diameter, positioned in the four corners of the cabinet to spread the weight.

If 500 mm of free space is not maintained

above the UPS, abnormal temperature rise

may occur.

The UPS must be installed in a room with

restricted access (qualified personnel only).

(*) The UPS can operate correctly back to the

wall, but it is preferable to leave some space for easier maintenance.

>1000 mm

2.2 Layout of cabinets

UPS cabinet

Battery cabinet

Battery cabinet 1

Battery cabinet 2

34001813EN/AE - Page 12

2.3 Removing the cardboard protecting the batteries

In the UPS

The cardboard protecting the batteries must always be removed once the equipment is installed in its final location.

s 3

2. Installation

1 - Remove the ties holding the cardboard (1).

2 - Remove the cardboard (2).

3 - Remove the struts (3).

In the external battery cabinet

The cardboard protecting the batteries must always be removed once the equipment is installed in its final location.

1 - Remove the battery support upright (1).

2 - Remove the ties holding the cardboard (2) (1000 mm external battery cabinet).

3 - Remove the cardboard protecting the batteries (3).

4 - Remove the ties holding the batteries (4).

2 3

34001813EN/AE - Page 13

2. Installation

2.4 Required protective devices and cable sizes

Recommended upstream protection

UPS power rating

20 kVA C60L - 50 A NS100N 4P-TM100A NS100N 4P-TM100A

30 kVA C60L - 63 A NS100N 4P-TM100A NS100N 4P-TM100A

40 kVA NS100N 3P-TM80A NS100N 4P-TM100A NS100N 4P-TM100A

60 kVA NS125E 3P-TM125A NS125E 4P-TM125A NS125E 4P-TM125A

80 kVA NS160N 3P-TM160A NS160N 4P-TM160A NS160N 4P-TM160A

100 kVA NS250N 3P-TM200A NS250N 4P-TM250A NS250N 4P-TM250A

120 kVA NS250N 3P-TM250A NS250N 4P-TM250A NS250N 4P-TM250A

The circuit breakers recommended above respect the requirements for discrimination with the UPS fuses

Upstream circuit-breaker on separate Normal AC input

Upstream circuit-breaker on separate Bypass AC input

Upstream circuit-breakers on common bypass and Normal AC input

Stick a label with the following text on each upstream circuit breaker: "Isolate Uninterrptible Power Supply (UPS) before working on this circuit".

Recommended downstream protection

UPS power rating Downstream

circuit breaker

20-30-40 kVA C60N C 16A

C60N B 25A

60 kVA C60N C 20A

C60N B 32A

80 kVA C60N C 25A

C60N B 50A

100-120 kVA C60N C 32A

C120N B 63A

NS100 TMG 50A

Note. See the simplified diagrams in the appendix for common or separate AC inputs, indicating the positions of the protection devices, the characteristics of the internal UPS fuses and UPS line currents under overload conditions.

Trip unit Curve N for the downstream circuit breaker

may be replaced by curve H or L, depending on the installation. The indicated protection ensures discrimination for each output circuit downstream of the UPS, whether supplied by via the normal or the Bypass AC source. If these recommendations are not followed, a short-circuit on an output circuit can result in a break in power longer than 20 milliseconds on all the other output circuits.

Earth-leakage current

UPS earth-leakage current is 1 A.

34001813EN/AE - Page 14

Required cable sizes

Cable sizes are determined for copper conductors (for aluminium conductors, increase the size by 30%). Size

calculations also take into account a voltage of 400 V and grouping of four cables.

2. Installation

UPS power rating

20 kVA 10 mm

30 kVA 16 mm

40 kVA 16 mm

60 kVA 25 mm

80 kVA 50 mm

100 kVA 50 mm

120 kVA 70 mm

Minimum sizes for separate Normal AC input copper cables (<100 m)

Minimum sizes for separate Bypass AC input copper cables (<100 m)

16 mm

25 mm

50 mm

70 mm

Connections are made to pre-drilled terminals. Hole diameter: 6.5 mm (8.5 mm for 120 kVA). Earthing cables connect to the earthing plate. Hole diameter: 6.5 mm (8.5 mm for 120 kVA).

Minimum sizes for common bypass and Normal AC input

Minimum sizes for copper loadcircuit cables (<100 m)

Battery/terminal connection (<15 m)

copper cables (<100 m)

16 mm

25 mm

50 mm

70 mm

16 mm

25 mm

50 mm

70 mm

16 mm

25 mm

35 mm

70 mm

95 mm

2 x 50 mm

2 x 70 mm

34001813EN/AE - Page 15

2. Installation

Required cable sizes for parallel UPS installations with an external bypass

Rated power of each UPS unit

20 kVA 2

30 kVA 2

40 kVA 2

60 kVA 2

80 kVA 2

Number of parallel UPS units

3 4

Total rated power of the UPS

40 kVA 60 kVA 80 kVA

60 kVA 90 kVA 120 kVA

80 kVA 120 kVA 160 kVA

120 kVA 180 kVA 240 kVA

160 kVA 240 kVA 320 kVA

Bypass AC input or load line current

58 A 87 A 116 A

80 A 129 A 172 A

116 A 174 A 232 A

174 A 261 A 348 A

232 A 348 A 464 A

Cable

(1)

size in mm

16 35 50

25 50 70

35 70 120

70 150 185

120 185 2 x 120

The table opposite is an example for an

installation with up to four UPS units.

