Salicru EQUINOX EQX2 2001-S User manual

EQX2 4002-T, EQX2 5002-T, EQX2 6002-T,
EQX2 8002-T, EQX2 10002-T, EQX2 12002-T,
EQX2 15002-T,EQX2 17002-T,EQX2 20002-T,
EQX2 25002-T,EQX2 33004-T,EQX2 40004-T,
EQX2 50004-T, EQX2 100010-T
EN
USER MANUAL
THREE-PHASE SOLAR INVERTERS CONNECTED TO THE GRID

48 SALICRU

49
EN
Indice General
1. INTRODUCTION
1.1. THANK-YOU LETTER
2. SAFETY INFORMATION
2.1. USING THIS MANUAL
2.2. NOTES ON SAFETY.
2.3. CONVENTIONS AND SYMBOLS
2.3.1. Explanation of the symbols.
3. QUALITY ASSURANCE ANDSTANDARDS
3.1. MANAGEMENT STATEMENT
3.2. STANDARDS
3.3. ENVIRONMENT
4. PRODUCT DESCRIPTION.
4.1. BASIC FEATURES.
4.1.1. Function.
4.1.2. Models.
4.1.3. Applicable neutral points.
4.1.4. Storage conditions.
4.2. DIAGRAMS
4.2.1. 2 MPPT units (EQX2 4002-T .. EQX2 25002-T).
4.2.2. 4 MPPT units (EQX2 33004-T, EQX2 40004-T and
EQX250004-T).
4.2.3. 10 MPPT units (EQX2 100010-T).
4.3. SCREEN INTERFACE AND WIFI MODULE.
4.4. PACKING LIST.
5. INSTALLATION
5.1. LOCATION.
5.1.1. Installation location.
5.1.2. Recommended installation distances.
5.2. ASSEMBLY PROCESS.
5.2.1. 2 MPPT units (EQX2 4002-T .. EQX2 25002-T).
5.2.2. 4 MPPT units (EQX2 33004-T, EQX2 40004-T and
EQX250004-T) and 10 MPPT units (EQX2 110010-T).
5.3. ELECTRIC CONNECTION.
5.3.1. External earthing connection.
5.3.2. Solar field connection.
5.3.3. Connecting the AC outlet.
5.4. INSTALLATION OF THE MONITORING DEVICE.
5.4.1. Mechanical installation.
5.5. RS485 CONNECTION.
5.5.1. Description of the terminals.
5.5.2. Wiring steps.
5.6. GENERAL INSTALLATION DIAGRAM.
6. START-UP AND SHUTDOWN.
7. SYSTEM OPERATION.
7.1. SYSTEM FIRMWARE UPDATE.
7.2. DESCRIPTION OF THE SCREENS.
7.3. ON-LINE MONITORING OF THE INSTALLATION.
7.3.1. Download and register the "EQX-sun" app.
7.3.2. Configuration of the installation (plant) in the EQX-sun app.
7.3.3. "12h" Monitoring (Day).
7.3.4. "24h" monitoring. (Day and night).
7.3.5. Operation of the EQX-sun app.
7.3.6. Individual plant screen.
8. TROUBLESHOOTING GUIDE
8.1. ERROR MESSAGES.
8.2. TROUBLESHOOTING.
8.3. MAINTENANCE.
9. TECHNICAL FEATURES.
9.1. 2 MPPT UNITS.
9.2. 4 AND 10 MPPT UNITS.
10. ANNEX. WIFI MODULE SETUP.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

