APC MGE GALAXY PW 20 - 200 KVA User Manual

MGE™ Galaxy™ PW

20 - 200 kVA

User manual

E-51028230XT/BG - 1

2 - E-51028230XT/BG

Contents

Introduction

General characteristics of MGE™ Galaxy™ PW UPSs ......................................... 5

System description .................................................................................................. 6

Different types of MGE™ Galaxy™ PW systems ................................................... 7

Isolation and protection devices .............................................................................. 7

Operation in on-line mode ....................................................................................... 8

Operation in "eco" mode ......................................................................................... 10

Operation with an engine generator set .................................................................. 11

Inverter shutdown or overload ................................................................................ 12

Output voltage quality and continuity ...................................................................... 12

Description of MGE™ Galaxy™ PW cubicles

UPS cubicle............................................................................................................. 13

Battery cubicle ........................................................................................................ 14

Control panel

General ................................................................................................................... 14

Presentation ............................................................................................................ 15

Start-up

System start-up ....................................................................................................... 17

Start-up of a module ............................................................................................... 18

Shutdown

Shutdown of the inverter ......................................................................................... 19

Shutdown of a rectifier/charger ............................................................................... 19

Control-panel display

General organisation ............................................................................................... 20

Display of messages ............................................................................................... 20

Measurement system .............................................................................................. 24

Voltage measurementsi .......................................................................................... 24

Current measurements ........................................................................................... 24

Power and frequency measurements ..................................................................... 24

Battery measurements ............................................................................................ 25

Selections and settings ........................................................................................... 25

Alarms

General ................................................................................................................... 28

Maintenance bypass ............................................................................................... 28

Environment information

Signal reception ...................................................................................................... 29

Signal transmission ................................................................................................. 29

Logging and time-stamping

Presentation of event time-stamping by MGE™ Galaxy™ PW .............................. 30

Utilisation via the MGE™ Galaxy™ PW display ..................................................... 30

Utilisation via Teleservice ....................................................................................... 33

Maintenance

Maintenance configuration ...................................................................................... 34

Battery maintenance ............................................................................................... 37

Visual check ............................................................................................................ 37

Functional check ..................................................................................................... 37

Training center ........................................................................................................ 38

Options

Isolating and voltage matching transformer for the normal and bypass AC

Source and the load ................................................................................................ 39

Harmonics filter and power factor improvement ..................................................... 39

Safety of life and property ....................................................................................... 39

Empty cubicles ........................................................................................................ 40

Electrical supervision .............................................................................................. 40

E-51028230XT/BG - 3

4 - E-51028230XT/BG

All products in the MGE™ Galaxy™ PW 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 APC by Schneider Electric. Authorised copies must be marked
"MGE™ Galaxy™ PW User Manual, N° 51028230XT".

Introduction

General characteristics of MGE™ Galaxy™ PW UPSs

UPS power rating in kVA 20 30 40 50 60 80 100 120 160 200
Normal AC input

number of conductors 3 phases
rated voltage and tolerances 380 V or 400 V or 415 V ± 10% (adjustable to ± 15%)
rated frequency and tolerances 50 Hz or 60 Hz / ± 10%
THDI with THM filter < 4%
power factor with THM filter up to 0,96

Bypass AC input

number of conductors 3 phases + neutral
rated voltage and tolerances 380 V or 400 V or 415 V / ± 10%
rated frequency and tolerances 50 Hz or 60 Hz / ± 10%

Load

number of conductors 3 phases + neutral
Ph/Ph voltages 380 V or 400 V or 415 V (according to setting)
Ph/N voltages 220 V or 230 V or 240 V (according to setting)
voltage fluctuations ± 0,5%
adjustable frequency and tolerances
(on battery power) 50 Hz or 60 Hz ± 0,05 Hz
synchronisation with bypass ± 0,5 Hz (adjustable from ± 0,25 Hz to ± 2 Hz)
voltage variation for 0 to 100% load step change ± 2% ((with battery)
permissible overloads 150% for 1 minute, 125% for 10 minutes
Isc Ph/Ph (% of I rated) 4.2 2.8 2.1 2.5 2.1 3.1 2.5 2.1 2.6 2.1
Isc Ph/N (% of I rated) 6.6 4.4 3.3 4 3.3 5 4 3.3 4 3.3
THDU Ph/Ph and Ph/N for linear load < 1,5% Ph/Ph, < 2% Ph/N
THDU Ph/Ph and Ph/N for non-linear load < 2% Ph/Ph, < 3% Ph/N
(at 80% of Pn) (1)

Battery

standard battery type gas-recombination sealed lead-acid battery

UPS characteristics

active power (kW) 16 24 32 40 48 64 80 96 128 160
efficiency at 50% load (%) 87.5 90.5 91.5 92.5 93 91 91.5 92 93 93.2
(values ± 1%)
efficiency at 100% load (%) 91.5 92 91.5 93 92 92.5 92 91.5 92.8 92.5
(values ± 1%)
heat losses (2) in KW 1.5 2.1 3.4 3.6 4.7 6.2 8.1 10.1 12.2 14.8

in cal./s 360 504 816 864 984 1488 1950 2420 2930 3550
storage temperature range -25 °C to +70 °C
operating temperature range 0 °C to 35 °C (40 °C for 8 hours)
relative humidity 95% maximum
maximum operating altitude without derating < 1000 meters
noise level (dBA) 58 58 58 60 60 62 64 65 67 68
dimensions (mm) width 715 1015 1215

depth 825

height 1400 or 1900 ± 10 1900 ± 10
weight (kg) (3) 450 450 450 490 490 800 800 800 1200 1200
recommended upstream earth-fault protection 1 A
standards design IEC 146

product ENV 50091
safety IEC 950, ENV 50091
protection IEC 521 (cubicles 1400 mm high = IP 21, cubicles 1900 mm high = IP 20)
electromagnetic compatibility IEC 62040, ENV 50091

(1): As per standards ENV 50091-3 / IEC 62040-3.
(2): The losses indicated are those produced at full rated load with the battery float charging. They must be taken into account when sizing the ventilation system.
(3): Not including any built-in options, such as harmonic filters or a bypass AC-source isolation transformer.

E-51028230XT/BG - 5

Introduction (cont.)

System description

(see figure 1)

◗ a rectifier/charger module (A)

converts 3-phase AC power from the
normal AC source supply (1) into DC
power for the normal inverter input and
float charges or recharges the battery;

◗ a battery unit (D) provides backup

power for the inverter in the event of a
voltage drop or a normal AC source
failure;

◗ an inverter module (B) converts the

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

◗ a static bypass module (C) ensures

the instantaneous transfer of the load to
the bypass AC source input in the
event of an inverter shutdown (initiated
by the user or by a protective device) or
a sudden overload;

◗ a maintenance bypass isolates the

UPS for maintenance and transfers the
load to bypass AC source input without
interrupting the supply of power. The
maintenance bypass is made up of
three manual switches (Q3BP, Q4S
and Q5N).

Note

◗ the normal AC input and the bypass

AC 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 static bypass line and the

maintenance bypass line do not exist in

The system may also include :

◗ an isolating transformer on bypass

AC input;

◗ a passive harmonic filter (FAH) on

the normal AC input;

◗ an active harmonic conditioner on the

normal AC input;

◗ different remote control, indication

and display systems.

installations where the load frequency
and the bypass AC source frequency
are different (for example in frequency
converters);

◗ when increased power is required,

several MGE™ Galaxy™ PW units
may be connected in parallel. In this
configuration, an "isolation" function is
added for the UPS system as a whole
for maintenance purposes, without
interrupting the supply of power to the
load.

Schematic diagram of the MGE™ Galaxy™ PW system

inverter (B):

DC to AC
power

QF1: isolation
and protection

isolation and
protection:

FUS Q5N

normal
AC input

(1)

Q1 FUE :

isolation
and protection

rectifier/
charger (A):

AC to DC
power

load

bypass
AC input

Fig. 1

(2)

isolation:

Q4S

maintenance bypass:

Q3BP

battery (D):

backup power

static bypass (C):

6 - E-51028230XT/BG

Introduction (cont.)

Different types of
MGE™ Galaxy™ PW
systems

AB

1

D

C

2

Fig. 2

Single-UPS unit

AB

1

D

Fig. 3

Frequency converter with
battery backup power

AB

1

Fig. 4

Frequency converter
without battery backup
power

Parallel UPS system

A

1

2

A

1

2

Fig. 5

See figure 5 showing two parallel­connected (redundant) UPS units.
A static bypass (C) does not exist in
parallel-connected frequency-converter

1

Q4S

2

2

Galaxy 1

1
2

Galaxy 2

1
2

Galaxy 3

1
2

Galaxy 4

B

D

C

B

D

C

Q3BP

Q5N

configurations.
When increased power is required (two
to four parallel units), an external
bypass must be added (see figure 6).

Isolation and protection
devices

(See figure 1 on previous page):

◗ Q1 (switch):

◗◗ isolation of the rectifier/charger (A)

from the normal AC source (1);

◗◗ rectifier/charger (A) start-up;

◗ QF1 (circuit breaker):

◗◗ battery (D) protection and isolation;

◗ Q5N (switch):

◗◗ isolation of the UPS (B) from the

load;

◗ Q4S (switch):

◗ ◗ isolation of the static bypass (C) from

the bypass AC source (2);

◗ Q3BP (switch):

◗◗ bypass switch for maintenance;

◗ FUE (fuses):

◗◗ protection of the rectifier/charger (A)

from the normal AC source;

◗ FUS (fuses):

◗◗ protection of the inverter (B) from the

load.

Note:

◗ switch Q3BP does not exist on

parallel UPS systems constituted to
increase available power;

◗ the "Q3BP" and "Q4S" switches do

not exist on frequency converters;

◗ circuit breaker QF1 does not exist on

installations without batteries.

External bypass for parallel
UPSs and the hot-swap
option

Fig. 6

See figure 6.

◗ Q5N (switch): isolation of the

inverters of all the parallel UPS
systems from the load;

◗ Q4S (switch): isolation of the static

bypasses (C) on each parallel unit
from the bypass AC source (2);

◗ Q3BP (switch): bypass switch for

maintenance.

E-51028230XT/BG - 7

Introduction (cont.)

Operation in on-line
mode

Normal operation

Normal AC source power is available
(see figure 7).

