This is a training area to provide solutions to frequent problems or doubts about the brands and products we work with, based on our technical experience in after-sales service.
On this page you can obtain information about the most common queries about our products. It is a training area to provide solutions to frequent problems or doubts about the brands and products we work with, based on our technical experience in after-sales service.
The information has been organised into the following categories:
- PANELS
- KITS
General questions:
- Are my gel batteries compatible with all inverters? No, gel batteries are only compatible with hybrid inverters. You can use gel or lead batteries with any inverter + regulator as long as you have made sure that your inverter supports the use of batteries. To do this, you can access the technical data sheet of your inverter.
- ¿What fire extinguisher should I use to work with my lithium batteries? There are fire extinguishers that have been specifically designed to work with lithium batteries. All of them should work properly.
- Are my lithium batteries compatible with all inverters? No, lithium batteries are only compatible with hybrid inverters. Moreover, not all batteries are compatible with all hybrid inverters, each battery has its own compatibility list. The compatibility is given by the communication protocol between the inverter and the batteries. For more information, please refer to the compatibility list of your battery.
- If I have a low voltage battery (24 or 48 V), can I use a high voltage inverter? No, low voltage batteries are only compatible with low voltage hybrid inverters and high voltage batteries are only compatible with high voltage hybrid inverters. When the battery brand is compatible with the inverter in question, you will need to validate that the working voltage of the inverter is the same as the battery. Normally there are 3 working voltages: 24V, 48V or high voltage (HV, batteries with voltage higher than 48V, the value of each depends on the manufacturer of the battery in question). For more information, please refer to the compatibility list of your battery.
- Are Pylontech batteries compatible with all hybrid inverters? Yes, they are compatible with almost all low voltage hybrid inverters (24V or 48V). For more information, please refer to the compatibility list of your battery.
- Do my batteries need solar panels to work? No, the batteries can be charged from any source and therefore do not explicitly need solar panels to operate. The element that needs to be able to charge from the grid is the inverter, which does the charge management (not the battery).
- How do I know if a product is certified in a specific country? To find out if a product is certified in a specific country, please consult our technical department.
Trojan
- Can open lead-acid batteries be turned over? No, they should not be tipped over as the contents may spill out.
- Is it possible to change the plug on a lead-acid battery? No, there are a number of different connectors, but unless you order a specific one, you will be supplied with a reference one. The plugs, on the other hand, are fitted by the manufacturer and are therefore unique and cannot be changed.
Huawei
- How should I connect the Huawei backup box so that the differential does not trip? If you connect it correctly, the differential should not trip. The manual explains correctly how to make the connections. A typical mistake is to double the power supply of the backup lines. When the backup is connected, passing through the inverter, it is no longer fed directly from the main input. Care must be taken not to double the connection. In general, we recommend that if a problem of this type occurs, you have the installation checked by a technician, because if the thermal is tripped, it is because there is a connection connected incorrectly.
- Are Huawei Luna2000 batteries compatible with any hybrid inverter? Huawei Luna2000 batteries are only compatible with hybrid inverters of the same brand and the SUN2000 series. Within this series, all L1 models are compatible with LUNA2000 batteries, M1 models with a power of less than 10kW are also compatible. For more information, please refer to the compatibility list of your battery.
- Can the Huawei LUNA2000 battery still work, even if the power goes out? Yes, but it needs the "Back UP" kit so that when the power goes out, it can operate autonomously.
SAJ
- How can I change the charge percentage of the SAJ AS1 battery? To make this modification you must use the SAJ Home application. If you are unable to do so, you must send the following information to the technical department: description of the modification you wish to make (add reasons, optional) + order reference + serial number of the equipment. In general the DoD charge and discharge percentage is set by the manufacturer and it is not recommended to modify it, if you are not sure about what you want to do, please contact the technical department.