50 SALICRU
SALICRU
1. INTRODUCTION
1.1. THANK-YOU LETTER
We would like to thank you for purchasing this product. Read this
instruction manual carefully in order to familiarise yourself with its
contents. You will get the most out of the unit, achieve a higher
degree of satisfaction and guarantee high levels of safety the more
you understand the unit.
Please do not hesitate to contact us for any further information or
any questions you may have.
Yours sincerely,
•The unit described in this manual can cause serious
physical injury if handled incorrectly. Therefore, the unit
must only be installed, serviced and/or repaired by our staff or
by qualified personnel.
•Although every effort has been made to guarantee that the
information in this user manual is complete and accurate,
weare not responsible for any errors or omissions that may
be present.
The images included in this document are for illustrative
purposes only and may not accurately represent the parts of
the unit shown. Images are not binding and may be modified
without notice. However, any differences will be reduced or
resolved through the correct labelling on the unit.
•In line with our policy of continuous development, we
reserve the right to modify the specifications, operating
principle or actions described in this document without
prior notice.
•The reproduction, copying, transfer to third parties,
modification or translation in full or in part of this manual
or document, in any form or by any means, without prior
written consent from our company, is prohibited, with us
reserving the full and exclusive right of ownership to it.

51
EN
2. SAFETY INFORMATION
2.1. USING THIS MANUAL
•This user manual applies to the units described on the cover
and intends to be a guide that describes the installation and
start-up instructions under safe conditions and in accordance
with the standards. Please read the entire manual before
carrying out any action, procedure or operation with the unit,
especially before applying voltage to the input, respecting the
actions in the order shown in this manual.
•Compliance with the "Safety instructions" is
mandatory; therefore, the user will be legally
responsible for observing and applying them at all times.
•If you do not fully or partially understand the
instructions, especially those relating to safety,
you should not proceed to install or commission the unit,
since this may pose a risk to your safety or that of other
people, with the possibility of causing serious injury and
even death , in addition to causing damage to the
equipment and/or to loads and the installation .
•Local electrical regulations and different restrictions
at the customer's location may invalidate some
recommendations contained in the manuals. Where
discrepancies exist, the relevant local regulations must
befollowed.
•All units are supplied with the corresponding labels to
guarantee the correct identification of each part. In addition,
the user can refer to the user manual at any time during
installation or start-up operation, which provides clear,
well-organised and easy-to-understand information.
•Finally, once the unit is installed and in operation, we
recommend that you keep the documentation in a safe place
that is easy to access, in case of any future queries that
mayarise.
The following terms are used interchangeably in the document to
refer to:
•"EQX2-T, equipment or unit".- Equinox2 photovoltaic
inverter.
•"T.S.S.".- Technical Service and Support.
•"Customer, installer, operator or user".- They are used
interchangeably and, by extension, to refer to the installer
and/or the operator who will carry out the corresponding
actions, whereby the responsibility for carrying out the
respective actions may be held by the same person when they
act on behalf or in representation of the installer or operator.
2.2. NOTES ON SAFETY.
1. Before installation, read this manual carefully and strictly
follow its instructions.
2. Installers must receive professional training or obtain
certificatesof professional qualification related to electricity.
3. During installation, do not open the front cover of the inverter.
In addition to carrying out work on the wiring terminal
(asindicated in this manual), touching or changing components
without authorisation may cause personal injury, damage to
the inverters, and void the warranty.
4. All electrical installations must comply with local electrical
safetyregulations.
5. If the inverter needs maintenance, please contact the
designated technical personnel for installation and
maintenance.
6. To use this inverter connected top the grid to generate power,
permission from the local power supply authority is required.
7. The temperature of some parts of the inverter may
exceed 60°C during operation. To avoid burns, do not
touch the inverter during operation. Let it cool down before
doing so.
8. When exposed to sunlight, the solar field generates
adangerously high DC voltage. Operate in accordance
with the instructions in manual, danger of death .
2.3. CONVENTIONS AND SYMBOLS
The table below shows the symbols that may appear in this manual
and their definition:
Danger
Hazardous situation which, if not avoided, could result in
deathor serious injury to personnel.
Warning
Potentially hazardous situation which, if not avoided,
couldresult in death or serious injury to personnel.
Caution
Potentially hazardous situation which, if not avoided,
couldresult in minor or moderate injury to personnel.
Attention
Safety warning information about the equipment or the
environment, to prevent damage to the equipment, data loss,
degradation of performance or other unpredictable results.
Note
This symbol highlights important information, best practices
and tips, etc.
Tab. 1. Symbols used in this manual.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

