15
5.1.6. Preliminary considerations before connection.
•
Check that the information on the device’s nameplate is that re-
quired for installation.
•
A bad connection or operation can cause faults in the UPS and/
or the loads connected to it. Read the instructions in this manual
carefully and follow the steps indicated in the order established.
•
All of the devices have a cable with plug for connection to the
power supply.
Similarly, ‘N’ NEMA 5-15R output sockets are supplied de-
pending on the model for connection to the loads [outputs].
For other connections, a connector for connection to the batteries
[B1 version] and connectors for the communications are used.
•
The cross section of the input line cables will be determined by
the current indicated on the nameplate of each device, in com-
pliance with local and/or national low-voltage electrotechnical
regulations.
•
The protections of the distribution board should have the fol-
lowing characteristics:
For the input line, a type-B differential circuit breaker and
C-curve circuit breaker.
For the output (powering loads), a C-curve circuit breaker.
As for size, they should at least be the current indicated on the
nameplate of the UPS.
•
Only rated currents are printed on the nameplate of the device
as indicated by the EN-IEC 62040-1 safety standard. For the cal-
culation of the input current, the power factor and the device's
own performance have been considered.
Overload conditions are considered a non-permanent and excep-
tional working mode.
•
If peripheral input or output elements, such as transformers or
autotransformers, are added to the UPS, the currents indicated
on the nameplates of these elements must be taken into consid-
eration when determining appropriate cross sections, in com-
pliance with local and/or national low voltage electrotechnical
regulations.
•
When a device incorporates a galvanic isolation trans-
former as standard, as an optional extra or installed inde-
pendently, either at the input, output or both, it must be fitted with
protection against indirect contact (differential circuit breaker) at
the output of each transformer, since, due to its own insulation
properties, it will prevent the tripping of the protections placed on
the primary of the isolation transformer in case of electric shock
on the secondary (output of the isolation transformer).
•
We remind you that all the isolation transformers installed or
factory supplied, have the output neutral earthed through a
jumper between the neutral terminal and earth. If the isolated
output neutral is required, this jumper must be removed, taking
the precautions indicated in the respective local and/or national
low voltage regulations.
•
All standard UPSs incorporate the batteries in the same box as
the device, except the B1s. In the first, battery protection is by
means of internal fuses and is not accessible to the user.
Similarly, the battery modules also have internal protections by
means of fuses and, as in the case of the device itself, they are
not accessible to the user either.
5.2. CONNECTIONS.
•
The cross sections of the cables used to power the device
and loads must be in accordance with the rated current
indicated on the device’s nameplate and comply with the low
voltage electrotechnical regulations or legislation of the respec-
tive country.
•
The installation must be equipped with input protections suitable
for the current of the device and indicated on the nameplate (type-
B differential circuit breakers, C-curve circuit breaker or equiva-
lent).
Overload conditions are considered a non-permanent and excep-
tional working mode, and these currents should not be taken into
account in the application of the protections.
•
To insert optional cards, it is necessary to remove the screws from
the smart slot cover and cover itself.
5.2.1. Connection of the input.
Cable entry with integrated NEMA plug according to model:
•
For 1 kVA equipment: NEMA 5-15P plug.
•
For 2 kVA equipment: NEMA 5-20P plug.
•
For 3 kVA equipment: NEMA L5-30P plug.
Plug it into an AC power socket.
5.2.2. Connection of the output.
•
The equipment has NEMA female sockets, distributed as follows
according to power:
1 kVA model. 1 group of 4 NEMA 5-15R sockets identified
as “OUTPUT” and 1 group of 2 NEMA 5-15R sockets as
“OUTPUT PROGRAMMABLE
(P1)
”, configurable through the
control panel and / or ViewPower.
2 and 3 kVA models. 2 groups of 4 NEMA 5-20R sockets
identified as "OUTPUT" and "OUTPUT PROGRAMMABLE
(P1)
", configurable through the control panel and / or
ViewPower. The 3kVA model also has an additional NEMA
5-30R 30 A socket.
•
Connect the loads to the NEMA sockets.
The sum of the loads connected to the different NEMA
5-15R sockets must not under any circumstances exceed
the rated power of the device.
•
It is important to consider the two groups of available sockets,
general outputs for "Critical Loads" and programmable outputs
for "Non-Critical" loads.
By definition it is understood as "Critical Loads" those that when
they stop working or when they work improperly can cause eco-
nomic damages.
The NEMA sockets indicated as programmable can be pro-
grammed through the control panel (codes 9 and 10 settings menu
Fig. 11). In this case, the backup time of critical devices can be
extended by setting a shorter backup time for non-critical devices.
•
If, in addition to the more sensitive loads, it is necessary to
connect inductive loads of high consumption such as laser
printers or CRT monitors, the starting points of these peripherals
will be taken into account to avoid blocking the equipment under
the worst conditions.
We advise against connecting loads of this type, due to the
amount of energy resources they absorb from the UPS.
SLC TWIN PRO2
UNINTERRUPTIBLE POWER SUPPLY (UPS)
USER MANUAL
