5-2
Operating and Maintenance Manual
Installation
code 504275001 Rev. September 2010
Attention: the type and cross section of the connecting cables must be chosen according to their
operating current and laying must be as established by existing laws; this is the responsibility
of the installer. The UPS input current and output power are given in paragraph 2.4 and the
battery current in Table 7.
5.2.1 Safety recommendations
WARNING
Before starting please read and apply the following with attention. It is strictly forbidden to pro-
ceed with installation if one or more of the following conditions have not been checked.
1. Do not proceed with installation if there is water or moisture.
2. Remember that opening or removing the panels from the UPS you risk exposure to high and
dangerous voltages.
3. Check there is no mains voltage on the equipment.
4. Check that the loads are off and disconnected from the UPS;
5. Check that the UPS is off and not live.
All the electrical connection operations are done working on the distribution box. The fuse carri-
ers, output switch and manual bypass switch are on the outside of the box while inside you will
find the terminal block on which to do the connections. Electrical connection has to be carried
out by means of the terminals of the front disconnectors and of the battery disconnector fuse
holder/bars of the UPS.
5.2.2 Preliminary operations
Before connecting the UPS make sure that:
1 mains voltage (volt V in input) and frequency correspond to the values on the UPS rating
plate;
2 earthing complies with the IEC standards (International Electronic Commission) or local
regulations;
3 the electrical system is equipped with all the necessary differential protections and thermal
circuit breakers upstream from the UPS input.
5.2.3 Connecting the loads
Before actually starting to connect the loads make sure the rated power of the UPS (OUTPUT
POWER) indicated on its rating plate is equivalent to or greater than the total sum of the load
powers. The type and cross section of the connecting cables must be chosen according to their
operating current and laying must be as established by existing laws.
INDICATION
In the TABLES chapter, Table 5 gives an example of the cable cross section to use in output as far
as concerns using unipolar cables, without sheath, in PVC and laid in a pipe above ground.
The characteristics of the output cables must conform to the sections of the cables indicated
in table 5 of the TABLES chapter.
A separate switchboard must be supplied for the load. It is a good idea to use isolating switches
or thermal circuit breakers conforming to the IEC standards to protect the lines leading from
the electrical panel.
Use adhesive labels or some similar way to indicate the following values on the system’s general
panel:
- maximum rated power of the total load;
- maximum rated power of the load at power intakes.
- if an ordinary switchboard is used (outlets for mains voltage and for the UPS), make certain
that there is an indication of the voltage applied on each outlet (‘Mains’ or ‘UPS’) of the related
power source.
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