◗ lights 1 , 4 and 5 shine green on

the control panel;

◗ the power necessary for the load is

provided by the normal AC source (1)
through the rectifier/charger (A) and the
inverter (B);

◗ the rectifier/charger (A) also supplies

the power to float charge and recharge
the battery if any.
The rectifier/charger output voltage
(DC) is regulated to supply:

◗◗ the float-charging or the recharging

voltage for vented lead-acid or Ni/Cd
batteries,

◗ ◗ a single charge voltage for sealed

lead-acid batteries.
The voltages depend on the number of

battery cells and the battery
manufacturer. Factory set, they may
also be adjusted by after-sales support
technicians.
An electronic board continuously
measures the battery temperature and
automatically adjusts the voltages.

Note:

In parallel MGE™ Galaxy™ PW
systems, the power drawn by the load
is equally shared between the different

1

1

2

AB

1

2

Fig. 7

4

D

C

5

units.

Operation with the normal
AC source down

See figure 8.
In the event of a normal AC source
failure or voltage outside specified
tolerances of ±10% in amplitude (±15%
optionally), the rectifier/charger (A)
stops and the battery (D) supplies the
necessary backup power to the load via
the inverter (B). The battery, float­connected between the rectifier/charger
and the inverter, discharges during this
operating mode.

2 , 4 and 5 shine green.

Lights
The user is warned of battery operation
by the slow beeping of the buzzer
(see figure 19) and the message
"LOAD PROTECTED, BATTERY
DISCHARGING", followed by the
remaining backup time and the percent
load.
This information is also available via
volt-free changeover contacts for
remote control devices.

Note:

In the event of a normal AC source
failure, frequency converters without a
battery shut down and the load is no

4 52

1

2

AB

1

D

C

2

Fig. 8

6

longer supplied.

Battery time

The available battery time during a
normal AC source 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 normal AC
source 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" 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 rapidly.
The message "LOW-BATTERY
SHUTDOWN WARNING" is displayed,
followed by the remaining backup time
and the percent load. Light
and flashes.
Battery power stops when the voltage
supplied by the battery reaches the
minimum threshold (335 V). This
results in inverter shutdown and
transfer of the load without interruption
to the bypass AC source. Light
shines red (not flashing). The message
"LOAD NOT PROTECTED, ON-LINE
MODE" is displayed and the buzzer
sounds continuously.
If the bypass AC source also fails, the
load is no longer supplied. The inverter
automatically shuts down when the
time on battery power exceeds three
times the specified backup time.

Note:

The "low battery shutdown" warning
signal can be sent with an adjustable
time delay prior to the effective end of
battery power.

2 turns red

2

8 - E-51028230XT/BG

Introduction (cont.)

Operation with the normal
AC source restored

See figure 9.
When normal AC source power (1) 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 rectifier/charger
(A) restarts automatically, but the
inverter (B) must be restarted manually.
The rectifier/charger recharges the
battery (D) which was discharged
during the mains outage. During battery
charging, light
The message "BATTERY CHARGING"
is displayed, together with the value of
the recharging current and battery
voltage.

1

2

2 flashes green.

4 521

The battery charge cycle takes place in
two steps (see figure 10):

◗ 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.

Battery charge cycle

U/I

voltage

Note 1:

If the normal AC source failure is
shorter than 0 to 255 seconds (default
value = 30 seconds) (parameter
defined by after-sales support
department), the charger automatically
supplies the floating voltage given the
low battery discharge.

Note 2:

In frequency converters without battery
power, the return of normal AC source
power results in the automatic restart of
the rectifier/charger and the inverter.

U charge/floating
(sealed batteries)

1

2

Fig. 9

AB

D

C

Fig. 10

current
limiting

0,1 C10

constant voltage
decreasing current

current

U "floating"
(vented batteries)

t

E-51028230XT/BG - 9

Introduction (cont.)

Operation in "ECO"
mode

Normal operation

See figure 11.
The power required by the load is
supplied by the bypass AC source (2),
via the static bypass (C). The rectifier/
charger (A) supplies the power required
to float charge and recharge the battery

(D).

1 , 3 and 5 shine green and

Lights

4 flashes green. The message

light
"LOAD PROTECTED, ECO MODE" is
displayed.

Operation with the bypass
AC source outside
tolerances

Whatever the status of the normal AC
source, operation of the rectifier/
charger (A) with the battery (D) is
identical to that presented in the section
on on-line mode operation above.
When bypass AC source (2)
characteristics are outside tolerances
(voltage: ±10%; frequency as per
personalisation; phase sync with
inverter ±3°), the load is supplied via
the inverter (B).
From then on, the minimum operating
time on the inverter (B) is 2 minutes
even if the bypass AC source returns to
within specified tolerances. Refer to
figure 7 in the general appendix if the
normal AC source is present, and to
figure 8 if it is absent. After this 2
minute period, the load is immediately
transferred to the bypass AC source
when the latter returns to within
specified tolerances.

Note:

The maximum transfer time of the load
from the static bypass (C) to the
inverter (B) is 15 ms.

41 3

1

5

Operation with bypass AC
source restored

◗ no battery discharge (see figure 11).

When bypass AC source power supply
(2) is restored or returns to within
specified tolerances, the load is
transferred back to the static bypass
(C), without an interruption in the
supply of power.

Note: this operating mode does not
depend on the status of the normal AC
source, which may be within or outside
the specified tolerances.

◗ after battery discharge (see figure

12).
Operation of the rectifier/charger (A)
with the battery (D) is identical to that
presented in the section on on-line
mode operation above.

3 5

1

1

2

AB

1

2

Fig. 12

4

D

C

Forced transfer and return
transfer

◗ forced transfer. When the load is

supplied via the static bypass (C), it
may be transferred to the inverter (B)
by pressing pushbutton 2
19 in the "control panel" section).
The message "FORCED TRANSFER
TO INVERTER REQUESTED, POWER
TO LOAD MAY BE INTERRUPTED" is
displayed. Confirmation by pressing
pushbutton 1

2 is required to effectively

force transfer. The message "LOAD
FORCED TO INVERTER, ECO MODE"
is displayed. Whatever the status of the
bypass AC source, a return to normal
operation in "ECO" mode is possible
only through a forced return transfer to
the static bypass (C).

◗ forced disconnection: as the load is

supplied by the inverter (B), it can be
transferred to the bypass AC source
(M2) via the static bypass (C) by
pressing the pushbutton 2
message "FORCED TRANSFER TO
M2 REQUESTED, POWER TO LOAD
MAY BE INTERRUPTED" is then
displayed. Confirmation by pressing
pushbutton 1

2 is required for

disconnection.

Note:

There are two possibilities: the bypass
AC source is within tolerances or
outside tolerances. In the first case, the
UPS in "ECO" mode returns to normal
operation.
In the second case, the transfer will
take place with a power cut to the load
if the bypass AC source is present, or
the load will cease to be supplied if it is
absent. In both cases, the display reads
"LOAD NOT PROTECTED, ECO
MODE".

Caution:
Return to normal operation of the
installation in the "ECO" mode is
possible only after the bypass AC
source has returned to within specified
tolerances.

0 (see figure

0 . The

2

AB

1

2

Fig. 11

10 - E-51028230XT/BG

D

C

Introduction (cont.)

Inverter shutdown or
overload

See figure 13 for devices or
installations operating in on-line mode
with a bypass AC source.

3 5

1

2

AB

1

D

C

2

Fig. 13

Single-UPS unit (on-line or
"ECO" mode)

◗ in the event of a UPS shutdown

(initiated by the user or by an internal
protective device), the load is
automatically transferred to the bypass
AC source. If transfer conditions are
satisfied, transfer takes place instantly,
without interruption to the load;
Note: transfer conditions are not
satisfied when bypass AC source
characteristics are outside tolerances
(voltage: ±10%; frequency as per
personalisation; phase sync with
inverter ±3°);

◗ in the event of a major transient

overload (greater than 1.65 In),
immediate transfer takes place as
above, without interruption to the load.
The return to the inverter is automatic
when the overload disappears if the
number of possible returns has not
been reached (0 to 255, programmable
by personalisation). If this number has
been reached, the load continues to be
supplied by the bypass AC source. This
operating mode allows start-up of load
devices causing high inrush currents.
This system requires satisfied transfer
conditions.

If the conditions are not satisfied, the
inverter will current limit to 165% 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 the overload
curve in figure 14;

◗ in all three of the above cases,

inverter shutdown and supply of the
load via the bypass AC source results
in the following on the control panel:

◗◗ light 4 goes off,
◗ ◗ activation of the buzzer (continuous

beep),

◗ ◗ light 3 shines green,
◗ ◗ the message "LOAD NOT

PROTECTED, ON-LINE MODE" is
displayed.

Parallel UPSs without
redundancy

The shutdown of one inverter results in
overload on the other inverters in
operation. Two cases may then arise:

◗ if the overload on each remaining

inverter is > than 1.65 ln, the load is
immediately transferred to the bypass
AC source;

◗ if the overload is less than 1.65 ln,

the remaining inverters support the
overload (see curve in figure 14), and
the load is transferred to the bypass AC
source;

◗ after this transfer:

◗◗ the light 4 goes off,
◗ ◗ the buzzer is activated and sounds

continuously,

◗ ◗ the light 3 goes on and turns green,
◗◗ the message "LOAD NOT

PROTECTED, PARALLEL ON-LINE
MODE" is displayed.

I

1,5 In

1,35 In

Parallel UPSs with
redundancy

◗ the shutdown of one UPS unit is of

no consequence for the load. The
others each take up an equal amount of
load power and the load continues to
be supplied normally;
Unit shutdown results in the following
on the control panel:

◗◗ lights 4 and 5 go off,
◗◗ activation of the buzzer (continuous

beep),

◗◗ the message "LOAD NOT

PROTECTED, PARALLEL ON-LINE
MODE" is displayed;

◗ 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.

Frequency converters

◗ in the event of a shutdown, the load

is no longer supplied with power;

◗ in the event of a major transient

overload (greater than 1.65 In), the
inverter will current limit to 165% of
their rated current for 1 second before
stopping;

◗ in the event of a smaller but

prolonged overload, the inverter
respects the same overload curve as
the single inverter and shuts down;

◗ in all three of the above cases,

inverter shutdown results in the
following:

◗◗ lights 4 and 5 go off,
◗ ◗ activation of the buzzer (continuous

beep),

◗◗ the message "LOAD NOT

PROTECTED, ON-LINE MODE" is
displayed.