◗ For installations with redundant units, take

into account only the number of units required to supply the loads (e.g. in a three-unit installation where one unit is redundant, only two units count in determining the input and load currents).

◗ This table is valid for 400 V input and load

phase-to-phase voltages, at rated load with a power factor of 0.8. For voltages of 380 or 415 V, multiply the current values by 1.05 or

0.96 respectively and, if necessary, modify the cable sizes accordingly.

◗ The cable sizes in this table concern the bold

sections in the diagram below.

(1) Cable sizes are determined for U1000 R02V type copper conductors (for aluminium conductors, increase the size by 30%). Size calculations also take into account a voltage of 400 V and grouping of four cables.

100 kVA 2

120 kVA 2

Bypass AC

200 kVA 3 4

300 kVA

400 kVA

240 kVA 3 4

360 kVA

480 kVA

288 A 432 A 576 A

348 A 522 A 696 A

150 2 x 95 2 x 150

185 2 x 150 2 x 185

External bypass

Bypass AC

Normal AC

Bypass AC

Normal AC

Bypass AC

Normal AC

GALAXY 5000

Load

34001813EN/AE - Page 16

2.5 2.5 System earthing arrangements

This chapter lists the main system earthing arrangements and their wiring requirements. For system earthing arrangements which are not listed in this document, please refer to the “SEA guide” reference 34002636XT..

TNS upstream and TNS downstream installation

For separate Normal AC and Bypass AC lines from a single source.

With differential circuit breaker:

The Normal and Bypass AC lines must be galvanically isolated

Upstream differential protection rating must be at least 3A

2. Installation

L1 L2 L3

Bypass AC

Normal AC

MLVS

L1 L2 L3

Without differential circuit breaker:

L1 L2 L3

Bypass AC

PFC

INV

UPS

L1 L2 L3 N

Load

MLVS

Normal AC

L1 L2 L3

UPS

34001813EN/AE - Page 17

2. Installation

TNC upstream, TNS downstream

For separate Normal AC and Bypass AC lines from a single source

1.the UPS internal PEN bar must be connected to the Q4S neutral upstream of Q4S

2.The UPS internal PEN bar must be connected to the Q5N neutral downstream of Q5N

3.The UPS internal PE bar must be transformed into a PEN bar (cables supplied for TNC options)

L1 L2 L3

Bypass AC

PEN

Normal AC

MLVS

PFC

L1 L2 L3

Installation with upstream IT and downstream TNS

For separate Normal AC and Bypass AC lines from a single source

Bypass AC

L2 L3 N

PEN

INV

UPS

L1 L2 L3 N

Load

INV

CPI2

UPS

MLVS

Normal AC

CPI

PFC

L1 L2 L3

Installation with upstream TT and downstream TT (with upstream differential protection)

For separate Normal AC and Bypass AC lines from the same source

The upstream differential protection rating must be at least 3A

UPS

L1 L2 L3 N

Load

Bypass AC

Normal AC

L1 L2 L3 N

L1 L2 L3

PFC

INV

34001813EN/AE - Page 18

MLVS

Frequency converter (without Bypass AC input)

The UPS installation may be equipped with earth-leakage protection upstream on the condition that the protection apply to:

- the normal and Bypass AC inputs

- all the parallel-connected UPSs.

Upstream and downstream: TT, TN or IT system with neutral distributed

2. Installation

Main lowvoltage switchboard (MLVS)

Normal AC

Load

Upstream and downstream: Neutral not distributed

Main lowvoltage switchboard (MLVS)

Normal AC

Load

Parallel configuration without external bypass cabinet and with common normal and Bypass AC inputs (maximum two units in parallel)

The UPS installation may be equipped with earth-leakage protection upstream on the condition that the protection apply to:

- the normal and Bypass AC inputs

- all the parallel-connected UPSs.

The requirements for the different system earthing arrangements (SEA) are similar to those for single UPS configurations. In the diagrams on page 17, simply replace the single UPS units between points A and B by the following parallel configuration.

Bypass AC

Normal AC

Bypass AC

Normal AC

34001813EN/AE - Page 19

2. Installation

Parallel configuration without external bypass cabinet and with separate normal and Bypass AC inputs (maximum two units in parallel)

The UPS installation may be equipped with earth-leakage protection upstream on the condition that the protection apply to:

- the normal and Bypass AC inputs

- all the parallel-connected UPSs.

The requirements for the different system earthing arrangements (SEA) are similar to those for single UPS configurations. In the diagrams on page 18, simply replace the single UPS units between points A, B and C by the following parallel configuration.

Bypass AC

Normal AC

Bypass AC

Normal AC

34001813EN/AE - Page 20

2. Installation

Parallel UPS with external bypass cabinet and separate Normal and Bypass AC network inputs (6 UPS in parallel for 4PN)

The UPS installation may be equipped with earth-leakage protection upstream on the condition that the protection apply to:

- the normal and Bypass AC inputs

- all the parallel-connected UPSs.

The standard diagrams presented below may be adapted to your needs by qualified personnel.

Q3BP

Q4S

Bypass AC

Normal AC

Bypass AC

Normal AC

Bypass AC

Normal AC

Bypass AC

Q5N

Normal AC

Connection for the Bypass AC input and the output cables to the external bypass cabinet must use cables having the same

length and size to ensure correct balancing of the Bypass AC input currents.

34001813EN/AE - Page 21

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