ve.bus:manual_parallel_and_three_phase_systems
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ve.bus:manual_parallel_and_three_phase_systems [2024-02-09 13:07] – Removed “Weak LOM” setting. since that is currently the default jpasop | ve.bus:manual_parallel_and_three_phase_systems [2025-05-21 10:50] (current) – mvader | ||
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* Specify with your [[https:// | * Specify with your [[https:// | ||
* The same number of units need to be installed on each phase. An example to clarify: 3 units on L1, 3 on L2, and 3 on L3 is OK. But 2 on L1, 3 on L2 and 3 on L3 is not OK. The only way such non-symmetrical installation is supported is when using no monitoring at all, or a Digital Multi Control. Combining such system with any other monitoring device, such as the VE.Bus Smart Dongle or a GX device like the Cerbo is not supported. Numbers and information shown on the GX device as well as VRM portal will or can be wrong, and controlling the system, for example setting input current limits will not always work properly either. | * The same number of units need to be installed on each phase. An example to clarify: 3 units on L1, 3 on L2, and 3 on L3 is OK. But 2 on L1, 3 on L2 and 3 on L3 is not OK. The only way such non-symmetrical installation is supported is when using no monitoring at all, or a Digital Multi Control. Combining such system with any other monitoring device, such as the VE.Bus Smart Dongle or a GX device like the Cerbo is not supported. Numbers and information shown on the GX device as well as VRM portal will or can be wrong, and controlling the system, for example setting input current limits will not always work properly either. | ||
+ | * MultiPlus-II 8k, 10k, and 15k models can only be connected in parallel if an external AC transfer switch is used. For more information see the [[https:// | ||
* While VE.Bus System Configurator allows setting up a system using Multis (each having a single AC input), that is configured to have multiple separate AC inputs, such system is not supported by GX devices. | * While VE.Bus System Configurator allows setting up a system using Multis (each having a single AC input), that is configured to have multiple separate AC inputs, such system is not supported by GX devices. | ||
* This information does __not__ apply to the Multi RS and Inverter RS models, which use a VE.Can interface (not VE.Bus) see the RS product manuals for specific information on programming them for three phase. | * This information does __not__ apply to the Multi RS and Inverter RS models, which use a VE.Can interface (not VE.Bus) see the RS product manuals for specific information on programming them for three phase. | ||
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For units in parallel: Both the DC and AC wiring needs to be symmetrical per phase: use the same length, type and cross-section to every unit in the phase. To make this easy, use a bus-bar or power-post before and after the inverter/ | For units in parallel: Both the DC and AC wiring needs to be symmetrical per phase: use the same length, type and cross-section to every unit in the phase. To make this easy, use a bus-bar or power-post before and after the inverter/ | ||
- | With regards to AC fusing, each unit needs to be fused individually. Make sure to use the same type of fuse on each unit due to same resistance. Consider using mechanically connected fuses. | + | With regards to AC fusing, each unit needs to be fused individually. Make sure to use the same type of fuse on each unit due to same resistance. Consider using mechanically connected fuses, so that if one trips, they all trip - leading to a clear fault. |
With regards to DC fusing, each unit needs to be fused individually. Make sure to use the same type of fuse on each unit due to same resistance. | With regards to DC fusing, each unit needs to be fused individually. Make sure to use the same type of fuse on each unit due to same resistance. | ||
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* PowerAssist settings | * PowerAssist settings | ||
* Accept wide input frequency range on/off | * Accept wide input frequency range on/off | ||
+ | * Weak AC input on/off | ||
The following settings need to made in each unit in the system: | The following settings need to made in each unit in the system: | ||
* Country / grid code standard and other grid related values (AC high/ low values) | * Country / grid code standard and other grid related values (AC high/ low values) | ||
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* {{: | * {{: | ||
* {{: | * {{: | ||
+ | * {{ : | ||
* [[https:// | * [[https:// | ||
* [[https:// | * [[https:// |
ve.bus/manual_parallel_and_three_phase_systems.1707480467.txt.gz · Last modified: by jpasop