Single Input; On-Line Mode_ Single Input_ Single Unit - Delta Ultron DPM Series User Manual

3. In this user manual, the meaning of Q1, Q2, Q3, Q4 and Q5 represents the following.
Code
Q1
Q2
Q3
Q4
Q5
4. Only UPSs with the same capacity, voltage, frequency and version can be paralleled. For
version information, please refer to 7.10.8 Version. Please only use the provided parallel
cable to parallel the UPS units; otherwise, parallel functions will fail. For more parallel
information, please refer to Pre Start-up Warnings for Parallel Units stated in Page 6-4.
3.1

Single Input

3.1.1 On-Line Mode_ Single Input_ Single Unit

In On-Line mode, the main AC source supplies AC power via the external maintenance
to DC power and supplies the DC power to the inverter. In the meantime, the rectifier
provides charging power to the batteries. After receiving the DC power, the inverter
converts it into clean and stable AC power to the connected critical loads via the external
maintenance bypass cabinet's Output Breaker (Q4). Please refer to Figure 3-3. During On-
Line mode, the UPS's tri-color LED illuminates green and the text 'AC' appears in the lower
right corner of the screen.
MAIN
External Maintenance Bypass Cabinet's Input Breaker.
External Maintenance Bypass Cabinet's Bypass Breaker.
External Maintenance Bypass Cabinet's Manual Bypass Breaker.
External Maintenance Bypass Cabinet's Output Breaker.
External Battery Cabinet's Breaker
Q1
Rectifier
Q5
Converter
(Figure 3-3: On-Line Mode Diagram_ Single Input Single Unit)
Meaning
(OFF)
Static Switch
(ON)
Inverter
Static Switch
Power Module 1
Power Module 2
Power Module...
3-3
3 Operation Modes
Q3
LOAD
Q4