APC MGE GALAXY 9000 User Manual

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MGETM GalaxyTM 9000

50, 60 Hz

800 - 900 kVA

User manual

Single-unit UPS

Modular UPS

Parallel UPS with SSC

Frequency converter

Static Switch Cubicle

34006452EN/AC - Page 2

 

 

Contents

1. Introduction

 

1.1

System performance ...................................................................................................................

5

1.2

System description ......................................................................................................................

5

1.3

Different types of MGETM GalaxyTM 9000 systems .................................................................

6

1.4

Isolation and protection devices .................................................................................................

8

 

UPS or converter cubicles (figure 8) ...............................................................................................................

8

 

Static Switch Cubicle (figure 9) .......................................................................................................................

8

 

External maintenance bypass cubicle (figure 10) ............................................................................................

9

1.5

Main operating modes ..................................................................................................................

9

 

Normal operation .............................................................................................................................................

9

 

Operation with Mains 1 down (figure 12) .......................................................................................................

10

 

Battery time ....................................................................................................................................................

10

 

Operation with Mains 1 restored (figure 13) ..................................................................................................

11

 

Installation with an engine generator set (figure 15) ...................................................................................

12

 

Output voltage quality and continuity .............................................................................................................

13

2. Description of MGETM GalaxyTM 9000 cubicles

 

2.1

Inverter cubicle ..........................................................................................................................

14

2.2

Static Switch Cubicle ................................................................................................................

15

2.3

External maintenance bypass cubicle ....................................................................................

15

3. Control panel

 

3.1

Visible control panel ..................................................................................................................

17

3.2

Hidden control panel .................................................................................................................

20

4. Start-up

 

4.1

System start-up ...........................................................................................................................

23

 

Single-unit or modular UPS ...........................................................................................................................

23

 

Multi-bypass modular UPS ............................................................................................................................

24

 

Modular UPS with external maintenance bypass ..........................................................................................

25

 

Frequency converters ....................................................................................................................................

26

 

Parallel UPS systems with a Static Switch Cubicle ........................................................................................

27

4.2

Start-up of a unit .........................................................................................................................

27

 

Start-up of a rectifier/charger .........................................................................................................................

27

 

Start-up of an inverter ....................................................................................................................................

27

5. Shutdown

 

5.1

Shutdown of a unit ......................................................................................................................

28

 

Shutdown of an inverter .................................................................................................................................

28

 

Shutdown of an rectifier/charger ....................................................................................................................

29

5.2 System shutdown .......................................................................................................................

29

 

Single-unit or single modular UPS .................................................................................................................

29

 

Modular UPS with external maintenance bypass ..........................................................................................

30

 

Multi-bypass modular UPS .............................................................................................................................

30

 

Frequency converters (no Mains 2) ..............................................................................................................

30

 

Parallel UPSs with SSC (with Mains 2) ..........................................................................................................

31

5.3

Buzzer reset ................................................................................................................................

31

6. Alarms

 

6.1

Maintenance bypass ..................................................................................................................

32

7. Environment information

 

7.1

Standard information Media Contacts 9 ..................................................................................

33

 

Signal reception .............................................................................................................................................

33

 

Signal transmission ........................................................................................................................................

33

 

 

34006452EN/AC - Page 3

Contents

7.2 "LED" signalling box (optional) ..................................................................................................

34

7.3 Additional information "Media Contacts 15" ..........................................................................

34

Signal reception .............................................................................................................................................

35

Signal transmission .......................................................................................................................................

35

8. Maintenance

8.1

Maintenance configuration .........................................................................................................

36

 

Single-unit or single modular UPS (figure 25) ..............................................................................................

36

 

Multi-bypass modular UPS (figure 26) .........................................................................................................

36

 

Modular UPS with external maintenance bypass (figure 27) ........................................................................

37

 

Frequency converter or parallel UPS with SSC (figure 28) ............................................................................

38

 

Static Switch Cubicle (figure 29) .....................................................................................................................

38

8.2

Battery maintenance ..................................................................................................................