Fig. 14

1,25 In

1,15 In
1,10 In
1,05 In

In

12345678910

30 120

E-51028230XT/BG - 11

t

(min)

Introduction (cont.)

Operation with an
engine generator set

See figure 15 below.
If a stand-by generator is included in
the installation, it is generally started
automatically in the event of a normal
AC source failure and connected to the
main low voltage switchboard. It is
disconnected when normal AC source
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
(D) supplies power to the inverter (B)
during the transfers:

◗ normal AC source to the generator;
◗ generator to the normal AC source.

The transfer sequences described
above (normal AC source ➜ battery,
battery ➜ generator, generator ➜
battery, and battery ➜ normal AC
source) 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 (lasting 3 to 10 seconds,
depending on the percent load).
To avoid overloading an undersized
engine generator set, it is possible to
set a maximum power level drawn by
the normal AC input. Any additional
power required is supplied by the
battery. This modification can be made
on site by an APC by Schneider
Electric technician.

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
normal AC source 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
synchronised with the bypass AC
source 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
personalised and if necessary modified
on the customer site by a qualified APC
by Schneider Electric support
technician from ±0.25 Hz to ±2 Hz in

0.25 HZ steps.
When the bypass AC source voltage
moves outside this frequency range,
the inverter is desynchronised and
operates in "free running" mode, with
the output frequency regulated to a
high level of accuracy by a quartz
oscillator.

When the bypass AC source frequency
returns to within the specified
tolerances, the inverter is gradually re­synchronised to the bypass line at a
rate of 0.5 Hz to 2 Hz/s (as per the
value personalised 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 made possible by the PWM
(Pulse Width Modulation) chopping
technique and the microprocessor­based regulation system that instantly
compensates for any variation. In
particular, the inverter output voltage
remains within +/- 2% of the rated
voltage for load step changes of 0 to
100% or of 100 to 0%.

12 - E-51028230XT/BG

Example of an installation with an engine generator set

MGE Galaxy PW

generator

G

HV system

Fig. 15

main LV switchboard

Mains 2

Mains 1

C

A

B

D

UPS cubicle

The rated outputs for
MGE™ Galaxy™ PW UPSs (or
frequency converters) are 20, 30, 40,
50, 60, 80, 100, 120 , 160 and 200kVA.
See figure 16 for the layout of the
various cubicle components.

Legend for figure 16:
1 - rectifier/charger module,
2 - inverter module,
3 - static-bypass module,
4 - cage for electronic control boards,
5 - rectifier/charger input fuses "FUE",
6 - inverter output fuses "FUS",
7 - normal AC input switch Q1,
8 - bypass AC input switch Q4S (single

or redundant parallel UPSs),
9 - maintenance bypass switch Q3BP
(single or redundant parallel UPSs),

10 - output switch Q5N,
11 - display board,
12 - Media Contacts 11 remote

indications board.

Description of MGE™ Galaxy™ PW cubicles

11

1 4

12

22 2

5

3

7 8 9 10

6

1

2 3

5

7 8 9 10

80 - 100 - 120 kVA

1 2 2 2 3

11

4

12

5 6

6

7

3

8

4

9

10

11

12

20 - 30 - 40 - 50 - 60 kVA

Fig. 16

160 - 200 kVA

E-51028230XT/BG - 13

Control panel

Battery cubicle

Figure 17 shows an example of
component layout in a battery cubicle
or a battery circuit-breaker enclosure.

Legend for figure 17:
1 - battery isolation and protection

circuit breaker QF1,

2 - battery cells.

2

2

2

2

1

Fig. 17

1

General

The control panel on
MGE™ Galaxy™ PW UPSs comprises
the basic controls and indications
required to check the general status of
the system (see figure 19).

Located in the upper right part of the
cubicle front, the control panel is
designed to provide an easy and rapid
overview of system status (see figure
19 on next page).
Interpretation of symbols is very simple
and requires no particular training.
The information concerns only the
cubicle on which the panel is located.
The panel indicates:

◗ normal operation (load protected);
◗ operation with load on battery power;
◗ abnormal situations (operating

problem);

◗ dangerous situations (load not

protected).

Note:

The information on the bypass AC
source provided below does not
concern frequency converters.
Information on batteries does not
concern frequency converters without
batteries.

Fig. 18

14 - E-51028230XT/BG

Control panel (cont.)

Presentation

See figure 19.

"Rectifier/charger" light

◗ light off: rectifier/charger OFF;
◗ light shines green: rectifier/charger

ON;

◗ light shines red: rectifier/charger fault,

the stored alarm indicates one or
several of the following faults:

◗ ◗ input switch Q1 open,
◗ ◗ protection fuse at the rectifier/charger

input (FUE) blown,

◗ ◗ abnormally high internal rectifier/

charger temperature,

◗◗ abnormally high battery charge

current,

◗ ◗ abnormally high battery voltage,
◗ ◗ fault, non-calibration or non-

personalisation of the electronic control
board for the rectifier/charger,

◗◗ fault on the electronic power-supply

board.

"Battery light"

◗ light off: battery float charging;
◗ light flashing green: battery

recharging;

◗ light shines green: load on battery

power;

◗ light flashing red: low-battery

shutdown warning;

◗ light shines red: battery at end of

backup time and circuit breaker QF1
open, or battery fault.

2

1

"Inverter" light

◗ light off: inverter OFF;
◗ light flashing green: inverter starting,

4

inverter ON but not connected to the
load;

◗ light shines green: normal inverter

operation;

◗ light shines red: inverter fault, the

stored alarm indicates one or several of
the following faults:

◗ ◗ inverter shutdown due to inverter

output voltage outside specified
tolerances,

◗◗ protection fuse at the inverter output

(FUS) blown,

◗◗ abnormally high inverter-output

transformer temperature,

◗◗ abnormally high inverter temperature,
◗◗ output-voltage fault (amplitude or

phase) (parallel UPSs),

◗ ◗ fault, non-calibration or non-

personalisation of the electronic control
board for the inverter,

◗◗ fault on the electronic power-supply

board.

"Load" light

◗ light off: load not supplied;
◗ light shines green: load supplied via

5

the inverter or the bypass AC source
(via the static bypass).

Buzzer

6

The buzzer sounds in the following
situations:

◗ load supplied by the bypass AC

source;

◗ load on battery;
◗ operating problems.

It sounds slowly and discontinuously for
a minor problem or when the inverter is
on battery power.
When the alarm "LOW BATTERY
SHUTDOWN" is activated, the buzzer
sounds more rapidly. Finally, if the
inverter shuts down, the beep is loud
and continuous. The buzzer may be
reset by pressing a button. If the buzzer
is reset, a higher level alarm will set it
off again.

"Full-shutdown" button

7

Pressing this button shuts down the
entire UPS (shutdown of the inverter
and rectifier/charger, opening of the
battery circuit breaker and activation of
a relay contact on the Media Contacts
11 board).

"Inverter ON" button

8

This button is used to start the inverter
locally.

"Inverter OFF" button

9

This button turns the inverter off locally.

"Static-bypass" light

◗ light off: bypass AC source within

3

specified tolerances and static bypass
open;

◗ light shines green: static bypass

closed;

◗ light shines red: the stored alarm

indicates one or several of the following
faults:

◗ ◗ bypass AC source voltage or

frequency outside specified tolerances,

◗◗ static-bypass fault,
◗ ◗ abnormally high internal static-

bypass temperature,

◗◗ static-bypass ventilation fault,
◗◗ power-supply fault for the static-

bypass control function,

◗ ◗ fault on the electronic board

controlling the transfer function,

◗ ◗ non-calibration or non-

personalisation of the electronic control
board for the inverter,

◗◗ fault on the electronic power-supply

board,

◗◗ fault on monitoring the "inverter

ready" response channels (parallel
UPS system).

Fig. 19

7643 521

1

2

23

10 11 12 13 14 1515 16

V A W.Hz

17

fault

2220 21

8

9

18
19

E-51028230XT/BG - 15

Control panel (cont.)

Keys 10 and 11

These keys are used to select
commands in the main menu and
access the secondary messages.

Key 12

This key is used to validate the user’s
choice.

Key 13

This key is used to access the main
menu: display language, display­contrast setting, sound level of the
buzzer, lamp test, date and time
settings, inverse-video and event log.

"V" key 14

This key is used to access voltage
measurements:

◗ normal AC source phase-to-phase

voltages;

◗ bypass AC source phase-to-phase

and phase-to-neutral voltages;

◗ load phase-to-phase and phase-to-

neutral voltages.

"A" key 15

This key is used to access current
measurements:

◗ normal AC source, bypass AC source

and load currents;

◗ percent load;
◗ load crest factor.

key 18

This key is used to access the primary
messages.

"Battery" key 19

This key is used to access battery
measurements:

◗ battery voltage (or the DC voltage on

frequency converters without a battery);

◗ battery current (charge or discharge);
◗ battery temperature;
◗ available battery backup time;
◗ inverter load level (percent).

"Forced-transfer" key 20

This key is used to voluntarily transfer
the load to the inverter or from the
inverter to the static bypass (return
transfer). Transfer and return transfer
are carried out only following
confirmation requested by the system
display and a warning as to the risk of
an interruption in the supply of power to
the load.

"Alarm reset" key 21

This key is used to reset stored alarms.
The system accepts resetting only
when alarms have been cleared.

"Buzzer reset" key 22

This key is used to stop the buzzer.
However, new alarms set the buzzer off
again.

"W.Hz" key 16

This key is used to access other
measurements:

◗ normal AC source, bypass AC source

and inverter frequencies;

◗ level of active and apparent power

drawn by the load;

◗ load power factor;
◗ inverter load level (percent).

"Anomaly" indicator light 17

This indicator light indicates the
presence of anomalies.

Display 23

The display continuously indicates the
system operating status.

16 - E-51028230XT/BG

Start-up

System start-up

Single-UPS unit or
redundant parallel UPS or
UPS in "ECO" mode

See figure 20.
Proceed in the following order:

◗ close the upstream switches

supplying normal and bypass AC
source power (on the LV switchboard);

◗ close normal AC input switch Q1.

