ZGR VERSATILE RT - 10 KVA
Manual de operaciones
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4.5.2
Parallel cable installation
All UPS modules must be interconnected by provided shielded wires in a ring configuration as shown below (Fig.
4-9). The parallel control board is built on each UPS module. The ring configuration ensures high reliability of the
control.
Fig. 4-9 Parallel cable installation
4.5.3
Initial startup procedure for parallel system
Follow next steps to first startup procedure:
1) Be sure all breakers are in OFF position
2) Close AC output breaker
3) Close battery cabinet breakers to energize UPS control board
4) Finally, close AC input breaker and wait until end of initializing process (1min)
If any alarm is shown, take note and contalt ZIGOR Service Support.
WARNING
Due to this UPS system is based on 3phase input and 1phase output , in case of failure and bypass transfer,
total load energy will go through phase 1 (A), so the wiring and protections must be sized properly.
WARNING
Check again that all input and output wires follow the same phase sequence on all parallel UPS.
A.B.C.N.PE / Lo.No.PE