39

8.3

Autodiagnostics ..........................................................................................................................

39

8.4

Visual check ................................................................................................................................

39

8.5

Functional check ........................................................................................................................

39

8.6

Training centres ...........................................................................................................................

40

9. "Monitor" alphanumeric display

9.1

General ........................................................................................................................................

41

 

Display ...........................................................................................................................................................

41

9.2

Control panel ...............................................................................................................................

42

9.3

Lights 1 to 8 .................................................................................................................................

43

9.4

Alarm display and buzzer reset .................................................................................................

44

 

List of general alarms ....................................................................................................................................

44

 

List of secondary alarms ...............................................................................................................................

45

9.5

Measurement system .................................................................................................................

50

9.6

Voltage measurements ...............................................................................................................

51

9.7

Current measurements ..............................................................................................................

52

9.8 Frequency and power measurements ......................................................................................

53

9.9

Battery measurements ...............................................................................................................

54

9.10 Inverter On/Off commands ......................................................................................................

56

9.11 Language, display contrast and buzzer volume settings .....................................................

57

9.12 Display system configuration ..................................................................................................

58

10. Options

10.1

"LED" signalling box ................................................................................................................

59

10.2

"Tele-Monitor" remote indications unit ..................................................................................

59

10.3

"GTC link" communications system .......................................................................................

59

10.4

"Vision" display ........................................................................................................................

60

10.5

"Remote vision" display ..........................................................................................................

60

10.6

Insulating and Mains 1, Mains 2 and load voltage matching transformer ...........................

60

10.7

Double bridge rectifier-charger ...............................................................................................

61

10.8

Battery "Temperature Monitor" ...............................................................................................

61

10.9

Empty cubicles ........................................................................................................................

61

34006452EN/AC - Page 4

1. Introduction

1.1 System performance

A MGETM GalaxyTM 9000 uninterruptible power supply (UPS) delivers 3-phase power with the following characteristics:

stable voltage (±0.5 % under steady state conditions and +/-5% under transient conditions for load step changes of 25 to 100 % or of 100 to 25 %);

stable frequency (±0.05Hz without Mains 2);

or frequency synchronized with Mains 2 to 50/60 Hz ±2 Hz (value may be configured in 0.25 Hz steps);

free of micro-breaks and outages for the duration of the battery time (10, 15 or 30 minutes);

less than 4 % distortion in all system configurations with linear loads;

less than 5 % distortion for a 100 % non-linear load with a peak factor of up to 3.5.

The acoustic noise level of a MGETM GalaxyTM 9000 UPS is under 75 dBA.

Single-line diagram of the MGETM GalaxyTM 9000 system

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

maintenance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

bypass

 

 

 

 

 

mains 2

 

 

 

 

 

 

 

 

 

 

 

 

 

isolation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(bypass input)

 

 

 

isolation

 

 

 

 

emergency

 

and

 

 

load

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

protection

 

 

 

 

 

 

 

 

 

 

 

bypass

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mains 1

 

isolation

AC/DC

 

 

DC/AC

 

 

 

 

 

 

and

conversion

 

 

conversion

 

 

 

 

 

(normal input)

 

protection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

isolation and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

protection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.2System description

a rectifier-charger (RC) module converts 3-phase AC power from the Mains 1 supply into DC power for the normal inverter input and float charges or recharges the batteries;

a battery unit provides backup power for the inverter in the event of a voltage drop or a Mains 1 failure;

an inverter module converts the DC power supplied by the rectifier-charger module or the battery unit into 3-phase AC power for the load;

an emergency bypass module ensures the instantaneous transfer of the load via the static switch to the Mains 2 bypass line in the event of an inverter shutdown (initiated by the user or by a protective device) or a sudden overload;

a maintenance bypass which isolates the UPS for maintenance and transfers the load without interrupting the supply of power. The maintenance bypass is made up of three manual switches.

