Gtec Sirius 20 kVA User manual

UPS SIRIUS

I NTRODUCTION
Thank you for choosing this product.
Our company is specialized in the design, development and production of uninterruptible power supplies (UPS).
The UPS described in this manual is a high-quality, meticulously-designed product, built to guarantee the best
performance.
This manual contains detailed instructions on how to use and install the product.
For information on how to use your equipment to its full potential, this manual should be kept close at hand
beside the UPS and READ BEFORE STARTING TO WORK ON IT.
© Copying all or any part of this manual is strictly prohibited unless due authorization has been granted by the manufacturers.
In order to improve the product, the manufacturers reserve the right to make changes to it at any time and with no notice.

C ONTENTS
OVERVIEW 3
Sirius 3
F RONT V IEWS OF THE UPS 4
V IEW OF THE UPS C ONNECTIONS 5
R EAR V IEW OF THE UPS 6
V IEW OF THE C ONTROL P ANEL 8
B ATTERY B OX ( OPTIONAL ) 9
INSTALLATION 10
S TORING THE UPS AND THE B ATTERY B OX 10
P REPARING FOR INSTALLATION 10
P RELIMINARY I NFORMATION 10
E LECTROMAGNETIC C OMPATIBILITY 11
I NSTALLATION E NVIRONMENT 11
R EMOVING THE UPS AND THE B ATTERY B OX FROM THE P ALLET 12
P RELIMINARY C HECK OF C ONTENTS 13
I NSTALLING THE UPS AND THE B ATTERY B OX 13
S TEPS TO BE T AKEN TO G AIN A CCESS TO THE T ERMINALS OF THE UPS / B ATTERY B OX 13
E LECTRICAL C ONNECTIONS 14
W IRING DIAGRAMS FOR C ONNECTING TO THE E LECTRICAL S YSTEM 14
I NTERNAL P ROTECTIVE D EVICES OF THE UPS 17
E XTERNAL P ROTECTIVE D EVICES 18
C ROSS S ECTION OF THE C ABLES 19
C ONNECTIONS 19
C ONNECTIONS OF THE MODEL WITH SEPARATE BYPASS 20
R.E.P.O. 20
E XTERNAL S YNC 20
C ONNECTING THE R EMOTE M AINTENANCE B YPASS 21
C ONNECTING THE B ATTERY B OX TO THE UPS 23
M ULTIPLE E XPANSIONS 24
S ETTING THE R ATED B ATTERY C APACITY – S OFTWARE C ONFIGURATION 24
E XTERNAL T EMPERATURE P ROBE 24

USE 25
D ESCRIPTION 25
P RELIMINARY O PERATIONS 26
P OWERING ON FOR THE F IRST T IME 27
P OWERING ON FROM THE M AINS 28
P OWERING ON FROM THE B ATTERY 28
P OWERING OFF THE UPS 28
G RAPHIC D ISPLAY 29
D ISPLAY M ENUS 30
O PERATING M ODES 31
M AINTENANCE B YPASS (SWMB) 31
R EDUNDANT A UXILIARY P OWER S UPPLY FOR A UTOMATIC B YPASS 32
P ROGRAMMABLE A UXILIARY S OCKET ( POWER SHARE ) 32
P OWER WALK - IN 32
R EDUCING THE L OAD ( TO 200V AND 208V) 32
C ONFIGURING THE UPS 33
C OMMUNICATION P ORTS 35
RS232 AND USB C ONNECTORS 35
C OMMUNICATION S LOTS 35
AS400 P ORT 36
B UZZER 37
S OFTWARE 38
M ONITORING AND C ONTROL S OFTWARE 38
C ONFIGURATION S OFTWARE 38
TROUBLESHOOTING GUIDE 39
S TATUS / ALARM C ODES 43
TECHNICAL DATA 47

3
OVERVIEW
Sirius
The UPS in the Sirius 10 – 12 – 15 – 20 kVA series (VFI-SS-111 type) was designed using state-of-the-art
technology so as to ensure the best performance for the user. The use of the new control boards based on
multiprocessor architecture (DSL +  P inside) together with high-frequency IGBT technology ensures extraordinary
performance from both the input stage (absorbed current harmonic distortion ≤3%) and the output stage (output voltage
distortion ≤1%).
Due to its modern, innovative design, large graphic display and, above all, greater power provided by the battery charger
(up to 6A recharge), the Sirius series represents a new reference point in the world of three-phase UPS.
10 kVA 12 kVA 15 kVA 20 kVA
Rated power
Output power factor
Weight (including batteries)
10000 VA 12000 VA 15000 VA 20000 VA
9000 W 10800 W 13500 W 18000 W
0.9 0.9 0.9 0.9
180 Kg 182 Kg 190 Kg 195 Kg
Width x Depth x Height
320 x 840 x 930 mm
Options
Parallel kit – Separate bypass input –
Built-in isolation transformer – Built-in additional battery charger
Accessories
Battery cabinets – Communication boards – Remote synoptic panel

