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 MGETM GalaxyTM 5000 range has been designed with the utmost care.

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

APC by Schneider Electric pays great attention to the environmental impact of its products.

Measures that have made MGETM GalaxyTM 5000 a reference in environmental protection include:

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 MGETM GalaxyTM 5000 at the end of its service life.

To discover the entire range of APC by Schneider Electric products and the options available for the MGETM GalaxyTM 5000 range, we invite you to visit our web site, www.apc.com, or contact your local APC by Schneider Electric representative.

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

"MGETM GalaxyTM 5000 Installation and user manual no. 3400181300".

34001813EN/AE - Page 2

Safety

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.

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

Other cables

E

S

C

D

E

L

VOLT

Vertical selection
Other selection	17

mai

Enter / Confirm

Event scroll in log

Page scroll in log

Fast forward

Forward

0101

1010

0101

Details

Circular menu

Graphical display

Return to previous display

Delete

Access to measurements

Buzzer off

Move up or down one page

Event selection in log by date and time

Increase

Decrease

Save

Alarm

Status conditions

Settings

Maintenance

Control

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 MGETM GalaxyTM 5000

UPS cabinet

~
	?
I	O
	3s

~
	?
I	O
	3s

External battery cabinet / auxiliary cabinet

Dimensions

	UPS power		Dimensions
	rating (kVA)		(H x W x D)
	20/30/40/60		1900 x 712 x 850 mm
	without battery
	80/100/120		1900 x 712 x 850 mm
	without battery
	20/30/40/60/80		1900 x 1112 x 850 mm
	with internal
	battery
	Weight in kg (UPS without battery or with
	built-in battery)
	Backup	UPS power rating (kVA)
	time
		20	40	60	80	100
		30				120
	Without	400	400	400	520	520
	battery
	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	1900 x 712 x 850 mm
	mm (empty)	135 kg
	Cabinet	1900 x 1012 x 850 mm
	1000 mm	150 kg
	wide
	(empty)
	Weight in kg (cabinet alone)
	Backup	UPS power rating (kVA)
	time
		40	60	80	100	120
	5 min				885	980
	10 min			885	1142	1307
	15 min		885	1142	1307	1764
	30 min	882	1307	1764	2439	2742

Weights highlighted in grey are for double cabinets.

34001813EN/AE - Page 8

1. Presentation

1.2 Inside the UPS cabinet, access to connections

Example of version with built-in battery

Q1	Q4S	Q3BP	Q5N
	QF1

Simplified diagram of power connections

(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

(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)

			Q3BP
Bypass AC	15	Q4S
Normal AC	Q1	FU	FU		Load
				Q5N
	16	PFC			14
		22
			QF1

Battery cabinet

34001813EN/AE - Page 9

1. Presentation

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

Q1	Q4S	Q3BP	Q5N
	QF1

View with terminal-block protection cover removed

(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)

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

(22) Connection of external battery (+/- poles)

(18) Secondary earthing connector (auxiliary cabinets)

INTN card for auxiliary interconnections of parallel UPS units

	19	20	21
	XMS04	XMS05
XMS02	XMS03	XMS06	XMS07

(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

1.3 Cabinet layout (normal or false floor)

33.5	712	33.5
33.5		33.5
	590
		850
		Cable-
	170	running
		zone
70.5		70.5
33.5	Front	33.5
34001813EN/AE - Page 10

The four feet of the cabinet are cylindrical, 40 mm in diameter.

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

1. Presentation

1.4 User-machine interface

	(30)	Graphical display
	(31)	Load protected LED
	(32)	Minor fault LED
	(33)	Major fault LED
~
?	(34) Help key
	(35)	Function keys
	(36)	Menu key
I O	(38)
		OFF button
3s	(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

1.5 Relay communication card

(50) Card cover screws

(51) Card screw holes

(52) Card cover

(53) Cable entry holes

(54) Output terminal block

		3	4	5	6
1	2
BA

(55) Input terminal block

(56) Cable clamping screws

34001813EN/AE - Page 11

2. Installation

2.1 Location

		>500	mm
0 - 600 mm*

~
	?
I	O
	3s

>1000 mm

To ensure correct ventilation, leave nothing 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.

2.2 Layout of cabinets

UPS cabinet

~

?

I	O
	3s

UPS cabinet

~

?

Battery cabinet

Battery cabinet 1	Battery cabinet 2

I	O
	3s

34001813EN/AE - Page 12

2. Installation

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.

~
	?
I	O
	3s

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

2 - Remove the cardboard (2).

3 - Remove the struts (3).

1

2

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).
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

4

34001813EN/AE - Page 13

2. Installation

2.4 Required protective devices and cable sizes

Recommended upstream protection

UPS	Upstream circuit-breaker on	Upstream circuit-breaker on	Upstream circuit-breakers on
power	separate Normal AC input	separate Bypass AC input	common bypass and Normal AC
rating			input
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

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	Trip unit	Curve N for the downstream circuit breaker
		circuit breaker		may be replaced by curve H or L, depending
				on the installation.
	20-30-40 kVA	C60N	C 16A
				The indicated protection ensures
		C60N	B 25A	discrimination for each output circuit
				downstream of the UPS, whether supplied by
	60 kVA	C60N	C 20A
				via the normal or the Bypass AC source. If
				these recommendations are not followed, a
		C60N	B 32A
				short-circuit on an output circuit can result in
	80 kVA	C60N	C 25A	a break in power longer than 20 milliseconds
				on all the other output circuits.
		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.

