4. Overview

The SANUPS E11A is a stationary-type uninterruptible power supply designed to provide high-quality, stable AC power to critical equipment that requires continuous, uninterrupted power.

The UPS is comprised of rectifier, charger, inverter, battery, and utility power transfer (bypass) circuits. In the event of failure of the AC utility power source, AC output to the load is sustained by the inverter converting DC power from the batteries. When the utility power recovers, inverter operation continues while the batteries are recharged. The UPS is therefore able to supply completely uninterrupted AC power to connected loads without even momentary power loss.

AC Input

M AIN

Bypass Fuse

Bypass Circuit

 

SW

Filter

 

Filter

 

 

 

 

 

 

Fuse

Rectifier

Inverter

 

 

 

Charger

DC/DC

 

 

 

Converter

 

 

 

 

 

 

 

 

Control Circuit

 

 

 

 

Fuse

Batteries

LANI/F (option)

AC Output

CARD I/F

PC I/F

＜External

Batteries

UPS Block Diagram

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