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A Standby or Off-line UPS is a basic, inexpensive UPS that feeds power to the load directly from the utility and then transfers to battery power via an inverter after utility drops below a specified voltage. The delay between utility power loss and inverter startup can be long enough to disrupt the operation of some sensitive loads.
Power System Solutions offers the following Standby UPSs:
 Powerware 3105
350-700 VA
Standby UPS
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