Pylontech
- What accessories do I need to use my Pylontech batteries? In case you have a low voltage (LV) installation, you will need one or more U12 or U16 racks (depending on the amount of batteries you use). In case you use more than one rack, you will need an LV-HUB if you use US2000C or US3000C batteries. Finally you would need a set of communication cables between the inverter and the battery. In case you have HV batteries, you will need one or more Powercube racks (H2 if you use H48050/H48074 batteries or M1 if you use H32148 batteries). In case you have only one rack, you will need a BMS SC500 or SC1000-100S (if using H48050 or H48074 batteries) or SC1000-200 (if using H32148 batteries), while, if you have more than one rack, you will also need an MBMS1000A-S or an MBMS1000M3A180 (depending on whether you use H2 or M3 racks). Finally, you would need an H2 or M1 cable set (HV) (depending on whether you use an H2 or M3 rack).
- What accessories do I need if I want to connect 2 or more racks? Each Pylontech rack supports a certain number of Pylontech batteries, depending on the model (e.g. U16 rack supports 8 US2000C or 5 US3000C). To connect more than one rack, you will need the LV-HUB in case your batteries are US2000C or US3000C. In case your batteries are high voltage batteries (H48050 or H48074), you will need the MBMS 1000A-S.
- Which BMS does my Pylontech battery need? It depends, if your battery is a low voltage battery, it is integrated in the battery itself. If your battery is high voltage (HV) you will need a BMS SC500 or SC1000-100S (if using H48050 or H48074 batteries) or SC1000-200 (if using H32148 batteries), while if you have more than one rack you will need an MBMS1000A-S or an MBMS1000M3A180 (depending on whether you are using H2 or M3 racks).
- What should I do if the battery is not charging / has a red alarm light on / no voltage output? Generally, if the equipment is in alarm mode, it cuts off the supply. The most common test you can perform is as follows:
- Remove all connected wiring from the faulty battery.
- Reset the battery and hold down the SW button on the battery itself for 3 seconds.
- Once started, wait for the battery itself to respond and measure the voltage directly at the battery terminals with a tester.
- If the status has the Run light flashing green and giving a voltage between 45-54V, the battery status is good.
- In case of a beeping alarm, it is a fault of the board.
- What should I do if my battery status LED does not light up? The US2000C (for example) have their own BMS. If the status LED does not light up, an RMA must be opened and the battery may have to be sent in for repair. If you have more than one battery, it is possible that the one that does not light up is completely flat. You can do an equalisation (simple procedure to do, there are several tutorials on the internet), in order to supply a minimum of power for the battery that does not turn on to run the BMS. The discharge limit (DoD) of the battery is limited so it is very rare for this to happen.
- Does my battery have BMS? Pylontech low voltage batteries (US2000C, US3000C, US5000C and UP2500 series) have the BMS integrated. High voltage batteries (H48050 and H48074) do not.
- Are Pylontech batteries compatible with Dyness batteries? Yes, Pylontech batteries are compatible with Dyness batteries.
- What is the difference between US2000C and US2000 or US2000B? The US2000C batteries (the ones we have available), are the most modern version with 7000 discharge cycles up to 90% (DoD). While the US2000B is the older model with 5000 cycles.
- How many Pylontech US2000 / US3000 batteries can I connect in series? You can connect up to 6 without purchasing the Pylontech HUB. With the HUB you can connect up to 12 batteries.
- Can I connect Pylontech US5000C batteries with US3000 batteries? You can use both types of batteries within the same installation, but you cannot connect them within the same battery block (groups of batteries connected together), because they have different DoD. The Pylontech HUB can be used to link different battery blocks (the blocks do not necessarily have to have the same batteries).
- What should I do if my battery is on, the status LED is red, there is a continuous beeping sound and the battery reports a critical internal problem? In case your battery reports an internal critical problem (e.g. fuse failure), you should make sure that the battery is charged. If a fuse error is displayed from BatteryView, it is possible that a short circuit has occurred and the battery has gone into protection mode. To see if the problem is solved, you can access BatteryView again à go to the Control Panel option and click on "Clear Fuse Error". If the problem is not solved, it means that the board has short-circuited and needs to be sent to the technical department for repair.
- What should I do if one of my batteries does not charge at the same time as the others? When batteries are combined it is necessary to do an equalisation to make the charging of all the batteries synchronised. To solve the problem you should discharge the batteries with the highest charge until they are at the same level as the battery with the lowest charge. At that point you should connect the uncharged batteries and leave them swinging for 20 minutes to 1 hour, after which you should switch off the system, reconnect the batteries to the inverter and switch on the system normally. If you have any doubts on how to perform any of the steps, you can find different tutorials on the Internet on how to perform an equalisation of your batteries.