The system powers up:

◗◗ the rectifier/charger automatically

starts,

◗◗ green light 1 on the control panel

goes on,

◗◗ light 2 turns red;

◗ close bypass AC input switch Q4S:

◗◗ green lights 3 and 5 on the control

panel go on;

◗ close inverter output switch Q5N;
◗ close battery circuit breaker QF1;

◗◗ light 2 goes off;

◗ open maintenance bypass switch

Q3BP;

◗ press the "inverter on" button 8 on

the control panel:

◗◗ the green "inverter" light 4 flashes,
◗◗ the inverter starts, then, if the bypass

AC source transfer conditions are
satisfied, the load is transferred to the
inverter if the on-line mode is selected,
or the load remains on the static
bypass if the "ECO" mode is selected,

◗◗ the green "static-bypass" light 3

goes off,

◗◗ the green "inverter" light 4 shines

for on-line mode or flashes for "ECO"
mode.

Parallel UPS unit for
increased output

See figure 21.
Proceed in the following order:

◗ check that all load devices are off or

that the load is disconnected;

◗ close the upstream switch supplying

normal AC source power (on the LV
switchboard);

◗ close the normal AC input switches

Q1 on the UPS units. The system
powers up:

◗◗ the rectifier/chargers automatically

start,

◗◗ the green "rectifier/charger" lights 1

in the control panels go on,

◗◗ lights 2 turn red;

◗ close the battery circuit breakers

QF1;

◗◗ lights 2 go off;

◗ close Mains 2 input switch Q4S in the

external bypass unit:

◗◗ green lights 3 and 5 on the control

panels go on;

◗ close output switches Q5N for the

inverters and in the external bypass
unit;

◗ open maintenance bypass switch

Q3BP in the external bypass unit;

◗ press the "inverter on" button 8 on

each control panel:

◗◗ the green "inverter" lights 4 flash;

◗ when a sufficient number of inverters

are ready, the inverter-output
contactors close:

◗◗ the green "inverter" lights 4 shine

permanently green;

◗◗ the "static-bypass" lights 3 go off.

Single-converter unit or
redundant parallel
converter unit

See figure 21.
Proceed in the following order:

◗ close the upstream switch supplying

normal AC source power (on the LV
switchboard);

◗ close normal AC input switch Q1.

The system powers up:

◗◗ the rectifier/charger automatically

starts,

◗◗ green light 1 on the control panel

goes on;

◗ close battery circuit breaker QF1;
◗ close inverter output switch Q5N;
◗ press the "inverter on" button 8 on

the control panel:

◗◗ the green "inverter" light 4 flashes,
◗ ◗ the inverter starts up, then connects.

The load is then supplied by the
inverter,

◗◗ the green light 4 shines

permanently, and light
Note:

Each time a device is switched on, a
lamp test is run: all the lights turn
orange for roughly 1 second. The
message "autotest OK" is displayed
until the first primary message is sent.

5 turns green.

0

1

1

0

2

1

0

3

0

1

0

0

1

0

0

QF1

1

1

0

1

1

0

1

1

0

1

1

0

Q5NQ1 Q4S

Q3BP

4

I

0

1

0

5

0

1

1

0

1

0

6

20 - 200 kVA

Fig. 20 Fig. 21

Q5NQ1

1

0

1

QF1

1

0

2

I

0

1

0

3

Q5NQ1

1

0

4

20 - 200 kVA

E-51028230XT/BG - 17

Start-up (cont.)

Start-up of a module

Start-up of a rectifier/
charger

◗ rectifier/charger start-up is automatic

when the normal AC input switch Q1 is
closed:

◗ ◗ the green "rectifier/charger" light 1

on the control panel goes on;

◗ close battery circuit breaker QF1.

Start-up of an inverter

When the rectifier/charger is on:

◗ press the "inverter ON" button 8 on

the control panel;

◗ ◗ the green "inverter" light 4 flashes.

Single-UPS unit

◗ the inverter starts, then, if the bypass

AC source transfer conditions are
satisfied, the load is transferred to the
inverter if the on-line mode is selected,
or the load remains on the static
bypass if the "ECO" mode is selected.
For on-line mode:

◗ ◗ the green "inverter" light 4 remains

on,

◗ ◗ the "static-bypass" light 3 goes off.

◗ For "ECO" mode:

◗ ◗ the green "inverter" light 4 flashes,
◗ ◗ the "static-bypass" light 3 remains

on.

Single-converter unit

◗ the inverter starts up, then connects.

The load is then supplied by the
inverter:

◗◗ the green lights 4 and 5 go on.

Parallel-converter unit

◗ the inverter starts and awaits the start

of the other inverters;

◗ when they are all on or enough have

been started to supply the rated load
power, the output switch for each
running inverter closes and the load is
supplied with power:

◗ ◗ the green lights 4 and 5 on the

control panels of the running inverters
go on.

Parallel UPS unit

◗ the inverter starts and awaits the start

of the other inverters;

◗ when they are all on or enough have

been started to supply the rated load
power, the output switch for each
running inverter closes and the load is
supplied with power:

◗◗ the green "static-bypass" light 3

goes off,

◗◗ the green "inverter" light 4 on the

control panels of the running inverters
goes on.

18 - E-51028230XT/BG

Shutdown

Shutdown of the
inverter

◗ press the "inverter OFF" button 9 on

the control panel for three seconds (see
figure 19).

Single-UPS unit

◗ the green "inverter" light 4 on the

control panel goes off;

◗ the green "static-bypass" light 3

goes on;

◗ the inverter stops;
◗ if bypass AC source (Mains 2)

transfer conditions are satisfied, the
inverter shuts down and the load is
transferred to the bypass AC source;

◗ if bypass AC source (Mains 2)

transfer conditions are not satisfied, the
inverter does not shut down. The
message "MAINS 2 OUTSIDE
TOLERANCES, TRANSFER
DISABLED" is displayed.

UPS in "ECO" mode

◗ the green "inverter" light 4 on the

control panel goes off;

◗ if the load was on the static bypass,

nothing is changed;

◗ if the load was on the inverter:

◗ ◗ the green "static-bypass" light 3

goes on,

◗◗ if bypass AC source (Mains 2)

transfer conditions are satisfied, the
inverter shuts down and the load is
transferred to the bypass AC source,

◗ ◗ if bypass AC source (Mains 2)

transfer conditions are not satisfied, the
inverter does not shut down. The
message " MAINS 2 OUTSIDE
TOLERANCES, TRANSFER
DISABLED" is displayed.

Single-converter unit

◗ the green lights 4 and 5 on the

control panel go off;

◗ the inverter stops.

Parallel UPS unit

◗ if the system is redundant, i.e. the

other parallel-connected inverters can
supply the load on their own, the
inverter shuts down and the green
"inverter" light
The load is not affected in that the other
inverters continue to supply it normally;

◗ if the system is not redundant, the

other inverters go to overload status.
If overload conditions are overrun, the
load is transferred to the bypass AC
source:

◗ ◗ the green lights 3 turn green,
◗ ◗ the green "inverter" light 4 goes off.

4 goes off.

Parallel-converter unit

◗ the redundant system means that the

other parallel inverters can supply the
load unassisted. The inverter shuts
down and the green "inverter" light
goes off. The load is not affected in that
the other inverters continue to supply it
normally;

4

Shutdown of a rectifier/
charger

Except in frequency converters without
a battery, it is recommended not to stop
the rectifier/charger because the
battery will no longer be charged.
Except in the case of a test of the
inverter on battery power, the rectifier/
charger should be shutdown after the
inverter to avoid unnecessary battery
discharge.
Proceed in the following order:

◗ open battery circuit breaker QF1;
◗ open normal AC input switch Q1:

◗ ◗ the rectifier/charger shuts down,
◗ ◗ the green "rectifier/charger" light 1

goes off.

Note:

In a frequency converter without a
battery, rectifier/charger shutdown
automatically results in inverter
shutdown.

E-51028230XT/BG - 19

Control-panel display

General organisation

The display is structured around
primary and secondary messages,
measuring tables and setting screens.
As a rule, the message displayed on
the screen is always a primary one.
The secondary messages, if any, are
accessed by pressing keys 1
11 (see figure 19).
The presence of secondary messages
is indicated by the arrow
of the primary message. Return to the
primary messages is automatic if the
keypad is not used for 2 minutes, or
direct by pressing key 1

19). The display screen lights up when
a key is pressed, and goes off if no key
is pressed for 5 minutes.

Note:

Most functions may be directly
accessed. For example, when voltage
measurements are currently displayed,
it is possible to directly access current
measurements by pressing the "A"
button.

0 and

at the end

8 (see figure

Display of messages

In addition to keypad operations, the
graphical display brings up a window
giving the overall device status. The
message displayed is then said to be
primary (see list in the paragraph
below). A primary message can be
used to access the measuring tables
using keys 1
the keypad (see figure 21 in the general
appendix). The configuration screens
can be accessed by pressing key 1
A flashing arrow appears at the end of
a primary message if there is a problem
or an alarm; secondary messages can
be accessed by pressing key 1
the keypad (see the list of secondary
messages). The presence of another
message is indicated by the arrows
and at the end of the secondary
message. They can be accessed by
pressing keys 1
keypad.
The return to the primary message is
automatic after a 2 minute time delay or
by pressing key 1

4 , 15 , 16 and 19 on

3 .

0 on

0 and 11 on the

8 on the keypad.

Display of alarms

primary message

(ALARM MESSAGE N° 1)

(ALARM MESSAGE N° 2)

(LAST ALARM MESSAGE)

main screen

Fig. 22

Fig. 19

7643 521

1

2

23

10 11 12 13 14 1515 16

V A W.Hz

17

fault

2220 21

8

9

18
19

20 - E-51028230XT/BG

Control-panel display (cont.)

List of primary messages

LOAD PROTECTED
ON-LINE MODE

This is the normal display when there
are no alarms or problems and the load
is correctly supplied by the inverter, in
on-line mode.

LOAD PROTECTED
PARALLEL ON-LINE MODE

This is the normal display when there
are no alarms or problems and the load
is correctly supplied by the inverter in a
parallel UPS system, in on-line mode.

LOAD NOT PROTECTED
ON-LINE MODE

This display indicates that the load is
not supplied by the inverter, or that
there is no battery backup. The arrow
indicates the presence of one or more
problems specified in secondary
messages.
The buzzer sounds continuously.

LOAD NOT PROTECTED
PARALLEL ON-LINE MODE

Situation identical to that in the
previous screen, but for parallel UPS
systems.

