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sential for systems of 3 or 4 units. The switches on the
board must allow a UPS to be isolated from the system
in the event of an anomaly and the loads to be supplied
via the remaining ones, either during the period of pre-
ventive maintenance or during the fault and its repair.
• On request, it is possible to supply an external manual by-
pass panel for a single unit or a parallel system.
You can also choose to have the installer provide and in-
stall this external panel, paying attention to the version
and configuration of the unit or system available and to the
documentation on the pen drive relating to the "Recom-
mended installation".
•
In the documentation supplied with this user
manual and/or on your pen drive, there is informa-
tion relating to the "Recommended installation" for each
input and output configuration. It shows the wiring dia-
grams, as well as the protection size and the minimum
cross-sections of the cables connected to the unit, ac-
cording to its nominal working voltage. All values are cal-
culated for total maximum cable length of 30 m between
the distribution board, unit and loads.
ˆ For longer lengths, correct the cross-sections to pre-
vent voltage drops, observing the regulations or stand-
ards of the country.
ˆ In the same documentation and for each configuration,
the information for "N" parallel units is available, as
well as the characteristics of the "Back-feed protec-
tion".
• In parallel systems, the length and cross-section of the ca-
bles that run from the protection board to each UPS and from
these to the board will be the same for all of them without
exception.
• The cross-section of the cables must always be considered
in relation to the size of the switch terminals, so that their
entire cross-section is correctly embraced for optimal con-
tact between the two elements.
• Only the nominal currents are printed on the unit's name plate,
as indicated in the EN-IEC 62040-1 safety standard. For the
input current calculation, the power factor and the unit's per-
formance have been considered.
• If peripheral input, output or bypass elements such as trans-
formers or autotransformers are added to the UPS or parallel
system, the currents indicated on the name plates of these
elements must be considered in order to use the appropriate
cross-sections, observing the local and/or national Low
Voltage Electrotechnical Regulations.
• When an isolation transformer is incorporated into a UPS or
parallel system, as standard, as an option or installed by you,
either at the input, bypass or output line or at all of them, pro-
tection devices against indirect contact (differential switch)
must be fitted at the output of each transformer, as due to its
isolation characteristics, it will prevent the tripping of the pro-
tection devices fitted in the primary of the disconnect switch
in the event of electric shock in the secondary (isolation trans-
former output).
• Please note that all factory-installed or factory-supplied isola-
tion transformers have the output neutral connected to earth
via a connection bridge between the neutral and earth termi-
100
nals. If the output neutral must be isolated, this bridge must
be removed, taking the precautions indicated in the respec-
tive local and/or national low voltage regulations.
• To pass the cables into the cabinet, there are cable glands
mounted on the metal structure or a single opening as a
bushing.
In case of installing the equipment in IT neutral regime, the
•
switches, circuit breakers and thermal-magnetic protection
devices must break the NEUTRAL, as well as the three phases.
5.1.6.5. Preliminary considerations before
connection, regarding the batteries and
their protection devices.
Inside the battery cabinet there are accessible parts with
•
DANGEROUS VOLTAGES
electric shock, which is why it is classified as a
ACCESS
AREA. Therefore the key for the external battery
cabinet (if present) will not be available to the
USER, unless they have been properly instructed.
• As a minimum, the batteries are protected by fuses and
their physical arrangement is conditioned by the tangible
location of the batteries themselves. The different groups
resulting from this are detailed below:
In models with "standard" autonomy, the batteries are
a.
supplied integrated in the same cabinet as the unit. Like-
wise, for each power output, the "0/" and "/" versions, in
their standard autonomy configuration, reserve the neces-
sary space for locating the batteries in the same cabinet
as the unit.
The extended autonomy models are a variant of group "a",
b.
which in turn are divided into two subgroups:
Batteries installed or intended to be installed partly
1.
in the UPS cabinet and the rest in another cabinet or
other cabinets or in a battery rack.
Batteries installed or intended to be installed en-
2.
tirely in another cabinet or other cabinets or in a
battery rack.
• As a result of the battery layout, the respective protection
will be arranged as follows:
ˆ Units from group "a" indicated in the previous point.
– The protection of internal batteries consists of
ternal fuses located in the UPS that are not acces-
sible to the user.
ˆ Units from group "b.1.".
– As mentioned in the previous point, the protection of
internal batteries consists of
the UPS that are not accessible to the
tection of external batteries lies in the battery cabinet
itself (F8), see Fig. 8 and Fig. 9.
ˆ Units from group "b.2.".
– The protection of external batteries consists of
fuses in the battery cabinet itself (F8), (see Fig. 8
and Fig. 9).
and consequently with a risk of
RESTRICTED
OPERATOR or
in-
internal fuses located in
user. The pro-
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