52 SALICRU
2.3.1. Explanation of the symbols.
This chapter explains the symbols that appear on the inverter,
labeland packaging.
2.3.1.1. Symbols on the inverter.
Inverter status indicator.
Inverter operation indicator.
Earthing connection symbol, the inverter housing must be
properly earthed.
Tab. 2. Inverter symbols.
2.3.1.2. Inverter label symbols.
The inverter may not be disposed of with household waste.
Please read the instructions carefully before installation.
Do not touch any internal part of the inverter for 5 minutes
after it has been disconnected from the grid and from the
photovoltaic input.
CE marking, the inverter meets the requirements of the
applicable CE directives.
SGS certification.
Danger. Risk of electric shock.
Do not touch. Hot surface during operation.
Danger of electric shock, live parts, risk of electric shock,
do not touch.
Tab. 3. Labelling symbols.
2.3.1.3. Packaging symbols.
Handle with care.
Indicator of the correct direction of the packaging.
Earthing connection symbol, the inverter housing must be
properly earthed.
6Stacked layers 6.

53
EN
3. QUALITY ASSURANCE
ANDSTANDARDS
3.1. MANAGEMENT STATEMENT
Our aim is to satisfy our customers. Management has established
a Quality and Environmental Policy for such purposes. Asare-
sult, a Quality and Environmental Management System will be
implemented, which will ensure that we are compliant with the
requirements of the ISO 9001 and ISO 14001 standards and that
we meet all customer and stakeholder requirements.
The company management is also committed to the development
and improvement of the Quality and Environmental Management
System, through:
•Communication to the entire company of the importance of
meeting both the customer’s requirements, and legal and
regulatory requirements.
•Dissemination of the Quality and Environmental Policy and
setting of the Quality and Environment targets.
•Management reviews.
•Provision of the necessary resources.
3.2. STANDARDS
The product isdesigned, manufacturedand marketed inaccordance
with the ISO 9001 Quality Assurance standard. The mark
indicates conformity with the EEC Directives through application
of the following standards:
•2014/35/EU. - Low voltage directive.
•2014/30/EU directive - Electromagnetic compatibility -CEM-.
•2011/65/EU.- Restriction ofhazardous substances in electrical
and electronic equipment (RoHS).
•2012/19/EU. - Waste electrical and electronic equipment
(WEEE).
Grid connection laws in Spain:
•Royal Decree RD647/2020, which regulates aspects
necessary for the implementation of the grid connection codes
of certain electrical installations.
•Royal Decree RD244/2019, which regulates the administra-
tive, technical and economic conditions of self-consumption of
electrical energy
According to the specifications of the corresponding harmonised
standards. Reference standards:
Electrical safety:
•IEC/EN/UNE 62109-1:2010. Safety of power converters
for use in photovoltaic power systems. Part 1: General
requirements.
•IEC/EN/UNE 62109-2:2011. Safety of power converters
for use in photovoltaic power systems. Part 2: Particular
requirements for inverters.
Electromagnetic compatibility:
•IEC/EN/UNE 61000-6-2:2005. Electromagnetic compatibility
(EMC). Part 6-2: Generic standards. Immunity in industrial
environments.
•IEC/EN/UNE 61000-6-3:2007/A1:2011. Electromagnetic
compatibility (EMC). Part 6-3: Generic standards. Emission
standard for residential, commercial and light-industrial
environments.
Efficiency:
•IEC/EN/UNE 61683:1999. Photovoltaic systems. Power
conditioners. Procedure for measuring efficiency.
Environment:
•IEC/EN/UNE 60068-2-1:2007 / IEC/EN/UNE 60068-2:2007 /
IEC/EN/UNE60068-14:2009/IEC/EN/UNE60068-30:2005.
Environmental tests. Cold/Dry heat/Temperature changes/
Cyclic heat.
Grid connection:
•IEC/EN/UNE62116:2014. Utility-interconnected photovoltaic
inverters. Test procedure of islanding prevention measures.
•IEC 61727:2004. Photovoltaic (PV) systems - Characteristics
of the utility interface.
•(EU) 2016/631 Commission Regulation of 14 April 2016
establishing a network code on requirements for grid
connection of generators.
Only for installations in Spain :
•UNE217002:2020. Inverters for connection to the distribution
network. Testing of requirements for DC grid injection,
overvoltage generation and island operation detection system.
•UNE 217001:2020. Tests for systems intended to avoid the
energy transmission to the distribution network.
•NTS631. Technical note on compliance supervision for
electricity generation modules according to regulation
(EU) 2016/631.
The manufacturer shall not be held responsible for any
damage caused by the user altering or tampering with the
unit in any way.
The EC declaration of conformity for the product is
available for the customer and can be requested from our
head office.
3.3. ENVIRONMENT
This product has been designed with the protection of the
environment in mind and has been manufactured in accordance
with the ISO 14001 standard.
Recycling the unit at the end of its useful life:
Our company commits to using the services of approved companies
that comply with the regulations in order to process the recovered
product at the end of its useful life (please contact your distributor).
Packaging:
To recycle the packaging, follow the applicable legal regulations,
depending on the particular standards of the country where the
unit is installed.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

