STECA StecaGrid 2000+ Manuel utilisateur

Taper
Manuel utilisateur
Installation and operating instructions
Instructions d'installation et de service
Instrucciones de instalación y manejo
StecaGrid 2000+ Master/Slave
StecaGrid 2000+ Maître/Esclave
230 V / 60 Hz
731.614 | Z03 | 10.04
PHOTOVOLTAIK - PHOTOVOLTAIC - PHOTOVOLTAIQUE - FOTOVOLTAICA
EN / FR / ES
2731.614 | 10.04
EN
Index
Safety ........................................................................................................... 3
Introduction ................................................................................................. 3
1 About this manual ....................................................................................4
1.1 Applicability ......................................................................................... 4
1.2 Users .................................................................................................... 4
1.3 Description of symbols ......................................................................... 4
2 Safety ........................................................................................................5
2.1 Proper use ............................................................................................ 5
2.2 Improper use ....................................................................................... 5
2.3 Dangers during installation and commissioning .................................. 5
2.4 Dangers durring operation .................................................................. 5
2.5 Exclusion of liability ............................................................................. 5
3 Technical structure of the StecaGrid .........................................................6
3.1 General ................................................................................................ 6
3.2 Master-slave principle .......................................................................... 6
3.3 Cooling ................................................................................................ 6
3.4 Safety aspects & applicable standards ................................................. 7
3.5 Data communication ........................................................................... 7
4 Installation ................................................................................................8
4.1 General requirements for installation................................................... 8
4.2 Notes on installation ............................................................................ 8
4.3 Installation ........................................................................................... 9
4.4 Connecting (AC) the master inverter .................................................. 10
4.5 Connecting (AC) the slave inverter(s) ................................................. 11
4.6 Connecting (DC) master and slaves .................................................... 12
4.7 Connecting the communications module (StecaGrid Connect) .......... 13
4.8 Switching the grid voltage on for the first time ................................. 13
4.9 Navigating the display ....................................................................... 14
5 Operating the StecaGrid .........................................................................15
5.1 Operation and fault display via an LED .............................................. 15
6 Troubleshooting ......................................................................................19
6.1 Fault messages ................................................................................... 19
6.2 Troubleshooting ................................................................................. 19
6.3 Maintenance ...................................................................................... 19
7 Technical data .........................................................................................20
* extended with the requirements of the draft IEC 62109-1/-2. ..................20
8 Guarantee and warranty conditions ............................................................ 21
9 Contact ...................................................................................................22
Appendix .......................................................................................................22
Glossary ...................................................................................................... 22
Notes .......................................................................................................... 24
Installation instructions(Short version) ........................................................25
Installation .................................................................................................. 25
Commissioning ........................................................................................... 26
Table of countries ....................................................................................... 26
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Safety
WARNING
Risk of death by electrocution!
The unit may only be connected to the grid by qualified personnel in accord-
ance with the regulations of the local power supply company.
Introduction
A significant contribution to environmental protection can be made by using
renewable energy sources as less CO2 is released into the Earth's atmosphere
as well as other harmful gases following the burning of fossil fuels. One such
renewable energy source is the sun.
The sun's energy is converted using a so-called PV system (PV stands for photo-
voltaics; an explanation of this can be found in the glossary of specialist terms
at the back of this manual). A PV system contains, amongst other things, an
inverter. The inverter converts the direct current produced by the solar mod-
ules into alternating current which can be fed directly into the public power
grid. The StecaGrid was designed for so-called "grid-connected systems". With
these systems, the inverter is connected parallel to the public power grid.
The solar power system feeds the grid-compliant alternating current via an ad-
ditional feed-in meter (used for feed-in tariff) directly to the grid system of the
grid system operator and is then available to all consumers connected to the
grid. The energy used by the electricity consumer is then billed as normal using
the existing consumption meter.
State-of the-art, high-frequency technology is used in the StecaGrid inverter,
the result being a very high level of efficiency. The inverter uses the master-
slave principle. With this principle, a number of functions for several inverters
are controlled centrally and this is carried out in the so-called master inverter.
The master inverter can control up to two slave inverters connected to it. This
makes the dimensioning of the system more flexible. Using slave inverters also
lowers costs.
The master contains the central control unit, a data logger, display, etc. The
display can provide a quick overview of the system's functions. The StecaGrid
master inverter can be expanded by an optional StecaGrid Connect network
card, etc. See www.stecasolar.com for further information about communica-
tion connections and other accessories. Your installer can, of course, also give
you more information about the options that are available.
In the additional technical documentation, the installer and user are given a
description of the technical features that are necessary for the installation,
function, operation and use of the StecaGrid.
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1 About this manual
1.1 Applicability
This manual describes the installation, commissioning, function, operation,
maintenance and dismantling of the inverter for grid-connected photovoltaic
systems.
When installing the remaining components, e.g. the photovoltaic modules, the
DC or AC wiring and other accessories, be sure to observe the appropriate instal-
lation instructions provided by each manufacturer.
StecaGrid 2000+ Master-M: Master, Multi-Contact connectors (MC4, Sunline 2),
230 V / 60 Hz.
StecaGrid 2000+ Slave-M: Slave, Multi-Contact connectors (MC4, Sunline 2), 230 V
/ 60 Hz.
