User Manual

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 Buck: The utility voltage is beyond the regular voltage range. The UPS is decreasing the output voltage
closer to normal.
Note: The Boost and Buck function are only available on a UPS with AVR; only high-end units with AVR have
a Buck feature. The UPS uses the AVR function to improve the utility voltage and supplies the power to its
connected equipment within a narrow range.
 Overload: The present load exceeds the load threshold of the UPS. Remove some equipment from the UPS
to reduce the load.
 ECO Mode: On-line UPS enters Economy mode. The UPS will enter bypass mode according to thresholds for
input voltage. Once the utility voltage exceeds thresholds, the UPS will supply battery power to its loads.
Users can configure exclusive days and exclusive time to for UPS when to not enter ECO mode.
 Manual Bypass: The Online UPS enters Manual Bypass mode due the Manual option being enabled. The
UPS will be forced to provide utility power to its equipment.
 Insufficient Inverter Power: There is no enough capacity of the inverter’s power. UPS cannot back to line
mode from bypass mode.
 Redundancy Lost：The quantity of UPS modules has no enough power to be complete redundancy; UPS
has no complete fault-tolerant ability.
 EPO: The function of EPO (Emergency Power Off) has been activated; UPS output power was turned off.
 Voltage: The output voltage that the UPS is supplying to the connected equipment.
 Frequency: The output frequency that the UPS is supplying to the connected equipment.
 Load: The power draw of the connected equipment expressed as a percentage of the total load capacity. This is
displayed as watts on some UPS models.
 Current: The output current of the UPS which is supplying to connected equipment.
 Active Power: The capacity of the circuit for performing work in a particular time.
 Reactive Power: Reactive power is needed in an alternating-current transmission system to support the transfer
of real power over the network. In alternating current circuits, energy is stored temporarily in inductive and
capacitive elements, which can result in the periodic reversal of the direction of energy flow. The portion of power
flow remaining, after being averaged over a complete AC waveform, is the real power; that is, energy that can be
used to do work. On the other hand, the portion of power flow that is temporarily stored in the form of magnetic or
electric fields, due to inductive and capacitive network elements, and then returned to source, is known as reactive
power.
 Apparent Power: The product of the current and voltage of the circuit.
 Power Factor: The radio of the active power flowing to the load, to the apparent power in the circuit. In an electric
power systems, a load with a low power factor draws more current than a load with a high power factor for the
same amount of useful power transferred.
 NCL Outlet: Displays the present status of the NCL outlet.
 On: This outlet is turned on and supplying power to the connected equipment.
 Off: This outlet is turned off and is not supplying power to the connected equipment.
 Pending On: This outlet is going to turn on following an action such as a scheduled turn on.
 Pending Off: This outlet is going to turn off following an action such as a scheduled turn off.