General questions:
- What is the difference between stand-alone, grid-connected and hybrid inverters?
o Stand-alone inverters are used in off-grid installations. The inverters themselves generate a 50 Hz grid frequency. Most off-
grid inverters are hybrids (they allow the connection of batteries either with a separate regulator or integrated in the inverter
itself), so it is very common for off-grid installations to have batteries.
o Grid-connected inverters need to be connected to the grid to synchronise and operate. Without grid connection they do not
work. They can be used for immediate self-consumption or for feeding into the grid.
o Hybrid inverters (either off-grid or grid-connected) allow the connection of batteries. Grid-connected hybrids, in particular, do
not need the grid to synchronise and operate. They are able to generate a grid when the grid goes down and, at the same
time, they are able to manage the charging and discharging of the batteries.
- What does it mean if my inverter has 2 MPPT inputs? It means that your inverter can have up to 2 strings (rows of panels in series) of inputs.
- What is my regulator used for? In inverters with a regulator, the regulator is used to regulate the flow of energy from the solar panels to the batteries. If the inverter does not include the regulator, please refer to the technical data sheet of the regulator for the compatibility list.
- What should I do if I think my inverter is faulty or does not measure correctly? If you think that your product is faulty or does not measure correctly, you should inform our technical department and provide them with the following information: description of the error + your order reference + model of the equipment + video showing the error + serial number of the equipment + description of the complete installation.
- Can I parallel my inverter with any other inverter? No, each inverter has a list of inverters with which it is compatible (sometimes they cannot be paralleled). This list can be either other inverters of the same series or inverters of the same brand. For more information, please consult the manual of your inverter.
- Where can I find out which batteries are compatible with my inverter? If your inverter is a hybrid inverter, you can find out which batteries are compatible in the inverter's data sheet.
Solaredge
- If I buy a Solaredge inverter, are all the necessary accessories included? No, both the wattmeter / smart meter and the wifi module are purchased separately. It is also necessary to purchase the optimisers for the solar panels separately (one per panel). These optimisers are used for. To find out which optimiser you should use on your panels, you should check that the voltage values per MPPT (VDC) and Isc of the panels are within the range that the optimiser accepts. For more information, please refer to the data sheet of your panels and the Solaredge optimiser you want to use.
Fronius
- Is a Fronius Full the same as a Fronius Light? No, a Full is the same as a Light + Data Manager (in the case of the Full, this is integrated). In case you want to make a new installation, you will need a Fronius Full or a Light + Datamanager. If you already have an existing installation, the Full inverter will act as master and the Light inverter as slave.
- Which wattmeter do I need for my Fronius inverter? The wattmeters (smart meters) are sold separately from the inverter and if you have a Primo inverter (single-phase), the wattmeter required will be the single-phase one, while if the inverter is a Symo (three-phase), the wattmeter required will be three-phase. Within the three-phase wattmeters you will find 2 variants: 65A and 5kA. For small/medium (residential) installations, the former is used and for large installations, the latter is used.
- Does the Goodwe EH series need an activation code? No, this series does not need an activation code, only the EHR series does.
- How do I configure my SAJ inverter? To configure your SAJ inverter you need to download the SAJ eSolar Air application. Please note that you must select the country in which the inverter is located. All configuration can be done via the app. For more information, please refer to the manual of your inverter.
Voltronic
- Is it possible to parallel Axpert King and Axpert King II inverters? No, the King and King II inverters are not compatible. Please refer to your inverter manual for more information.
- What are the main differences between different Axpert series inverters? The Axpert series of solar inverters from Voltronic are a popular choice for residential and commercial solar energy systems. The series includes several models with varying features and specifications, and in this text, we will explore the differences between the main series of Axpert solar inverters.
- Axpert VMIII
The Axpert VMIII is a high-end model that offers advanced features such as parallel operation, remote monitoring and control, and grid-tie functionality. It has a power output range of 3kVA to 5kVA, and its MPPT solar charge controller has a maximum input voltage of 145VDC. The Axpert VMIII also has an AC input voltage range of 90VAC to 280VAC, making it suitable for use in areas with unstable power grids.
