4
• All elec
trical cables for power supply have to be fixed to the
equipment and loads, interfaces, etc..., or to immovable parts
for fear of being stepped on them or becoming a medium or
exposing to fortuitous pulls.
• Be careful not to wet the device because it is not waterproofed.
Do not allow any kind of liquids to leak to; if it happens, shut it
down immediately and contact with the
(S.T.S.)
.
• If it accidentally contacts with liquids or high density of saline
air, dry it with a soft and absorbent cloth quickly.
Check if any liquid leak to the unit and act accordingly.
• To clean the equipment, wipe it with a slightly damp cloth and
then dry it. Avoid liquids sprinkling or spillage that could enter
through the slots or cooling grids, which may cause fire or
electric shock.
Do not clean the equipment with detergent products that
contain alcohol, benzene, solvent or other inflammable
substances, and needless to say they contain abrasive,
corrosive liquids.
• Never manipulate the equipment with wet hands.
• If it is observed that the UPS exhausts smoke or toxic gas, shut it
down immediately and disconnect it from power supply. This
incident may cause fire or electrical discharge. Contact with our
(S.T.S.)
.
• Do not put either materials or parts over the equipment that
might obstruct the synoptic visualization of the product.
•
Before using the UPS for first time or after a long period
of time (6 months maximum), it has to be connected to
the power supply to charge the batteries for at least 12
hours.
Although the equipment can operate with batteries discharged,
you should keep in mind the possible risk of mains fault during
the first operating hours. Thus, the available back up time of
the UPS batteries should be lower than the expected.
2.2.2.
General safety warnings.
•
All electrical cables connections and disconnections of the
equipment, including the controlled ones, should be done
without power supply and with switches on «O» or «Off»
position.
•
Pay special attention to the labelling of the equipment
that warns the «Electrical shock hazard». It indicate
there are dangerous voltages inside the equipment.
Do not open, dismantle or adjust the equipment when the
operating action is not stated in this document. To manipulate
equipment for repairing is restricted to
qualified
staff only. In
case of maintenance or fault, consult to the closest
(S.T.S.)
.
A part from the implicit risk of electrical shock, any action
which is not stated in this document alters the internal or
external of the equipment or just only the simple intervention
inside
can expire the warranty
.
• Some action requires to open the front door or to remove the
protection cover from the terminals, i.e. erection or
commissioning operation.
Once the respective actions are completed, recover the
equipment to it was, with the protection cover put back and front
door closed.
• To shut down the equipment completely, follow the instructio
ns
in the start-up and shutdown chapter.
Consult the documentation before doing any action.
A
wrong manipulation over the switches can cause
important production losses and/or failures in the
equipment.
•
Protection Earth cable of the UPS drives the leakage current
of the lo
ad devices. An isolated earth cable has to be
installed as part of the circuit that supplies the equipment.
Cross cable section and its features will be the same as the
power supply cables, but with green strip and with or
without yellow strip.
•
The protection earth must be connected to the frame or
metallic chassis of any electrical equipment, by means
of the foreseen terminal (in our case to the UPS, battery
cabinet when it is available and loads), assuring that it is
done before turning on the input voltage.
It is essential that cables feeding the loads have their respective
protection earth cable.
When circuits branches, i.e. by means of terminal strips, it is
essential to have a protection earth terminal in each one of
them.
• Check the quality and availability of the earth to see if it’s between
the defined parameters defined by t
he local or national regulations.
•
During the normal UPS operation, the input power supply
cable can’t be disconnected because the earth cable of
general protection in the UPS and all loads connecting at
the output will be disconnected, either.
Due to the same reason, the earth cable of general protection
in the building or switchgear panel that supplies the UPS will not
be disconnected.
• Cross cable sections used to supply the equipment and loads to be fed,
will be followed according to the nominal current stated in the
nameplate label of the equipment, and respect the Low Voltage
Electrotechnical Regulations or standards of the count
ry.
•
UPS
equipment can be manufactured in four different
configurations of Input-Output:
Three phase - Three phase.
Three phase - Single phase.
Single phase - Three phase.
Single phase - Single phase.
To correctly operate the UPS, it is necessary to use input
Neutral cable or an isolation transformer between the power supply
and the equipment.
• The UPS doesn’t modify the input neutral regime at its output.
Do not earth the output neutral.
When, it is needed to modify the output neutral regime, an
isolation transformer has to be located between the loads and
the equipment.
•
In those models with separate bypass line, an isolation
transformer has to be located in both input lines
(rectifier input or static bypass), in order to avoid the
direct connection of the neutral lines at both lines through
the internal wiring of the equipment.
This is only applicable when the two power supplies come from
different lines, i.e.::
Two different electrical companies.