54 SALICRU
4. PRODUCT DESCRIPTION.
4.1. BASIC FEATURES.
4.1.1. Function.
The inverter of the EQX2-T series is a three-phase grid-connected
photovoltaic inverter used to efficiently convert the DC power
generated by the photovoltaic string into AC power, so it can be
injected into the grid.
4.1.2. Models.
The EQX2-T series of three-phase inverters has the following models:
•EQX2 4002-T
•EQX2 5002-T
•EQX2 6002-T
•EQX2 8002-T
•EQX2 10002-T
•EQX2 12002-T
•EQX2 15002-T
•EQX2 17002-T
•EQX2 20002-T
•EQX2 25002-T
•EQX2 33004-T
•EQX2 40004-T
•EQX2 50004-T
•EQX2 100010-T
4.2. DIAGRAMS
4.2.1. 2 MPPT units (EQX2 4002-T .. EQX2 25002-T).
410 mm.
550 mm.
Logo
Display
Fig. 2. Front view.
Nameplate
175 mm.
410 mm.
Fig. 3. Side view.
4.1.3. Applicable neutral points.
The applicable neutral points for the models of the EQX2-T series
are TN-S, TN-C, TN-C-S, TT and IT. When applied to a TT grid, the
voltage from N to PE should be less than 30 V. For more details,
refer to Fig. 1:
EQX2-T
EQX2-T
EQX2-T
EQX2-T
TN-S
TT IT
L1
L2
L3
N
PE
L1
L2
L3
N
L1
L2
L3
PE
PE PE
PE PE
L1
L2
L3
PEN
L1
L2
L3
N
PE
TN-C TN-C-S
EQX2-T
Fig. 1. Applicable neutral points.
4.1.4. Storage conditions.
•The inverter must be stored in its original packaging.
•The temperature and humidity should be between -30ºC and
+60ºC, and less than 90%, respectively.
•If it is necessary to stack a group of inverters, the height of
each stack should not exceed 6 levels.

55
EN
175 mm.
   
Fig. 4. Bottom view.
Rear
rail
Vent
valve
Fig. 5. Rear view.
4.2.2. 4 MPPT units (EQX2 33004-T, EQX2 40004-T
and EQX2 50004-T).
600 mm
400 mm
Logo
Display
Fig. 6. Front view.
Nameplate
400 mm
270 mm
Fig. 7. Side view.
270 mm
  



Fig. 8. Bottom view.
Rear
rail Rear
rail
Rear
rail Rear rail
Fig. 9. Rear view.

EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

56 SALICRU
4.2.3. 10 MPPT units (EQX2 100010-T).
975 mm
680 mm
Logo Display
Fig. 10. Front view.
Nameplate
290 mm
680 mm
Fig. 11. Side view.

57
EN
290 mm
  



Fig. 12. Bottom view.
Rear
rail
Rear
rail
Rear
rail Rear
rail
Fig. 13. Rear view.
The connection terminals are located at the bottom of the unit,
asshown in the following table:
Item Terminal Note
DC switch On/Off switch
DC input terminal PV Connector
COM1 port WiFi/LAN/GPRS/4G connector
COM2/COM3 port CT/RS485/DRED connector
AC output terminal Connection for AC output
Tab. 4. Connection terminals.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

58 SALICRU
4.3. SCREEN INTERFACE AND WIFI
MODULE.



Fig. 14. Synoptic chart view.

Fig. 15. Wi-Fi module view.
Indicator Item Status Description Solution
On indicator 
Off No voltage detection or input voltage too low.
Slow flash Inverter On, waiting for grid connection.
Fast flash Grid detected. Self-test mode.
On Normal, connected to the grid and generating energy.
OLED display On Displays inverter operation information.
Off If there is no response when pressing the button, the screen is
faulty or not connected properly.
Button (Physical) Change the information on the OLED screen and set the
parameters with a short press and long press.
Alarm
indicator
On The communication between the inverter and the server is normal.
However, the inverter reports an error.
Check the guide for more information about common faults
and troubleshooting.


Off
The WiFi module is not properly connected to the inverter's
"Com" port. The WiFi module is restored.
Check if the WiFi module is connected properly to the inverter.
Remove and insert the Smart Dongle; Restart the inverter.
Changed router or password. The WiFi signal is too weak at the
place of installation.
Remove and insert the Smart Dongle; configure the WiFi module,
move the router closer to the inverter. Register the user account.
Slow flash The WiFi module is not connected to the router. 1. Remove and insert the WiFi module.
2. Reload WIFI3. Configure the WiFi module again.
Off
Fast flash The WiFi module connects to the router, but not to the server Check that the router has an Internet connection.
Check that the firewall is not blocking port 5743.
On
Off Communication between inverter and server is normal. Communication is normal.
On
Tab. 5. Synoptic chart elements and WiFi module.

59
EN
4.4. PACKING LIST.
The packaged inverter includes the following accessories. Check
that all of the accessories supplied with the inverter are included
when you receive the package. Refer to the packing list in Tab. 6.
12
34
56
78
910
11 12
13 14
15 16
17 18
19
Fig. 16. Items included in the packaging.
Item Description 2
MPPTs
4
MPPTs
10
MPPTs
1Inverter 1 1 1
2Wall mounting bracket 1 0 0
3Wall mounting bracket 0 1 0
4Wall mounting bracket 0 0 1
5Screws and plugs 4 0 0
63-pin connector 2 0 0
7Support screw 0 4 6
8Terminal resistance 120 Ω0 1 0
9Terminal pairs PV (+ and –) 2 (1), 3 (2)
or 4 (3) 820
10 WiFi module 1 1 1
11 AC terminal 1 0 0
12 Earthing terminal 1 0 0
13 Meter communication terminal 0 1 0
14 RS485 communication terminal 0 1 0
15 AC terminal 0 1 0
16 6-pin terminal 1 0 1
17 Ring spanner 0 0 1
18 L-shaped plate 1 0 0
19 User manual 1 1 1
(1) 4 to 12 kW units
(2) 15 kW units
(3) 17 to 25 kW units
2 MPPT units: EQX2 4002-T, EQX2 5002-T, EQX2 6002-T, EQX2 8002-T,
EQX210002-T, EQX2 12002-T, EQX2 15002-T, EQX2 17002-T, EQX2 20002-T
andEQX2 25002-T.
4 MPPT units: EQX2 33004-T, EQX2 40004-T and EQX2 50004-T.
10 MPPT units: EQX2 100010-T.
Tab. 6. Packing list.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

