Delta Ultron GES203HH33A035, Руководство пользователя, Страница: 47 / 70

43
Chapter 6 Installation and Wiring
WARNING:
1. When UPSs are paralleled, the length of each unit’s input cables/ output ca-
bles must be equal. This ensures that the parallel UPSs can equally share the
equipment loads in bypass mode.
2. Only UPSs with the same capacity, voltage and frequency can be paralleled;
otherwise, parallel functions will fail.
’ X‚+% "`€_
2 or 3) through LCD. Otherwise, UPSs can not be started. If the symbol '!' ap-
" #>"
UPS 1
UPS 2
UPS 4
I/P LOAD
AC Input
AC Input
AC Input
UPS Output
UPS Output
UPS Output
Parallel Port
Parallel Port
Parallel Port
Parallel Port
Pa
rallel C
able
3Ø4W 3Ø4W
Pa
rallel C
able
(Figure 6-19: Parallel Units Single Input Wiring Diagram)
y
Dual Input (Parallel Units)
When there are two AC power sources, parallel units’ wiring procedures are as follows.
1
Follow !"#$#% to modify the UPS into dual in-
put. Please note that only authorized Delta engineers or service personnel can modi-
fy single input/ dual input setup.
2
Please follow steps
1
~
5
stated in section Single Input (Single Unit) .
3
Connect the main AC source/ bypass AC source/ output/ external battery cabinet ca-
bles to the wiring terminal block and do not forget to ground the parallel UPSs (please
refer to
Figures 6-13~6-18/ 6-20 ).