1.2 Users
Installation, commissioning, operation, maintenance and deinstallation of the
inverter may only be done by trained personnel in accordance with the applicable
on-site installation regulations. The professional personnel must be familiar with this
operating manual and follow the instructions contained herein.
The end user may only perform operating functions.
1.3 Description of symbols
1.3.1 Structure of the warning notices
SIGNAL WORD
Type, source and consequences of the danger!
Measures for avoiding danger
1.3.2 Danger levels in warning notices
Danger level Probability of occurrence Consequences resulting from
non-compliance
DANGER imminent threat of danger death, serious bodily injury
WARNING possible threat of danger death, serious bodily injury
CAUTION possible threat of danger minor bodily injury
CAUTION possible threat of danger property damage
1.3.3 Notes
NOTE
Note on easier and safer working habits.
Measures for easier and safer working habits.
1.3.4 Other symbols and markings
Symbol Meaning
call to action
result of action
- action description
list
emphasis on issue at hand emphasis on issue at hand
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2 Safety
2.1 Proper use
The inverter may only be used in grid-connected photovoltaic systems within the
permitted power range and in the permitted ambient conditions. Not intended
use may affect protective functions.
2.2 Improper use
The inverter must not be operated in the following environments:
In rooms which are too hot
In dusty rooms
In rooms where highly flammable gas mixtures can occur
2.3 Dangers during installation and commissioning
The following dangers exist during installation / commissioning of the inverter and
during operation (in case of installation errors):
Risk of death by electrocution
Risk of fire due to short-circuit
Damage to any of the constructional fire safety measures present in the build-
ing due to incorrectly installed cables
Damage to the inverter and connected devices or components if used in ambi-
ent conditions other than those permitted, if an inappropriate power supply is
used (on either the direct or alternating current sides) and if devices or compo-
nents which are not permitted are connected
Therefore, all safety regulations apply when working on the mains supply. The
inverter may not be opened.
When laying cables, ensure that no damage occurs to any of the construc-
tional fire safety measures present in the building.
Make sure that the permissible ambient conditions at the installation site are
not exceeded.
Factory labels and markings may not be altered, removed or rendered unread-
able.
Before connecting the device, make sure that the power supply (both DC and
AC) matches the specifications on the type plate.
Make sure that all devices which are connected to the inverter conform to the
technical data of the inverter.
Secure the device against unintentional start-up.
Installation work on the inverter may only be carried out when it is discon-
nected from the grid and the photovoltaic generator.
Protect the inverter against overloading and short-circuiting.
2.4 Dangers durring operation
WARNING
Risk from hotness!
The surface temperature of the aluminium cover may exceed 70 °C.
2.5 Exclusion of liability
The manufacturer cannot monitor compliance with this manual as well as the
conditions and methods during the installation, operation, usage and mainte-
nance of the inverter. Improper installation of the system may result in damage
to property and, as a result, in bodily injury.
Therefore, we assume no responsibility and liability for loss, damage or costs
which result or are in any way related to incorrect installation, improper opera-
tion and incorrect use and maintenance.
Similarly, we assume no responsibility for patent right or other right infringements
of third parties caused by usage of this inverter.
The manufacturer reserves the right to make changes to the product, technical
data or assembly and operating instructions without prior notice.
As soon as it becomes evident that safe operation is no longer possible
(e.g. if there is visible damage), remove the device from the grid and the
photovoltaic generator immediately.
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3 Technical structure of the StecaGrid
3.1 General
The StecaGrid is an inverter that uses a transformer to galvanically isolate solar
modules from the mains grid, etc. The inverter was designed so that it can be
installed outside without any problems (IP65).
The StecaGrid is controlled by microcontrollers. The microcontrollers set the volt-
age of the solar modules in such a way that the solar modules provide their max-
imum output (maximum power point tracking). Both inputs have their own MPP
tracker which allows you to design your system flexibly. For example, you can
connect the modules with a south-east orientation to Input 1 and the modules
with a south-west orientation to Input 2 without any mismatches and therefore
any loss in yield. Furthermore, it is possible to connect type-A modules to Input 1
and type-B modules to Input 2 without any mismatch occurring.
The input voltage range was selected in such a way that the rated voltage range
of the PV modules is covered from 80 V - 410 V (open circuit voltage max. 450
V). The maximum input current that the inverter can process is 8 A per input.
When both inverter inputs are connected in parallel the inverter can process cur-
rents up to 16 A. The MPP tracker ensures that the input currents never exceed
the maximum permitted current.
At night, the inverter keeps its use of the electronic components and electricity
consumption to a minimum by switching to sleep mode. The inverter is protect-
ed against stand-alone operation.
3.2 Master-slave principle
The StecaGrid works according to the master-slave principle. With this principle,
several functions are combined in the master (inverter A in the diagram).
The inverters without these functions are referred to as slave inverters (inverters
B and C in the diagram). The regional settings are made via the master.
An MSD function is regulated for all the inverters via the master. The master
also stores data from the master inverter and the slave inverters, etc. Because
the functions are combined centrally, slave inverters can be realised more cost-
effective and more compact. 2 StecaGrid Slave inverters can be connected to
each StecaGrid Master inverter. Any type of StecaGrid Master inverter can be
combined with any type of StecaGrid Slave inverter (a maximum of two slaves
per master is possible). The combination of master and slave devices allows the
dimensioning to be as flexible as possible: System sizes between 1600 Wp and
7000 Wp are possible using master-slave combinations.* For system sizes greater
than 7000 Wp several master-slave combinations can be used.
