Hi --
I am monitoring via the SNMP driver an APC SmartUPS that has split phase
(2L + neutral) 240V input and 120/120 volt outputs. The data for the
voltages is not what I'm expecting, and I am wondering how I should
interpret it. Here is an example from upsc:
input.L1-L2.voltage: 121
input.L2-L3.voltage: 120
input.voltage: 121.20
output.current: 5.90
output.L1-L2.voltage: 119
output.L1.current: 5.90
output.L2-L3.voltage: 119
output.L2.current: 1
The "input.voltage" value doesn't reflect the 240 volts that is actually
being applied. To get that, would I combine the L1-L2 and L2-L3 voltages?
Note that the "output.current" value matches the L1 output current,
ignoring the L2 current. Perhaps that is a clue that the overall
"input" and "output" values are not meaningful in this case?
How should I interpret these values to know the actual input and output
voltages and currents?
Thanks!
John
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