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ve.bus:grid-codes-and-loss-of-mains-detection

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ve.bus:grid-codes-and-loss-of-mains-detection [2022-10-31 15:50] mvaderve.bus:grid-codes-and-loss-of-mains-detection [2022-10-31 23:41] (current) – [2.8 Grid codes and Type A and Type B LOM] mvader
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 To detect a loss of mains, the inverter/charger will constantly try to shift the AC frequency. When connected to a stable grid, with a normal accepted impedance, it will not be possible to do so, and it can therefore detect that the mains is still present. In case the mains was lost, the inverter/charger will be able to shift the frequency at will, without any resulting correction currents. To detect a loss of mains, the inverter/charger will constantly try to shift the AC frequency. When connected to a stable grid, with a normal accepted impedance, it will not be possible to do so, and it can therefore detect that the mains is still present. In case the mains was lost, the inverter/charger will be able to shift the frequency at will, without any resulting correction currents.
  
-When connected to a generator, or to a grid with a long extension cable or long ‘last mile’ cable, the impedance of the grid becomes much higher and the pushing and pulling on the grid will have a certain affect on its voltage. As a result the inverter/charger algorithm can become unstable and switch itself off in overload.+When connected to a generator, or to a grid with a long extension cable or long ‘last mile’ cable, the impedance of the grid becomes much higher and the pushing and pulling on the grid will have a certain affect on the grid voltage. As a result the inverter/charger algorithm can become unstable, which, in rare cases, can result in high currents and the unit switching itself off in overload.
  
 ==== 2.4 How does LOM detection relate to passthru? ==== ==== 2.4 How does LOM detection relate to passthru? ====
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   * Grid codes using Type A: VEConfigure lets you override that to Type B and/or disabling LOM.   * Grid codes using Type A: VEConfigure lets you override that to Type B and/or disabling LOM.
   * Grid codes using Type B: VEConfigure lets the installer override it to disabling LOM only.   * Grid codes using Type B: VEConfigure lets the installer override it to disabling LOM only.
 +  * Grid codes using "disabled": VEConfigure lets the installer override it to Type B only.
  
 {{ :ve.bus:grid_code_compliant.png?direct |}} {{ :ve.bus:grid_code_compliant.png?direct |}}
ve.bus/grid-codes-and-loss-of-mains-detection.txt · Last modified: 2022-10-31 23:41 by mvader

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