* with a sizing ratio between 0.8 and 1.25 and assuming that the system voltage and system current are within the
operating range of the inverter.
See www.stecasolar.com for a dimensioning software.
3.3 Cooling
The inverter transfers its heat via a cooling element. Because of the large surface
area of the cooling profile the inverter can operate in ambient temperatures
between –25 °C and +60 °C.
WARNING
Risk from hotness!
The surface temperature of the aluminium cover may exceed 70 °C.
An integrated temperature control prevents excessive internal temperatures.
When the ambient temperature exceeds the (derating) limit, the highest value
of the power consumption from the PV modules is automatically adjusted to
the prevailing temperatures. This process reduces the heat transfer from the
inverter and prevents the operating temperature from becoming too high. When
the ambient temperature is above +40 °C, maximum output can be restricted.
StecaGrid inverters do without a ventilator for cooling and are therefore particu-
larly low-maintenance.
X A B C
Master
X) Control unit
A) Inverter A
B) Inverter B
C) Inverter C
Slave Slave
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3.4 Safety aspects & applicable standards
To provide additional safety, the mains grid and solar modules are galvanically
isolated from one another. Furthermore, both the phase and the neutral conduc-
tor of each inverter are fitted with a fuse. The fuses for both the master and the
slave are placed in a position in the junction box of the master which is eas-
ily accessible. The inverter is compliant with the requirements of all applicable
standards relating to electromagnetic compatibility (EMC) and safety equipment.
The StecaGrid also conforms to the directives regarding the operation of energy-
generating systems parallel to the low voltage grid of the regional power supply
company. The CE symbol can be found on the type plate of the inverter.
The inverter checks grid quality by measuring the grid voltage and grid fre-
quency as well as (applicable to Germany, etc.) system impedance. When there
are faults in the grid, the inverter will automatically disconnect itself from the
grid.The values at which the inverter disconnects itself from the grid vary from
country to country; the following table provides an overview of values for each
country:
Grid voltage
(Disconnection value) Grid frequency
(Disconnection value) Reconnection-time
3300
DOM-TOM -20 % / +15 % of the rated
voltage (0,2 s) - 2,5 / + 0,2 Hz of the rated fre-
quency (0,2 s) 30 s
3400
Costa Rica -20 % / +15 % of the rated
voltage (0,2 s) +/- 0,6 Hz of the rated frequency
(0,2 s) 30 s
NOTE
If other countries are choose the inverter only works with 230 V / 50 Hz.
When installing the inverter, the country of installation must be selected. The
'Switching the grid voltage on for the first time' section explains how to select
the correct country setting.
If your country is not shown in the current list of countries, it may be possible
to use the settings of another country. Our hotline can give you the necessary
information about this. The number is: +49 (0) 700 783224743.
* only available for the StecaGrid 2000+ D Master-M model.
3.5 Data communication
In order to provide an easy overview of the system functions, voltage, current,
solar generator output, grid frequency and grid voltage, among other values,
are measured within the inverter. The energy yields of both the master and slave
units are also stored on a daily, monthly and yearly basis.
These measurements and the operating modes of the StecaGrid can be read on
the display. Using the optional StecaGrid software (StecaGrid Connect User) and
a network interface card (StecaGrid Connect), you can download the StecaGrid
data and process it on a PC. If the inverter has a permanent Internet connection,
then the data can be accessed via a web browser from any location using this
card and a corresponding password. These features allow complete, integrated
monitoring of the solar power system. Further information, etc. about installa-
tion and commissioning can be found in the separate operating instructions.
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4 Installation
WARNING
Risk of death by electrocution!
The StecaGrid inverter may only be connected to the grid by qualified person-
nel in accordance with the regulations of IEC standard 60364. The regulations
of the local power supply company.
When working on the solar system, disconnect the inverter from the power
supply.
Make sure that the power supply cannot be unintentionally switched on.
Do not interrupt the DC connection between the solar modules and from the
solar modules to the inverter while current is flowing. If the DC connection has
to be interrupted, always disconnect the inverter from the grid first.
Lay the cable such that the connection cannot come loose accidentally.
Press the MC connection together until it audibly snaps into place.
4.1 General requirements for installation
When using several inverters in a phase, the maximum permitted connected load
in Germany is 4.6 kVA. Higher outputs must be distributed onto several phases.
When loads are distributed onto several phases, however, phase inequality must
not be more than 4.6 kVA. Please refer to the national and/or regional regula-
tions regarding details about the connection conditions.
This essentially means that each inverter or group of inverters must be connect-
ed to its own fuse group in the electrical installation by way of a mains switch/
mains isolation switch. The mains switch must be located in the same room as
the inverter and have sufficient switching capacity. In this case, the photovoltaic
system must be viewed as a load on the power grid.
An exception to this is when the inverter(s) is (are) also in the low-voltage distribu-
tion room; in this instance a separate switch is not required, because the relevant
group switch can take on this function.
