Basic Questions

Basic questions:

How do I reach TITAN SOLAR?

Tel. 030 4470 51 21 available Tue.-Fri. 9:00 a.m. - 4:00 p.m. (no technical hotline!)

Technical inquiries: technik@titansolar.de

General and dealer inquiries: office@titansolar.de

Cancellations and invoices: buchhaltung@titansolar.de

Inquiries about cooperation and for major customers: info@titansolar.de

Can I register as a dealer?

Yes, please send a message to office@titansolar.de AFTER you have registered in the shop with your company data.

How does TITAN SOLAR ship?

We send everything that is possible with DHL as a package. So all shipments up to 31.5 kg. Everything else is handled with forwarding shipping. That's why we absolutely need your telephone number for the delivery.

Tracking link for shipping: https://www.ids-logistik.de/de/

Can I pick up the goods personally from you in Berlin and pay in cash or with EC?

No, this is not possible. Our goods are stored in forwarding warehouses, nobody has access there. Below the company address is only the office.

Where did the memory compatibility list go?

In the footer menu at the bottom right

General technical information:

Rated output power:

This value describes the power that your inverter can produce continuously, expressed in watts (W) or kilowatts (kW). Output voltage: expressed in V (volts) or Vac (volts alternating current). It must be ensured that the selected inverter can be synchronized with the local grid in your geographic area. Maximum efficiency: This is the maximum conversion efficiency between the power of the solar panels and the power of the inverter (direct consumption). Maximum DC voltage: Expressed in V (volts) or Vdc (volts direct current); this is the output voltage of the solar field, which must not be exceeded. When sizing the system, the specifications of the solar panels (not forgetting the temperature coefficients) must be taken into account to define the number of panels that can be coupled to the inverter. Maximum DC current: Expressed in amperes (A), this is the current produced by the solar battery, measured at the input of the solar panel of the inverter. to generate electricity. When sizing the installation, it is important to ensure that the panels are capable of supplying voltage within this range during operation.Start-up voltage: Specified in V (volts) or Vdc (volts direct current) and is the voltage from which the inverter can generate electricity. When sizing your installation, you must ensure that the panels are capable of delivering a higher voltage than this value. Maximum Load Current: This value is expressed in A (Amps). It must be ensured that this value corresponds to the rated output power of the inverter. For example, for a 3kW inverter it is reasonable to have a charge current of 60A for a 48V battery bank at the nominal voltage, as this way almost all of the instantaneous power can be charged in the batteries. If the charger is undersized, there is a risk that part of the energy generated by the battery will be lost. Maximum discharge current: This value is given in A (amperes). It must be ensured that this value is consistent with the performance of the inverter. For example, for a 3kW inverter it is reasonable to have a discharge current of 60A for a 48V battery bank at the nominal voltage, as this way all the power drawn by the inverter can be supplied by the battery and thus no energy is drawn from the grid. Open-circuit voltage: Open-circuit voltage is the voltage from a photovoltaic module when no load is connected. The open circuit voltage is the maximum voltage of a module. It is specified as UOC in volts and should be listed on the module data sheet. During the commissioning of a photovoltaic system, the no-load voltages of individual modules or entire module strings are measured. The no-load voltage of a solar module depends on the temperature of the modules. This is reflected in the temperature coefficient. Nominal battery voltage: expressed in V or Vdc, it gives an idea of the battery configuration to be taken into account depending on the batteries chosen (48V modules or 12V, 6V, 2V batteries, in series or in parallel). Transmission time: this data is only transmitted for inverters with backup function. It is the time it takes to switch from grid-tied mode to backup (emergency power) mode. If the transmission time is less than 20ms, the power supply will not be interrupted.

Certifications:

If the inverter is connected to the public grid and can also feed into the grid, it is imperative that the inverter complies with the standards applicable in your geographical area.Type of inverter: The inverter can be with or without a transformer (TL for transformerless). Transformerless inverters generally have higher conversion efficiencies than transformer-type inverters. Make sure the panels you choose are compatible with the inverter.

