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OPERATIVE PROCEDURES
Preliminary Operations
Before powering the UPS and starting the operative procedures, in order to avoid any system damage, follow the
operations below.
Visual check of the connection
Check that all the isolators are open.
Check that all the connections have been made strictly following the indications given in the “Installation
manual”.
Before connecting the load
to the UPS and starting the operative procedures, in order to avoid any system
damage, and to check that there is no errors within the installation downstream of the UPS, follow the below
steps:
Close SWMB
.
Close the protective devices upstream to the UPS.
Verify there isn’t an output short circuit in the wiring system. Open the protective devices upstream to
the UPS.
Open SWMB
.
Close the protective devices upstream to the UPS
.
Before any attempt to turn the system on, it is mandatory to check the power supply and
connection of phase, neutral and external battery wires.
Refer to the Installation manual.
WARNING: The battery fuse holders only disconnect the internal battery. In order to isolate the
UPS from all of the DC sources, also disconnect all external battery cabinets, if present.
NOTE:
When the fuses are closed, a small arc flash may occur due to the charge of the capacitors present inside
the UPS. This is normal and does not cause faults and/or damage.
