Uninterruptible Power Supplies Online UPS 3K User Manual download pdf (Page 12)

2: Description

2-4 UPS724-01-00 PowerWave 1000 (1-3kVA) User Manual - Dated 26 June 2013

2.2.2 System operating modes

ON-LINE operation

Figure 2.2 ON-LINE operation

• The battery is being permanently charged by the battery charger.

• The AC/DC converter is processing the utility input supply and turning it into controlled DC.

• The Inverter is converting the AC/DC converter output back into AC suitable for the load.

• The static switch is connecting the inverter output to the UPS output terminals.

ON BATTERY operation

Figure 2.3 ON-BATTERY operation

• The battery is discharging through the DC/DC boost converter which presents the inverter with a

controlled input voltage as the battery discharges.

• The Inverter is converting the DC/DC boost converter output back into AC suitable for the load.

• The static switch is connecting the inverter output to the UPS output terminals.

• The load will continue to receive its regulated power until the battery discharges to its low voltage cut-

out level.

EMI

FILTER

EMI

FILTER

AC/DC (PFC)

CONVERTER

DC/AC

INVERTER

STATIC

SWITCH

BATTERY

CHARGER

DC/DC BOOST

CONVERTER

BATTERY

Input

Output

Bypass Line

Safety

Relay

Input

LINE UPS LOAD

LCD Mimic

EMI

FILTER

EMI

FILTER

AC/DC (PFC)

CONVERTER

DC/AC

INVERTER

STATIC

SWITCH

BATTERY

CHARGER

DC/DC BOOST

CONVERTER

BATTERY

Input

Output

Bypass Line

Safety

Relay

Input

LINE UPS LOAD

LCD Mimic

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Uninterruptible Power Supplies Online UPS 3K User Manual Page 12

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