In all Cenelec countries (Netherlands, Germany, Spain, Italy, etc.) a DC circuit
breaker is also required.* You can obtain this DC circuit breaker from Steca via
your dealer if desired. The nominal voltage of the DC circuit breaker must be at
least 500 V.
The installer must ensure that all applicable installation regulations, national
laws, installation standards and connection load values of the regional power
supply company are adhered to.
* See IEC Standard IEC60364-7-712 for further information.
Cable cross-section and fuse:
PNom Cross-section Fuse
2 kW 1,5 mm² B16
4 kW 2,5 mm² B25
6 kW 4 m B32
4.2 Notes on installation
CAUTION
Damage to the inverter!
Do not install the inverter:
In rooms which are too hot
In dusty rooms
In rooms where highly flammable gas mixtures can occur
Keep the cables of the solar modules as short as possible.
Do not install the inverter in locations where it will be subjected to vibration.
Do not block the air flow which cools the inverter. A space of at least 20 cm
must be left above and below the device to allow air to circulate around the
device.
The electrical connections must be made in the correct order:
1. Connect the equipment to the grid
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2. Connect the PV generator
3. Connect power cable safety switch
Due to its protection degree (IP65), the StecaGrid inverter can be installed in
numerous locations. During installation, a number of points must be observed
however and are listed as follows.
Because the device can make a small humming/rushing noise (< 32 dBA) it
should not be installed in living areas.
The inverter must not be installed in areas where animals are kept (risk to ani-
mals and/or risk to the electrical system because of the animals and because
of increased dust formation, damage to cables from ammonia, etc.).
The combination of 1 master unit and 2 slave units can generate high cur-
rents. Adapt the connection accordingly. During the installation of 1 master
unit, it is recommended that preparations are made to the connection to
allow possible expansion with slave units.
The LED and display must remain readable (reading angle).
The ambient temperature must remain between –25 °C and 60 °C
(recommended: 40 °C).
The equipment must not be exposed to direct sunlight. If necessary, the
equipment must be protected against direct sunlight by placing a special
shield in front of and above the equipment.
There must be sufficient ventilation.
The installation position of the inverter will be described in the next section. This
installation position must be adhered to.
The last 4 points are important in order to minimise the probability of derat-
ing occurring. If these points are not taken into consideration this may result in
reduced yield.
4.3 Installation
The StecaGrid has been designed to stand vertically. Because of the risk of faults
occurring to the cooling system, deviation from the perpendicular must not be
more than +/- 15°. We therefore recommend that it is not installed horizontally
(on its side).
The inverter is provided with a (separate) mounting/fixing plate. Each plate con-
tains two connecting hooks that can be used to connect a following mounting
plate perfectly. Each mounting plate is also provided with hooks that project out
at the front on which the inverter is hung.
When installing the StecaGrid, choose a flat background which is not easily flam-
mable, e.g. a concrete or stone wall.
First fix the mounting plate using 4 screws (ø 5 mm, not supplied). When
doing so, please note the width of the junction box of the master; this box
projects out 12.5 cm on the left. A space of approx. 3 cm must also be left
so that the junction box cover can be opened. For each slave unit that is
connected to the master (max. 2; the slave units are hung to the right of
the master), an additional mounting plate must be provided. The mount-
ing plates must be connected with each other exactly using the connection
hooks.
Then the master inverter can be hung. Allow the inverter to slide onto the
hooks projecting out at the front from above. Make sure that the locking
mechanism drops over the cooling plate fin. This will prevent the inverter
from falling to the floor, e.g. due to accidentally lifting up the inverter.
1
2
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The cooling fin furthest on the right must drop over the edge rising up on
the fixing plate. Further slave inverters can be hung on the corresponding
mounting plates in the same way.
4.4 Connecting (AC) the master inverter
WARNING
Risk of death by electrocution!
When working on the solar system, disconnect the inverter from the power
supply.
Make sure that the power supply cannot be unintentionally switched on.
First connect a separate group, making sure that this group is voltage-free.
Connect what will be the slave units first, then connect the solar modules
before turning on the power supply.
Unscrew the cover of the master inverter junction box.
The mains connection cable (AC output) is connected to the 3 WAGO
– spring clamp terminals via the cable feed fitted with a union nut. At
least 8 mm of insulation should be stripped from the end of the wire. If a
flexible connection cable is used a wire end sleeve should be crimped on.
The wire end should be inserted correct into the opened WAGO terminal
and then checked to make sure it is securely connected. The cable routeing
must be in accordance with the adjoining drawing.
For reasons of safe transport the coupling screw is attached separately.
It must be mounted to the central connection box before putting the AC
cable through it.
The phase, neutral and earth cables must be connected to the correct
points ["Line-Neutral-PE" printed]. Tighten the union nut well (by hand).
This ensures that there is enough strain relief for the cable. If tools are used
incorrectly the union nut could become damaged.
3
1
2
3
min. 15 cm
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4.5 Connecting (AC) the slave inverter(s)
WARNING
Risk of death by electrocution!
When working on the solar system, disconnect the inverter from the power
supply.
Make sure that the power supply cannot be unintentionally switched on.
Connect the slave units first, then connect the solar modules before turning on
the power supply.
When the slave inverters are installed at the same time as the master inverter the
AC side is still voltage-free. If the slave units are not installed at the same time as
the master inverter but later, disconnect the AC voltage first.
