29
The label shall bear the following text or an equivalent:
Before working on the circuit.
•
Isolate the Uninterruptible Power Supply
(UPS)
.
•
Check the voltage between all terminals, including the
protective earth.
Backfeed voltage risk of the UPS.
•
Connect the input cables to the respective terminals ac-
cording to the configuration of the available equipment,
considering the illustrations in Fig. 5 to 10 in terms of the
connection points of the cables.
Connection to a three-phase input network:
Connect the RSTN power cables to the input terminals,
respecting the rotation of the phases and the neu-
tral
indicated in the labeling of the equipment and in
this manual. If the phase rotation is not respected the
equipment will not work.
It is essential to connect the input neutral
Connection to a single-phase input network:
Connect the RN power cables to the input terminals,
respecting the rotation of the phases and the neutral
indicated in the labeling of the equipment and in this
manual. Failure to observe the phase and neutral rota-
tion will cause serious damage to the equipment.
Where there are discrepancies between the labeling and
the instructions in this manual, labeling shall always pre-
vail.
For systems in parallel, it will be necessary to repeat the
connections that go from the panel to each equipment.
•
Generally, the equipment is supplied ready for sup-
plying through a single terminal block (common
power for the rectifier and for the static bypass line).
However, when both functional blocks are fed through two
independent lines, it
will be mandatory to
remove the
bars or copper rods that connect the terminals of the re-
spective phases and
leave the connecting bar or plate
between the
two neutral terminals
.
•
The input neutral for the rectifier supply and the
input neutral for the bypass line supply must be the
same. In any case,
consider
that in the equipment both
will be united through the bar or plate that joins the two
terminals
.
•
Frequency conversion mode.
You can use the
equipment with the frequency converter configura-
tion, activating this function through the control panel
menus. For connection purposes, the order of connection of
the phase or phase and neutral cables shall be respected.
If the equipment operates as a frequency converter,
it
is mandatory to
remove the connection plates
between the UPS input terminals and the separate bypass
line and leave the bypass input connection unconnected.
5.5.2. Separate static bypass line connection. In version
B only.
•
As it is an equipment with protection against class I
electrical shock, it is essential to install the protec-
tive earth conductor to the terminal identified as
. Con-
nect this conductor before supplying voltage to the input
terminals.
•
In accordance with the safety standard EN-IEC 62040-1, in
equipment without a separate static Bypass line, the in-
stallation must be equipped with an automatic backfeed
protection system, such as a contactor, which prevents the
occurrence voltage or hazardous energy on the UPS input
line during a power failure or any other for the bypass line.
The standard is applicable regardless of whether the power
supply is single-phase or three-phase, and for individual
units, as well as for each of the UPS subracks of a parallel
system.
•
There can be no derivation of the line from the Back-
feed protection to the UPS, since the safety standard
will not be complied with.
•
Warning labels shall be affixed to all primary power
switches installed in areas remote from the equipment to
alert electrical maintenance personnel of the presence of a
UPS in the circuit.
The label shall bear the following text or an equivalent:
Before working on the circuit.
•
Isolate the uninterruptible power supply system
(UPS)
.
•
Check the voltage between all terminals, including the
protective earth.
Backfeed voltage risk of the UPS.
•
Connect the bypass input cables to the respective terminals
according to the configuration of the available equipment,
considering the illustrations in Fig. 5 to 10 in terms of the
connection points of the cables.
Connection to a three-phase bypass network:
Connect the R-S-T-N power supply cables to the bypass
terminals, respecting the rotation of the phases and the
neutral indicated in the labelling of the equipment and
in this manual. If the phase rotation is not respected the
equipment will not work.
It is essential to connect the input neutral.
Connection to a single-phase bypass network:
Connect the R-N power supply cables to the bypass ter-
minals, respecting the rotation of the phases and the
neutral indicated in the labelling of the equipment and
in this manual. Failure to observe the phase and neutral
rotation will cause serious damage to the equipment.
Where there are discrepancies between the labelling and
the instructions in this manual, labelling shall always pre-
vail.
For systems in parallel, it will be necessary to repeat the
connections that go from the panel to each equipment.
•
Frequency converter mode.
With the frequency
converter configuration activated, the cables of the
static bypass line must not be connected. With this opera-
tion mode, all the functionalities of the static bypass are
inhibited.
EMi3
SERVOMOTOR VOLTAGE STABILISER
USER'S MANUAL
