| What is the Needed Database Entries article about? | It explains which database records are required for the HELIOS 3D Electric module, including grids, cables, transformers, inverters, and combiner boxes. It also explains which values are required, optional, or relevant for more accurate cable loss and yield assessment calculations. (Helios 3D | HELP CENTER) |
| Where is the Needed Database Entries topic located? | It is part of the vertical menu workflow under Overview of Commands > Vertical Menu > Electric > Needed Database Entries. (Helios 3D | HELP CENTER) |
| What is the main purpose of the Needed Database Entries article? | Its purpose is to describe the electrical component master data that should exist in the HELIOS 3D database before or during electrical design, so the Electric module can place devices, calculate device quantities, calculate cable lengths, and perform loss or yield-related checks. (Helios 3D | HELP CENTER) |
| Which database records are needed for the Electric module? | The Electric module requires device records such as grids, cables, transformers, inverters, and combiner boxes. (Helios 3D | HELP CENTER) |
| Where should electrical device records be created? | With the exception of grids, electrical device records can be created during layout creation, but the article recommends creating them in Component Management in the HELIOS database application. (Helios 3D | HELP CENTER) |
| Where must grid records be created? | Grid records must be created in the Choice List module because a grid is not a physical device but an abstract one. (Helios 3D | HELP CENTER) |
| Why are grids created in Choice Lists instead of Component Management? | Grids are abstract records rather than physical devices. Therefore, they must be created in the Choice List module instead of Component Management. (Helios 3D | HELP CENTER) |
| Can transformers, inverters, combiner boxes, and cables be created during layout creation? | Yes. Except for grids, these device records can also be created while creating a layout, although the recommended workflow is to create them in Component Management first. (Helios 3D | HELP CENTER) |
| Why does the article recommend entering as much device information as possible? | In the first version of the Electric module, many electrical device fields are not yet used in calculations, but entering them is recommended to avoid updating all records later when future program functionality starts using those fields. (Helios 3D | HELP CENTER) |
| Are all electrical device fields currently used internally by HELIOS 3D? | No. The article explicitly states that some values are not currently used internally by the program. (Helios 3D | HELP CENTER) |
| How are required electrical device fields marked? | Inputs that are essential for a device to function are marked with a red frame. For example, the count of an electrical device is required because transformers, inverters, or combiner boxes cannot be used without this value. (Helios 3D | HELP CENTER) |
| What does a red frame around an input field mean? | A red frame means the input is essential for the device to function and must be completed. (Helios 3D | HELP CENTER) |
| What does an orange frame around an input field mean? | An orange frame marks values that are optional but important for accurate calculations, such as conductor material and resistivity for cables. Missing these values may still allow cable quantity calculation, but loss calculation will not be accurate. (Helios 3D | HELP CENTER) |
| What does a sky-blue frame around an input field mean? | A sky-blue frame marks optional values that contribute to a more accurate yield assessment calculation. (Helios 3D | HELP CENTER) |
| Can a cable be used if conductor material or resistivity is missing? | Yes, the cable can still be used to calculate the total required cable quantity, but the loss calculation will not be accurate without these inputs. (Helios 3D | HELP CENTER) |
| What should I check if an electrical device cannot be used? | Check whether all red-framed required fields are filled, especially the device count for transformers, inverters, or combiner boxes. The article states that these devices cannot be used without the required count value. (Helios 3D | HELP CENTER) |
| What should I check if cable loss calculation is inaccurate? | Check whether resistance, impedance, conductor material, resistivity, and conductor cross-section are entered correctly. Missing conductor material or resistivity can still allow cable quantity calculation, but loss calculation will not be accurate. (Helios 3D | HELP CENTER) |
| What is required for a transformer to be usable? | For transformers, the input count and rated voltage are required. The efficiency value is used to reduce the power on the output cable before cable loss calculation begins. (Helios 3D | HELP CENTER) |
| How are transformers inserted in the electrical layout? | Transformers are automatically inserted into device areas based on the assignments in the layout. (Helios 3D | HELP CENTER) |
What does Nominal Voltage [V] mean for a transformer? | It is the nominal input voltage on the low-voltage side. (Helios 3D | HELP CENTER) |
What does transformer Nominal Current [A] mean on the input side? | It is the nominal input current on the low-voltage side. (Helios 3D | HELP CENTER) |
What does transformer Input Count define? | It defines the number of transformer inputs and is required for the transformer to be used. (Helios 3D | HELP CENTER) |
What does transformer Power Rating [VA] define? | It defines the rated power at 25°C on the medium-voltage side. (Helios 3D | HELP CENTER) |
