{ "a": "A: First you need to make sure your lithium batteries comply with the TBB CAN communication protocol, PIN 4 and PIN 5 are defined as the battery CAN port, and the lithium battery communication cable is connected to the communication port of TBB inverter (please refer to the User Manual). Then you should make sure the battery type is set as TBB Super L on the inverter and set the battery Ah capacity. ", "q": "Q: If I want to connect TBB inverter with other brands of lithium batteries via communication, how can I configure the battery parameters and connection?", "faqId": "709" }

{ "a": "A: For now only CAN communication is supported. ", "q": "Q: What is the communication method between TBB inverter and the lithium \nbattery?", "faqId": "710" }

{ "a": "A: The alarm is sent to TBB inverter via communication from the battery, and TBB inverter will not proceed with any actions. You are advised to confirm with your battery supplier for alarm details. ", "q": "Q: When TBB inverter communicates with other brand of lithium battery, there is a lithium battery related BMS alarm with the inverter. What should I do?", "faqId": "711" }

{ "a": "A: The EQ charging is only applicable to Flooded Battery, Traction Battery and OPzS Battery, and the function can be performed only when the battery reaches float charging stage.", "q": "Q: How to perform an EQ charging on TBB inverter?", "faqId": "712" }

{ "a": " A: So far there are two battery low voltage protection set point on the inverter: the low voltage/SoC protection point (when triggered, the inverter will automatically cut off the output and stop discharging the battery), and the deeply low voltage protection point (when triggered, the inverter will be powered down completely).", "q": "Q: How to configure the battery discharge cut-off voltage on TBB inverter? ", "faqId": "713" }

{ "a": "A: The battery reserved capacity refers to the battery low SoC/voltage warning threshold on the inverter. Look up the User Manual for a configuration guide.", "q": "Q: How to configure the battery reserved capacity on the inverter?", "faqId": "714" }

{ "a": "A: Look up the User Manual and find the ACin Charging item to configure the ACin charging current.", "q": "Q: How to configure TBB inverter not to charge the battery with utility?", "faqId": "715" }

{ "a": "A: The Bulk stage allows the inverter to charge the battery with its maximum current and the battery voltage will slowly rise over time. During Absorption stage, the inverter will maintain the maximum voltage to charge the battery, and the charging current reduces. Float stage is when the inverter keeps the battery at a full state of charge with small charging current.", "q": "Q: What is happening in these states of Bulk, Absorption and Float charging when the inverter charges the battery without communication?", "faqId": "716" }

{ "a": "A: It is a threshold at which the grid stops charging the lithium batteries in communication with TBB inverter. However, when charging the battery with PV energy, the PV will continue to charge the battery even when the this threshold is reached or surpassed. ", "q": "Q: What is SoC charge enough?", "faqId": "717" }

{ "a": "A: When TBB inverter is in communication with the lithium battery, this setting item can reduce a certain amount of charging voltage based on the BMS charging voltage command. For example, if the BMS charging voltage command is 53V and the item is set as 1V, then the actual inverter charging will be 52V.", "q": "Q: What is lower charge voltage?", "faqId": "718" }

{ "a": "A: Generally batteries are sensitive to temperature. For example, when the temperature drops, the battery voltage will increase, and the inverter will compensate the temperature to counteract an undesired temperature influence. This function is only designed for non-lithium batteries and the battery need to be connected to TBB inverter with a battery temperature sampling cable to enable the function.", "q": "Q: What is the temperature compensation function for? ", "faqId": "719" }

{ "a": "A: This is the battery temperature sampling interface designed for non-lithium batteries whose temperature can be collected via the battery sampling cable.", "q": "Q: What is the function of BAT Sample terminal on the inverter?", "faqId": "720" }

{ "a": "A: This function is enabled by default, and you only need to set a value.", "q": "Q: How to enable the power assist function?", "faqId": "721" }

{ "a": "A: This function is mainly to limit the AC input current, by limiting either the grid power or generator power. For example, when the setting value is configured as 10A while the loads need 15A, the battery will provide additional 5A to assist the AC input. When the load demand reduces to 5A, the AC input will provide additional 5A to charge the battery.", "q": "Q: What is Power Assist function?", "faqId": "722" }