60 SALICRU
5. INSTALLATION
5.1. LOCATION.
The inverters of the EQX2 series have been designed with an
enclosure with IP65 degree of protection, suitable for indoor and
outdoor installations. The following factors should be taken into
account when selecting an installation location for the inverter:
1. The wall on which the inverters are mounted must be able to
support the weight of the inverter.
2. The inverter must be installed in a well-ventilated environment.
3. Make sure that the inverter is not exposed directly to strong
sunlight to avoid operation at excessive temperatures.
Theinverter should be installed in a place sheltered from direct
sunlight and rain.
4. Install the inverter at eye level for easy reading of the data on
thescreen and better maintenance.
5. The ambient temperature of the place where the inverter is
installed must be between -30ºC and +60ºC.
6. The surface temperature of the inverter can reach up to 75ºC.
To avoid the risk of burns, do not touch the inverter during
operation and install it out of the reach of children.
5.1.1. Installation location.
We recommend installing inverters indoors. However, if
there is no choice but to install outdoors, in Fig. 17 shows
recommended locations, as well as those to avoid:
Fig. 17. Recommended locations for the inverter.
Warning
Do not store flammable and/or explosive materials near
the inverter.
5.1.2. Recommended installation distances.
Installation angle and spacing: Check that the inverter is
installed on a vertical surface and that it keeps the following
minimum safety distances with respect to other elements for
optimal ventilation, as shown in Fig. 18:
Fig. 18. Recommended installation distances.
A B
EQX2 4002-T .. EQX2 25002-T
500
300
EQX2 33004-T, EQX2 40004-T,
EQX2 50004-T 800
EQX2 100010-T 1000
5.2. ASSEMBLY PROCESS.
Steps:
5.2.1. 2 MPPT units (EQX2 4002-T .. EQX2 25002-T).

61
EN
5.2.2. 4 MPPT units (EQX2 33004-T, EQX2 40004-T
and EQX2 50004-T) and 10 MPPT units
(EQX2 110010-T).
12 mm
For 4 MPPT units:
Handle
Handle
For 10 MPPT units:
Handle
Handle
5.3. ELECTRIC CONNECTION.
Danger
An excessively high voltage on the conductive part of
the inverter may cause electric shock. When installing
the inverter, make sure that the AC and DC sides of the
inverter are completely de-energised.
Warning
Do not connect the positive or negative poles of the
photovoltaic panel to earth, since this may cause major
damage to the inverter.
Warning
Static electricity can damage the inverter's electronic
components. Take the necessary anti-static measures
during installation and maintenance.
Attention
Do not use terminals of different manufacturers or of
different types, other than those included in the
accessory pack. SALICRU shall not be held liable for any
form of damage caused by the use of unauthorised terminals.
Attention
Moisture and dust can damage the inverter; check that
the cable gland is tight enough during installation.
Thewarranty will be void if the inverter is damaged as
a result of an improperly installed cable gland.
5.3.1. External earthing connection.
Danger
Do not connect the neutral N wire as a protective
earthing wire to the inverter housing. This may cause
electric shock.
Attention
An optimal earthing connection can withstand resist surge
discharges and improve EMI performance. Inverters must
be properly earthed.
For systems with a single inverter, the PE wire must
beearthed.
For a multi-inverter system, all PE cables from the
inverters must be connected to the same copper earthing
bar to ensure equipotential bonding.
Steps for connecting the terminal to earth:
1. The external earthing connection terminal is located on the
lowerright side of the inverter.
2. Fasten the earthing connection terminal to the PE cable with
asuitable tool and lock the earthing connection terminal to
the earthing connection hole on the bottom right side of the
inverter as shown in Fig. 19, Fig. 20, Fig. 21.
3. The cross-sectional area of the external earthing wire is 4 mm2.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

