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5.2. CONNECTION.
This equipment is suitable to be installed in mains with
•
power distribution system of TT, TN-S, TN-C or IT,
taking into account when installing the particularities of the
used system and the national electrical regulation of the desti-
nation country.
For any information regarding the connection terminals of the
•
equipment, check table 2.
5.2.1. Connection to mains, terminals (X1 to X4).
As this is an equipment with class I protection against
•
electrical shocks, it is essential to install the protection
earth conductor (connect earth (
terminal (X5), before supplying voltage to the input terminals.
Equipments without static Bypass line, in accordance with
•
the safety standard EN-IEC 62040-1, installation has to be
provided with a «Backfeed protection» system, as for example
a contactor, which will prevent the appearance of dangerous
voltage or energy in the UPS input mains during a mains fault.
The standard is applicable both if power supply is single phase
or three phase and for single units, and for each UPS of the
parallel system.
The «Recommended installation» information for each
•
input and output setting is available with the supplied
documentation, manual and/or CD/Pendrive. In that information
is shown the circuit diagram, as well as the protection size and
minimum cross section of the wires that are connected to the
equipment, taking into account the nominal operating voltage.
All figures are calculated for a maximum total cable length
of 30 m between the distribution panel board, equipment and
loads.
For longer lengths correct the cross sections accordingly,
ˆ
in order to avoid dropping voltages, by respecting the Reg-
ulations or norms corresponding to the country.
In the own documentation and for each setting, it is avail-
ˆ
able the information for «N» units in parallel, as well as the
features of the own «Backfeed protection».
There can be no derivation in the line that goes from
the «Backfeed protection» to the UPS, as the safety
standard would be infringed.
Warning labels should be placed on all primary power switches
•
installed in locations away from the equipment to alert the elec-
trical maintenance staff of the presence of a UPS in the circuit.
The label will bear the following or an equivalent text:
Before working on this circuit.
ˆ Isolate the Uninterruptible Power System (UPS).
ˆ Check the voltage between all terminals, in-
cluding the protective earth.
Risk of UPS backfeed voltage.
Connect the input cables to the respective terminals according
•
to the available equipment setting.
118
)). Connect this conductor to
For parallel systems, it will be necessary to repeat the connec-
tions that go from panel board to each equipment.
Connection to three phase mains:
Connect the power supply cables R-S-T-N to the input termi-
nals (X1), (X2), (X3) and (X4), respecting the phase ro-
tation and neutral indicated on the label of the equipment
and in this manual. If the phase rotation is not respected, the
equipment will not operate.
In case of discrepancies between the labelling and the instruc-
tions of this manual, the label will always prevail.
Connection to single phase mains:
Connect the power supply cables R-N to the input termi-
nals (X1) and (X4), respecting the order of phase and
neutral indicated on the label of the equipment and in
this manual. If the order of the phase and neutral is not re-
spected, the equipment will be damaged seriously.
In case of discrepancies between the labelling and the instruc-
tions of this manual, the label will always prevail.
5.2.2. Connection of separate static bypass line,
terminals (X14 a X17). CUBE3+ B version
only.
As this is an equipment with class I protection against
•
electrical shocks, it is essential to install the protection
earth conductor (connect earth (
terminal (X5), before supplying voltage to the input terminals.
Equipments with static Bypass line, in accordance with the
•
safety standard EN-IEC 62040-1, installation has to be pro-
vided with a «Backfeed protection» system, as for example
a contactor, which will prevent the appearance of dangerous
voltage or energy in the UPS input mains during a mains fault.
The standard is applicable both if power supply is single phase
or three phase and for single units, and for each UPS of the
parallel system.
The «Recommended installation» information for each
input and output setting is available with the supplied
documentation, manual and/or CD/Pendrive. In that information
is shown the circuit diagram, as well as the protection size and
minimum cross section of the wires that are connected to the
equipment, taking into account the nominal operating voltage.
All figures are calculated for a maximum total cable length
of 30 m between the distribution panel board, equipment and
loads.
For longer lengths correct the cross sections accordingly,
ˆ
in order to avoid dropping voltages, by respecting the Reg-
ulations or norms corresponding to the country.
In the own documentation and for each setting, it is avail-
ˆ
able the information for «N» units in parallel, as well as the
features of the own «Backfeed protection».
There can be no derivation in the line that goes from
•
the «Backfeed protection» to the UPS, as the safety
standard would be infringed.
Warning labels should be placed on all primary power switches
•
installed in places away from the equipment to alert the elec-
trical maintenance staff of the presence of a UPS in the circuit.
)). Connect this conductor to
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