Note:

the Mains 1 normal input and the Mains 2 bypass input have different functions and, depending on the installation, may be protected differently upstream and/or come from different sources;

frequency converters are available without backup batteries;

the emergency bypass line and the maintenance bypass line do not exist in installations where the load frequency and the Mains 2 frequency are different (for example in frequency converters);

for reasons of redundancy and/or increased power, the rectifier-charger, inverter and battery modules (the UPS, part A in the MGETM GalaxyTM 9000 schematic diagram above) may be arranged in parallel lines. In this case, an isolation function is added to the output of each UPS for maintenance without disrupting the load.

In this type of system, the components of part B in the diagram are located in a separate cubicle referred to as the "Static Switch Cubicle".

The system may also include:

an isolating transformer on the Mains 2 line;

a harmonics filter on the Mains 1 input;

different remote control, indication and display systems;

a double bridge rectifier-charger module.

34006452EN/AC - Page 5

Introduction

1.3Different types of MGETM GalaxyTM 9000 systems

Single-unit or modular UPS: (figure 1)

Q3BP

static switch

mains 2

 

rectifier-

inverter

charger

mains 1

load

 

battery

Fig. 1

– Multi-bypass modular UPSs: (figure 2)

Note:

2 modular UPSs (identical ratings) can be parallel-connected in this way.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q3BP

static switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mains 2

 

 

rectifier-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

inverter

 

 

 

 

 

 

 

 

 

charger

 

 

 

 

 

 

 

mains 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

 

 

load

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q3BP

static switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mains 2

 

 

rectifier-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

inverter

 

 

 

 

 

 

 

 

 

charger

 

 

 

 

 

 

 

mains 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 2

– Modular UPSs with external maintenance bypass: (figure 3)

Note:

Up to 4 UPS (identical ratings) can be parallel-connected.

 

 

 

 

Q3BP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

static switch

 

 

 

mains 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

rectifier-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

inverter

 

 

 

 

 

 

charger

 

 

 

 

 

mains 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

 

 

load

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

static switch

 

 

 

mains 2

 

 

 

 

Q5N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

rectifier-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

inverter

 

 

 

 

 

 

charger

 

 

 

 

 

mains 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 3

34006452EN/AC - Page 6

Introduction

– Frequency converter with battery backup power: (figure 4)

rectifier-

inverter

charger

mains 1

load

 

battery

Fig. 4

– Frequency converter without backup power: (figure 5)

rectifier-

inverter

charger

mains 1

load

Fig. 5

– Frequency converters with backup power: (figure 6)

rectifier-

inverter

charger

 

battery

rectifier-

inverter

charger

mains 1

load

 

battery

rectifier-

inverter

charger

 

battery

Fig. 6

– Parallel UPSs with SSC: (figure 7)

Note:

Up to 6 UPS (identical ratings) can be parallel-connected in this way.

 

 

 

 

Q3BP

 

 

 

 

 

 

 

mains 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Static Switch Cubicle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

rectifier-

 

inverter

 

 

 

 

 

 

 

charger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

 

 

 

mains 1

 

 

 

 

 

 

 

 

 

 

 

 

load

 

 

 

rectifier-

 

inverter

 

 

 

 

 

 

 

 

 

 

 

 

charger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

Fig. 7

34006452EN/AC - Page 7

Introduction

1.4 Isolation and protection devices

UPS or converter cubicles (figure 8)

Q1 (switch): isolation from Mains , RC start-up;

QF1 (circuit breaker):

battery protection and isolation;

Q5N (switch):

isolation of the inverter, frequency converter or static switch module from the load;

Q4S (switch):

isolation of the static switch from Mains 2;

Q3BP (switch):

bypass switch for maintenance;

FU1-2-3 (fuses):

protection of the RC from Mains 1;

FU5-6-7 (fuses):

protection of the inverter from the load.

Note:

switches Q4S and Q3BP do not exist on frequency converters,

circuit breaker QF1 does not exist on frequency converters without a battery.

