41
OPERATIVE PROCEDURES
P
RELIMINARY
O
PERATIONS
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.