Parallel connection:

When modules are connected in parallel, the current is added, the voltage remains the same. This is important for the selection of the modules and the coordination of the module data and the number of modules with the inverter. Only strings are connected in parallel.

Series connection: When modules are connected in series, the voltage is added according to the number of modules. This is important for the selection of the modules and the coordination of the module data and the number of modules with the inverter. Only modules are connected in series. Never connect in parallel, otherwise the amount of current will add up and the MPPTs will be defective when connected.

AC coupling:

An AC coupling is usually carried out in an already existing system if you only have a normal inverter and no battery or hybrid inverter. The parallel coupling takes place at the star point of the feed of the other inverter and thus supplies the 2nd inverter with converted AC-PV energy, since the 2nd inverter is seen as a consumer. This now converts the AC energy back into DC energy and fills the memory with it. If necessary, i.e. when no more PV energy comes from the roof, the consumers then draw the electricity from the AC-coupled storage system, which in turn converts the energy previously converted into DC back into AC and makes it available to all consumers.

high voltage:

In the PV sector, a distinction is made between high-voltage devices and low-voltage devices. High-voltage inverters are not very different from low-voltage inverters. But the batteries do. High-voltage storage units work in a voltage range between 100 V and approx. 400 V and a current of up to approx. 50 A. Due to the "low" current, high-voltage storage units can be connected to the high-voltage inverter via plug and play. The cables are much thinner than with low-voltage storage. Most of the time, the storage cables are also installed using the regular MC-4 connectors to connect the DC cables to the inverter. It is important to ensure that the area where the high-voltage battery is connected is marked accordingly. If there is no designation for the battery on the inverter, the inverter is also not designed for storage operation.

High-voltage devices are usually more expensive than low-voltage devices. This is because they can provide much more power than low-voltage storage. In this way, e-cars can be charged faster, for example, or other devices such as heat pumps can be supplied with sufficient energy when there is no power from the PV. High-voltage batteries last longer and are easier to install. They are more efficient because they have to convert from a higher DC voltage to 400V AC and not from around 50V as with low-voltage storage.

low voltage:

Low-voltage devices are the most widely used devices in the PV world. They are cheaper than HV devices and completely sufficient for many households. LV battery inverters have a separate battery connection that must be screwed. This again requires an installer, according to German law. Since the connection is not pluggable.

The NV storage works with a voltage of approx. 48-56V and currents of approx. 100A -500A. Due to the high currents, the cable to the inverter must also be correspondingly thick. Depending on the length, there can be cross-sections of 120mm² per wire. It is essential that you seek advice from a specialist who will calculate the appropriate cross-sections if the storage unit cannot be located near the inverter. LV storage is cheaper because the efficiency is not so high, since it has to be transformed from approx. 50V DC to 400V AC. More losses occur here than with HV storage. The current throughput is very high here, but due to the low voltage only outputs of about 5-10kw are achieved here. But THAT is absolutely sufficient for a normal household without great equipment that has to be operated at night! Of course, the price is also a decisive factor here and it is exactly the right solution for most users.

What happens:

...when in an OFF-grid system all consumers are served and the storage is full with the energy coming from the roof? Very easily. The inverter no longer accepts them. It is already converted into heat on the modules and released into the environment. The modules heat up and this is detrimental to both service life and efficiency. The hotter the module, the lower the efficiency. Therefore, in principle, a feed-in is always better, if this is possible. Even if it is only minor, you should consider whether to feed it in after all. If the effort and paperwork of the authorities is too much for you, you can simply write a waiver to the energy supplier that he will waive the remuneration. The energy supplier actually only wants to know who is feeding how much somewhere. Another possibility is a larger memory. In the poorer seasons, however, the storage tanks may not be able to be filled properly. It's not good for memory either. However, this can also be filled through the net and therefore there is no risk of damage. Unlike the modules, which lose efficiency through constant heating. Here you have to think carefully about which is the best solution for you.

