Salicru SLC TWIN PRO3/RT3 Mode D'emploi page 89

10. GLOSSARY.
AC Bypass.-
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network, controlled by the UPS and which allows direct power
supply of the unit via the electrical network in case of overload
or failure in the operation of the UPS inverter.
AC.-
Alternating current is electric current in which the
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magnitude and direction vary cyclically. The waveform
of the most commonly used alternating current is that
of a sine wave, since this achieves a more efficient
transmission of energy. In certain applications, however,
other periodic waveforms are used, such as triangular
or square.
Automatic battery test.-
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to identify any weaknesses in the battery and to check its
condition before it can cause a fault and block in the UPS.
It includes brief discharges (simulated and real) of the battery
and can generate alarms if the battery voltage falls below
a preset level.
Autonomy.-
It can also be referred to as "backup or download
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time". Battery autonomy is a measure of how long the battery
will support the critical load during a power cut. The autonomy
of a UPS is directly related to the state of charge of the battery
and its capacity, as well as the size of the load connected to
the UPS.
Bypass.-
Manual or automatic, this is the physical
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connection between the input of an electrical device and
its output.
Circuit breaker.-
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interrupting the electrical current of a circuit when it exceeds
certain maximum values.
DC.-
Direct current is the continuous flow of electrons through
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a conductor between two points with different potential.
Unlike AC, in DC, electrical loads always circulate in the same
direction from the point of greatest potential to the lowest.
Although DC is commonly identified as a continuous current
(for example, that supplied by a battery), any current that
always maintains the same polarity is continuous.
Deep discharge.-
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allowed limit, which causes irreversible damage to the battery.
Double conversion On-Line UPS.-
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technology because the UPS receives AC power from the
network, rectifies it into DC for conditioning and charging the
battery, and then inverts it into clean alternating current to be
supplied to the loads connected to the UPS. In the event of
overvoltage or network failure, the UPS continues to power
the load from its battery without any delay in the transfer.
As long as the duration of the network disturbance is less
than the battery autonomy, the event remains invisible for the
connected loads.
Dry contacts.-
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form of signals.
USER MANUAL
Derived from the electrical power supply
It is a scheduled test designed
A circuit breaker is a device capable of
Discharge of the battery higher than the
It refers to On-Line
They provide information to the user in the
DSP.-
Digital signal processor. A DSP is a processor or
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microprocessor-based system that has a set of instructions,
hardware and optimised software for applications that require
numerical operations at very high speed. Because of this, it is
especially useful for the processing and representation of
analogue signals in real time: in a system that works in this
way (real time) samples are usually received from an analogue/
digital converter (ADC).
EBM (External Battery Module).-
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module to extend the autonomy of the UPS.
Eco mode (ECO).- Function of making the UPS work via its
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bypass line, making the system itself intervene only when the
conditions of the supply line deviate from their rated values.
EMI filter.-
Filter capable of significantly reducing
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electromagnetic interference, which is the disturbance that
occurs in a radio receiver or in any other electrical circuit
caused by electromagnetic radiation from an external source.
It is also known as EMI (ElectroMagnetic Interference), Radio
Frequency Interference or RFI. This disturbance can interrupt,
degrade or limit the performance of the circuit.
Frequency converter (FC).-
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frequency of the electrical network to be converted between
the input and output of the UPS (50 Hz → 60 Hz or 60 Hz →
50 hz).
GND.- The term ground (GND), as its name indicates, refers to
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the potential of the Earth's surface.
Hot Swap.-
In a UPS, the term "Hot Swap" is applied to any
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module or component of the UPS that can be added to or
removed from the UPS without interrupting the power to the
connected loads.
IGBT.- An insulated gate bipolar transistor (IGBT) is
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a semiconductor device that is generally used as a controlled
switch in power electronics circuits. This device possesses the
characteristics of the gate signals of field effect transistors
with the capacity for high current and low saturation voltage
of the bipolar transistor, combining an isolated FET gate for the
control input and a bipolar transistor as a switch in a single
device. The IGBT's excitation circuit is similar to that of the
MOSFET, while the conducting characteristics are similar to
those of the BJT.
Interface.-
In electronics, telecommunications, and
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hardware, an (electronic) interface is the port (physical circuit)
through which signals are sent or received from one system or
subsystems to others.
Inverter.-
An inverter is a circuit used to convert DC into AC.
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The function of an inverter is to change a DC input voltage
to a symmetrical AC output voltage, with the magnitude and
frequency desired by the user or designer.
kVA.- A volt-ampere is the unit used for apparent power
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in electrical current. In direct or continuous current, it is
practically equal to the real power, but in alternating current
it can differ from it depending on the power factor.
SLC TWIN PRO3/RT3 4÷10 kVA UNINTERRUPTIBLE POWER SUPPLIES (UPS)
Battery extension
This function allows the
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