Appendix 1 Operation Guide For Ups Parallel Power Distribution - Liebert UHA1R-0100 User Manual

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Appendix 1 Operation Guide For UPS Parallel Power Distribution

Appendix 1 Operation Guide For UPS Parallel
Taking 1 + 1 parallel for example, the schematic diagram of the power distribution is shown in Figure 1.
PE
BYPASS
Power Distribution
Cabinet
1# UPS
AC input AC output
N U V W PE PE
U
V Parallel POD
W
N
N U V W PE PE
AC input AC output
2# UPS
Note: To ensure that only one point of the whole system is earthed, the mains PE
has been connected with the BAT_PE through the cables in the UPS; The cable BAT_PE
must be reliably connected to the metal enclosure of the battery cabinet, and the wiring of
the BAT + and the BAT - should be laid side by side and be the same direction.
Figure 1
Liebert
®
BAT +
MCB 1
BAT -
BAT_PE
L N
L
N
P
E
L N
BAT +
MCB 2
BAT -
BAT_PE
Schematic diagram of power distribution
ITA 10kVA UPS User Manual
1#UPS Battery cabinet string
BAT +
BAT ＋
Battery
BAT - cabinet 1
BAT －
Battery
BAT +
cabinet 2
BAT -
2#UPS Battery cabinet string
BAT+
Battery
BAT +
BAT-
cabinet 1
BAT -
Battery
BAT +
cabinet 2
BAT -