What does transformer Nominal Power [VA] define? | It defines the nominal output power at 40°C on the medium-voltage side. (Helios 3D | HELP CENTER) |
What does transformer Rated Voltage [V] define? | It defines the rated grid voltage on the medium-voltage side and is required for the transformer to be used. (Helios 3D | HELP CENTER) |
What does transformer Nominal Voltage min/max [V] define? | It defines the nominal AC voltage range on the medium-voltage side. (Helios 3D | HELP CENTER) |
What does transformer output Nominal Current [A] define? | It defines the nominal output current on the medium-voltage side. (Helios 3D | HELP CENTER) |
What does transformer Rated Power Frequency [Hz] define? | It defines the rated power frequency on the medium-voltage side. (Helios 3D | HELP CENTER) |
What does transformer Efficiency [%] do? | Transformer efficiency reduces the power delivered to the output cable and decreases cable losses based on cable characteristics and length. A value of 0.00% is interpreted as 100%, meaning there is no internal loss. (Helios 3D | HELP CENTER) |
| What happens if transformer efficiency is set to 0.00%? | HELIOS 3D interprets 0.00% as 100%, meaning no internal transformer loss is applied. (Helios 3D | HELP CENTER) |
| Which inverter values are currently required? | The article lists required inverter values as Input Count, Maximum Voltage (Udc MPP), Nominal Voltage (Vac nom), and Euro Efficiency. It also documents several additional required fields in the detailed inverter sections, including minimum voltage and power cut values. (Helios 3D | HELP CENTER) |
| Which inverter value is currently considered for automatic placement quantity? | Currently, only the inverter input count is considered for determining how inverters are used. Other values improve yield assessment or future calculations, depending on the field. (Helios 3D | HELP CENTER) |
| Can MPPTs be added to an inverter record? | Yes. MPPTs can be added to the list below the inverter input fields. (Helios 3D | HELP CENTER) |
What does inverter Max. Voltage (Voltage Cut, Udc MPP max) define? | It defines the maximum MPP voltage. If the voltage exceeds this value, the inverter is disabled for safety reasons. This value is considered for yield assessment if set. (Helios 3D | HELP CENTER) |
What does inverter PV Voltage (Voltage Limit, Udc max) define? | It defines the maximum PV voltage limit. If the voltage exceeds the Voltage Limit but not the Voltage Cut, the voltage is reduced to the limit value. This value is considered for yield assessment if set. (Helios 3D | HELP CENTER) |
What does inverter Min. Voltage [V] define? | It defines the minimum voltage at rated power. Below this value, the device is not active, and strings cannot be connected if the STC string voltage is too low. (Helios 3D | HELP CENTER) |
What does inverter Input Count define? | It defines the number of inverter inputs. HELIOS 3D uses this value to calculate the number of inverters required. Each input can connect a single module string for string inverters or a combiner box for central inverters. (Helios 3D | HELP CENTER) |
| Where is an inverter inserted during placement? | Depending on the placement settings, the inverter is inserted behind the last string assigned to it. (Helios 3D | HELP CENTER) |
What does inverter Max. Power (Power Cut) define? | It defines the maximum power cut. If this limit is exceeded, the inverter is disabled for safety reasons. This value is considered for yield assessment if set. (Helios 3D | HELP CENTER) |
What does inverter Power (Power Limit) define? | It defines the maximum PV power limit. If the Power Limit is exceeded but the Power Cut is not exceeded, the power is reduced to the limit value. It is considered for cable loss calculation and yield assessment if set. (Helios 3D | HELP CENTER) |
What does inverter Min. Power (Power Cut) define? | It defines the minimum power cut. Below this value, the inverter is not active. This value is considered for yield assessment if set. (Helios 3D | HELP CENTER) |
What does inverter Frequencies (Fac) define? | It allows selection of possible frequencies, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does inverter Nominal Voltage (Uac nom) define? | It defines the nominal voltage for the inverter output and is used in cable loss calculation. (Helios 3D | HELP CENTER) |
What does inverter Nominal Current (Iac nom) define? | It defines the nominal current for the inverter output, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does inverter Max. Current (Iac max) define? | It defines the maximum current for the inverter output, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does inverter Max. Efficiency define? | It defines the maximum inverter efficiency, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does inverter European Efficiency define? | It defines the European efficiency of the inverter and is mandatory for yield assessment. (Helios 3D | HELP CENTER) |
| What should I check if strings cannot be connected to an inverter? | Check the inverter’s minimum voltage and input count. The article states that below the minimum voltage at rated power, the device is not active and strings cannot be connected if the STC string voltage is too low. (Helios 3D | HELP CENTER) |
| What should I check if the number of inverters seems wrong? | Check the inverter Input Count, because HELIOS 3D uses this value to calculate the number of inverters required. (Helios 3D | HELP CENTER) |
