FaradayFF
Senior Member
- Location
- California
Hi,
Is there an inrush current on a standard UPS when it's first connected to power? Say we have a 5kVA, 3 PH., 208 V unit, will it draw 14 A per phase until the battery is charged, or is there an inrush and then the Amps settle to the steady state value until the internal battery is charged? I'm concerned that when the UPS is energized, it will draw too much energy in addition to supplying downstream panelboard causing the OCP device to trip.
Any thoughts would be appreciated.
Thanks,
FF
Is there an inrush current on a standard UPS when it's first connected to power? Say we have a 5kVA, 3 PH., 208 V unit, will it draw 14 A per phase until the battery is charged, or is there an inrush and then the Amps settle to the steady state value until the internal battery is charged? I'm concerned that when the UPS is energized, it will draw too much energy in addition to supplying downstream panelboard causing the OCP device to trip.
Any thoughts would be appreciated.
Thanks,
FF