LOAD PROTECTED
BATTERY DISCHARGING
Remaining battery time (min) = XX
% kW used = XXX

The load is supplied by the inverter, but
the normal AC source is down or
outside tolerances and power is
supplied by the battery.
This message indicates the remaining
battery time in minutes prior to inverter
shutdown and the percent load. The
battery time calculation takes into
account:

◗ the percentage of full rated load

power currently being drawn;

◗ the type of battery;
◗ battery temperature;
◗ battery age.

The buzzer sounds slowly and
discontinuously.

LOAD PROTECTED,
LOW-BATTERY SHUTDOWN
WARNING,
Remaining battery time (min) = XX
% kW used = XXX

This message replaces the preceding if
the power outage persists and the
warning level has been reached.
The user is warned that the battery is
about to shut down.
The buzzer sounds rapidly and
discontinuously.

LOAD PROTECTED
ECO MODE

This is the normal display when there
are no problems: the load is supplied
by the inverter or the bypass AC
source, and battery backup is available.

LOAD NOT PROTECTED
ECO MODE

This display indicates that the load is
supplied but has no battery backup.
The arrow
one or more problems specified in
secondary messages.
The buzzer sounds continuously.

LOAD FORCED TO INVERTER
ECO MODE

The load has been transferred to the
inverter following a specific request by
the user.

indicates the presence of

E-51028230XT/BG - 21

Control-panel display (cont.)

List of secondary
messages

LOAD ON MAINS 2

The load has been transferred to the
bypass AC source (M2) and is no
longer protected (only in on-line mode).
The buzzer sounds continuously.

MAINS 2 OUTSIDE TOLERANCES
TRANSFER DISABLED
CHECK MAINS 2

The bypass AC source (M2) frequency
or voltage is outside tolerances and the
inverter is unable to synchronise.
Transfer of the load from the inverter to
the bypass AC source (M2) or vice­versa will result in an interruption of the
supply of power to the load. The buzzer
sounds slowly and discontinuously.

BATTERY OVERTEMPERATURE,
CHECK VENTILATION

The battery temperature is outside
tolerances. The buzzer sounds slowly
and discontinuously.

BATTERY ROOM VENTILATION
FAULT,
CHECK VENTILATION

A fault requiring servicing has occurred
in the battery room ventilation system.
The rectifier/charger shuts down after a
30-second time delay.
The user must take steps to re­establish correct operation of the
ventilation system.
If a harmonic filter is present in the
installation, this message also signals
an abnormally high temperature in the
filter inductor.
The buzzer sounds slowly and
discontinuously.

MAINS 1 OUTSIDE TOLERANCES,
CHECK MAINS 1

The normal AC source (M1) frequency
or voltage is outside specified tolerances
and the rectifier/charger has shut down.
The inverter is on battery power.

MAINS 1 INPUT SWITCH Q1
IS OPEN

The normal AC input (M1) switch Q1 is
open. It must be closed for rectifier/
charger start-up. The buzzer sounds
slowly and discontinuously.

INTERNAL UPS FAULT,
LOAD TRANSFER FAULT,
CALL MAINTENANCE

A fault has occurred in the static switch
that transfers the load between the
inverter and the bypass AC source
(M2). Servicing by the after-sales
support department is required. The
buzzer sounds continuously.

OVERLOAD
RATED CURRENT PER PHASE =
XXX A
CHECK LOAD LEVEL

This display informs the user that load
current is greater than rated current,
and gives the value. The buzzer
sounds continuously.

UPS SHUTDOWN DUE TO AN
OVERLOAD,
CHECK LOAD LEVEL

This message follows the preceding
when the overload persists. The UPS
has shut down and the buzzer sounds
continuously.

INVERTER NOT IN PHASE WITH
MAINS 2.
TRANSFER DISABLED,
CHECK MAINS 2

The phase difference between the
inverter and the bypass AC source
(M2) is outside tolerances. Transfer of
the load between the inverter and the
bypass AC source (M2) will result in an
interruption in the supply of power to
the load.
For parallel UPSs, this message should
be interpreted as meaning the phase
difference between the inverter for which
the message is displayed and the other
inverters is outside tolerances.

UPS SHUTDOWN
BY AN EXTERNAL COMMAND

The inverter has received a command
to shut down. The command is in the
form of a signal from received the
remote-indications relay board which
has been set for this function.

FREQUENCY CHANGE
BY AN EXTERNAL COMMAND

The inverter has received a command
to change its output frequency (50 Hz
or 60 Hz). This command is not
effective unless the inverter has first
been shut down. The frequency is
changed when the inverter is started
again.

MAINS 2 INPUT SWITCH Q4S IS
OPEN

The bypass AC source (M2) input
switch Q4S is open, i.e. backup power
for the load via the bypass AC source
(M2) is not available.

INVERTER OUTPUT SWITCH Q5N
IS OPEN

22 - E-51028230XT/BG

Inverter output switch Q5N is open, i.e.
the load cannot be supplied via the
inverter.

Control-panel display (cont.)

BYPASS SWITCH Q3BP
IS CLOSED

Maintenance bypass switch Q3BP is
closed. The system is in maintenance
configuration and the load is supplied
by the bypass AC source.

STATIC SWITCH (M2) OFF
DUE TO AN OVERLOAD

The load is no longer supplied by the
bypass AC source (M2), due to an
extended overload. The buzzer sounds
continuously.

BATTERY CHARGING
I BAT. = XXX A U BAT. = XXX V

The battery is currently being
recharged.

BATTERY AT END OF SERVICE
LIFE
CALL MAINTENANCE

The battery is nearing the end of its
estimated service life. This information
is based on average service-life
calculations since its initial installation.
The buzzer sounds slowly and
discontinuously.

EMERGENCY OFF OR FULL
SHUTDOWN

This message is displayed when either
the external emergency-off pushbutton
or the full-shutdown button
control panel are pressed. The result is:

◗ shutdown of the inverter;
◗ shutdown of the rectifier/charger;
◗ opening of the battery circuit breaker;
◗ activation of a relay contact on the

remote-indications relay board.
To fully de-energise the installation,
these functions must also open the
external, upstream circuit breakers on
the normal and bypass AC supply lines.
The buzzer sounds continuously.

7 on the

THE BATTERY C.B. QF1 IS OPEN,
CHECK THE INSTALLATION

Battery circuit breaker QF1 is open.
The load is no longer protected
because battery power is no longer
available in the event of a normal AC
source outage. The buzzer sounds
continuously.

LOW BATTERY SHUTDOWN

The inverter has shut down at the end
of battery power. The buzzer sounds
continuously.

INTERNAL UPS FAULT,
INVERTER FAULT,
CALL MAINTENANCE

A fault has occurred in the inverter.
Servicing by the after-sales support
department is required. The buzzer
sounds continuously.

INTERNAL UPS FAULT,
CHARGER FAULT,
CALL MAINTENANCE

A fault has occurred in the rectifier/
charger. Servicing by the after-sales
support department is required.
The buzzer sounds slowly and
discontinuously.

FORCED TRANSFER TO INVERTER
REQUESTED, POWER TO LOAD
MAY BE INTERRUPTED,
CONFIRM YOUR REQUEST WITH

KEY

The requested transfer to the inverter
may provoke an interruption in the
supply of power to the load if Mains 2
characteristics are not within the
specified tolerances.

THE NUMBER OF UPS READY IS
INSUFFICIENT,
LOAD TRANSFER IN STAND BY

This message may be displayed in non­redundant, parallel UPS systems,
when the number of ready inverters in
not sufficient to supply the load.

INVERTER NOT CONNECTED

This message may be displayed in
parallel UPS systems, when the
inverter is not connected to the load.

PARALLEL UPS,
FORCED TRANSFER INHIBITED

This message is displayed when forced
connection is requested on a parallel
UPS system for a power extension.

INTERNAL UPS FAULT,
SELF-TEST FAULT

Communication between the system
and the display is faulty. The buzzer
sounds slowly and discontinuously.

FORCED TRANSFER TO M2
REQUESTED,
POWER TO LOAD MAY BE
INTERRUPTED
CONFIRM YOUR REQUEST WITH
KEY

This message is displayed following
pressing of the "forced-transfer" key

0, when the load is supplied via the

2

inverter.

UPS SUPPLIED BY A GENERATOR
SET

This message informs the user that the
UPS has received the order to limit the
current drawn by the rectifier/charger.
It is displayed when the corresponding
signal is transmitted by the remote
indications board which must be
configured for this function.

E-51028230XT/BG - 23

Control-panel display (cont.)

Measurement system

The display 23 may be used to read a
number of input and output
measurements made at different points
in the system. See, in the Appendix,
figure 23.

◗ normal AC source 1

◗◗ phase-to-phase voltages,
◗ ◗ currents of the three phases,
◗◗ frequency;

U - I - F

Q1

1

2

U - V - I - F

Q4S

2

U - I

AB

QF1

D

◗ bypass AC source 2

◗ ◗ phase-to-neutral voltage,
◗ ◗ phase-to-phase voltages,
◗ ◗ frequency,
◗ ◗ currents of the three phases;

◗ battery 3

◗ ◗ voltage;
◗ ◗ charge or discharge current;
◗ ◗ remaining battery time (for the UPS

unit concerned);

◗ ◗ battery temperature;

◗ inverter output 4

◗ ◗ frequency;

6431

F

C

U - V - I - F - P

Q5N

◗ total load 6

◗ ◗ phase-to-neutral voltage,
◗ ◗ phase-to-phase voltages,
◗ ◗ currents of the three phases,
◗◗ frequency,
◗◗ active and apparent power.

Note:

Frequency converters without batteries
are not concerned by the battery
measurements. The displayed battery
voltage corresponds to the DC voltage
at the rectifier/charger output.
Bypass AC source
are not displayed on frequency
converters

2 measurements

Fig. 23

Voltage measurements

These measurements may be
accessed by pressing the "V" key 1
The following data is displayed.

Note:

M1: normal AC source
M2: bypass AC source

4 .

Current measurements

These measurements may be
accessed by pressing the "A" key 1
The following data is displayed.

Note:

CF: crest factor

5 .

Power and frequency
measurements

These measurements may be
accessed by pressing the "W.HZ" key

6 . The following data is displayed.