Then remove the screws from the cover of the master inverter's junction
box and open the flap.
Now unscrew the protective cap on the underside of both the master and
slave inverter and remove the small protective plate on the right under-
neath the master inverter. If you wish to connect a second slave inverter
remove the small protective plate on the left-hand slave as well.
Now both the AC cable as well as the data cable of the slave inverter
can be seen.
Now you can guide the AC cable and the data cable to the junction box. To
shorten the cable for the left-hand slave inverter to a suitable length, wind
it once round the back of the capstan. The length of the cable for the slave
inverter furthest on the right has been calculated so that it can be con-
nected just right.
Fix the internal 230 V AC cable(s) from out of the inverter to the con-
nectors in the control unit (input 2 or 3). Repeat this procedure with the
communication cables. Fix these cables from the inverter to the plug con-
nectors in the control unit. When doing so, ensure that the communication
cable is connected to the correct position number relating to the corre-
sponding 230 V cable.
Close the cover again.
1
2
3
4
5
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4.6 Connecting (DC) master and slaves
WARNING
Risk of death by electrocution!
When working on the solar system, disconnect the inverter from the power
supply.
Make sure that the power supply cannot be unintentionally switched on.
Connect the slave units first, then connect the solar modules before turning on
the power supply.
Any socket inputs in the case of the junction box which do not have a cable
connection must be closed off with the seals supplied. This prevents moisture
from getting into the inverter.
There are no fuses in the inverter (power unit) itself. The fuses are located in
the junction box where the electrical mains connection is also housed. The
fuse specifications are shown in the "Troubleshooting" chapter.
Input voltage must never exceed 450 V DC. Higher input voltages will dam-
age the inverter. Here, please note the temperature dependence of the open
circuit voltage of the solar modules.
It is not necessary and also not permitted to open the inverter case (power
unit)! Opening the case will invalidate the warranty.
The cable routeing must be in accordance with the adjoining drawing.
The electrical PV connection is made to the StecaGrid via the plug connectors
on the case. The connectors are - provided that they are correctly fixed and dry
- contact proof.
On each StecaGrid there are 2 positive and 2 negative sockets in total for con-
nection of the modules. Each input has its own MPP tracker.
When only one input on the inverter is used the module string must be con-
nected to the right-hand sockets (input 1).
Mixing up the positive inputs (e.g. + from string 1 to + input 2) within the same
inverter will not affect the operationability of the inverter. This is will however
also cause the inverter input numbers shown on the display to be the wrong
way round. To prevent possible confusion when looking for a problem the cor-
rect connection to both inputs should therefore be made.
When PV modules with a current of more than 8 A are used, both inputs can be
connected in parallel using a special T-splitter, also called Y-plug (not included
in the standard package). This way, modules with a maximum (MPP) current of
16 A can be connected. A T-splitter is not necessary for a negative connection
because both inputs are already internally connected in parallel. Just connecting
either of the two inputs with the module string will suffice.
2
- + - +
2 1 1
min. 15 cm
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4.7 Connecting the communications module
(StecaGrid Connect)
If the StecaGrid Connect option is used with an external communications con-
nection, the connection plug is located on the above left of the daughterboard.
An aperture can be cut out in the lower part of the control unit for the cable
feed. After inserting the cable hole can be sealed with the supplied blan plug.
Further information regarding connection of the daughterboard can be found in
the manual supplied with the daughterboard.
The SubD9 plug connector (above right) is only used for maintenance purposes.
Improper use can damage the inverter and will invalidate the warranty.
4.8 Switching the grid voltage on for the first time
When energy is being supplied the inverter continuously checks the quality of
the electricity grid. If the grid quality is poor the inverter will automatically dis-
connect itself. The criteria according to which the inverter disconnects itself vary
from country to country and are listed in the table in the appendix. This is the
so-called "table of countries". The specific criteria according to which the inverter
disconnects itself are fixed by law.
When commissioning the inverter, first the language then the country should
be set. Select the country in which the inverter is installed; the inverter thereby
fulfils the national requirements. The setting is made using the display and ar-
row buttons.
The country setting can only be carried out once. Following selection, a normal
user can only choose between the standard setting and the chosen country
setting. The enclosure contains a table with countries and the relevant country
setting.
If the wrong country setting is still selected this country setting can be changed
by an installer who has the necessary service software.
After connecting the AC side with the grid the inverter autonomously synchro-
nises with the mains.
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4.9 Navigating the display
Button (A) Escape:
Use this button to return to the main menu from the individual menu
items and to exit the setup menu.
Buttons (B) and (C) Arrow buttons Up and Down:
Use these buttons to run through the individual menu items or to carry
out settings in the setup menu.
Button (D) Enter:
Use this button to go to another menu level or to confirm a setting in
the setup menu.
As soon as a voltage is present on the AC side of the inverter for the first time,
you must select the language desired. The following languages can be selected:
German, English, French, Spanish and Dutch. The following display then appears
in the selected language:
‘Warning: country selection: only permitted once, see manual’
Press the Enter button to continue.
In this display the country can be selected. Use the arrow buttons to select
the country desired. Then press the Enter button to confirm your selection.
