Leonics Ulta Series, User Manual

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2.2.2   

Op

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up mo

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2.2.1 Operating in the normal mode

Normally, UPS is working under line interactive mode in which the path of

current is as follows : When the current first flows into the UPS, it has to pass

through a surge protection circuit to filter surges and spikes which may occur

from a nearby lightning discharge or load switching by the local power

company.  Here, the high voltage power will go to the line grounding system

and let only the acceptable current pass to the EMI/RFI filter to eliminate EMI

and RFI.  Then it flows to the automatic voltage regulator (AVR) to regulate the

voltage level to approximately your country's standard nominal mains voltage

(see product specification, 100, 110, 120, 220, 230 or 240 Volts).  If the voltage is

too high or too low compared to the standard nominal voltage, it will be

adjusted to the safety level for your loads (please refer to the specifications).

After that the current will flow to two destinations.  The first part goes to the

EMI/RFI attenuation then to the Power Watcher and to your connected loads.

The Power Watcher provides information about load conditions, whether or

not you are overloading your ULTRA Series UPS. (Power Watcher is continuously

monitoring in real time both for the stabilizer and inverter modes.)  The

remaining power flows to the battery charger circuit to charge the batteries

and maintain them fully charged.

2.2.2 Operating under backup mode

The UPS will transfer to backup mode (inverter mode) when it detects

abnormal situations such as blackouts, brownouts, surges, sags or abnormal

frequency.  These situations may harm your loads and may be too risky for the

UPS to operate in the interactive mode.  When an abnormal power mode is

detected, the UPS will Immediately transfer to the backup mode with no loss of

power to the loads.  At this moment, the backup power will begin to be drawn

from battery.  The current from the battery will flow to the inverter (changing

direct current to alternating current).  Then, the power flows to the EMI/RFI

attenuation, Power Watcher and on to your loads.

You can also monitor the UPS from a PC by using Easy-Mon X Monitoring and

Management Software through a connection between the PC and the UPS

communication port.  For instance, you can set the UPS shutdown time and restart time,

this status will be displayed on your PC monitor.