1

Note:

PF: power factor

RMS M1 M2 LOAD RMS M2 LOAD
U12 ---- ---- ---- V1 ---- ---­U23 ---- ---- ---- V2 ---- ---­U31 ---- ---- ---- V3 ---- ----

RMS M1 M2 LOAD FC-LOAD I-LOAD/I-NOM
I1 ---- ---- ---- -.-- ---- %
I2 ---- ---- ---- -.-- ---- %
I3 ---- ---- ---- -.-- ---- %

LOAD KW KVA PL/PN = --- % FREQ.HZ
P1 ---- ---- M1 --.­P2 ---- ---- M2 --.­P3 ---- ---- FP.LOAD = -.- INV --.-

24 - E-51028230XT/BG

Battery measurements

Control-panel display (cont.)

These measurements may be
accessed by pressing the "battery" key

9 . The following data is displayed.

1

Selections and settings

These selections and settings may be
accessed by pressing the "contrast"

3 . The following menu is

key 1
displayed.

◗ Selecting the language:

BATTERY
U = ---- V REMAINING TIME = ---- MIN
I = ---- A PL / PN = ---- %
T° = ---- °C

CHOOSE LANGUAGE DATE AND TIME
CONTRAST SETUP INVERSE VIDEO
BUZZER SETUP PAST EVENTS
LAMP TEST BATTERY TEST

FRENCH SPANISH
ENGLISH DUTCH

◗ Adjusting the display contrast:

◗ Adjusting the buzzer volume:

◗ Lamp test:

When this function is selected, all the
lights shine orange for three seconds.

◗ Set date and time:

Use the "▲▼" keys to enter the data
and confirm using the "

" key.

GERMAN SWEDISH
ITALIAN PORTUGUESE

DISPLAY CONTRAST SETUP

CHOOSE WITH KEYS OR

VALIDATE WITH KEY

BUZZER VOLUME SETUP

CHOOSE WITH KEYS OR

VALIDATE WITH KEY

DATE AND TIME SETUP
YEAR ---- MONTH -­DAY -- HOURS -­MINUTES -- SECONDS --

E-51028230XT/BG - 25

Control-panel display (cont.)

◗ Inverse video:

When this function is selected, the text
and background colours are reversed
(white text on black or black text on
white).

◗ Past events:

See section "logging and time­stamping".

◗ Battery test:

◗ ◗ the screen opposite is displayed

when a battery test is requested. It
indicates the battery charge status and
the remaining service life. A manual or
automatic test may be requested,

◗◗ the screen opposite is displayed

during a battery test, whether manual
or automatic,

◗◗ the screen opposite is displayed

following a positive, manual battery
test,

◗ ◗ the screen opposite is displayed

following a negative, manual battery
test,

◗ ◗ the screen opposite is displayed

following a positive, automatic battery
test. It indicates the time since the last
test and provides access to test
settings,

CHARGE LEVEL = -- %
REMAINING SERVICE LIFE = -- MONTH

◗ MANUAL TEST press key

◗ AUTO TEST press key

TESTING BATTERY
U BATTERY = --- V

BATTERY TEST RESULT OK

BATTERY TEST RESULT NOT OK

TIME SINCE LAST TEST
WEEK -- DAY -- HOUR -­LAST BATTERY TEST RESULT OK

◗◗ the screen opposite is displayed

following a negative, automatic battery

◗◗ the screen opposite is displayed when

the user requests access to the
automatic test settings. It is possible to
modify the interval between two
automatic tests,

26 - E-51028230XT/BG

NEW PARAMETERS YES = NO =

TIME SINCE LAST TEST
WEEK -- DAY -- HOUR -­LAST BATTERY TEST RESULT NOT OK

NEW PARAMETERS YES = NO =

SELECT TIME OF NEXT TEST WITH KEYS ,
CHANGE UNITS WITH
WEEK -- DAY -- HOUR --

confirm with key

◗◗ the screen opposite is displayed

when the battery test cannot be
completed.

Control-panel display (cont.)

TEST INTERRUPTED
CHECK PRESENCE OF THE BATTERY

CHECK ALARMS

E-51028230XT/BG - 27

Alarms

General

The autodiagnostic system considers
any system status other than normal as
a problem.
Before taking any action, note down
the messages displayed on the control
panel.
Certain problems may prevent the
control panel from functioning.

In this case, it is strongly
recommended to call the APC by
Schneider Electric after-sales
support department.

◗ If the load is still correctly supplied

with power, it has probably been
transferred to the bypass AC source
(static bypass) and is therefore no
longer protected (if the system is in on­line mode);

◗ if the load is no longer supplied with

power, transfer it manually to the
maintenance bypass (see section
below).

Maintenance bypass

This operation is possible only if the
system includes a bypass AC source.
It results in the load being directly
supplied by the bypass AC source via
maintenance bypass switch Q3BP, thus
ensuring a higher level of security in the
event of a malfunction.
Switching procedures are explained on
drawings next to each switch in the
UPS cubicle and the external bypass
unit. See section "maintenance
configuration".

28 - E-51028230XT/BG

Environment information

Terminals XR2, XR3, XR4 and XR5 on
the "Media Contacts 11" board of each
type of unit can be used to receive
signals from the operating environment
and to transmit signals concerning the
operating status of the UPS (see figure
16 for the position of the board, item

12).

Signal reception

The signals should be provided by volt­free contacts.

◗ emergency off:

An NC contact causes shutdown of the
inverter and the rectifier/charger,
opening of the battery circuit breaker
and activation of a relay contact on the
"Media Contacts 11" board;

◗ battery room ventilation fault:

An NO contact causes shutdown of the
rectifier/charger;

◗ battery circuit breaker QF1 closed:

An NO contact prevents inverter start­up if the circuit breaker is open;

◗ battery temperature:

A PC-board, placed near the battery,
supplies information on the battery
temperature, thus enabling the rectifier/
charger to regulate the battery voltage;

◗ "auxiliary" signals:

Depending on the selected settings,
these signals may be used to provoke:

◗◗ forced shutdown of the inverter

(whatever the status of the bypass AC
source),

◗◗ protected shutdown of the inverter

(load transfer to the bypass AC
source),

◗◗ a change in the inverter output

frequency (50 Hz or 60 Hz).

◗ ◗ limiting of the current drawn by the

rectifier/charger (programmable value)
when supplied by an engine generator
set with an insufficient power rating.
The additional power required by the
inverter is supplied by the battery which
discharges,

◗ ◗ limiting of the battery charge current

(programmable value) if the normal AC
source is replaced by an engine
generator set with an insufficient power
rating.

Signal transmission

◗ an auxiliary 24 V power supply,

isolated and backed up, is used to
supply:

◗◗ the undervoltage release of the

battery circuit breaker(s) QF1,

◗◗ the board that measures the

temperature in the battery room;

◗ "low battery" warning signal (volt-

free changeover contact) indicating that
battery time is about to run out. The
warning threshold may be
personalised;

◗ "load on UPS" signal (volt-free

changeover contact) indicating that the
load is supplied by the inverter. For a
single-UPS unit, one volt-free
changeover contact may be used to
indicate that the load is supplied by the
bypass AC source;

◗ "load on battery power" signal

(volt-free changeover contact)
indicating that the inverter is supplied
by the battery in the following cases:

◗◗ normal AC source outage or voltage

drop,

◗ ◗ rectifier/charger shutdown,
◗◗ rectifier/charger current limiting.

This signal, which may be used to
initiate process saving and shutdown
procedures, is time-delayed 30
seconds to avoid unnecessary
operations following micro-breaks;

◗ "maintenance position" signal

(volt-free changeover contact)
indicating that:

◗◗ maintenance bypass switch Q3BP is

closed,

◗ ◗ bypass AC source input switch Q4S

is open,

◗ ◗ inverter output switch Q5N is open,
◗◗ battery circuit breaker QF1 is open;

◗ signal to open battery circuit

breaker(s) QF1 in the event the
"emergency off" button is pressed or to
avoid an excessive battery discharge
(lasting more than three times the rated
backup time plus two hours);

◗ full-shutdown contact (volt-free

changeover contact) used to trip
switching devices in the event of an
emergency shutdown or a full shutdown
(button

◗ "general alarm" information (volt-

7 ).

free changeover contact) which
includes:

◗ ◗ internal faults,
◗ ◗ information on temperatures outside

tolerances in the battery room
(optional),

◗ ◗ overload information (> In),
◗◗ static-switch ventilation and power-

supply faults.

Note:

◗ The maximum breaking capacity of

the changeover contacts is 5A at 250V;

◗ information on the battery is not

supplied to frequency converters
without a battery.

E-51028230XT/BG - 29

Logging and time-stamping

Presentation of event
time-stamping by
MGE™ Galaxy™ PW

Time-stamping of events by
MGE™ Galaxy™ PW makes it
possible to:

◗ log the events;
◗ consult the last 500 events that

occurred on the MGE™ Galaxy™ PW
UPS;

Utilisation via the
MGE™ Galaxy™ PW
display

Main menu

The time and date can be set for the
UPS via the main menu on the display
(see below), using the DATE AND
TIME command. The time-stamping
information, statistics and
measurement records are also
available via the same menu, using the
PAST EVENTS command.
Simply select the desired command
with the ">" sign that can be moved
using the and keys. The
selected command can be confirmed

◗ consult general statistical data on

UPS operation;

◗ consult measurement records for a

number of physical values concerning
system operation.
The time-stamping information may be
accessed via the MGE™ Galaxy™ PW
keypad and display (standard
equipment). This information may also
be forwarded for the Teleservice
function using the JBUS RS232/485
communications board.

DATE AND TIME SETUP

>YEAR 1997 MONTH 9

DAY 8 HOURS 8
MINUTES 11 SECONDS 42

by pressing the

key.

General instructions for
using most screens

You can display the desired information
and enter commands using the
and keys.
Press the key to exit the time­stamping consultation mode and return
to the main menu. If no commands are
entered for five minutes, the system
automatically returns to the normal
display mode.
You can scroll through the screens
displaying information. Press the

,

and keys to scroll up and down
through the screens.
For time-stamped events, the display
begins with the last event logged.
To access older events, press the
key. If during consultation, you wish to
review more recent events, press the

key.