4
F RONT V IEWS OF THE UPS
Control panel with graphic display
Front door (to open the door, press and release
the area marked X )
From left:
Battery fuse holder isolator / Manual bypass
switch / Battery start button (COLD START) / 1/0
main power switch
From left:
Input switch / Separate bypass switch (optional) /
Output switch
Ventilation grid Terminal cover with ventilation grids
Wheels for moving the UPS Brake rod

5
V IEW OF THE UPS C ONNECTIONS
Power connections: BATTERY, INPUT, SEPARATE BYPASS (optional), OUTPUT
Connection for remote maintenance bypass command
Connection for external Battery Box temperature probe
Connection for external synchronization signal
Connection for R.E.P.O. (Remote Emergency Power Off) command
Slot for power relay board

6
R EAR V IEW OF THE UPS
Slots for accessory communication cards RS232 communication port
Powershare sockets
(max. total 10A on two sockets) USB communication port
Powershare socket thermal protector
(manual reset) Ventilation fans
Contact holder for AS400 Area for the parallel board (optional)

7
V IEW OF THE C ONTROL P ANEL
Mains power LED Battery low LED
Battery power LED ECO mode LED
Load on bypass LED Graphic display
Stand-by / alarm LED
F1, F2, F3, F4 = FUNCTION KEYS. The function of each key is indicated at the bottom of the display and
varies according to the menu used.

8
B ATTERY B OX ( OPTIONAL )
THE BATTERY BOX IS AN OPTIONAL ACCESSORY PROVIDED FOR THIS RANGE OF UPS (SAME SIZE AND
AESTHETIC DESIGN).
The Battery Box contains batteries that increase the operating time of the UPS during prolonged black-outs. The number
of batteries contained in it will vary according to the type of UPS to which the Battery Box is to be installed. The utmost
attention must be paid to ensure that the battery voltage of the Battery Box corresponds to that supported by the UPS.
Additional Battery Boxes may be connected in a chain to obtain the desired autonomy time during a power failure.
This series of Battery Box contains two separate strings of batteries, one with a positive voltage and the other with a
negative voltage with respect to the neutral terminal (N).
The basic diagram for the Battery Box is shown here below.
BT06-240A--
(1)
BT06-240M--
(1)
Rated voltage
Weight
240 + 240 Vdc 240 + 240 Vdc
150Kg 270Kg
Width x Depth x Height
320 x 840 x 930 mm
(1) The “-” symbol stands for an alphanumeric code for in-house use

9
UPS models 10 kVA 12 kVA 15 kVA 20 kVA
Rated power
10000 VA 12000 VA 15000 VA 20000 VA
Working temperature
0 ÷ 40 °C
Max. relative humidity during operation
90 % (non-condensing)
Max. height of installation
1000 m at rated power
(-1% Power for every 100 m above 1000 m)
max 4000 m
Dimensions L x D x H
320 x 840 x 930 mm
Weight (with batteries)
185 Kg 185 Kg 190 Kg 195 Kg
Power dissipated at rated resistive load
(pf=0.9) and with battery as buffer *
0.63 kW
540 kcal/h
2150 B.T.U./h
0.75 kW
645 kcal/h
2560 B.T.U./h
0.86 kW
740 kcal/h
2940 B.T.U./h
1.15 kW
990 kcal/h
3930 B.T.U./h
Power dissipated at rated distortion
load (pf=0.7) and with battery charged *
0.49 kW
420 kcal/h
1670 B.T.U./h
0.58 kW
500 kcal/h
1980 B.T.U./h
0.67 kW
580 kcal/h
2290 B.T.U./h
0.90 kW
775 kcal/h
3070 B.T.U./h
Flow rate of fans for removing heat from
installation room **
340 mc/h 400 mc/h 460 mc/h 615 mc/h
Current leak to earth ***
< 5 mA
Isolation protection
IP20
Cable input
From bottom / on rear
INSTALLATION
ALL THE OPERATIONS DESCRIBED IN THIS SECTION ARE TO BE PERFORMED EXCLUSIVELY BY
QUALIFIED STAFF.
The company declines all liability for damage caused by incorrect connections or operations not
described in this manual.
S TORING THE UPS AND THE B ATTERY B OX
The storage room must respect the following conditions:
Temperature: 0°÷40°C (32°÷104°F)
Relative humidity: max. 95%
P REPARING FOR INSTALLATION
P RELIMINARY I NFORMATION
* 3.97 B.T.U./h = 1 kcal/h
** To calculate the air flow rate, the following formula may be used: Q [m3/h] = 3.1 x Pdiss [Kcal/h] / (ta - te) [°C]
Pdiss is the power expressed in Kcal/h dissipated by all the devices installed in the installation environment.
ta= ambient temperature, te=outside temperature. To take leaks into account, the value obtained should be increased
by 10%.
The table shows an example of a flow rate with (ta - te)=5°C and a rated resistive load (pf=0.9).
(Note: This formula is applicable if ta>te, only; if not the UPS installation requires an air-conditioning system).
*** The leakage current of the load is to be added to that of the UPS on the earth wire.