- Axpert MKSII
The Axpert MKSII is a mid-range model that is designed for both off-grid and grid-tie applications. It has a power output range of 1kVA to 5kVA and can operate in parallel with up to six units. The Axpert MKSII also has a maximum solar input voltage of 145VDC and an AC input voltage range of 90VAC to 280VAC. It features an LCD display that shows real-time system status and performance, making it easy to monitor and control.
- Axpert MKS Plus
The Axpert MKS Plus is a budget-friendly option that still offers many features and capabilities. It has a power output range of 1kVA to 5kVA and can operate in parallel with up to three units. The Axpert MKS Plus has a maximum solar input voltage of 145VDC and an AC input voltage range of 90VAC to 280VAC. It features an LCD display and can be remotely monitored and controlled through a mobile app.
- Axpert King
The Axpert King is the newest addition to the Axpert series and is designed for larger residential and commercial applications. It has a power output range of 5kVA to 12kVA and can operate in parallel with up to nine units. The Axpert King has a maximum solar input voltage of 450VDC and an AC input voltage range of 160VAC to 280VAC. It also features a touch screen display and can be remotely monitored and controlled through a mobile app.
In summary, the main differences between the Axpert VMIII, MKSII, MKS Plus, and King models are in their power output range, parallel operation capabilities, maximum solar input voltage, and price point. Each model offers unique features and capabilities to meet the specific needs of different solar energy systems.
- What are the differences between the Axpert King and King II inverters? The Axpert King and Axpert King II series are both high-end models designed for larger residential and commercial solar energy systems. The primary differences between the two series are in their power output range, battery voltage range, and charging current.
- Power output range
The Axpert King series has a power output range of 5kVA to 12kVA, while the Axpert King II series has a wider range of 3kVA to 15kVA. This means that the Axpert King II series can accommodate larger solar energy systems.
- Battery voltage range
The Axpert King series has a battery voltage range of 48VDC to 120VDC, while the Axpert King II series has a wider range of 48VDC to 450VDC. This means that the Axpert King II series can work with higher voltage battery banks, which can be advantageous for larger systems.
- Charging current
The Axpert King series has a maximum charging current of 80A, while the Axpert King II series has a wider range of 0A to 120A. This means that the Axpert King II series can handle higher current charging, which can be useful for systems with larger battery banks.
Other features that are common to both series include a large touch screen display, parallel operation up to nine units, remote monitoring and control through a mobile app, and grid-tie functionality.
In summary, the main differences between the Axpert King and Axpert King II series are in their power output range, battery voltage range, and charging current. The Axpert King II series offers a wider range of capabilities and can accommodate larger solar energy systems, making it a better choice for some applications.
- What should I do if my Axpert inverter has given error F52? The F52 error that marks your inverter may be related to overheating or ventilation problems. This error indicates that the internal temperature of the inverter has reached a dangerous level and, as a protective measure, automatically shuts down to prevent further damage.
The first thing we can suggest is to check that the inverter is installed in a well-ventilated place and that there are no obstructions in the fans or air filters.
Then, we suggest checking that the capacity of the solar panels and the load do not exceed the maximum capacity of the inverter, as this can also lead to overheating of the equipment and lead to the mentioned error. If this happens to be the case, the inverter may not withstand the peak power when starting the pump. On the other hand, the problem can also be with the batteries, which cannot get that instant power.
If after checking these aspects the F52 error persists, please contact info@tienda-solar.es and send the following:
- INVERTER SERIAL NUMBER
- DESCRIPTION OF THE COMPLETE INSTALLATION
- Is it possible to parallel Axpert King and Axpert Max inverters? Yes, these inverter series are compatible with other inverters of the same series. The VMs, however, cannot be paralleled with each other. For more information, please refer to the manual of your inverter.
- Is the connection of a generator with the Axpert direct? Yes, you can connect the generator directly to the inverter, you just need to configure it correctly. You should keep in mind that the generators that work best with this type of inverter are generators-inverter. If you have a very old generator, you should make sure that the frequencies of that generator are within the acceptable range of the inverter for proper operation without many fluctuations.
