UPS theory of operation (continued)

Operation with battery

Mains 1 power up:

the inverter receives power from the rectifier-charger and supplies power to the load. There is no direct connection between Mains 1 and the load.

Mains 1 power down:

the inverter runs on battery power and supplies power to the load;

the battery discharges.

Maintenance position

(disconnected):

no power to the load (except in parallel connected systems, where other units supply power).

rectifier-

chargerinverter

Mains 1

load

battery

rectifier-

chargerinverter

Mains 1

load

battery

rectifier-

inverter

charger

Q1

Q5N

Mains 1

load

 

QF1

battery

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Image 20
APC 6000 user manual Operation with battery