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multiplus_faq [2019-06-11 07:03]
guy_stewart
multiplus_faq [2019-10-17 13:48]
guystewart [3.1 Derating of the power factor]
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 ===== 1.5 Loss of mains detection (LOM) ===== ===== 1.5 Loss of mains detection (LOM) =====
 +
 +Loss of mains detection will push and pull at voltage and frequency to see if there is still a generating source. This process can cause issues with some generators, or high impedance connections to generators. ​
 +
 +For large and stable Generators Type B LOM will work, and is safer.
 +However, if you are experiencing issues with voltage, frequency or power fluctuations,​ you may wish to try Disabling LOM.
 +
 +**Disabling LOM**
 +
 +Disabling the LOM on an input connected to the grid is only allowed when other external safety equipment is installed.
 +Disabling the LOM on an input connected to generator can be done, but then other methods / warning signs / physical lockout safety measures must be provided. Ensuring that any installer that will work on the generator, wiring or system, will make sure to also switch off or otherwise disconnect the Inverter/​charger system.
  
 For Full information on Loss of Mains detection, please see [[ve.bus:​grid-codes-and-loss-of-mains-detection|this more detailed explanation.]] For Full information on Loss of Mains detection, please see [[ve.bus:​grid-codes-and-loss-of-mains-detection|this more detailed explanation.]]
  
  
-===== Example configuration in VEConfigure ​=====+**Example configuration in VEConfigure**
  
   * A generator that requires LOM to be disabled.   * A generator that requires LOM to be disabled.
   * Generator on AC in 1, and grid on AC in 2, as recommended.   * Generator on AC in 1, and grid on AC in 2, as recommended.
  
-{{ :ve.bus:grid-code.png?direct |}} +{{::lom_generator.jpg?direct&400|}}
  
  
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 This leading or lagging power factor will have the effect of demanding more kVa from the generator for the same or less DC Watts delivered to the batteries. You may need to further reduce the DC Current Limit in the Charger tab of VEConfigure if the generator continues to overload after changing this setting. This leading or lagging power factor will have the effect of demanding more kVa from the generator for the same or less DC Watts delivered to the batteries. You may need to further reduce the DC Current Limit in the Charger tab of VEConfigure if the generator continues to overload after changing this setting.
 +
 +Effectively,​ the total charge current possible will be less that the rated maximum charge current output of the charger (under normal conditions) when weak AC is disabled.
  
  
multiplus_faq.txt · Last modified: 2019-12-01 23:50 by guy_stewart