- What should I do if the fans of my Axpert VM III do not stop running all day? To solve this problem with the Axpert VM III you should upgrade your inverter to the new version. In case this problem occurs, please notify the technical department.
- What should I do if I get error F09 (Bus soft start fails)? The F09 error is due to an overvoltage of the internal BUS. This can be due to 2 possible causes: either there is an overvoltage of the input panels, or the bus has been overvoltage due to high production but low consumption. This error usually occurs when there is a high production, the batteries are full and there is a low consumption. It is recommended to activate some consumption when there is a lot of sunshine and see if the error still occurs. If this is the case, the equipment will have to be sent to the technical department for repair.
- What should I do if I get error 61? In Axpert + Pylontech installations, error 61 can be due to 2 causes: either there is a fault in the configuration or in a cable, or the display version of Axpert Max (for example) is not compatible with Pylontech C-type displays. The version has to be U2 112.19. If the configuration is done correctly (see manual for more information) and it still fails, it may be due to a version failure of the device. Confirm the version (U1/U2) of the device (you can see it on the monitoring platform or on the inverter display). You can also configure it in USE mode and leave it running without communication by entering the following parameters: 05 - USE, 26 - 53.2, 27 - 53.2, 29 - 46 05 USE. In case you require the file to update the equipment, please notify the technical department.
- Where can I download the new firmware for the Axpert VM IV? In general, we do not recommend upgrading the equipment unless there is a problem with the equipment. To upgrade, you will require an RS232 to USB adapter + RS232 to RJ45 cable (this cable is included in the box).
- Is it usual to appreciate some current between the neutral and ground cables? Yes, in this type of inverters there may be some current. This does not necessarily mean that the inverter is damaged. If you are not sure if your inverter is working properly, please contact us at info@tienda-solar.es
- Does the 11kW Axpert Max make as much noise as the 7200W? It makes more noise, the bigger the inverter the more noise it makes. Even so, the inverter should not make too much noise, if you think it is making too much noise, please contact our technical service to check that it is not faulty.
It is usual for Axpert inverters to make some noise when the bypass AC IN to AC OUT is in progress. This does not necessarily mean that the inverter is damaged.
https://drive.google.com/file/d/1jlrr5qiq3oJOU7HPyYyDNJ1hC7Z0mnH9/view?usp=sharing
- What is the difference between the Axpert ULTRA 11kW 48V and the Axpert MAX-E 11kW 48V? Among the main differences between the Axpert MAX E 11k and the Axpert ULTRA 11k is that the Ultra has two independent AC power supplies automatically connected and switched and with dual outputs for intelligent load management while the Axpert Max is compatible with mains or generator power and has a single output for load management. If in doubt, please refer to the data sheets for both inverters.
- What is the difference between the Axpert MAX II TWIN 11kW 48V and the Axpert MAX-E 11kW 48V? The difference is that the MAX-E has a customisable status LED bar with RGB lights and can be connected to two independent AC power supplies which switch automatically and you can adjust the charging current for the two different power supplies via LCD and mobile operation, whereas the MAX-II can be connected to a single power supply.
- How can I configure my Axpert Max II 11kW inverter to connect Pylontech batteries? To configure your inverter you must set parameter 05 to PYL, then parameters 02, 26, 27 and 29 will be automatically set.
o If the equipment is in SBU mode, you can set the voltage at which you want to pick up from the grid again from parameter
12, if the equipment is in SUB mode, the parameter will be ignored.
o If the equipment is in SBU mode, you can set the voltage at which you want to switch back to battery mode from parameter
13, if the equipment is in SUB mode, the parameter will be ignored.
o Parameters 30 and 36 do not apply for Pylontech, they only apply for lead-acid batteries.
o With parameter 42, you can set the maximum discharge current of the batteries before switching to mains mode or shutting
down the equipment for protection.
o For more information, please refer to the manual of your inverter and battery.
General questions:
-How do bifacial solar panels differ? It is important to note that bifacial panels do NOT have twice as many cells as monofacial panels. They are the same panel with two fundamental differences:
- The backsheet or Tedlar is replaced by a layer of transparent Tedlar or other glass (glass-glass solar panel).
- The cells are connected on both sides. Tin buses circulate on both the front and back of the solar panel in order to collect the electrons generated on both sides.