Planning and project planning:

We are not a planning or projecting company, nor are we an installer company. If you send us specific data such as current, voltage, power, number of strings of your existing or planned system, we will be happy to provide information as to whether this is technically possible with our devices. But we don't plan complete systems.

Longer delivery times:

The market has imploded because every German now wants to have storage due to the 0% sales tax in 2023, preferably yesterday. Global players with money and power dominate the market and are served first as small companies that make good prices. Therefore, delivery bottlenecks can also occur with us. There are also unforeseen coincidences, as well as unannounced sick leave, a shortage of skilled workers in every industry or simply different working mentalities in other countries. The 0% only applies to

Questions about our low-voltage storage 51.2V (48V):

Scope of delivery:

All of the installation materials described in the instructions are included with our devices.

NOT included are: AC cable, AC protective devices that are required in the operating instructions, DC protective devices that are required in the operating instructions and smart meters.

discharge currents:

Example: The WR DEYE SUN 12K creates 240A, no matter how much memory you attach to it and what the memory can do. The WR limits the battery discharge currents. Which also makes sense. E.g.: With 60KW you would have 6 accumulators of 10 KW each and 200Ah discharging current. So 1200A. No WR hardware can do that. Hence the limitation by the WR and the BMS. The size of the memory only changes the capacity, i.e. indirectly the time that this energy can be released, but not the maximum amount of energy that can be processed.

SOC:

(State of Charge) shows the current state of charge of the battery. There is a minimum SOC. Depending on the battery, this is between 5 and 20% of the capacity. This is the limit that defines the point to which the battery can discharge before it draws power from the grid to recharge itself. This happens as a protective measure against deep discharge of the memory. There is no maximum SOC because there is no reason not to charge a battery to 100%.

Our titanium solar storage systems have a minimum SOC of 5%. This means that they can discharge up to 5% without being damaged by deep discharge. You use 95% of your capacity to supply your house.

Which cables are included?

With all orders from January 1st, 2023, in addition to the communication cable, there are two 60cm long connection cables between the inverter and storage system in AWG2 (MM2). (cable cross-section 33.6mm²) included.

Can I just connect the storage to the mains?

NO, DEFINITELY NOT. The connection is made only via an 'inverter. The inverter must have a battery connection. If you have an inverter that is not connected, you must either replace the inverter or connect another inverter in addition to the existing PV installation.

Is there a way to shorten the delivery time for an extra charge?

No, this is not possible. We order significantly more memory each week than is sold. However, we do not use this surplus to realize higher prices for stock goods, but to shorten the delivery times for all customers in the medium term.

Which BMS is installed?

The PACE BMS in version 1.3 (as of 02/23) with an active balancer (2A). The 10kWh storage all have BYD A grade prismatic cells.

Is there a negative list of inverters that are not compatible with Titan Solar storage?

Not really, the list would also be very long. Our compatibility list is very long and there are certainly more inverters that are compatible. But it is also relatively easy for you as a customer to find out whether your inverter is compatible. If you have an inverter with a high-voltage connection for storage, it will definitely not work with our low-voltage storage. For example, if you have a Growatt MOD 3~10KTL3-XH inverter and read in the data sheet: "Battery connection 600 V-950 V", then unfortunately 51.2 V storage really doesn't work, that's completely out of the question.

Can I connect the storage to a balcony power plant?

We are currently not aware of any inverters for balcony power plants that have a storage connection. You can certainly tinker something and theoretically connect a storage tank with a charge controller, but such manipulations would invalidate all approvals for the system.

Questions about inverters TITAN SOLAR 5000TS/6000TS / Growatt 5000ES/6000ES:

What is the password to write the data in PC Keeper?