After you have selected the country, the setting is shown and you are asked
to confirm the setting. If you choose the wrong country you can press the
Escape button to return to the selection list. If the country chosen is cor-
rect, confirm the selection using the Enter button. The normal display now
appears.
It is possible to switch the inverter on and off by hand. The inverter is
switched off as standard when delivered. This setting can be changed in
menu 2-1 of the inverter.
Press the Enter button to continue.
Use the arrow buttons to go to menu 2 and press the Enter button once
again.
This is the display with which the inverter can be switched on and off. Press
the Enter button.
The current status is shown underneath the text. The inverter can
now be switched on and off by pressing the Enter button again. If the
inverter is switched on manually it can be some time before it becomes
activated. Then the inverter is fully installed.
A D
B
C
1
2
3
4
5
6
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5 Operating the StecaGrid
5.1 Operation and fault display via an LED
The front of the control unit is equipped with an LED which shows the operating
status of the inverter(s). During startup, the LED lights up green (dimmed). Star-
tup begins with a series of test procedures (which take a few seconds). When
the output of the solar modules is high enough, the inverter will switch to 'active
mode'. When there is little irradiation it may be that the solar modules do not
produce enough power to feed into the power grid.
The message then appears on the display: 'Stand By'
An overview of the other messages and the corresponding LED status can be
found in table 1.
LED status System status Explanation, cross-references
Green – dimmed Sleep mode The system is switched to energy-saving
mode (night shut-off).
Green Active mode The system is running (normal operation
status)
Green – flashing Standby mode The system can supply energy.
Redflashing Partial active There is a fault in one of the inverters
(the others are still supplying energy).
The fault message can be called up over
the display.
Red Error The inverter has a fault (no energy is be-
ing supplied). The fault message can be
called up over the display.
Off Off There is no grid voltage present.
Table 1: Overview of the LED messages
The main menu
The display is used to specify (new) settings as well as showing system data.
Navigating the display
Button (A) Escape:
Use this button to return to the main menu from the individual menu
items and to exit the setup menu.
Buttons (B) and (C) Arrow buttons Up and Down:
Use these buttons to run through the individual menu items or to carry
out settings in the setup menu.
Button (D) Enter:
Use this button to go to another menu level or to confirm a setting in
the setup menu.
Depending on the user profile set, 9 menus can be called up by pressing the Up
or Down button.
User profiles can be set on 3 levels.
Basic [Submenu: 1-2-5]
Advanced [Submenu: 1-2-3-5]
Service [Submenu: 1-2-3-4-5]
Depending on the options implemented, submenus 7 and 8 can still be added.
Using this menu structure, a user can call up all necessary data.
An overview of all the functions with a short description can be found in the
enclosure. There, in the left-hand column, a figure is shown. This figure also ap-
pears in the top right of the display and shows the location and selected menu
or function. If, for example, the location of a menu item is shown as 5-3-3, this
means that, in the main menu, menu 5 (settings) must first be chosen. Then,
submenu 3 (language) is selected. The third item is then 5-3-3 (German). In this
example, the language shown on the display can be changed to German by
pressing the Enter button here.
A D
B
C
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16 731.614 | 10.04
Item
number Menu item Meaning
1-1-1-1 Current output Shows the current total output of master and
slave units.
1-1-1-2 Highest max. output The highest total output that master and slave
units have reached.
1-1-1-3 Reset highest output Press the Enter button to reset the highest max.
output (1-1-1-2).
1-1-2-1
to
1-1-2-8
Today's date
to
date 7 days ago
The total amount of energy that was produced
by master and slave units on this day.
1-1-3-1
to
1-1-3-13
Current month
to
12 months back
The total amount of energy that was produced
by master and slave units in the relevant month.
1-1-4-1
to
1-1-4-x
Current year
to
year of purchase
The total amount of energy that was produced
by master and slave units in the relevant year.
1-1-5-1 Total energy The total energy that has been produced by
master and slave units since the time of instal-
lation.
1-2-1-1 Current output Shows the power that is present at this moment
(individual readings for the master and slaves).
1-2-1-2 Highest max. output The highest output reached since the system
was last reset (individual reading for the master
and slaves).
1-2-1-3 Resetting the highest max.
output The highest output of 1-2-1-2 is reset. By press-
ing the Enter button at this menu item, the
output of 1-2-1-2 is the highest output since the
Enter button was pressed at this menu item.
1-2-2-1
to
1-2-2-8
Today's date
to
date 7 days ago
The amount of energy that was produced on
this day (individual readings for master and
slaves).
1-2-3-1
to
1-2-3-13
Current month
to
12 months back
The amount of energy that was produced in the
relevant month (individual readings for master
and slaves).
1-2-4-1
to
1-2-4-x
Current year to year of purchase
(max. 25 years) The amount of energy that was produced in the
relevant year (individual readings for master and
slaves).
1
> Yield
Status
Measured values
2
Yield
> Status
Measured values
3
Yield
Status
> Measured values
4
Status
Measured values
> System data
5
Measured values
System data
> Settings
StecaGrid
System
Output
Menu
Enter
Up
Down
Up
Down
Up
Down
Up
Down
Up
Down
After Output
Refresh screen
Enter
Enter
Enter
Enter
Enter
EN
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1-2-5-1 Total energy The total energy that that has been produced
since the time of installation (individual read-
ings for master and slaves).
