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multiplus_faq [2019-01-22 10:16]
127.0.0.1 external edit
multiplus_faq [2019-02-20 13:34] (current)
guy_stewart [1.3 Minimum voltage levels]
Line 82: Line 82:
 **AC low disconnect:​** low limit: below this value, the MultiPlus will disconnect (default = 180Vac). **AC low disconnect:​** low limit: below this value, the MultiPlus will disconnect (default = 180Vac).
  
-On generators where the output voltage drops under load, setting this value to a higher value can help solve shutdowns on overload.+On generators where the output voltage drops under load, setting this value to a higher value can help resolve inverter ​overload ​shutdowns.
  
-**AC Low connect:** minimum value: at this value or any higher value, ​the MultiPlus ​will reconnect after having disconnected (default = 187Vac).+The reason ​this happens is that the Multi will synchronise and follow the generator voltage as it sags.
  
 +If the generator is disconnected under load (either due to low-voltage disconnection,​ stalling, lack of fuel, etc) then when the Multi switches back to inverter mode; it must immediately supply all the power required by the loads at that same low voltage (and subsequent higher current).
 +
 +As overload is driven by current, not power, this can result in an overload.
 +
 +By increasing this minimum voltage level, you tell the inverter/​charger switch to inverter mode sooner, at higher voltage and thus lower AC current, and potentially prevent the overload from occurring.
 +
 +**AC Low connect:** minimum value: at this value or any higher value, the MultiPlus will reconnect after having disconnected (default = 187Vac).
 ===== 1.4 Maximum voltage levels ===== ===== 1.4 Maximum voltage levels =====
  
multiplus_faq.txt · Last modified: 2019-02-20 13:34 by guy_stewart