Setting the date and time
for the UPS

When the DATE AND TIME command
is selected, the screen presented
opposite is displayed:

◗ the current values are automatically

displayed;

◗ you can modify any of the displayed

values;

◗ position the ">" sign opposite the

value to be modified. Then press the

key;

◗ use the and keys to modify

the value;

◗ the key increments the value by

one;

◗ the key decrements the value by

one;

◗ the selected value can be confirmed

by pressing the key. A second
value may then be selected for
modification, again using the

keys;

◗ modifications are made and

confirmed value by value;

◗ press the key at any time to exit

the DATE AND TIME function.

and

30 - E-51028230XT/BG

That is the only means to leave the
function.
If no modifications to values are
confirmed, exiting the function
corresponds to cancelling the request.

Consulting logged (time­stamped) events

Logging and time-stamping (cont.)

DATE AND TIME SETUP

>YEAR 1997 MONTH 9

DAY 8 HOURS 8
MINUTES 11 SECONDS 42

When the PAST EVENTS command is
selected, the system displays a screen
indicating the last event logged. Log
screens are very similar to those
displayed for current events. However,
log screens include a line indicating the
corresponding date and time with the
mention "Appearance of" or
"Disappearance of", followed by the
standard text for the event (see
example opposite). Consult the user
manual for indications on the meaning
of events.
The complete log may comprise up to
500 events. If over 500 events have
occurred, only the last 500 may be
consulted:

◗ press the key to display the event

that occurred just before the displayed
event. If the displayed event is the
oldest in the list, the display is not
modified;

◗ press the key to display the event

that occurred just after the displayed
event. If the displayed event is the most
recent in the list, the display is not
modified.

Example:

02/09/1997 07:25:03 Appearance:

MAINS 1 INPUT SWITCH Q1 IS OPEN

Note: numerical values are never indicated in screens for time-stamped events.
For example:

03/09/1997 15:30:23 Disappearance:

OVERLOAD

RATED CURRENT PER PHASE = _ _ _ A

CHECK LOAD LEVEL

Consulting statistics

See the screen opposite.

◗ total backup time (h): this is the

total time of operation on battery power
since initial startup of the UPS. It is
expressed in hours;

◗ total time on static switch (h):

this is the total time of operation on the
static switch since initial startup of the
UPS. It is expressed in hours;

◗ total time on UPS (d): this is the

total time that the load has been
supplied by the UPS since initial
startup. It is expressed in days;

FIGURES SINCE COMMISSIONING

total backup time (h): 0

total time on static switch (h): 0

total time on UPS (d): 3627

total time with Tbatt >25°C (h): 1

FIGURES SINCE RESET

last reset: 05/09/1997

elapsed backup time (min): 0

E-51028230XT/BG - 31

Logging and time-stamping (cont.)

◗ total time with Tbatt > 25° C (h):

this is the total time of operation with
the battery temperature greater than
25° C since initial startup of the UPS.
It is expressed in hours;

◗ last reset: this is the date that the

information was last set to zero by the
Teleservice function;

◗ elapsed backup time (min): this is

the total time of operation on battery
power since the last reset. It is
expressed in minutes.

◗ nb of backups: this is the number of

times the load was supplied by the UPS
from battery power since the last reset;

◗ nb of backups < 1 min: this is the

number of times the load was supplied
by the UPS from battery power for less
than one minute, since the last reset;

◗ 1 min < nb of backups < 3 min: this

is the number of times the load was
supplied by the UPS from battery
power for more than one minute and
less than three minutes, since the last
reset;

Use the

and keys to shift between the beginning and the end of the display.

FIGURES SINCE RESET

nb of backups: 0

nb of backups < 1 min: 0

1 min < nb of backups < 3 min: 0

nb of backups > 3 min: 0

nb of overloads < 5 s: 0

nb of overloads > 5 s: 0

nb of times TBatt. > 25°C: 0

◗ nb of backups > 3 min: this is the

number of times the load was supplied
by the UPS from battery power for
more than three minutes, since the last
reset;

◗ nb of overloads < 5 s: this is the

number of times the UPS was
overloaded (output current greater than
In) for less than five seconds, since the
last reset;

◗ nb of overloads > 5 s: this is the

number of times the UPS was
overloaded (output current greater than
In) for more than five seconds, since
the last reset;

◗ nb of times TBatt. > 25° C: this is

the number of times the battery
temperature was measured at over
25° C, since the last reset.

Consulting recorded
measurements

Recorded measurements are presented
in the same manner (see opposite):

◗ the lists indicate the last 30

measurements recorded for the given
parameter. The chronological order of
the measurements is indicated in the
figure opposite;

◗ the most recent measurement is

presented first, in the upper left-hand
corner of the list. The following
measurement is listed just below, and
so on until the 30th value listed in the
bottom right-hand corner of the list;

◗ the period T between two successive

measurements is 30 days.
The displayed measurements are
instantaneous values.
Note: when this screen is selected,
approximately ten seconds are required
to call up and display the information.
If the number of measurements is
greater than 30, only the last 30 (the
most recent) are displayed.

PARAMETER NAME (units) T=30 days

last read: 05/09/1997

M(t+29T)|M(t+23T)|M(t+17T)|M(t+11T)|M(t+05T)

||||

M(t+28T)|M(t+22T)|M(t+16T)|M(t+10T)|M(t+04T)

||||

M(t+27T)|M(t+21T)|M(t+15T)|M(t+09T)|M(t+03T)

||||

M(t+26T)|M(t+20T)|M(t+14T)|M(t+08T)|M(t+02T)

||||

M(t+25T)|M(t+19T)|M(t+13T)|M(t+07T)| M(t+T)

||||

M(t+24T)|M(t+18T)|M(t+12T)|M(t+06T)| M(t)

32 - E-51028230XT/BG

The battery capacity is the value
measured by the UPS microprocessor.
It is expressed in Ampere-hours.
This value changes over time
depending on the parameters of the
battery itself and its environment.
This measurement is used to check
that the battery is capable of supplying
the rated power in the event of a mains
outage.

The backup time is the value
calculated by the UPS microprocessor
on the basis of measurements carried
out on the battery. It is expressed in
minutes. The calculation uses the
percent load and the battery charge
status at the time of the measurement.

Logging and time-stamping (cont.)

BATTERY CAPACITY (Ah) T=30 days

last read: 05/09/1997

97|0|0|0|0
96|0|0|0|0
95|0|0|0|0
94|0|0|0|0

0| 0| 0| 0| 0
0| 0| 0| 0| 0

BACKUP (min) T=30 days

last read: 05/09/1997

120|0|0|0|0
115|0|0|0|0
110|0|0|0|0
105|0|0|0|0

0| 0| 0| 0| 0
0| 0| 0| 0| 0

The load level is the ratio between the
power supplied by the UPS to the load
at the time of the measurement and the
rated output of the UPS. It is expressed
as a percentage.

Utilisation via
Teleservice

When the optional JBUS RS232/485
communications board is installed, the
time-stamped information can be sent
to the Teleservice centre.
The centre can remotely consult the
same information and carry out the
same modifications as the user locally
on the display. Note that only the
Teleservice centre can reset the
counters for the statistical data.

OUTPUT LOAD LEVEL(%) T=30 days

last read: 05/09/1997

63|0|0|0|0
52|0|0|0|0
63|0|0|0|0
63|0|0|0|0

0| 0| 0| 0| 0
0| 0| 0| 0| 0

E-51028230XT/BG - 33

Maintenance

Maintenance
configuration

Single-UPS unit or UPS in
"ECO" mode

See figure 24. During maintenance, the
UPS must be isolated from the normal
and bypass AC source, the battery and
the load.

◗ UPS isolation

Proceed in the following order (see
figure 25):

◗ ◗ shut down the inverter (press the

"inverter OFF" button
seconds),

◗◗ close bypass switch Q3BP,
◗◗ open isolating switches Q5N, Q4S,

QF1 and Q1.
The UPS is powered down once the
capacitors have discharged (a few
minutes);

◗ start-up

Following servicing, proceed in the
following order (see figure 26):

◗◗ close switch Q1, then after

approximately ten seconds, switches
QF1, Q5N and Q4S,

◗◗ open bypass switch Q3BP,
◗ ◗ start the inverter (press the "inverter

ON" button

8 ).

Caution

◗ work should be carried out in

accordance with applicable safety
regulations;

◗ to avoid interrupting the load, the

various switching operations must be
carried out in the correct order.
Operations are explained in diagrams
placed next to the switches;

◗ the system cubicle is only partially

powered down. The load is still
supplied via the bypass AC source and
switch Q3BP.

9 for three

Fig. 24

1

2

3

4

5

6

Fig. 25

Q1

1

2

Q3BP

1

1

0

0

1

1

0

0

1

1

0

0

QF1

0

1

1

0

0

AB

QF1

D

Q4S

Q5NQ1 Q4S

1

1

0

0

1

0

0

I

0

1

0

1

1

0

1

1

0

Q5N

C

Q3BP

Q5NQ1 Q4S

Q3BP

QF1

1

OFFOFF

0

1

0

1

2

I

0

1

OFF

0

3

1

0

4

1

0

5

0

1

0

0

1

0

0

1

1

0

1

1

0

1

1

0

6

Fig. 26

34 - E-51028230XT/BG

Maintenance (cont.)

Redundant, parallel UPS

See figures 27 and 28 in the Appendix.
During maintenance, a UPS unit must
be isolated from the normal AC source,
its battery and the output circuits of the
other UPS units.

◗ isolate one UPS (see figure 27)

Proceed in the following order (see
figure 25 without Q3BP):

◗◗ shut down the inverter (press the

"inverter OFF" button 9 for three
seconds),

◗◗ open isolating switches Q5N, Q4S,

QF1 and Q1.
The UPS unit is powered down once
the capacitors have discharged (a few
minutes);

◗ start-up

Following servicing, proceed in the
following order (see figure 26 without
Q3BP):

◗◗ close switch Q1, then after

approximately ten seconds, switches
QF1, Q5N and Q4S,

◗◗ start the inverter (press the "inverter

ON" button 8 ).

Note: if the load is still supplied

by an inverter, the Q3BP switch on
the unit undergoing maintenance
must not be closed.

A

Q1

1

2

Q1

1

2

QF1

Q4S

Q3BP

A

QF1

Q4S

Q3BP

B

Q5N

D

C

B

Q5N

D

C

1

2

1

2

Fig. 27 Fig. 28

Q1

Q1

A

Q4

Q3BP

A

Q4S

Q3BP

QF1

D

QF1

D

B

Q5N

C

B

Q5N

C

To fully isolate the installation, proceed
as indicated below:

◗ isolate all UPSs (see figure 28)

Proceed in the following order (see
figure 25):

◗◗ shut down the inverters (press the

"inverter OFF" buttons

9 for three

seconds),

◗ ◗ close the Q3BP switches used to

bypass the units (no units have
priority),

◗◗ open isolating switches Q5N, Q4S,

QF1 and Q1.
The UPS units are powered down once
the capacitors have discharged (a few
minutes).

