External Battery Cabinet Connection Precautions - Delta Ultron HPH Series User Manual

6.6

external Battery Cabinet Connection Precautions

WARNING:
You can connect loads to the UPS only after the batteries are fully charged. This
guarantees that the UPS can provide sufficient backup power to the loads connect-
ed when a power failure occurs.
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.
3. Before start-up of parallel units, qualified service personnel should set ID (0, 1,
2 or 3) through LCD. Otherwise, UPSs can not be started. If the symbol '!' ap-
pears after an ID number, it indicates there is a conflict between ID numbers.
3Ø4W
Main
Source
Second
3Ø4W
Source
(for Bypass)
(Figure 6-16: Parallel Units Dual Input Wiring Diagram)
AC Input
UPS Output
Bypass Input
Parallel Port
UPS 1
AC Input
UPS Output
Bypass Input
Parallel Port
Parallel Port
UPS 2
AC Input UPS Output
Bypass Input
Parallel Port
UPS 4
37
Chapter 6 Installation and Wiring
3Ø4W
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