The password is either 123456 or the current date in American format (depending on the series).

smart meter:

Basically, smart meters are used to record the consumption and feed-in. In particular to monitor and display this in your app or in a web portal. You can only access your system via an app with a smart meter, without having to be directly at the inverter. However, our Chint smart meters also have a connection for the current measuring clamps and thus also transmit the values to the inverter via RS-485. If you set up a system parallel to your current system, you will need another smart meter than you already have, since most smart meters are not compatible with other devices. With our Deye inverters, the smart meters from "Eastron" are also compatible if you do not opt for the Chint.

Can I configure this inverter as a pure battery inverter as an extension to my existing PV system?

Yes, that is possible - both with these inverters and with the DEYE hybrid inverters.

Compatibility:

The Titan solar inverters are 100% identical to the Growatt. It runs every Growatt app and software.

You can find our compatibility list here: https://www.titansolar.de/i/kompatibilitaetsliste

Warranty Claims:

In each user manual of our sold products it is stated that the installation rules of the respective country must be followed. Please consider that in Germany, the system must be installed and approved by a specialist company in accordance with NAV §13. According to HWO §7 1.1a, this must have an entry in the register of craftsmen in accordance with the provisions. In the case of a warranty, you are responsible for providing evidence of measurement and acceptance reports.

Questions about inverters from the DEYE Hybrid series:

Can I use the DEYE inverters to sell excess electricity that is left over when the storage system is charged to the grid?

Yes, that is possible, the DEYE inverters all have the VDE certificates for the feed-in. The files can be found here under DOCUMENTS.

Which optimizers are compatible with the Deye inverters?

Deye recommends Tigo's optimizers.

smart meter:

However, our Chint Smartmeters also have a connection for the current measuring clamps and transmit the values to the inverter via RS-485.

If you set up a system parallel to your current system, you will need an additional smart meter than you already have, since most smart meters are not compatible with other devices. With our Deye inverters, the smart meters from "Eastron" are also compatible if you do not opt for the Chint. The Eastron smart meter also works with the DEYE.

Backup power function (emergency power function):

Our Deye and Titan solar inverters have a backup power function. By default, this feature is disabled and can be enabled through the user interface. The backup power function can only be activated if the inverter is operated in a backup power system with a switching device. If the system is retrofitted with a switching device, the battery configuration must be reset and carried out again. The backup power system can then be configured. The configuration is done using the installation wizard on the user interface of the battery inverter. The battery backup function allows the inverter to form a backup power grid in the event of a power failure. This grid uses energy from the battery and the PV system to supply the home grid. If the automatic backup power mode is activated, in the event of a grid failure, the switchover device disconnects the PV system and the home network from the utility grid and connects them to the backup power grid. After a short switching time, the battery-backup grid and the consumers connected to it can be supplied with energy from the battery. If necessary, the energy from the PV system is used as a supplement. The battery is charged during backup power operation using the existing PV system. However, it is possible to deactivate the charging of the battery by the PV system during backup power operation by setting a parameter. As soon as the utility grid is available again, battery-backup operation is automatically deactivated and consumers are supplied with energy from the utility grid again. If the utility grid fails and the battery is completely discharged, there is initially not enough energy available to provide a stable battery-backup grid. In such a case, it is necessary to charge the battery using the PV array. Only when sufficient energy is stored in the battery can the battery inverter set up a reliable battery-backup network again. In order to use the PV system to charge the battery, the battery inverter sets up an island grid and uses the energy reserve of the battery. If sufficient PV energy is available, the PV inverters start automatically and the battery is charged with energy from the PV system. This charging process continues until a predefined charge level is reached, which enables the battery inverter to provide a stable battery-backup grid. By adjusting the parameters, it is possible to determine the state of charge up to which the battery is charged and discharged. If the battery inverter fails to set up the stand-alone grid despite several attempts due to insufficient PV energy, the battery inverter and the battery switch to sleep mode.Black start function: Our inverters from Deye and Titansolar have a black start function and an auxiliary battery that provides energy for the black start. In backup power systems, you have the option of connecting a commercially available switch for the black start of the inverter and the battery. The black start switch is used to manually switch on the backup power operation if the battery and the inverter are in sleep mode in the event of a grid failure and are therefore unable to provide any energy. By manually switching on the black start switch, energy is provided from the auxiliary battery in order to switch the battery and thus also the inverter automatically from sleep mode to operation so that the inverter can provide energy from the battery. You can end battery-backup operation by switching it off manually. A prerequisite for the black start function is that at least one battery capable of black start is connected to the input of the inverter.

