Ups Working Principle; Ups System Block Diagram - INFOSEC UPS SYSTEM E6 LCD 1000 RT Manuel Utilisateur

UPS Working Principle

5.
5.1.

UPS System Block Diagram

(fig 5.1)
Figure 5.1 above illustrates the True On-Line Double Conversion architecture of the UPS
system. The major modules consist of：
1. An AC to DC power converter (Rectifier) with PFC control circuit
2. A DC to AC power high frequency inverter
3. An Intelligent Battery Charger
4. A bank of stationary maintenance-free batteries
5. A DC to DC push/pull converter control circuit
6. A Static Bypass Loop
7. Input & Output EMI Filter
Summery guide to the UPS operating modes against the Utility AC Power Source
conditions
Utility Conditions
Utility Normal
Utility Abnormal
(under or over
voltage) / Absent
Utility
Abnormal/Absent,
Battery low voltage
INFOSEC UPS SYSTEM – 4 rue de la Rigotière – 44700 Orvault – France – www.infosec-ups.com
Hot Line Tel : +33 (0)2 40 76 15 82 – fax : +33(0)2 40 94 29 51 – hotline@infosec.fr – 06 11 AA 68 203 03
UPS Operating Modes
Rectifier convert AC to DC, battery charging,
Inverter convert DC to AC and supply to loads
with clean & stable power.
Rectifier and charger stop operating，Battery
discharge via DC~DC boost circuit and supply
to Inverter. Loads continue to receive supply
from Inverter. Alarm buzzer beeps, UPS now
on battery mode.
Rectifier and charger stop operating，Battery
discharge via DC~DC boost circuit and supply
to Inverter. Alarm buzzer beeps with quick &
short succession, indicating battery power low
and Inverter may stop supply soon.
LEDs Display
indications
, , LEDs
remain
illuminated
LED off,
LED illuminated
LED off, &
LED
illuminated.
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