| What should I check if inverter yield assessment is incomplete? | Check required and yield-relevant inverter values such as voltage cut, voltage limit, power cut, power limit, minimum power, and European efficiency. The article states that several of these values are considered for yield assessment if set. (Helios 3D | HELP CENTER) |
| What is required for a combiner box? | The required combiner box inputs are Input Count and Abs. Max. PV-Voltage (Udc max). (Helios 3D | HELP CENTER) |
What does combiner box Input Count define? | It defines the number of combiner box inputs. HELIOS 3D uses this value to calculate the number of combiner boxes needed. (Helios 3D | HELP CENTER) |
| Where is a combiner box inserted during placement? | Depending on the placement settings, the combiner box is inserted behind the last string assigned to it. (Helios 3D | HELP CENTER) |
What does combiner box Abs. Max. PV-Voltage (Udc max) define? | It defines the maximum PV voltage. If this value is set, it is checked when creating a new string definition. (Helios 3D | HELP CENTER) |
What does combiner box Max. Input Current per String define? | It defines the maximum input current per string, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does combiner box Max. PV-Current (Idc max) define? | It defines the maximum PV current, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does combiner box Max. Wire Cross Section define? | It defines the maximum wire cross-section, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does combiner box Current Type define? | It defines whether the combiner box is used on the AC or DC side, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
What does combiner box Temperature Min. / Max. define? | It defines the minimum and maximum ambient temperature, but the article marks this field as not used. (Helios 3D | HELP CENTER) |
| What should I check if the number of combiner boxes seems wrong? | Check the combiner box Input Count, because HELIOS 3D uses this value to calculate the number of combiner boxes needed. (Helios 3D | HELP CENTER) |
| What should I check if a string definition fails due to voltage limits? | Check the combiner box Abs. Max. PV-Voltage (Udc max), because this value is checked when creating a new string definition if it is set. (Helios 3D | HELP CENTER) |
| Why are cable records essential? | Cables are essential for electrical design, for calculating total cable lengths per article for material lists, and for calculating losses based on input power and cable length. (Helios 3D | HELP CENTER) |
| What are cable records used for? | Cable records are used for electrical design, material-list cable length totals, and cable loss calculations based on input power and cable length. (Helios 3D | HELP CENTER) |
| How are AC cable losses calculated? | For AC losses, HELIOS 3D uses the impedance value if it is available. (Helios 3D | HELP CENTER) |
| How are DC cable losses calculated? | In the DC part, HELIOS 3D uses resistance in Ω/km. If resistance is missing, it uses conductor material resistivity and cross-section instead. (Helios 3D | HELP CENTER) |
| What happens if impedance is missing for AC loss calculation? | If no impedance value is provided, HELIOS 3D uses resistance in Ω/km. If resistance is also missing, it uses conductor material resistivity and cross-section instead. (Helios 3D | HELP CENTER) |
| What happens if cable resistance is missing? | If resistance is missing, HELIOS 3D uses the conductor material, its resistivity value, and the conductor cross-section to calculate power losses. (Helios 3D | HELP CENTER) |
| Since which program version are Ω/km values available? | The article states that the values in Ω/km were added starting with program version 2024. (Helios 3D | HELP CENTER) |
What does cable Resistance (Ω/km) define? | It is used for calculating power losses due to cable length in the DC part or when no impedance value is available. (Helios 3D | HELP CENTER) |
What does cable Impedance (Ω/km) define? | It is used for calculating power losses due to cable length in the AC part. (Helios 3D | HELP CENTER) |
What does cable Conductor Material define? | It selects the conductor material from the choice lists. The material’s resistivity value is defined in the choice list. (Helios 3D | HELP CENTER) |
What does cable Resistivity show? | It shows the resistivity value defined for the selected conductor material in the choice lists. (Helios 3D | HELP CENTER) |
What does cable Conductor Cross Section Area define? | It defines the conductor cross-sectional area and is necessary for calculating power losses caused by cable lengths. (Helios 3D | HELP CENTER) |
| Which cable values are required? | The article marks conductor material, resistivity, and conductor cross-section area as required. Resistance and impedance are also important for more direct loss calculation depending on AC or DC use. (Helios 3D | HELP CENTER) |
| Where is conductor material defined? | Conductor material is selected from the choice lists, and the resistivity value of the material is defined there. (Helios 3D | HELP CENTER) |
| What should I check if cable lengths appear in material lists but losses are wrong? | Check whether electrical loss-related values are complete, especially impedance for AC, resistance for DC, or conductor material, resistivity, and conductor cross-section as fallback values. (Helios 3D | HELP CENTER) |
| What should I check if cable loss calculation uses the wrong fallback value? | Check whether impedance, resistance, conductor material, resistivity, and cross-section are entered. HELIOS 3D uses impedance for AC if available, resistance for DC or missing impedance, and conductor material plus cross-section if resistance is missing. (Helios 3D | HELP CENTER) |