10
E LECTROMAGNETIC C OMPATIBILITY
This Uninterruptible Power Supply (UPS) conforms to the class C2 specifications (in accordance with the provisions laid
down by the EN62040-2 standard: UPS - EMC requirement). In the home environment, it may cause radio interference.
The user may have to take supplementary measures.
This product is designed for professional use in industrial and commercial environments. Connections to the USB and
RS232 connectors should be made with the cables provided or, in any case, with shielded cables less than 3 metres
long.
I NSTALLATION E NVIRONMENT
When choosing the site in which to install the UPS and the Battery Box, the following points should be taken into
consideration:
 Avoid dusty environments
 Check that the floor is level and capable of withstanding the weight of the UPS and the Battery Box
 Avoid cramped environments that could impede the normal maintenance activities
 The relative humidity should not exceed 90%, non-condensing
 Check that the ambient temperature, with the UPS running, remains between 0 and 40°C
The UPS may be operated with an ambient temperature of between 0 and 40°C. The recommended
working temperature for the UPS and the batteries is between 20 and 25°C. In fact, if the battery has
an average life of 5 years with a working temperature of 20°C, the life is halved if the working
temperature is increased to 30°C.
 Avoid installing the equipment in places exposed to the direct sunlight or hot air
To keep the temperature of the installation room within the range indicated above, there must be a system for eliminating
the dissipated heat (the Kw / Kcal/h / B.T.U./h values dissipated by the UPS are indicated in the table above). The
methods that may be used are:
 Natural ventilation
 Forced ventilation, recommended if the outside temperature is less (e.g. 20°C) than the temperature at which
the UPS or Battery Box is to be operated (e.g. 25°C)
 Air-conditioning system, recommended if the outside temperature is higher (e.g. 30°C) than the temperature at
which the UPS or Battery Box is to be operated (e.g. 25°C)

11
A
B
A
A
A
R EMOVING THE UPS AND THE B ATTERY B OX FROM THE P ALLET
 Cut the straps and remove the
cardboard box by sliding it
upwards
 Remove the accessory box and
side blocks.
NOTE 1: You will find the
accessory box either inside the
door of the UPS or on top of the
UPS.
FRONT VIEW REAR VIEW
 Open the door and remove the
slides.
NOTE 2: The slides are fixed to
the pallet by a screw (marked C
B
in the figure).
C
B
B
 Remove the 4 brackets securing
A
A
A
the UPS to the pallet (the
screws are marked A and B in
A
the figures).
 Using 4 of the previously
removed screws (type A) secure
the slides to the pallet (as
shown). Push the UPS from the
rear off the pallet with great
care. Make sure that the door
is closed before doing this
NOTE: All parts of the packaging should be kept for future use.