2-1-1 Manual on/off By pressing the Enter button, master & slaves
can be switched on and off at this menu item.
2-2-1 Inverter a Shows the status of the master. Options: acti-
vated, standby, sleep, off
2-2-2 Inverter b Shows the status of the 1st slave. Options:
activated, standby, sleep, off
2-2-3 Inverter c Shows the status of the 2nd slave. Options:
activated, standby, sleep, off
2-3-1
to
2-3-n
Message 1
to
message n
Only applicable when there is a fault message.
The fault message is shown here.
3-1-1 Grid voltage, frequency, electric-
ity Shows the current measured values for the grid
voltage, the electricity fed into the power grid
and the grid frequency.
3-2-1 PV voltage Shows the DC voltage of both inputs for both
the master as well as the slaves.
3-2-2 PV current Shows the DC current of both inputs for both
the master as well as the slaves.
3-2-3 PV output Shows the DC output at both inputs for both
the master as well as the slaves.
3-2-4 Mains electricity Shows the electricity fed into the grid for both
the master as well as the slaves.
3-2-5 Primary bus voltage An internal voltage in the inverter. The value of
this voltage provides the technician with infor-
mation about the status of the inverter when
there is a fault.
3-2-6 Secondary bus voltage An internal voltage in the inverter. The value of
this voltage provides the technician with infor-
mation about the status of the inverter when
there is a fault.
3-2-7 Internal temperature Shows the current inner temperature of the in-
verter for both the master as well as the slaves.
4-1 System Shows the type, serial number and version
number of the relevant component.
4-2 Inverter a Shows the type, serial number and version
number of the relevant component.
4-3 Inverter b Shows the type, serial number and version
number of the relevant component.
4-4 Inverter c Shows the type, serial number and version
number of the relevant component.
4-5 Display Shows the type, serial number and version
number of the relevant component.
4-6 RFM Shows the type, serial number and version
number of the relevant component.
5-1-1 Time When the Enter button is pressed here, the
time starts to flash. It can be set by pressing
the arrow buttons. The setting is confirmed by
pressing the Enter button.
5-1-2-1 12 When the Enter button is pressed here, the time
is shown using the 12-hour clock, i.e. showing
AM/PM.
5-1-2-2 24 When the Enter button is pressed here, the time
is shown using the 24-hour clock.
5-1-3 Date When the Enter button is pressed here, the
date starts to flash. It can be set by pressing
the arrow buttons. The setting is confirmed by
pressing the Enter button.
5-1-4-1
to
5-1-4-3
Yyyy-mm-dd
dd-mm-yyyy
mm-dd-yyyy
By selecting the relevant entry the correspond-
ing format is specified for displaying the date.
5-2-1-1 Always switched on By selecting this entry illumination of the display
is always switched on.
5-2-1-2 Always switched off By selecting this entry illumination of the display
is always switched off.
5-2-1-3 Energy-saving mode By selecting this entry illumination of the display
is automatically switched on as soon as the
navigation buttons are pressed. After the but-
tons are pressed the display remains illuminated
for a certain length of time before the illumina-
tion automatically switches itself off.
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5-3-1 English By selecting this entry English is chosen as the
display language.
5-3-2 Nederlands By selecting this entry Dutch is chosen as the
display language.
5-3-3 French By selecting this entry French is chosen as the
display language.
5-3-4 German By selecting this entry German is chosen as the
display language.
5-3-5 Español By selecting this entry Spanish is chosen as the
display language.
5-4-1 Basic With this profile, only the basic functions are
shown (Menus 1, 2, 5 and, if available, 8).
5-4-2 Advanced With this profile, the user has maximum insight
into his system (Menus 1, 2, 3, 5 and, if avail-
able, 8).
5-4-3 Service This profile corresponds to the Advanced profile
and also contains Menu 4. In addition, the
installer is able to access the country selection.
EN
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6 Troubleshooting
6.1 Fault messages
If the StecaGrid detects a fault a tool symbol is shown on the display. This sym-
bol appears below right in the Start display or above right in the menu displays
behind the "item number". The StecaGrid can display various fault messages:
Notify Service (relay)
Notify Service (DC-ABC)
Notify Service (NTC-ABC)
Notify Service (SDL ABC)
If one of these faults appear, please contact your installer immediately.
There are also messages that have no effect on the primary function of the
equipment. These messages are shown on the display with a flashing exclama-
tion mark. The exact wording of the message can be found on the display under
"Status - Messages". The following messages can appear:
Inverter ABC grid frequency high
Inverter ABC grid frequency low
Inverter ABC grid voltage high
Inverter ABC grid voltage too high
Inverter ABC grid voltage low
Inverter ABC grid voltage too low
Inverter ABC PV voltage too high
Inverter ABC DC/AC protection activated
Inverter ABC temperature too high
Inverter ABC not synchronised
Check inverter ABC (COMM)
These are temporary warnings. You do not need to take any action.
