Sanyo SANUPS E11A102A User Manual download pdf (Page 38)

−

15. Functional Description

15.1 Basic Operation

(1) Normal Operation

In normal operation, the UPS switches automatically

between the three modes (a) to (c)

depending on the state of the power.

The UPS does not switch automatically when item

①

“UPS operation mode” in

10.1

“Setup Menu Item List” is set to “Double Conversion” or “Economy”.

(a) Active Filter mode

The UPS operates in Active Filter mode when the input power voltage is within a

certain range and the output power factor is below a certain value. In Active Filter

mode, the UPS receives power from the utility power source and supplies it to the load.

At the same time, it compensates for high frequencies in the input power at the

inverter. The batteries are kept continually charged and ready in case a problem

(outage or voltage drop) occurs in the utility supply.

Power supply route in

Active Filter

mode

Indications by LEDs

(b) Double Conversion mode

The UPS switches to Double Conversion mode when the input power voltage is outside

a certain range. In Double Conversion mode, the UPS converts AC power from the

utility power source into DC power through the rectifier, and reconverts this DC power

back into AC power through the inverter and supplies it to the load. The output power

is stable AC power synchronized with the input power source. The batteries are kept

continually charged and ready in case a problem (outage or voltage drop) occurs in the

utility supply

Power supply route in Double Conversion mode Indications by LEDs

Utility

power

Output

Converter

Rectifier

Inverter

Charger

Batteries

Utility

power

Output

Converter

Rectifier Inverter

Charger

Batteries

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Comments to this Manuals

No comments

Sanyo SANUPS E11A102A User Manual Page 38

Comments to this Manuals