62 SALICRU
5.3.1.1. 2 MPPT units (EQX2 4002-T .. EQX2 25002-T).
Fig. 19. Earthing terminal connection.
5.3.1.2. 4 MPPT units (EQX2 33004-T,
EQX2 40004-T and EQX2 50004-T).
Fig. 20. Earthing terminal connection.
5.3.1.3. 10 MPPT units (EQX2 110010-T).
Fig. 21. Earthing terminal connection.
5.3.2. Solar field connection.
1. The following must be taken into account when making the
electrical connections to the inverter:
a. Disconnect the AC switch on the grid side.
b. The inverter's DC switch must be set to "OFF".
c. To ensure that the best practices are followed, check that
the photovoltaic panels connected in each string are of
thesame model and specifications.
d. Check that the maximum output voltage of each
photovoltaic string does not exceed the maximum voltage
specified in the table of technical characteristics in the
section "9. Technical features.".
e. Insert the relevant DC circuit breakers, according to the
following Tab. 7:
f. A distance of 5 m must be left between the circuit breakers
and the unit.
Model Isolating
switch Fuses
Overvoltage
circuit breaker
If no
lightning
rod is
installed
If lightning
rods are
installed
or there
is a high
probability
of lightning
EQX24002-T
EQX2 5002-T
EQX2 6002-T
EQX2 8002-T
EQX2 10002-T
EQX2 12002-T
EQX2 15002-T
EQX2 17002-T
EQX2 20002-T
EQX2 25002-T
Built into
the unit
1000 Vdc
15 A
fuses Type II
40 kA
600Vdc
Type I+II
5 kA
1000 Vdc
EQX2 33004-T
EQX2 40004-T
EQX2 50004-T
1000 Vdc
15 A
fuses,
1 per
string
EQX2 100010-T
Tab. 7. DC circuit breakers.
2. DC connector assembly procedure.
a. Select the suitable photovoltaic cable:
Type of cable Cross-section area
General
photovoltaic
cable
Range (mm2)Recommended value (mm2)
2,5 - 4,0 4,0
Tab. 8. Selecting the photovoltaic cable.
b. Strip 7 mm of the insulation sleeve of the DC cable,
asshown in Fig. 22:
7 mm
Cable cross-section 2.5-4 mm2
Fig. 22. Wire end stripping.

63
EN
c. Remove the connector from the accessory bag, as shown
in Fig. 23:
Fig. 23. Disassembling the connector.
d. Insert the DC cable through the DC connector nut on the
metal terminal and press the terminal with professional
crimping pliers (pull the cable to check if the terminal is
well connected to the cable), as shown in Fig. 24:
To ensure an optimal connec-
tion, use an approved tool to
crimp the terminals.
Fig. 24. Crimping the cable.
e. Insert the positive and negative cables into the
corresponding positive and negative connectors, pull the
DC cable to make sure that the terminal is well connected
to the connector.
f. Use an open-end wrench to screw the nut all the way in
andmake sure that the terminal is sealed well, as shown
in Fig. 25:
Use the special wrenches for
MC4 connectors to ensure
that the correct tightening
torque is applied, without
damaging the connectors.
Fig. 25. Using an open-end wrench.
Warning
Before assembling the DC connector, make sure that
thecable has the correct polarity.
Warning
Use a multimeter to measure the DC input string
voltage, check the polarity of the DC input cable,
and make sure that the voltage of each string is
within the 600 V range.
See the "Input" section in Tab. 15.
3. Connect the cables to the inverter as shown in the following
connection diagrams:
a. Connection for installations with a single
solarfield (panels in the same direction and
strings of equal length):
Solar panels that make up a string must have the
same technical characteristics.
Connect the strings to each of the unit's inputs, taking
into account the input limits specified in the section
"9. Technical features." The following diagram is
aconnection example for a 4 to 12 kW unit:
Solar
field A
Solar
field B
EQUINOX_2 1
2
3
1
2
3
L1
L2
L3
N
Port 1
MPP Ts1 MPPT2
Port 2
USB / WiFi
SPD
FUS
JUNCTION BOX
2 MPPTs
Fig. 26. Single solar field connection, 2 strings and
2MPPTs.
In Fig. 28 shows the connection for a 4 to 12 kW unit
in case it is necessary to connect a string whose
panels exceed the maximum intensity permitted perstring.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