{ "a": "A: AC in derating is a setting item to limit the charging power of the grid when the battery is at its normal voltage, while AC in derating in LV is when the battery is at a low voltage to perform such limit. When the battery is at a normal voltage, the inverter will take the value of AC in derating to perform AC charging, but when the battery reaches a low voltage, the inverter will take the larger value of the two items to perform AC charging.", "q": "Q: What is the difference between AC in derating and AC in derating in LV?", "faqId": "723" }

{ "a": "A: ①When the battery reaches its low voltage, the grid will charge the battery and power the loads. ②The battery was at low voltage, triggering the grid to charge the battery and feed the loads; the process keeps on until the threshold value to stop the grid input is met. ③TBB inverter is overloaded, so the grid power is being used instead ④You accidentally clicked the setting item Send AC in Charge Command under this mode. ⑤Check whether the Bypass Assist mode is enabled. Under this mode, the gird is only connected to the system, but its power is not actually used.", "q": "Q: My TBB inverter is set to the Battery First mode but the grid power is still being used. Why?", "faqId": "724" }

{ "a": "A: This is a VA current, a form of reactive current. ", "q": "Q: Under Bypass Assist mode, why is there a small current detected when the system is connected to the grid? ", "faqId": "725" }

{ "a": "A: The feature is applicable to the scenario when TBB inverter is connected to an unstable AC input source. Normally the waveform and frequency of the grid or generator to which TBB inverter is connected are relatively stable, so you do not need to enable this mode and you may simply keep the default 0-Normal. However, they could also be too unstable to establish a successful connection and in this case, it is advised that you turn on 1-Weak AC input to ensure a smooth connection.", "q": "Q: What is AC wave harmonic adaption for?", "faqId": "726" }

{ "a": "A: You are advised to look up the specifications of the specific inverter since each inverter model is designed with a different capacity. Taking Apollo Matrix 5.0S as an example: when the inverter is working on AC in, the maximum current of AC OUT2 is up to 32A, the maximum current of AC OUT1 is up to 50A, but the maximum current of AC OUT1+AC OUT2 should not exceed 50A. When the inverter disconnects with AC in, the two connected loads should be reasonably configured according to the rated power of the inverter.", "q": "Q: What is the maximum current output for TBB inverter AC OUT1 and AC OUT2?", "faqId": "727" }

{ "a": "A: The AC OUT1 is for connecting critical loads. It supports parallel operation, but there is no setting available to control its on/off. As long as the inverter produces an output, it will remain on. The AC OUT2 is for connecting normal loads. It does not support parallel operation, but there is an independent setting designed to control its on/off.", "q": "Q: What is the difference between AC OUT1 and AC OUT2 of TBB inverter?", "faqId": "728" }

{ "a": "A: Kinergier Pro and Apollo Matrix support up to 9 units for parallel and three-phase operation and Apollo Maxx supports up to 6 units. Kinergier Pro, Apollo Matrix and Apollo Maxx support up to 3 units for parallel and single-phase operation.", "q": "Q: What is the maximum number that TBB inverters support for parallel \nconnection?", "faqId": "729" }

{ "a": "A: No, you only need to connect a Kinergy Dongle to the master inverter.", "q": "Q: For system with multiple inverters connected, do I need to connect each inverter to Kinergy Dongle?", "faqId": "730" }

{ "a": "A: Make sure inverters have the same specifications and program versions for a parallel operation. For now, to make a three-phase parallel system function properly, the number of inverters in the U phase must be greater than or equal to the number in the other two phases.", "q": "Q: What are the requirements for inverters to be connected in parallel?", "faqId": "731" }

{ "a": "A: Not supported.", "q": "Q: When multiple inverters operate in parallel, can each of them has its own \nbattery bank?", "faqId": "732" }

{ "a": "A: No recommended. Having TBB inverter mounted horizontally will negatively impact heat dissipation since its heat dissipation port is vertically upward.", "q": "Q: Can TBB inverter be mounted horizontally?", "faqId": "733" }

