Delta Modulon DPH 200kVA, User Manual, Page: 56 / 232

3-30
Modulon DPH Series
3.2.12 ECO Mode_ Dual Input_ Parallel Units
To activate ECO mode, please refer to
6.2.5 ECO Mode Start-up Procedures
,
7.6 Main
Screen
and
7.10.2 Mode Setting
.
In ECO mode (parallel), when each UPS’s bypass input voltage and frequency are within the
range of rating voltage ±10% and rating frequency ±3Hz, each UPS works in bypass mode;
otherwise, each UPS runs in online mode. During ECO mode, each UPS’s tri-color LED
illuminates green and each UPS’s LCD shows the text
‘ECO’ in the upper right corner. Please
see
Figure 3-29
for the path of electrical power through the parallel UPSs in ECO mode.
MAIN
LOAD
BYPA.
MAIN
BYPA.
1
2
Q0 Q2
Q0 Q2
Q1 Q4
Q3
UPS
Q1 Q4
Q3
UPS
Q5
Q5
Delta or non-Delta External Maintenance Bypass Cabinet
Batteries
Delta or non-Delta External Maintenance Bypass Cabinet
Batteries
Rectifier Inverter
Static Switch
Rectifier Inverter
Static Switch
(Figure 3-29: ECO Mode Diagram_ Dual Input Parallel Units)