-What is the difference between monocrystalline and polycrystalline cells? Monocrystalline cells perform better in direct radiation. Polycrystalline cells perform better in diffuse radiation conditions.
-Why do solar panels of different power ratings have the same data sheet? Because it is the same panel with different wattages. Each cell is classified according to its power, the power is determined by a flash test that is done to each cell. Once the test has been carried out, the cells are grouped into categories to give different power families. In this way, the panels are manufactured with cells of the same power.
- How do I know how many kWp I need for my installation? To find out how many kWp your installation needs, you should analyse your monthly consumption (unless you have a very seasonal consumption). In general, you should take the summer consumption data and check that with the kWp used in your installation, you would generate approximately 15-20% of energy above your maximum consumption. To find out how many kWh your panels would generate at your location, you should enter your location data (latitude and longitude) on the following website (https://re.jrc.ec.europa.eu/pvg_tools/es/), as well as the tilt and orientation (azimuth) data. If you think you may have partial shadows (due to chimneys or others), increase the % loss to 18%. By clicking on "View results", you can see how many kWh those kWp would generate each month. Finally, just make a rule of 3 to correctly adjust the kWp according to your consumption.
- How do I know if my solar panels are compatible with my inverter? To find out if your panels are compatible with your inverter, you should look at the following parameters in the technical data sheets of each device.
o You must ensure that the panels have an Isc value less than or equal to the maximum input current value of the inverter.
o You must also take into account that the total number of panels you put in series (look at the VMPP value) is within the
inverter's input voltage range.
o Finally, you must take into account that you can put as many strings (rows of panels) as the inverter has MPPT inputs.
- Can I mix different types of panels in my installation? Yes, but you should try to keep the VMPP and Isc parameters as close as possible to the existing panels. Lower specification panel parameters will limit the capacity of the installation, so it is advisable to use panels with slightly higher parameters (if there is no other option), rather than the other way around. In case you have more than one string (row of panels in series), you should try to make the parameters (voltage and current) of all strings as similar as possible to ensure correct operation of the inverter. A good way to ensure this is to make the strings symmetrical (same number and type of panels).
- How do I know how many panels my installation needs? To know how many panels your installation needs, you must first know how many kWp you need in total. You also need to know what type of inverter you are going to use in your installation. Finally, you must divide the total kWp by the nominal power of the chosen panel to find out how many panels you will need. Please note that the panels chosen must be compatible with the inverter.
- What should I do if one panel is not generating as much as the others? First you should make sure that the panel is not damaged or has partial shading during certain periods of the day.
- If I want to add optimisers to my installation, which ones should I use? If your inverter is of the Solaredge brand, the optimisers should be of the same brand. For all other inverters, you can use Tigo brand optimisers.
Sunpower
- What should I do if I cannot connect the Q cable to my Maxeon panel due to a plastic protective barrier? In order to connect the Q cable you must move the equipment and separate it from the panel. The plastic piece is a safety system that prevents the connection if you do not separate the elements. If you have any doubts about how to carry out the installation, you can ask a certified Sunpower technician to supervise your installation.
- What accessories do I need for my installation with Sunpower panels?
o In case your Sunpower panel is of the AC series (has microinverter), you will need to have the following accessories:
ENPHASE Envoy-S Metered for monitoring, ENPHASE Q-Relay, ENPHASE cables (1 per panel), ENPHASE male and female
connectors and the ENPHASE IQ disconnection tool. If you want, you can add the protection: ENPHASE cable termination
(you need 1 per 2 panels).
o Otherwise, your installation will have the components of a usual installation: structures, inverter, batteries (optional), etc.
General questions:
- How can I make my installation have 0 discharge to the grid? For grid-connected inverters, there is an accessory called a wattmeter / smart meter that allows you to measure the production and implement this function. There are inverters that have this function implemented. You can check in the technical data sheet of your inverter if this is the case.