{ "a": "A: Yes, each inverter can be connected to PV panels with different capacity.", "q": "Q: For multiple TBB inverters operating in parallel, can each of them be \nconnected to PV panels with different capacity?", "faqId": "734" }

{ "a": "A: Not supported for now.", "q": "Q: Can I access the inverter data on NOVA Online Portal by simply plugging the network cable into the inverter?", "faqId": "735" }

{ "a": "A: For now our inverters only support the Y connection in the three-phase system.", "q": "Q: How is the inverter AC input and output wired in the three-phase system? \nDelta connection or Y connection?", "faqId": "736" }

{ "a": " A: Not supported yet but it will be in the future. ", "q": "Q: Can TBB inverter be connected to the grid and the generator at the same \ntime?", "faqId": "737" }

{ "a": "A: Yes, TBB inverter supports connection with external MPPT, as long as you set the correct number of MPPTs on the inverter (the number should be the combination of 1 built-in MPPT + external MPPT), connect the external MPPT to the comsys port of the inverter, and set the correct address on this MPPT (normally starting from address 2, since address 1 is for the built-in MPPT).", "q": "Q: Can I connect an external TBB Solar Mate to my all-in-one solar inverter with built-in MPPT?", "faqId": "738" }

{ "a": " A: These are two connection methods available for setting on TBB inverter. When one of the connection method is enabled the other must be disabled, otherwise it will not take effect. The Common neutral line is to connect together the neutral of the AC input and output; the Connect Neutral to GND Inside is when the AC source is connected to TBB inverter, the neutral of the AC output will be disconnected from the inverter grounding wire, and when the AC source is disconnected from TBB inverter, the neutral of the AC output and the inverter grounding wire will be connected.", "q": "Q: What do the inverter settings Common neutral line and Connect Neutral to GND Inside mean?", "faqId": "739" }

{ "a": "A: Normally it is recommended to use a generator with power capacity 1.5-2 times than that of your inverter.", "q": "Q: How to calculate the generator size for TBB inverter?", "faqId": "740" }

{ "a": "A: In the off-grid application, to match your battery capacity with TBB off-grid inverter, it is recommended to use lithium battery rated at 0.5C or lead-acid battery rated at 0.25C.", "q": "Q: How to calculate the battery size for TBB inverter?", "faqId": "741" }

{ "a": "A: You need to program your TBB inverter in accordance with the frequency shift, specifically the start and stop frequency of the PV inverter.", "q": "Q: What are the requirements for my TBB inverter to work with other brands of PV inverter when they are AC coupled?", "faqId": "742" }

{ "a": "A: The power of our inverters is calculated with the apparent power (VA), so a certain amount of reactive power will be indicated even when there is no load connected.", "q": "Q: Why does the inverter indicate a percentage of load consumption with no \nload connected?", "faqId": "743" }

{ "a": "A: Yes, TBB inverter can automatically control the start and stop of a generator with the AGS function. A variety of settings are available for triggering the AGS function, such as load power, SoC and others. For now TBB Kinergier Pro, Apollo Maxx and Apollo Matrix series are equipped with the AGS function.", "q": "Q: Does TBB inverter support AGS function?", "faqId": "744" }

{ "a": "A: Normally a cable thickness from 28 to 12AWG would work. ", "q": "Q: For the AGS function, what are the specifications of the cable to connect the inverter and the generator?", "faqId": "745" }

{ "a": "A: Put the inverter into standby mode and you can change it. Some parameters cannot be set when the inverter is working, otherwise the inverter may be negatively affected.", "q": "Q: What should I do when some parameters on the inverter cannot be set?", "faqId": "746" }

{ "a": "A: Yes, TBB Qoma series supports a three-phase AC output.", "q": "Q: Do you provide any 3-phase inverter?", "faqId": "747" }

{ "a": "A: You do not need to do any configuration since our inverter is set to use the PV energy as its first priority by default under whatever working mode.", "q": "Q: How to set using the PV energy first on TBB inverter?", "faqId": "748" }

{ "a": "A: The time settings can be made on the inverter or via the NOVA Online Portal where you can click Time synchronization button and the inverter will synchronize to the current local time.", "q": "Q: How to modify the time of TBB inverter?", "faqId": "749" }