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SALICRU
4.3. OPERATING PRINCIPLE.
This manual describes the installation and operation of SLC TWIN
PRO2 A series UPSs as devices that can operate separately. SLC
TWIN PRO2 A series UPSs ensure optimum protection of any critical
load, maintaining the supply voltage of the loads between the speci-
fied parameters without interruption during failure, deterioration or
fluctuation of mains power, and come in a range of models available
from 1kVA to 3kVA, enabling end users to select the model that best
suits their needs.
Thanks to their pulse width modulation
(PWM)
and double-conver-
sion technology, SLC TWIN PRO2 A series UPSs are compact, cool,
silent and high performance.
The double-conversion principle eliminates all mains power distur-
bances. A rectifier converts the AC current of the mains into DC cur-
rent, thereby maintaining optimum battery charge level and powering
the inverter, which, in turn, generates a suitable AC sine-wave voltage
for continuously powering the loads. In the event of failure of the
UPS’s mains power, the batteries supply clean power to the inverter.
The design and construction of the SLC TWIN PRO2 A series UPS
has been carried out in accordance with international standards.
Thus, this series has been designed to maximise the availability
of critical loads and to ensure that your business is protected from
variations in power distribution line voltage, frequency, electrical
noise, cuts and micro-cuts. This is the primary goal of SLC TWIN
PRO2 A series UPSs.
This manual applies to the standardised models shown in Tab. 1.
Model
Power (VA)
Type
SLC-1000-TWIN PRO2 A
1000
Standard
SLC-2000-TWIN PRO2 A
2000
SLC-3000-TWIN PRO2 A
3000
SLC-1000-TWIN PRO2 A B1
1000
Standard with
extended backup
SLC-2000-TWIN PRO2 A B1
2000
SLC-3000-TWIN PRO2 A B1
3000
Tab. 1.
Basic standardised models.
4.3.1. Notable features.
•
Genuine on-line with double-conversion technology and output
frequency separate from the mains.
•
Output power factor 1 and pure sine waveform, suitable for al-
most all kinds of loads.
•
Input power factor > 0.99 and high overall performance between
0.89 and 0.91 depending on the model. A greater energy saving
and a lower cost of user installation
(wiring)
are obtained, as
well as a low distortion in the input current and a reduction of
the pollution in the power supply network
•
Great adaptability to the worst conditions of the mains. Wide
input voltage, frequency and waveform ranges, thus avoiding
excessive dependence on limited battery power.
•
Possibility of extending autonomy easily and quickly by adding
battery modules. Each of them has two connectors for connection
to the device and / or other identical modules.
•
Charger current setting up to 8 A to decrease battery recharge
time.
•
High performance selectable mode > 0.97 [ECO-MODE]. Energy
saving, which reverts economically to the user.
•
Possibility of starting up the equipment without a power supply
or a discharged battery. Take care of the last aspect, since
autonomy will be reduced the more downloaded.
•
The intelligent battery management technology is very useful to
extend the life of the batteries and optimize the recharge time.
•
Standard communication options via RS 232 or USB serial port.
•
Remote emergency stop control signal [EPO].
•
Interface between user and equipment through control panel
with LCD screen, easy to use.
•
Optional connectivity cards available to improve communication
capabilities.
4.4. OPTIONAL EXTRAS.
Depending on the configuration chosen, the device can include any
of the following options:
4.4.1. Isolation transformer:
The isolation transformer provides galvanic isolation to completely
isolate the output from the input.
The placement of an electrostatic screen between the primary and
secondary windings of the transformer provides a high level of elec-
trical noise attenuation.
The isolation transformer can be installed at the input or output of
the SLC TWIN PRO2 A series UPS and will always be located in an
enclosure external to the device.
4.4.2. Exterior manual maintenance bypass.
The purpose of this option is to electrically isolate the device from
the mains and the critical loads without cutting the power to the
latter. This way, maintenance or repair operations on the device can
be carried out without interruptions to the power supply of the pro-
tected system, while preventing unnecessary hazards for technical
personnel, since it enables the UPS to be fully disconnected from
the installation.
4.4.3. Communications card.
The UPS has on its back an "intelligent slot" for the insertion of one
of the communication cards mentioned in this section.
4.4.3.1. Integration into computer networks using an SNMP
adapter.
Large computer systems based on LANs and WANs that integrate
servers into different operating systems must include the ease of
control and administration available to the system manager. This
facility is obtained through the SNMP adapter, universally supported
by leading software and hardware manufacturers.
The connection of the UPS to the SNMP is internal while that of the
SNMP to the computer network is made through an RJ45 10 base
connector.
4.4.3.2. MODBUS protocol.
Large computer systems based on LANs and WANs often require
that communication with any element that is integrated into the
computer network be made through a standard industrial protocol.
One of the most used standard industrial protocols on the market
