IV319 Rev.00
Data 2010-06-22
Pag. 26 di 118
5.4 Parallel operation
1. Brief introduction of the redundancy
N+X is currently the most reliable power supply structure. N
represents the minimum UPS number that the total load needs; X
represents the redundant UPS number, i.e. the fault UPS number
that the system can handle simultaneously. The bigger the X is,
the higher reliability of the power system is. For occasions where
reliability is highly depended on, N+X is the optimal mode.
As long as the UPS is equipped with parallel cables, up to 3
UPSs can be connected in parallel to realize output power
sharing and power redundancy.
2. Parallel installation
1) Users need to opt a standard 25-pin communication cable,
which should have 25 cores, corresponding stitches and
shield, as the UPS parallel cable. The length of the parallel
cable is appropriate to be less than 3 m.
2) Strictly follow the stand-alone wiring requirement to perform
the input wiring of each UPS.
The blue & brown or red wires for connection to the
positive terminal of the battery pack output
The black & white or black
wires for connection to the
negative terminal of the
battery box output
The green and yellow ribbon wire
for connection to the ground of
the battery cabinet
The receptacle for
connecting the UPS
Summary of Contents for Green Point 6 20KVA
Page 28: ...IV319 Rev 00 Data 2010 06 22 Pag 28 di 118 Wiring diagram of 6K 10K 1 1 parallel system...
Page 29: ...IV319 Rev 00 Data 2010 06 22 Pag 29 di 118 Wiring diagram of 10K 3 1 parallel system...
Page 57: ...IV319 Rev 00 Data 2010 06 22 Pag 57 di 118 DB 9 Interface of AS400 communication protocol...
Page 61: ...IV319 Rev 00 Data 2010 06 22 Pag 61 di 118 Back View of 15K 20K 3 1...