Earth-leakage current

UPS earth-leakage current is 1 A.

34001813EN/AE - Page 14

2. Installation

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.

UPS power	Minimum sizes for	Minimum sizes for	Minimum sizes	Minimum sizes	Battery/terminal
rating	separate Normal AC	separate Bypass	for common	for copper load-	connection
	input copper cables	AC input copper	bypass and	circuit cables	(<15 m)
	(<100 m)	cables (<100 m)	Normal AC input	(<100 m)
			copper cables
			(<100 m)
20 kVA	10 mm2	16 mm2	16 mm2	16 mm2	16 mm2
30 kVA	16 mm2	16 mm2	16 mm2	16 mm2	25 mm2
40 kVA	16 mm2	16 mm2	16 mm2	16 mm2	35 mm2
60 kVA	25 mm2	25 mm2	25 mm2	25 mm2	70 mm2
80 kVA	50 mm2	50 mm2	50 mm2	50 mm2	95 mm2
100 kVA	50 mm2	70 mm2	70 mm2	70 mm2	2 x 50 mm2
120 kVA	70 mm2	70 mm2	70 mm2	70 mm2	2 x 70 mm2

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).

34001813EN/AE - Page 15

2. Installation

Required cable sizes for parallel UPS installations with an external bypass

Rated	Number of	Total rated	Bypass AC	Cable
power of	parallel	power of	input or	size(1)
each UPS	UPS units	the UPS	load line	in mm2
unit			current
20 kVA	2	40 kVA	58 A	16
	3	60 kVA	87 A	35
	4	80 kVA	116 A	50
30 kVA	2	60 kVA	80 A	25
	3	90 kVA	129 A	50
	4	120 kVA	172 A	70
40 kVA	2	80 kVA	116 A	35
	3	120 kVA	174 A	70
	4	160 kVA	232 A	120
60 kVA	2	120 kVA	174 A	70
	3	180 kVA	261 A	150
	4	240 kVA	348 A	185
80 kVA	2	160 kVA	232 A	120
	3	240 kVA	348 A	185
	4	320 kVA	464 A	2 x 120
100 kVA	2	200 kVA	288 A	150
	3	300 kVA	432 A	2 x 95
	4	400 kVA	576 A	2 x 150
120 kVA	2	240 kVA	348 A	185
	3	360 kVA	522 A	2 x 150
	4	480 kVA	696 A	2 x 185

External bypass

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.

	Bypass AC
		GALAXY 5000
	Normal AC
		1

	Bypass AC	Bypass AC		Load
			GALAXY 5000
		Normal AC
			2
		Bypass AC
			GALAXY 5000
		Normal AC
			3

34001813EN/AE - Page 16

2. Installation

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

		PE		PE
	L1		L1
	L2	SS	L2
	L3		L3	Load
Bypass AC	N		N
PE		PFC	INV
Normal AC	L1
	L2		UPS
	L3
MLVS
Without differential circuit breaker:
		PE		PE
	L1		L1
	L2	SS	L2
				Load
	L3		L3
Bypass AC	N		N
PE		PFC	INV
Normal AC	L1
	L2		UPS
	L3
MLVS

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)

		PEN		PE
	L1		L1
	L2	SS	L2	Load
	L3		L3
Bypass AC	N		N
PEN
		PFC	INV
PEN
Normal AC	L1
	L2		UPS
	L3

MLVS

Installation with upstream IT and downstream TNS

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

		PE		PE
	L1		L1
	L2	SS	L2
R1				Load
	L3		L3
Bypass AC	N		N
	PFC		INV
R2				CPI2
Normal AC	L1
	L2		UPS
	L3
MLVS
CPI

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

		PE
	L1		L1
	L2	SS	L2
	L3		L3	Load
Bypass AC	N		N
	PFC		INV
Normal AC	L1
	L2		UPS
	L3

MLVS

34001813EN/AE - Page 18

2. Installation

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
Main low-	15
voltage
switchboard
(MLVS)
	16	14	Load
	Normal AC
Upstream and downstream: Neutral not distributed
Main low-	15
voltage
switchboard
(MLVS)
	16	14	Load
	Normal AC

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.

A

Bypass AC

15

16

14

Normal AC

Bypass AC

15

B

16

14

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.

A

B

Bypass AC
15
16	14
Normal AC

Bypass AC
15
16	14
Normal AC

C

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.

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.

Q3BP

Q4S

A

B	Q5N	C

B

B

B

Bypass AC
15
16	14
Normal AC
Bypass AC
15
16	14
Normal AC
Bypass AC
15
16	14
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