18
SALICRU
•
ImpoRTAnT FoR SAFeTy: If batteries are installed
independently, the accumulator group must be fitted
with a bipolar circuit breaker or disconnect fuse of the size
•
Inside the battery module, there are hAZARdoUS
voLTAgeS with risk of electric shock, so it is classified as a
ReSTRICTed ACCeSS AReA.
•
do not handle the fuse holder or battery circuit
breaker when the device is running.
•
If the mains power of the device or parallel system
is cut for longer than a simple intervention and it is
expected that it will be out of service for a prolonged period
time, the system must be shut down completely.
•
The battery circuit is not isolated from the input
voltage. dangerous voltages can occur between the
terminals of the battery group and the earth. Check that
there is no input voltage before intervening on the terminals.
5.1.5.10. Connection elements.
•
All of the device’s electrical connections are made from the
back of each unit:
Input and output connection.
–
For models up to 3 kvA.
Input by means of a cable with plug, connectable to
the UpS through an IeC connector.
outputs through IeC connectors.
–
For models with power ratings greater than 3 kvA.
Terminals for powering the device and loads.
It is necessary to remove the transparent protective
cover to access the terminals.
Replace the cover after making the
connections to prevent possible accidents
due to direct contact, especially in tower mountings
as there is a greater risk.
Connection to batteries.
–
The device and battery module have a polarised
connector.
Remove the screws and protective cover of the
connector before interconnecting it.
–
All battery modules have two connectors that
enable backup extension.
Communication connectors available:
–
db9 for RS232. In models up to 3 kvA, the interface
to relays signals are supplied with the same
connector.
–
USb to operate the UpS as a pC peripheral.
–
digital input and output (only in models > 3 kvA).
–
For connection to external epo button.
–
Auxiliary contact for the manual bypass switch
(only in models > 3 kvA).
db15 communication bus connectors and analogue
current signal block for connecting systems in parallel
(only in models > 3 kvA).
To access the signal block, it is necessary to remove its
protective cover.
Slot for the integration of one of the optional electronic
communication units. Remove the fixing screws and
plastic cover to enable it to be inserted.
•
It is recommended to use terminals on all of the ends of
the cables connected to power terminals (input and output).
•
Check that the terminal screws are correctly tightened.
5.2. ConneCTions.
5.2.1. Connection of the input.
•
0.7 to 3 kvA models:
Take the power cable with plug and IeC connector on
the end and insert the latter into the input connector
of the UpS.
plug the power cable into an AC power socket with
earthing.
•
4 to 10 kvA models:
As the device has Class I protection against
electric shock, it is essential to install a
protective earth conductor (connect earth (
)).
Connect this conductor before supplying voltage to the
input terminals.
Connect the power cables to the input terminals
respecting the order of the phase (R) and the
neutral (n) indicated on the labelling of the device and in
this manual.
Pay particular attention
when connecting
the power cables to the input terminals and
do not
reverse
the connection to the output terminals or vice
versa. Failure to respect the order will result in faults.
where there are discrepancies between the labelling
and the instructions in this manual, labelling shall
always prevail.
In accordance with safety standard en-IeC 62040-1, the
facility must be equipped with an automatic backfeed
protection system, such as a contactor, which prevents
the appearance of hazardous voltage or power on the
UpS input line during a mains failure (see Fig. 12).
The standard applies to both individual units and all
UpSs in parallel systems.
There can be no derivation of the line that goes
from the backfeed protection to the UpS, as this
would breach the safety standard.
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.
Return voltage risk of the UPS.