Example of a single-unit UPS or single modular UPS

Q3BP

 

 

 

 

 

Q4S

static switch

mains 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

rectifier-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

inverter

Q1

charger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q5N

 

 

 

 

 

 

 

 

 

 

 

mains 1

 

 

 

 

 

 

 

 

 

 

 

 

 

load

 

 

 

 

 

 

 

 

 

 

 

 

 

FU1-2-3

 

 

QF1

 

 

 

FU5-6-7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

battery

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 8

Static Switch Cubicle (figure 9)

Q4S (switch) :

isolation of the static switch (and mechanical contactor K2S) from Mains 2;

Q3BP (switch) :

bypass switch for maintenance;

Q5N (switch) :

isolation of the load from the parallel UPSs;

Q1 (fuse switch) :

protection of the cubicle control electronics from the parallel-connected inverter outputs;

Q2 (fuse switch) :

protection of the cubicle control electronics from Mains 2.

 

Q3BP

 

static switch

mains 2

Q4S

 

parallel

Q5N

load

UPSs

 

Q2

 

Q1

control

 

electronics

Fig. 9

34006452EN/AC - Page 8

Introduction

External maintenance bypass cubicle (figure 10)

Q3BP (switch) :

bypass switch for maintenance;

Q5N (switch) :

isolation of the load from the parallel-connected UPSs.

maintenance

 

Q3BP

 

 

bypass line

 

 

parallel

 

Q5N

 

load

 

modular UPSs

 

 

 

 

 

Fig. 10

1.5 Main operating modes

Normal operation

Mains 1 power is available: (see figure 11).

The green "load protected" light 5 on the control panel is on.

!

!

légend :

+ –

5

off on

IO

The power necessary for the load is provided by Mains 1 through the rectifier-charger and the inverter. The rectifier-charger also supplies the power to float charge and recharge the battery (1).

The rectifier-charger output voltage (DC) is regulated for the different battery types and charging modes:

vented lead-acid or Ni/Cd batteries: two different voltages, one for float charging and one for recharging;

sealed lead-acid batteries: a single voltage for both charge functions.

The voltages depend on the number of battery cells and the battery manufacturer. They can be factory set and are adjustable by the after-sales support technicians.

An optional electronic board may be used to continuously measure the battery temperature and automatically adjust the voltages.

Parallel UPS systems:

the power drawn by the load is equally shared between the different UPSs.

(1) Except for frequency converters without a battery

 

static switch

mains 2

 

rectifier-

inverter

charger

mains 1

load

 

battery

Fig. 11

34006452EN/AC - Page 9

Introduction

Operation with Mains 1 down (figure 12)

In the event of a Mains 1 failure or Mains 1 voltage outside specified tolerance of –10 % in amplitude (–15 % optionally), the rectifier-charger stops and the battery supplies the necessary backup power to the load via the inverter. The battery, floatconnected between the rectifier-charger and the inverter, discharges during this operating mode.

The green "load protected" light 5 on the control panel is on.

The user is warned of battery operation by a buzzer and the orange "load on battery" light 4 on the control panel.

beep...beep...

!!

+ –

IO

45

This information is also available via volt-free changeover contacts for remote control devices.

In this case, there is a 30 seconds delay.

Note:

In the event of a Mains 1 failure, frequency converters without a battery shut down and the load is no longer supplied.

 

static switch

mains 2

 

rectifier-

inverter

charger

mains 1

load

 

battery

Fig. 12

Battery time

The available battery time during a Mains 1 outage depends on the:

rated capacity of the battery;

power consumed by the load;

temperature of the battery;

age of the battery.

The specified battery time corresponds to a minimum duration at full rated load.

The actual backup time can therefore be greater if the system operates below its full rated load during the Mains 1 outage. Operation on battery power can be extended beyond the specified time by reducing the load power consumption

(by disconnecting non-critical loads).

A "low battery shutdown" warning signal is sent via volt-free changeover contacts for remote control devices when the battery voltage reaches a level slightly above the minimum level. This signal warns the user of the imminent end of battery power. On the device itself, the buzzer beeps increasingly rapidly and loudly.