6.2 Troubleshooting
Correcting faults to the inverter(s) is limited to replacing fuses in the control
unit. This work may only be carried out by an installer. There is a 12 A fuse in
the neutral as well as in the grid connection of each inverter (slow-blow, high
switching performance, 6.3 x 30 mm). A 2 A fuse (slow-blow, 5 x 20 mm) pro-
tects the power supply of the control unit. Replacement fuses must always be
the same type as the original fuse and have the same values. Always ensure that,
when replacing a fuse, the AC side of the inverter is made voltage-free. If one of
the fuses of the inverter is faulty we recommend that the corresponding fuse of
the same group is replaced as well. Then check whether a fault with the inverter
caused the fuse to blow and exchange the inverter if necessary.
6.3 Maintenance
Due to its design, the StecaGrid is practically maintenance-free especially as it
does not contain any components which can wear out (ventilators and similar).
Nevertheless, we recommend that regular checks are carried out.
It is particularly important to ensure that the cooling plates on the rear of the
StecaGrid are kept dust-free.
If an inverter is installed in a more or less dusty environment, the inverter will
quickly become dirty as a result of the natural, stronger air current through the
cooling fins.
If this cooling plate becomes dirty, heat dissipation will be impaired and this will
cause the output restriction at lower ambient temperatures than the stated 40 °C
to be reached more quickly and thereby to unnecessarily decrease electricity
generation.
The inverter case can be cleaned with a damp cloth.
Do not use any cleaning agents that can damage the plastic/aluminium compos-
ite case.
Fuses in the inverter
• Neutral and grid connection: 12 A
(slow-blow, high switching performance,
6.3 x 30 mm)
Steca item number: 719.498
• Control unit power supply: 2 A
(slow-blow, 5 x 20 mm)
X) Control unit
A) Inverter A
B) Inverter B
C) Inverter C
X A B C
EN
20 731.614 | 10.04
7 Technical data
StecaGrid 2000+ D
Master StecaGrid 2000+
Master StecaGrid 2000+
Slave
Input data (PV side)
Input voltage, working range 80 V … 400 V DC
Nominal voltage DC 300 V DC
Maximum start voltage 410 V DC
Maximum input voltage for feeding electricity Upv 450 V DC (higher voltages can damage the device)
Minimum input voltage for grid-feeding > 80 V
Disconnection voltage 50 V
Nominal current DC 7 A DC
Maximum input current Ipv 2 x 8 A DC [current limited by inverter]
or
1 x 16 A DC [parallel inputs]
Isolation principle HF transformer with galvanic isolation and Increased isolation
Thermal monitoring Yes
Reverse polarity protection Yes
Maximum DC input power 1,075 W [per input]
or
2,150 W [2 parallel inputs]
Maximum recommended PV power 2,400 Wp
Reduction in power / Restriction Automatic when
- input power is higher (> 1.075 kW/input)
- the equipment is not cooled enough
- input currents > 2 x 8 A DC or 1 x 16 A (parallel inputs).
(Higher currents are restricted by the equipment and therefore will not damage the
inverter)
DC connections MultiContact MC 4 (Solarline 2)
Output data (grid-side)
Output nominal power 2,000 W AC
Maximum output power 2,000 W AC
Grid voltage 190 ... 265 V AC [depending on regional settings]
Grid type L/N + PE
Grid frequency 57,2 ... 62 Hz [depending on regional settings]
Rated output current 8.7 A AC at 230 V AC
Maximum output current 10 A AC
Power factor > 0,95
Distortion factor < 5 % (at maximum output)
Disconnection value during stand-alone operation [See table of countries (enclosed)]
Maximum efficiency 95 %
European efficiency 93.3 % 93.3 % 93.5 %
MPP efficiency > 99%
Efficiency at part load (5, 10, 20, 30, 50, 100% of nominal power) 78,8 %, 86,8 %, 91,7 %,
93,3 %, 94,4 %, 95,0 % 78,8 %, 86,8 %, 91,7 %,
93,3 %, 94,4 %, 95,0 % 80,2 %, 87,5 %, 92,0 %,
93,5 %, 94,6 %, 95,1 %
Efficiency reduction in the case of a rise in ambient temperature (with tempera-
tures >40 °C) 2 %/°C
Efficiency reduction in the case of deviation from the DC rated voltage 0,006 %/V
Ambient temperature range (Tamb.) -25 ... +60 °C
Power derating at full power From 40° (Tamb.)
Start-up power 20 W
Shut-down power 18 W
Stand-by power 3 W
Inverter's own consumption (nighttime operation) 1.3 W 1.0 W 0 W
AC connection cable WAGO 2.5 - 6 mm² via master
Standards and certification marks
EMC EN 61000-6-3 (EN 55014 and EN 55022 class B)
EN 61000-6-2
Safety directive EN 62103 (EN 50178) and EN 60950 *
Protection degree IP65 IP65 IP65
Humidity 0 ... 95 %
Certification mark Document of compliance, CE
Dimensions and weight
Dimensions (W x H x D): 351 x 542 x 140 mm 351 x 542 x 140 mm 226 x 535 x 140 mm
Weight: approx. 11 kg approx. 11 kg approx. 9 kg
Other
Grid monitoring Compliant with
DIN VDE 0126-1-1 See table of countries -
Isolation monitoring None, because of galvanic isolation through the HF transformer in the device
Display Display, LED -
Noise level < 32 dBA
* extended with the requirements of the draft IEC 62109-1/-2.
EN
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STECA StecaGrid 2000+ Manuel utilisateur

Taper
Manuel utilisateur