12
P RELIMINARY C HECK OF C ONTENTS
Having opened the package, start by checking the contents.
UPS BATTERY BOX (optional)
Metal slides, Guarantee document, User manual,
Cd-rom containing the UPS management software,
Serial connecting cable, 4 battery fuses (to be
inserted in the "SWBATT" fuse holders)
Metal slides, Guarantee document, Cable for connecting
the Battery Box to the UPS, 4 battery fuses (to be
inserted in the "SWBATT" fuse holders)
I NSTALLING THE UPS AND THE B ATTERY B OX
When installing the equipment, the following points should be considered:
 The wheels are to be used exclusively for fine positioning, and thus for small distances only.
 The plastic parts and the door are not to be used for gripping or pushing the UPS.
 Sufficient space should be left in front of the equipment for it to be turned on/off and maintenance operations to
be performed on it ( ≥1.5 mt )
 The rear part of the UPS should be set at least 30 cm from the wall, to enable the air blown by the ventilation
fans to flow away correctly
 No objects should be left on its top surface
Having set the equipment in position, secure it by engaging the brake rod (see "Front Views of the UPS" point 8) situated
below the connecting terminals.
S TEPS TO BE T AKEN TO G AIN A CCESS TO THE T ERMINALS OF THE UPS / B ATTERY B OX
The operations indicated below are to be performed with the UPS disconnected from the mains
powers, turned off and with all the switches and fuse holders of the equipment open.
Follow the instructions provided below to open the UPS:
 Open the door by pressing on the top right-hand area of the door
 Remove the terminal and switches cover (see "Front Views of the UPS" ref. 7)
Having completed the installation operations inside the equipment, replace the terminal cover and close the door.

13
E LECTRICAL C ONNECTIONS
WARNING: a 4-wire three-phase distribution system is required.
The standard version of the UPS should be connected to a power supply line made up of 3 phases + neutral +
PE (protective earth) of the TT, TN or IT type (in accordance with the IEC 60364-3 standard); the phase
rotation must therefore be respected.
There are (optional) TRANSFORMER BOXES to convert the distribution systems from 3 wires to 4 four wires.
W IRING DIAGRAMS FOR C ONNECTING TO THE E LECTRICAL S YSTEM
UPS without any variation in neutral condition
UPS with galvanic isolation at input
UPS with galvanic isolation at output

14
UPS without any variation in neutral condition and with separate bypass input
UPS with galvanic isolation and with separate bypass input
UPS with galvanic isolation at output and separate bypass input
Separate bypass:
if the separate bypass option is present, protective devices must be present on both the main power supply line and the

15
bypass line.
Note: the neutral of the input line and that of the bypass are commoned inside the equipment, so they must refer to the
same potential. If the two power supplies were different, an isolation transformer would have to be used on one of the
inputs.
UPS without any variation in neutral condition and with separate bypass input
connected to independent power supply line
UPS with separate bypass input on independent power supply line
and with galvanic isolation at input
UPS with separate bypass input connected to independent power supply line
and with galvanic isolation at output

16
I NTERNAL P ROTECTIVE D EVICES OF THE UPS
The table below shows the sizes of the isolators of the UPS and the sizes of the battery fuses (SWBATT): these devices
are accessible from the front of the UPS.
There are also indications about the internal fuses (not accessible) protecting the input and output lines and the
maximum input and rated output currents. To install the UPS, see the block diagram in the “USE” section of the
“Description” paragraph.
Fuses are to be replaced with ones of the same size and the characteristics indicated in the table below.
Isolators and internal protective devices
UPS
mod.
Non-automatic switches Fuses
[kVA]
UPS input /
Separate bypass
UPS output /
Maintenance
Rectifier input
fuse
Battery fuse Output fuse
Input
current
[A]
Output
current
[A]
SWIN / SWBYP
(optional)
SWOUT / SWMB SWBATT
Max *
Rated
10 40A(4P) 40A(4P)
25A gF 500V
(6.3x32)
32A gG 400V
(10x38)
25A gF 500V
(6.3x32)
20A 15A
12 40A(4P) 40A(4P)
25A gF 500V
(6.3x32)
32A gG 400V
(10x38)
25A gF 500V
(6.3x32)
24A 17A
15 63A(4P) 63A(4P)
2 x 20A gF
500V (6.3x32)
50A gG 400V
(14x51)
2 x 20A gF
500V (6.3x32)
29A 22A
20 63A(4P) 63A(4P)
2 x 20A gF
500V (6.3x32)
50A gG 400V
(14x51)
2 x 20A gF
500V (6.3x32)
38A 29A
* The max. input current refers to a rated load (PF = 0.9) and an input voltage of 346V,
and a battery charger charged with 4A.
SHORT CIRCUIT
If a failure occurs on the load, the UPS protects itself by limiting the value and duration of the current output (short-circuit
current). These values also depend on the operating status of the UPS at the time of the failure; there are two different
cases:
 UPS in NORMAL OPERATION: the load is switched instantaneously to the bypass line (I
2
t=11250A
2
s): the
input line is connected to the output without any internal protection (blocked after t>0.5s)
 UPS in BATTERY OPERATION: the UPS protects itself by providing a current equivalent to about 1.5 times the
rated current for 0.5s and turns itself off after this time has elapsed
BACKFEED
The UPS has internal protection against backfeed through metal separating devices.
There is an output on the relay board (optional) for activating a releasing device to be installed upstream from the UPS.
The UPS has an internal device (redundant bypass power supply) which, when a failure occurs on the
machine, activates the bypass automatically, thus keeping the load powered without any internal protection
and without any limitation to the power supplied to the load.
Under these emergency conditions, any disturbance present on the input line will affect the load.
See also the “USE” section of the “Redundant Auxiliary Power Supply for Automatic Bypass” paragraph.