64 SALICRU
Solar field
EQUINOX_2 1
2
3
1
2
3
L1
L2
L3
N
Port 1
MPP Ts1 MPPT2
Port 2
USB / WiFi
SPD
FUS
JUNCTION BOX
2 MPPTs
Fig. 27. Single solar field connection, 1 string and
2MPPTs.
It is recommended to choose the solar panels that
are suitable for each inverter, not exceeding the
maximum values specified in the section "9. Technical
features."
b. Connection for installations with solar
fields of different power ratings
(panels with different direction and/or
strings of different lengths):
If the installation does not have the solar panels on the
same plane, i.e., they receive different levels of irradiance,
either due to the shape of the roof or due to the different
inclination levels, or the lengths of the strings are not the
same, the connection must be made as follows:
Solar
field A
Solar
field B
EQUINOX_2 1
2
3
1
2
3
L1
L2
L3
N
Port 1
MPP Ts1 MPPT2
Port 2
USB / WiFi
SPD
FUS
JUNCTION BOX
2 MPPTs
Fig. 28. Connection of several solar fields and 2 MPPTs.
The diagram above is a connection example for a 4 to
12kW unit with an input for each MPPT.

65
EN
In the case of a unit that has two inputs for each MPPT, (17
to 100 kW units), connect identical strings to both inputs
as indicated in the Fig. below:
Solar
field A
Solar
field B
Solar
field C
Solar
field D
EQUINOX_2 1
2
3
1
2
3
L1
L2
L3
N
Port 1
MPPTs1 MPPTs3MPPT2 MPPTs4
Port 2
USB / WiFi
SPD
FUS
JUNCTION BOX
4 MPPTs
Fig. 29. Connection of several solar fields and 4 MPPTs.
4. Insert the positive and negative connectors into the respective
DC input terminals of the inverter. If the terminals are properly
connected, they will make a clicking sound, as shown in Fig. 30,
Fig. 31 and Fig. 32:
COM2-1
COM2-2
COM1
Fig. 30. Connecting the DC input terminals of units with
2MPPTs.
EQX2 SOLAR INVERTERS CONNECTED TO THE GRIDUSER MANUAL

66 SALICRU
Fig. 31. Connecting the DC input terminals of units with 4 MPPTs.
Fig. 32. Units with 10 MPPTs.
Model Cable (mm2)Circuit breaker (A)
EQX24002-T
2,5 20 EQX2 5002-T
EQX2 6002-T
EQX2 8002-T
4EQX2 10002-T
32EQX2 12002-T
EQX2 15002-T 6
EQX2 17002-T
840 EQX2 20002-T
EQX2 25002-T 50
EQX2 33004-T 25 63
EQX2 40004-T 35 80
EQX2 50004-T 100
EQX2 100010-T 50 160
Tab. 9. Circuit breaker gauge and cable cross-sections, by model.
- Disconnect the AC circuit breaker from the grid side before
connecting the DC input terminals.
- The DC circuit breaker must be "OFF".
- Insulate the unused DC terminals with covers.
5.3.3. Connecting the AC outlet.
Before connecting to the grid, make sure that the voltage and
frequency of the grid meet the inverter's requirements. Please refer
to the technical parameters for more details.
This inverter includes a built-in residual current device (RCD).
If an external residual current device (RCD) is used, a type A device
must be used, with a trip current of 30 mA or more.
The recommended AC cord and switch for the EQX2 series three-
phase inverter is shown in Tab. 9: