Hi,
My office is set up that 2 computers and router are connected to a UPS (650VA, offline). The UPS is then connected to the AC wall socket.
I measured the total wattage of everything connected. It ranges between 200-250W.
As we had a power outage the other day, I did the following, and these were my results:
1) Connected a 500W cheapo inverter to 105Ah deep cycle battery. Then plugged the UPS into the inverter. There were sparks coming from the battery positive terminal, and then the inverter voltmeter went from 13V down to 0V.
2) Then connected a 720W Quantum inverter (larger, in plastic box with cooling fan). As soon as I connected the main plug, inverter made a slight pop, and fan went dead. Inverter will not power on at all now.
3) Then connected a 500W inverter (car style, without built-in charger) to the UPS. It powered on my setup without an issue for 5 minutes. I then turned off the inverter and turned it on again. There were sparks at the battery, and inverter made a long beeeeep.
I can no longer use any of these inverters, as they all do not work now.
I just want to know where I went wrong?
The only thing I can think of is the fact that I connected all of these to a UPS.
Could it be that either the UPS:
1) Needs power from pure sincewave inverter only?
2) Possibly has a large amount of surge wattage which could have blown the inverters? (Also find this hard to believe as it is a 650VA ups (360W), so shouldn't be able to surge that high, even when in charging mode).
Alternatively, is there something else I could have done wrong? I just want to make sure I do it correctly next time so that I don't blow anything again (costing $$...)
Thanks in advance for the help!
My office is set up that 2 computers and router are connected to a UPS (650VA, offline). The UPS is then connected to the AC wall socket.
I measured the total wattage of everything connected. It ranges between 200-250W.
As we had a power outage the other day, I did the following, and these were my results:
1) Connected a 500W cheapo inverter to 105Ah deep cycle battery. Then plugged the UPS into the inverter. There were sparks coming from the battery positive terminal, and then the inverter voltmeter went from 13V down to 0V.
2) Then connected a 720W Quantum inverter (larger, in plastic box with cooling fan). As soon as I connected the main plug, inverter made a slight pop, and fan went dead. Inverter will not power on at all now.
3) Then connected a 500W inverter (car style, without built-in charger) to the UPS. It powered on my setup without an issue for 5 minutes. I then turned off the inverter and turned it on again. There were sparks at the battery, and inverter made a long beeeeep.
I can no longer use any of these inverters, as they all do not work now.
I just want to know where I went wrong?
The only thing I can think of is the fact that I connected all of these to a UPS.
Could it be that either the UPS:
1) Needs power from pure sincewave inverter only?
2) Possibly has a large amount of surge wattage which could have blown the inverters? (Also find this hard to believe as it is a 650VA ups (360W), so shouldn't be able to surge that high, even when in charging mode).
Alternatively, is there something else I could have done wrong? I just want to make sure I do it correctly next time so that I don't blow anything again (costing $$...)
Thanks in advance for the help!