Battery power stops when the voltage supplied by the battery reaches the voltage minimum (340 V). This results in inverter shutdown and transfer of the load without interruption to Mains 2. The red "load not protected" light 2 on the control panel is on.

beep...beep...

!!

+ –

IO

2

If Mains 2 also fails, the load is no longer supplied. Normally, the inverter shuts down when the time on the battery power exceeds three times the specified backup time.

Note:

As an optional function (battery time estimator), the "low battery shutdown" warning signal can be sent with an adjustable time delay prior to the effective end of battery power.

34006452EN/AC - Page 10

Introduction

Operation with Mains 1 restored (figure 13)

When Mains 1 power is restored or its voltage returns to within specified tolerances, the system automatically returns to its normal operating mode described above (on the condition it did not reach the end of battery power).

If the end of battery power was reached (with the resulting inverter shutdown), the RC restarts automatically, but the inverter must be restarted manually, either locally or remotely in systems equipped with a remote-control unit.

The rectifier-charger recharges the battery which was discharged during the Mains outage.

Note:

In frequency converters without battery power, the return of Mains 1 power results in the automatic restart of the RC and the inverter.

Battery charge cycle

 

static switch

mains 2

 

rectifier-

inverter

charger

mains 1

load

 

battery

Fig. 13

The battery charge cycle takes place in two steps (see figure 14):

step 1: the battery is recharged at a constant current limited to 0.1C10 (i.e. 1/10th of the battery capacity specified for a 10 hour discharge). The DC voltage increases with the battery charge until the charge level is reached;

step 2: the battery is recharged at constant voltage equal to the charge level (maximum value 463 V).

The charging current gradually decreases until reaching a specified low value (floating current).

For vented lead-acid batteries, the rectifier-charger supplies the charging voltage for 0 to 255 hours (parameter defined by the after-sales support department) and then the floating voltage. For sealed lead-acid batteries, the charging and floating voltages are the same.

Note:

If the Mains 1 failure is shorter than 0 to 255 seconds (parameter defined by the after-sales support department), the charger does not initiate a complete charge cycle but automatically supplies the floating voltage.

U/I

voltage

U charge/floating

 

 

(sealed batteries)

 

 

 

U "floating"

 

 

 

(vented batteries)

 

 

0.1 C10

 

 

 

 

current

 

 

 

 

 

 

 

 

current

constant voltage

 

t

 

limiting

decreasing current

 

 

Fig. 14

34006452EN/AC - Page 11

Introduction

Installation with an engine generator set (figure 15)

If a stand-by generator is included in the installation, it is generally started automatically in the event of a Mains failure and connected to the main low voltage switchboard.

It is disconnected when Mains power is restored.

With such a system, the required battery time may be reduced to the time necessary for starting and bringing on line the stand-by generator.

The battery supplies power to the inverter during the transfers: Mains - generator and generator - Mains.

The transfer sequences described: Mains - battery - generator and generator - battery - Mains are fully automatic. They in no way affect the load and require no manual operation by the user.

Note:

To avoid load surges on the generator, the rectifier/charger is started with a 10 second maximum current consumption walk-in.

Example of an installation with an engine generator set

generator

G

HV network

main LV

switchboard

Galaxy

mains 2

mains 1

Fig. 15

UPS shutdown or overload (systems with a static switch module) (figure 16)

Single-unit UPSs, modular UPSs or UPSs with an SSC:

– in the event of a UPS shutdown (initiated by the user or by an internal protective device), the load is automatically transferred to the Mains 2 bypass line. If transfer conditions are correct, transfer takes place instantly, without interruption to the load.

Note:

Transfer conditions are not correct when Mains 2 characteristics are outside tolerances (voltage: ±10 %; frequency as per personalization; phase sync with inverter ±3°);

in the event of a major transient overload (greater than 160 % of the full load), immediate transfer takes place as above, without interruption to the load.

When the overload disappears, the load is automatically returned to the inverter depending on the configured value of the re-transfer counter: no return to inverter, or 1 to 255 (personalized value) overloads accepted before the load is permanently transferred to Mains 2. This operating mode allows start-up of load devices causing high inrush currents.

This system requires correct transfer conditions. If the conditions are not correct, the inverter will current limit to 150 % of its rated current for 1 second before stopping;

in the event of a small but extended overload (i.e. a continuous level of power exceeding the full rated load), the inverter will continue to supply power for a period depending on the magnitude of the overload (10 minutes for a 125 % overload, 1 minute for a 150 % overload). See figure 17 (Overload curve);

in all three of the above cases, the inverter shutsdown and supplies the load via Mains 2 with the following information on the control panel:

green "load protected" light

5

off,

– buzzer 1 on,

 

 

red "load not protected" light

2

on.

beep...beep...

!

!

+ –

1 2

IO

 

static switch

mains 2

 

rectifier-

inverter

charger

mains 1

load

battery

Fig. 16

34006452EN/AC - Page 12

Introduction

Frequency converters without redundancy

in the event of a shutdown, the load is no longer supplied with power;

in the event of a major transient overload (greater than 160 % of the rated load), the inverters will current limit to 160 % of their rated current for 1 second before stopping;

in the event of a small but extended overload (i.e. a continuous level of power exceeding the full rated load), the inverters will continue to supply power for a period depending on the magnitude of the overload (10 minutes for a 125 % overload,

1 minute for a 150 % overload, see figure 17), and then stop;

in all three of the above cases, inverter shutdown results in the following on the control panel of the concerned unit:

green "load protected" light

5

off,

– buzzer 1 on,

 

 

red "load not protected" light

2

on.

Frequency converters with redundancy

– the shutdown of one unit is of no consequence for the load. The other lines each take up an equal amount of load power and the load continues to be supplied normally;

Inverter shutdown results in the following on the control panel of the concerned unit:

green "load protected" light

5

off,

– buzzer 1 on,

 

 

red "load not protected" light

2

on.

– in the event of an overload, the system only loses its redundancy as long as the overload is less than the total rated power of the functioning units. If the overload is greater, the operating mode is that previously described for systems without redundancy.

Overload curve

 

I

 

 

 

 

 

 

 

 

 

 

 

 

1,5

In

 

 

 

 

 

 

 

 

 

 

 

 

1,35

In

 

 

 

 

 

 

 

 

 

 

 

 

1,25

In

 

 

 

 

 

 

 

 

 

 

 

 

1,10

In

 

 

 

 

 

 

 

 

 

 

 

 

1,05

In

 

 

 

 

 

 

 

 

 

 

 

 

 

In

 

 

 

 

 

 

 

 

 

 

 

t (minutes)

 

1

2

3

4

5

6

7

8

9

10

30

120

Fig. 17

Output voltage quality and continuity

The output voltage is stable in amplitude and frequency and is free of interruptions or transients outside specified tolerances, irrespective of Mains 1 or load disturbances (outages, load step changes, etc.).

Steady state voltage regulation:

For stable or slowly varying load conditions, the inverter output voltage is regulated to within ±0.5 % in amplitude.

The frequency of the output voltage can theoretically be regulated to within 0.1 % of the rated value, however the output frequency range may be intentionally extended to a maximum of ±2 Hz so that the inverter can remain synchronized with Mains 2 and its inherent frequency fluctuations, thus enabling transfer of the load to the bypass line at any time.

Note:

The output frequency range can be personalized and if necessary modified on the customer site by a qualified support technician from ±0.25 Hz to ±2 Hz in 0.25 Hz steps.

When the Mains 2 voltage moves outside this frequency range, the inverter is desynchronized and operates in "free running" mode, with the output frequency regulated to a high level of accuracy by a quartz oscillator.

When the Mains 2 frequency returns to within the specified tolerances, the inverter is gradually re-synchronized to the bypass line at a rate of 0.5 Hz to 2 Hz/s (as per the value personalized by the after-sales support department), thus avoiding exposing the load to sudden frequency variations.

Transient voltage regulation:

The inverter output voltage is not notably affected by instantaneous major variations in load characteristics.

This is due to the PWM (Pulse Width Modulation) chopping technique and the microprocessor-based regulation system that instantly compensates for any variation. In particular, the inverter output voltage remains within ±5 % of the rated voltage for load step changes of 25 to 100 % or of 100 to 25 %.

34006452EN/AC - Page 13

2. Description of MGETM GalaxyTM 9000 cubicles

2.1 Inverter cubicle

The rated outputs for MGETM GalaxyTM 9000 UPS’s (without parallel connection) or frequency converters are 800, 900 kVA.

Legend for figure 18

1- rectifier-charger (RC) module

2- inverter stack modules

3- rack for electronic control boards

4- static switch module (Single-unit or modular UPS)

4' - output static switch module (modular UPS, frequency converter or parallel UPS with SSC)

5- RC input fuses FU1-2-3

6- Mains 1 input switch Q1

7- protection fuses FU8 for the Mains 2 resistance/capacitance voltage surge protection network

8- Mains 2 input switch Q4S (Single-unit or modular UPS)

9- maintenance bypass switch Q3BP (Single-unit or modular UPS)

10- output switch Q5N

11- inverter output fuses FU 5-6-7

12- "Media Contacts 9" remote indications board

13- additional "Media Contacts 15" remote indications board (optional).

UPS or frequency converter

front view, doors open, protective covers removed

1

2

2

2

4'

2

2

2

 

 

 

 

3

 

 

 

 

 

5

 

11

 

 

 

 

 

 

12

13

 

 

 

 

 

 

 

 

 

6

 

 

7

 

 

 

 

 

 

 

8

9

 

10

 

 

 

 

4

 

 

 

Fig. 18

34006452EN/AC - Page 14

Description of MGETM GalaxyTM 9000 cubicles

2.2 Static Switch Cubicle

Static Switch Cubicles are rated 500, 800, 1200 and 2000 kVA. Figure 19 presents the layout of components in these cubicles.

front view, doors open, protective covers removed

 

 

6

5

 

 

 

 

 

 

 

 

7

8

9

 

 

 

10

 

2

 

 

 

 

11

3

 

 

 

 

 

4

 

 

 

 

 

 

 

11

10

500 or 800kVA cubicle

 

1200kVA cubicle

 

 

 

5

 

2

 

 

 

 

 

 

 

 

 

7

 

 

 

 

8

9

3

 

 

 

 

 

 

 

6

10

 

 

 

 

 

11

4

 

 

 

 

 

 

2000kVA cubicle

 

 

 

Legend for figure 19:

2- Mains 2 input switch Q4S,

3- maintenance bypass switch Q3BP,

4- output switch Q5N,

5- static switch module,

6- electronic control boards for the backup function,

7- protection fuses FU1 for the Mains 2 resistance/capacitance voltage surge protection network,

8- fuse switch Q1 (protection of the control electronics power supply against Mains 1),

9- fuse switch Q2 (protection of the control electronics power supply against Mains 2),

10- "Media Contacts 9" remote indications board,

11- additional "Media Contacts 15" remote indications board (optional).

Fig. 19

2.3 External maintenance bypass cubicle

Legend for figure 20:

1 - connection of auxiliary wires to indicate the positions of switches Q5N and Q3BP, 2 - maintenance bypass switch Q3BP,

3 - output switch Q5N.

1200kVA cubicle

Fig. 20

34006452EN/AC - Page 15

3. Control panel

MGETM GalaxyTM 9000 control panels (see figure 21) are made up of:

a visible panel with the basic controls and indications required to check the general status of the system;

a hidden panel with more detailed indications and more sophisticated control functions including an autodiagnostic system.

Note:

The information on the Mains 2 provided below does not concern frequency converters. Information on batteries does not concern frequency converters without batteries.

MGETM GalaxyTM 9000 control panel

visible panel

Monitor

hidden panel

cover

Fig. 21

34006452EN/AC - Page 16

+ 46 hidden pages