- What protections does my installation need? In a solar installation you will need protections between the photovoltaic field and the regulator (MPPT). The necessary protection will be a combiner box (protection) with as many inputs as strings (rows of panels in series) the installation has and as many outputs as MPPT the inverter has (or as many single output boxes as MPPT). If the combiner box is 15A (for example), it would protect strings of up to 15A. The same goes for VDC, in case the box is 1000 VDC, you can put up to 1000 V on panels. For your solar panels, you can add surge protection, as well as a diode switch. In case you want to add batteries, you will also need protections from the batteries to the inverter. The necessary protections for this will be the disconnector and the fuses + fuse holders. To know the type of fuses needed, you should consult the inverter manual.
- What structures do I need for my panels? If you want to place the panels on the roof, taking advantage of the slope of the roof (if it is sloping), you will need coplanar structures + fuse holders. If you want to place them on flat ground (roof, terrace or floor), you will need inclined structures + suspension bolts. You should bear in mind in both cases that the layout of the panels will be influenced by the amount of space you have available. Finally, you should also consider that in order to choose a structure of any kind you need to know the thickness of the panels and that the available structures are suitable for panels up to 1.06 m wide (i.e. for panels up to 450W, usually), for larger panels you should contact the Solar Shop.
- Do the metal frames come in black? No, there are no black structures, but most of the structure is hidden underneath the panels. The only visible part in the final installation are the ends which can be hidden with black lacquer if desired.
General questions:
- How can I make sure that when I charge my car I don't blow the fuses because I have too many loads connected? From Tienda Solar we offer you a dynamic control system of the recharge so that you do not exceed the contracted power and you will not be overcharged. We recommend charging your vehicle at night.
- Can I regulate the PV power going to the car and the power going to the other loads in the house? The wattmeter monitors the PV production and you can configure it (via Bluetooth) to set the desired charging schedules (charging and discharging periods).
- Do single-phase or three-phase chargers charge faster? They charge just as fast. Single-phase can charge all PHEV and BEV electric cars.
General questions:
- How do I know which kit I need if I know how many kWp I need to cover my consumption? Once you know how much panel power you will need, you should choose an inverter that supports a maximum input power slightly higher than that value. You should bear in mind that if you plan to add batteries now or in the future, you will need a hybrid inverter.
You should also consider whether you want a stand-alone or grid-tied installation. Other factors such as the fact of having wifi, being able to do 0 discharge in grid connection (function implemented thanks to the inverter itself or using a wattmeter/smart meter, depending on the case), also influence the decision. Once you have chosen the inverter, you must choose the panels. You should look at the following parameters in the data sheets of each device.
Make sure that the panels have an Isc value less than or equal to the maximum input current value of the inverter.
You should also make sure that the total number of panels you put in series (look at the VMPP value) is within the input voltage range of the inverter.
Finally you must take into account that you can put as many strings (rows of panels) as MPPT inputs the inverter has.
In case you want batteries, you must make sure that they are compatible with the chosen inverter. You can see the list of compatible batteries in the inverter's datasheet.
The next step is to choose the structures. You must take into account that you will have to put as many strings of panels as MPPT inputs the inverter has. If you want to place the panels on the roof, taking advantage of the slope of the roof (if it is sloped), you will need coplanar structures + spandrels. If you want to place them on flat ground (roof, terrace or ground), you will need inclined structures + suspension bolts. In both cases, you should bear in mind that the layout of the panels will be influenced by the amount of space you have available.
Finally, you should also consider that in order to choose a structure of any kind you need to know the thickness of the panels and that the available structures are suitable for panels up to 1.06 m wide (i.e. for panels up to 450W, usually), for larger panels you should contact the Solar Shop.
To find out what other accessories are needed for your battery (racks, bms, etc), panels (optimisers), contact Tienda Solar. Finally, to know what protections your installation will need, you should take into account that in a solar installation you will need protections between the photovoltaic field and the regulator (MPPT). The necessary protection will be a combiner box (protection) with as many inputs as strings (rows of panels in series) has the installation and as many outputs as MPPT has the inverter (or as many boxes of one output as MPPT). If the combiner box is 15A (for example), it would protect strings of up to 15A. The same goes for VDC, in case the box is 1000 VDC, you can put up to 1000 V on panels. For your solar panels, you can add surge protection, as well as a diode switch.
In case you want to add batteries, you will also need protections from the batteries to the inverter. The necessary protections for this will be the disconnector and the fuses + fuse holders. For the type of fuses required, please refer to the inverter manual.