Generator connection:

The generator connection can be used both as an input and as an output. Here, devices can supply the system with additional power if required. For example when connecting another additional power station. Diesel generator, balcony power plant, existing PV system. Please note that the input can only be fed with AC. The WR then takes this energy and introduces it directly into your system without detours. This can be helpful if the public grid is out for a long time or you need more power overnight.

YouTube videos about DEYE:

https://www.youtube.com/watch?v=tzqbEFVZCTg Deye Smartload Application

https://www.youtube.com/watch?v=6MchYVnORXE Deye functions

https://www.youtube.com/watch?v=ue7BOX3rPXI Deye generator connection

https://www.youtube.com/watch?v=wpm81IyiY7I Deye training video

https://www.youtube.com/watch?v=miOrLBp4t0Q Deye Setup Help

https://www.youtube.com/watch?v=mROS_A3ppS8 Deye test and evaluation

https://www.youtube.com/watch?v=MvItd2g7ZYA Deye Test and Evaluation II

https://www.youtube.com/watch?v=3QXC8gYe1sk Deye and smart meters

Compatibility:

You can find our compatibility list here: https://www.titansolar.de/i/kompatibilitaetsliste

phasiness:

An inverter can be single-phase or three-phase. This means that it only feeds 230V into the system with one wire or with 3 wires, which transport the current phase-shifted by 120° and feed in 400V. This is important when using 3-phase devices that are operated with 400V. Normally with a single-phase system you have to reconnect everything that is to be supplied with PV to this one phase. This is not the case with 3-phase inverters. However, a single-phase system can also be used if you have installed a balancing meter. This calculates the current not used in the first phase and fed into the public grid against what is drawn from the grid in phases 2 and 3. This means that a single-phase inverter that is "ON-Grid" can also be used in small PV systems to operate a 3-phase system. However, a single-phase inverter is not an "OFF-Grid".ON-Grid: An inverter is ON-Grid if it can feed into the public grid. To do this, the PV system must be entered in the market register and registered with the grid operator with the appropriate certificates.OFF-Grid: An inverter is OFF-Grid if it CANNOT feed into the public grid. Then he does not need to register with the network operator and therefore also no corresponding certificate.Certificates:You can download our certificates here: https://www.titansolar.de/i/dokumente

Support:

Support for our Deye WR is currently being set up in Germany and should be available by the end of the year. WE are just an online shop, no support! We help as best we can, but we also have our limits.Apps:

The apps for our Deye devices are "Solarman" or directly "Deye cloud". The Growatt app should help for Growatt, Titansolar 6000+ or Sunforce, since all devices are identical. Look in your respective store. Smart meter: A smart meter is used to monitor the data processed and made available by the inverter. These are then made visible via the app.

Warranty Claims:

Clamp Meters:

As the name suggests, current clamps (CTs) measure current. In this case, the electricity for the whole house. They are therefore always installed directly behind the counter before the first terminal point. They are necessary to "tell" the inverter when there is a grid failure and also measure the consumption and feed-in. The current measuring clamps are usually connected directly to the inverter. However, the new smart meters now also have the option of connecting current measuring clamps there and communicating with the inverter via RS-485 and transmitting this data.

DC inputs:

Why do some of our inverters have 2 DC inputs on PV1 and only one on PV2?

Here, at the PV1 input, 2 strings go to an MPPT. Both strings of PV1 are connected in parallel here and then go to an MPPT that can process more current. Actually, it's more for roofs with different orientations and multiple smaller areas to merge smaller strings. When designing your strings, pay attention to the corresponding values in the data sheet.

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