17
E XTERNAL P ROTECTIVE D EVICES
AUTOMATIC CIRCUIT BREAKER
As illustrated previously, the UPS is equipped with protective devices for failures both inside and at the output.
When connecting the mains power supply, ensure that a type B or C (time curve) breaker is installed upstream of the
UPS in accordance with the EN 60947-2 standard, as indicated in the table below:
Automatic external protective devices
UPS mod. Mains input Separate bypass input (optional)
10 40A 40A
12 40A 40A
15 63A 63A
20
63A
63A
If the protective device upstream from the UPS interrupts the neutral wire, it must also interrupt all the phase
wires at the same time (four-pole switch).
Output protections (recommended values for discrimination)
Normal fuses (GI) In (Nominal current)/7 In (Nominal current)/7
Normal switches (C curve) In (Nominal current)/7 In (Nominal current)/7
Ultra-fast fuses (GF) In (Nominal current)/2 In (Nominal current)/2
DIFFERENTIAL
In the standard version, with no separating transformer at the input, the neutral from the power supply network is
connected to the neutral of the UPS output, the neutral condition of the system is not modified:
THE UPS INPUT NEUTRAL IS CONNECTED TO THE UPS OUTPUT NEUTRAL
THE DISTRIBUTION SYSTEM THAT POWERS THE UPS IS NOT MODIFIED BY THE UPS
The neutral condition is only modified if an isolation transformer is present or when the UPS works with a
neutral isolated upstream.
Avoid connecting the output neutral to the input neutral or the earth as this could cause damage to the
UPS.
Make sure that the equipment is connected correctly to the input neutral because as damage may be
caused to the UPS.
During operation with the mains supply present, a differential switch (RCD) at the input to the UPS will activate should a
fault occur on the output side as the output circuit is not isolated from the input circuit.
In any case, other differential switches may still be installed on the output, preferably in coordination with those present
at the input.
The differential switch located upstream must have the following characteristics:
 Differential current adequate for the sum of the UPS load; we recommend a suitable margin be kept to prevent
unwanted activation (100mA min. - 300mA recommended)
 Type B or type A
 Delay of at least 0.1s

18
C ROSS S ECTION OF THE C ABLES
We recommend the INPUT/OUTPUT and BATTERY cables be passed under the UPS.
To determine the minimum cross section of the input and output cables, see the table below:
Cross section of cables (mm2)
*
INPUT
mains /
separate bypass (optional)
OUTPUT BATTERY
**
(optional)
kVA PE L1/L2/L3 N PE L1/L2/L3 N PE +/- N
10 4 2.5 4 4 2.5 4 4 4 4
12 6 4 6 6 4 6 6 6 6
15 6 4 6 6 4 6 6 6 6
20 10 6 10 10 6 10 10 10 10
*
The cross sections indicated in the table refer to a maximum length of 10 metres
**
The maximum length of the cables for connecting the Battery Box (optional) is 3 metres
Note: the maximum cross section of the cables that may be inserted in the terminal board is:
 10mm2 for cables with lugs
 16mm2 for bare cables
C ONNECTIONS
The first wire to be connected is the protective earth wire, which is to be inserted in the terminal
marked PE. During operation the UPS must be connected to the earthing system
Connect the input and output cables to the terminal board as indicated in the figure below:
THE INPUT NEUTRAL MUST ALWAYS BE CONNECTED
DO NOT CONNECT THE OUTPUT NEUTRAL TO THE INPUT NEUTRAL
Note: the connections to the BATTERY module must only be made if the Battery Box (optional) is present.