Common Battery - Delta Modulon DPH Series User Manual

3.4 Common Battery (Only for Parallel UPSs Connecting to
the Same External Battery Cabinet(s))
NOTE:
You can parallel UPSs. Each parallel UPS can connect with at maximum four
external battery cabinets, and the parallel UPSs can share their connected external
battery cabinet(s). For UPS parallel information and application, please contact
Delta service personnel.
To save on your costs and installation space, the parallel UPSs can share their connected
external battery cabinet(s). For common battery application, please install an isolated
switch between each parallel UPS and its connected external battery cabinet(s). Please see
Figure 3-29 for two parallel UPSs sharing one external battery cabinet as an example.
If the parallel UPSs share the external battery cabinet(s), you should use the LCD to set up
relevant parameters such as 'Battery Type', 'Capacity', 'Battery Strings', 'Float Charge
Voltage', 'Equalized Charge Voltage', 'Charge Current (Max)', etc. For more information,
please refer to 7.10.4 Battery & Charging Setting.
NOTE:
For common battery application, please use the LCD to set each UPS's float
charge voltage (default: 190V) the same, each UPS's equalized charge voltage
(default: 196V) the same, and set each UPS's charge current even.
For example:
When (1) two UPSs are paralleled, (2) they share one external battery cabinet,
(3) the battery type is 200AH, (4) there are a total of 4 battery strings, and (5) the
charge current is 80A, please use the LCD to set each UPS's 'Battery Type' the
same, 'Capacity' as 200AH, 'Battery Strings' as 2, and 'Charge Current (Max)'
as 40A.
3-29
3 Operation Modes