| What should I check if conductor resistivity looks wrong? | Check the selected conductor material in the choice lists, because the resistivity value is defined there and displayed in the cable record. (Helios 3D | HELP CENTER) |
| Can a grid be created in Component Management? | No. The article states that grids can only be created in the Choice List module of the HELIOS 3D database application. (Helios 3D | HELP CENTER) |
| Why is a grid not treated like a transformer, inverter, combiner box, or cable? | A grid is not a physical device but an abstract record, so it is maintained in Choice Lists rather than as a component. (Helios 3D | HELP CENTER) |
| What should I check if no grid is available for electrical design? | Check the Choice List module of the HELIOS 3D database application, because grid records can only be created there. (Helios 3D | HELP CENTER) |
| What should I check before starting electrical design in HELIOS 3D? | Check that required records exist for grids, cables, transformers, inverters, and combiner boxes, and that all red-framed required values are completed. For accurate loss and yield assessment, also complete orange- and sky-blue-framed values where applicable. (Helios 3D | HELP CENTER) |
| What should I check if automatic electrical placement cannot place devices? | Check whether required device records exist, whether required fields such as input count or rated voltage are filled, and whether the relevant device type can be calculated from its count values. (Helios 3D | HELP CENTER) |
| What should I check if electrical quantities are wrong? | Check device Input Count values for transformers, inverters, and combiner boxes, because HELIOS 3D uses input count to determine device usability and quantities for several electrical components. (Helios 3D | HELP CENTER) |
| What should I check if yield assessment is less accurate than expected? | Check sky-blue-framed yield-relevant values and inverter values such as voltage limits, power limits, and European efficiency. The article states that some optional values contribute to more accurate yield assessment. (Helios 3D | HELP CENTER) |
| What should I check if future program updates add new electrical calculations? | Ensure electrical device records contain as much complete information as possible. The article recommends this to avoid updating all records later when future functionality starts using additional fields. (Helios 3D | HELP CENTER) |
| Does the article describe the full creation workflow for every electrical device? | No. The article states that the procedure for creating devices is the same as for other components in Component Management and focuses only on data specific to each electrical component type. (Helios 3D | HELP CENTER) |
| Does the article describe all Electric module placement settings? | No. It focuses on database entries needed by the Electric module. Placement settings are handled in related Electric module articles. (Helios 3D | HELP CENTER) |
| Does the article describe all cable routing behavior? | No. It explains cable database values and loss calculation inputs, but not the full cable routing workflow. (Helios 3D | HELP CENTER) |
| Does the article describe all SLD behavior? | No. It does not describe single-line diagram behavior. SLD details should be checked in the separate SLD documentation. |
| How does Needed Database Entries relate to Component Management? | Transformers, inverters, combiner boxes, and cables should preferably be created in Component Management, using the same general component creation procedure as other components. (Helios 3D | HELP CENTER) |
| How does Needed Database Entries relate to Choice Lists? | Grids must be created in Choice Lists, and conductor material for cables is also selected from choice lists where the resistivity value is defined. (Helios 3D | HELP CENTER) |
| How does Needed Database Entries relate to the Electric module? | The Electric module uses these database entries for device placement, device quantity calculation, string connection logic, cable length totals, cable loss calculation, and yield-related evaluation. (Helios 3D | HELP CENTER) |
| How does Needed Database Entries relate to cable losses? | Cable loss calculations depend on cable impedance, resistance, conductor material resistivity, conductor cross-section, cable length, and in some cases device power or voltage values. (Helios 3D | HELP CENTER) |
| How does Needed Database Entries relate to yield assessment? | Some device values, especially inverter voltage, power, and European efficiency values, are used for yield assessment or can improve yield assessment accuracy if entered. (Helios 3D | HELP CENTER) |
| What information is missing from the Needed Database Entries article for RAG use? | The article does not provide a complete step-by-step creation workflow for each component, detailed screenshots as text, full Electric placement behavior, SLD behavior, or detailed troubleshooting messages. These points should be checked in related Help Center topics before being added as visible documentation. (Helios 3D | HELP CENTER) |
| What is the main takeaway from the Needed Database Entries article? | Before using the Electric module, users should create and complete the required electrical database records: transformers, inverters, combiner boxes, cables, and grids. Required red-framed fields make devices usable, orange-framed cable values improve loss accuracy, and sky-blue values improve yield assessment accuracy. (Helios 3D | HELP CENTER) |