◗ start-up

Following servicing, proceed in the
following order (see figure 26):

◗◗ close switches Q1, then after

approximately ten seconds, switches
QF1, Q5N and Q4S,

◗◗ open the Q3BP switches,
◗◗ start the inverters (press the "inverter

ON" buttons

8 ).

E-51028230XT/BG - 35

Maintenance (cont.)

Parallel UPS for increased
output

See figure 29.

◗ isolate all UPSs

Proceed in the following order (see
figure 30):

◗◗ shut down the inverters (press the

"inverter OFF" buttons
seconds),

◗ ◗ close switch Q3BP and open

switches Q5N and Q4S in the parallel­connection unit,

◗ ◗ open switches Q1, QF1 and Q5N on

the UPS units.

◗ start-up

Following servicing, proceed in the
following order (see figure 31):

◗◗ close switches Q5N on the UPS

units,

◗◗ close switch Q4S, then switch Q5N,

in the parallel-connection unit,

◗◗ open switch Q3BP in the parallel-

connection unit,

◗◗ close switches Q1 and QF1 on the

UPS units,

◗◗ start the inverters (press the "inverter

ON" buttons 8 ).
Note:

We recommend that you call on the
after-sales support department to carry
out these operations.
Note that for parallel UPSs for
increased output, the entire installation
must be bypassed because it is not
possible to isolate just one UPS unit.

9 for three

Q1

1

2

Q4S

2

1

2

1

2

1

2

Q4S

Galaxy 1

Galaxy 2

Galaxy 3

Galaxy 4

Fig. 29

MGe Galaxy PW 20 to 200 kVA

1

1

5

0

1

0

QF1

Q5NQ1 Q4S

1

0

6

I

0

1

7

0

1

0

1

0

QF1

or

bypass 150, 360 kVA

2 3 4 5

Q4S

0

Q3BP

0

Q5N

0

2 3 4 5

bypass 600 kVA

Q4S

Q3BP

Q5N

Q3BP

Q5N

1

1

1

1
0

1

00

1

0

Q5N

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1
0

1
0

1
0

36 - E-51028230XT/BG

Fig. 30

MGE Galaxy PW 20 to 200 kVA

1

5

1

0

0

1

0

1

1

0

QF1

Q5NQ1 Q4S

1

0

Q5NQ1 Q4S

1

0

6

I

0

7

Fig. 31

or

bypass 150, 360 kVA

2 3 4 5

Q4S

0

Q3BP

0

Q5N

0

2 3 4 5

bypass 600 kVA

Q4S

Q3BP

Q5N

1

1

1

1

1
0

00

1

0

1

0

1

0

1

0

1

0

1

0

1

1

0

1

0

1

0

1
0

1
0

1
0

Maintenance (cont.)

Battery maintenance

Consult the instructions supplied by the
battery manufacturer. Below are a few
general indications:

◗ sealed lead-acid batteries: these

batteries require no maintenance, but
check the terminals of each cell from
time to time and clean if necessary;

◗ vented lead-acid batteries:

◗◗ check the electrolyte level regularly

and add water if necessary,

◗◗ check the voltage of each cell to

determine if it is necessary to equalise
the battery,

◗◗ check the terminals of each cell and

clean if necessary.

Caution:

Battery maintenance is undertaken with
the system powered up. Operations
must be carried out in accordance with
applicable safety regulations by
qualified personnel using insulated
tools, gloves and safety goggles.
Batteries contain dangerous
substances that will harm the
environment if thrown away. If you
change the batteries yourself, call on
qualified organisations for battery
recovery and recycling.

Visual check

◗ Power down the system prior to any

maintenance operations.
Note: in redundant, parallel UPS
systems and frequency converters, the
check may be carried out successively
on each UPS unit without interrupting
the load. In other configurations, the
load must be supplied via the
maintenance bypass (see
"maintenance bypass" in the "Alarm"
section);

◗ clean the system regularly,

particularly the air inlet and outlet grills.
Check that the air circulates freely in
the cubicles. Use a vacuum cleaner if
necessary;

◗ check that nothing hinders the

ventilation at the top and at the back of
the system;

◗ check that all the fans operate

correctly.

Functional check

◗ Check that lights 1 , 2 and 3 on

the control panel are not red, to avoid
an interruption in the supply of power to
the load due to incorrect transfer
conditions or a battery problem;

◗ press the "inverter OFF" button and

check that the buzzer and control panel
lights function correctly (see the section
on operating modes in the introduction);

◗ press the "inverter ON" button and

check again that the control panel lights
function correctly;

◗ run a transfer to battery test. With the

inverter on, open input switch Q1. The
orange "battery" light on the control
panel should light. After two minutes on
battery power, close input switch Q1.
The rectifier/charger should
automatically restart and the orange
"battery" light on the control panel
should go off;

◗ in parallel systems, run these tests

on each UPS unit.

Pb Pb

E-51028230XT/BG - 37

Maintenance (cont.)

Training center

To allow you to useAPC by Schneider Electric products effectively and carry out basic maintenance, we offer a complete range of
technical training courses in English and French.

Training centers
Schneider Critical Power & cooling services
50 Hz :

France Training Centre
140, Avenue Jean Kuntzmann
Innovallée
38334 - St Ismier Cedex
France

Tel: [phone]
Fax: [phone]

Singapore Training Centre
10 Ang MO Kio Street 65, #03-06/10
Techpoint Building
Singapore 569059
Singapore

Tel: [phone]

China Training Centre
No. 999, Shen Fu Road
Min Hang District
Shanghai 201108
P.R. China

Training center
Schneider Critical Power & cooling services
50-60 Hz :

United States Training Centre
132 Fairgrounds Road
West Kingston - RI02892
U.S.A

Tel: [phone]

Tel: [phone]
Fax: [phone]

Internet : Http://powerlearning.apc.com
On-line catalogue and registration.

38 - E-51028230XT/BG

Options

Isolating and voltage
matching transformer
for the normal and
bypass AC source and
the load

This transformer, placed in the 1.9
meter high UPS cubicle up to 60 kVA
and in an auxiliary cubicle for higher
values, may be used to match the
bypass AC voltage to that of the
inverter, to create galvanic insulation
between the load and the Ac sources or
to create the appropriate system
earthing arrangement.

Harmonics filter and
power factor
improvement

This option, placed on the normal AC
input upstream of the UPS in the 1.9
meter high UPS cubicle for UPSs up to
120 kVA and in an auxiliary cubicle for
higher ratings, reduces the reinjection
of harmonic currents into the normal
AC source. Harmonic reinjection,
produced by the rectifier/charger,
increases distortion on the normal AC
source. The amount of the increase
depends on the source impedance.
The reduction in distortion reduces the
risk of disturbing other sensitive loads
connected to the mains. The filter can
also increase the power factor
upstream of the inverter.
Three types of filter are available:

◗ uncompensated filter for the

advantages listed above;

◗ compensated filter for the

advantages listed above and to limit the
capacitive current absorbed by the filter
(additional inductance), in the event the
UPS is supplied by an engine generator
set;

◗ active harmonic conditioner, the most

effective solution because it provides
the harmonics drawn, thus allowing the
normal AC source to supply a perfectly
sinusoidal current. The conditioner may
be installed in an auxiliary cubicle or
wall-mounted.

Safety of life and
property

◗ backfeed protection. This option,

installed upstream of the static bypass,
is used to mechanically disconnect the
bypass AC source when the system
has shifted to battery power or when
the bypass AC source has failed. This
system is intended to enhance the
safety of life and property.

E-51028230XT/BG - 39

Options (cont.)

Empty cubicles

Cubicles may be supplied empty, thus
enabling users to make up their own
auxiliary cubicles (battery cubicles or
other) or panels and meet the particular
demands of each installation. In this
way, the entire electrical installation will
have a uniform appearance.
The following cubicles are available:

◗ battery cubicles, 815 and 1015 mm

wide, 1.4 and 1.9 meters high;

◗ auxiliary cubicles, 815 mm wide, 1.4

and 1.9 meters high.

Electrical supervision

"Teleservice"

"Teleservice" is a contract offering
continuous remote supervision and
maintenance of UPS systems via a
modem. Real-time communication is
established with our "Teleservice"
centre for communication of all alarms
and events occurring in the installation.

GTC board

This electronic board provides user
access to the J-Bus communications
protocol. Using the data and address
tables provided, the user can customise
his installation.

GTC + software

The user has access to the J-Bus
protocol and, in addition, the associated
software acquires system parameters
(measurements, status conditions) and
transforms them into diagrams, alarm
messages and tables. With the click of
a mouse, the user can locally or
remotely supervise the UPS system
(comprising one or many UPS units).

Management of computer
networks

Integrated SNMP agent

This electronic board, installed in the
UPS system, enables direct connection
to all Ethernet networks using TCP/IP.
The UPSs may then be supervised via
the computer network. Furthermore,
they can be used to close system files
without having to add an external
SNMP agent.
This board is fully compatible with
"Solution Pac

TM

" software.

The RJ45 connector of the
communications option delivers
information using the SNMP protocol.
The sticker located on the board
indicates the UPS MAC address.

0080C8ABAA01

◗ your MAC address is written in the

following way : 0080C8 ZZ XX YY ;

◗ your default IP address is 168.8.xx.yy

(xx and yy are
decimal values of XX and YY).

For example, MAC address 00 80 C8
AB AA 01 is related to IP address

168.8.170.1.

Please refer to the "userman.doc"
user manual contained in the
directory "emb/galaxy/snmp/
release3.xx" of the Solution-Pac CD­ROM in order to discover the

management capabilities of your SNMP
MGE™ Galaxy™ PW UPS.
Please contact your sales
representative for more detailed
information.

Two-channel network board

This electronic board comprises two
ports, each of which may be user set,
either for the U-Talk protocol or as a
relay contact.
U-Talk is the protocol required to
establish contact with the
communications software.
Relay contacts may be used for specific
network applications (IBM AS400,
Novell, etc.).

40 - E-51028230XT/BG