August 30, 20205 yr TL;DR: the power factor is indeed extremely low and my unit consumes very close to 50W at standby (not 35W as stated in the datasheet) I recently bought a RCT Axpert VM III-3000-24. Upon my initial power measurements I was very concerned about the standby power usage as my clamp current meter was measuring between 1.2A and 1.3A. Upon reading this thread I decided to invest in two Kill-A-Watt units to measure the true power usage. I currently have no solar and am running this simply as a backup UPS. After running one on the AC input and one on the inverter output I can now share my results. Total test run time: 7d 10h Total power in: 34.7kWh Total power out: 25.2kWh Ave load: 140W Max load: 700W Min load: 30W Inverter standby power: < 50W (AC in and battery, doesn't seem to make much difference) Inverter power factor with no load: 0.17 Attached are images of the power factor and standby power usage over one hour.
January 19, 20215 yr Hi guys! I have an Axpert VMIII 5Kw. No solar, just batteries - used as a backup UPS for the house. Do you know why it shuts down on overload while in the bypass mode? Why would it care? Is there a way to stop it from rebooting on overload while in bypass? Before this model I had a 5Kw MKS and it continued to work overloaded in bypass with no issues.
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