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--- multiplus_faq [2019-01-22 10:16] – external edit 127.0.0.1
+++ multiplus_faq [2019-02-20 13:34] – [1.3 Minimum voltage levels] guy_stewart
@@ Line 82: / Line 82: @@
 **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 =====