(R) Ice'Di Griz / Triumph:
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Uninterrupted operation of any electrical
technical and electronic equipment
depends on the stability of parameters of
industrial network. Stability parameters
network can be expressed in network interference, based
vnymi of which are high
pulsed voltage surges (up to 3 kV)
Periodic surges at
amplitude, long-term decline in
voltage to 150-170 V, periodic
voltage drop when connecting a powerful
equipment, frequency instability,
supply voltage short interruptions
of, etc. etc. All of these bugs affect
to the computer. Unique
vennoy protected computer and other equip
dovaniya from network interference are the source
Nicky UPS - UPS, or
(Uninterruptible Power Supply).
Depending on the operating principle there are three types
of UPS:
1. UPS architecture off-line.
In multiplayer mode, UPS off-line
feeds the computer through a branch,
containing only the input
filter.
Simultaneously, the charger recharges the UPS batteries. If the
pitch electricity declined or
supply voltage was below
some acceptable value,
UPS includes a battery power. Since the computer and peripheral
equipment provides voltage industrial AC, constant battery
voltage to be converted a variable with a value corresponding
to the nominal value of voltage. For
that the UPS uses a special device - Inverter. Among the
advantages of UPS off-line it is worth noting the simplicity
circuit design, low cost, minimum size and weight.
These sources are useful
used to protect personal computers, peripheral equipment,
consumer office equipment.
2. UPS architecture on-line.
UPS of this type are called
sources with a double drive. They input voltage through the
rectifier converted into a permanent and
enters the high-
(HF) transducer.
The output of RF converter
voltage high frequency
goes to the inverter and from the
the output device. The need for an RF converter due to the fact
that significant changes in voltage are converted into
relatively small changes in frequency of the RF signal and its
output. Charger and
the battery is connected directly to the output of UPS. This
achieved little time switching and stability parameters for the
output variable voltage UPS. In addition,
this construction type UPS
on-line provides galvanic isolation between the industrial
network and power supply computer. Uninterruptible power supply
architecture on-line have a higher
value and used when needed a reliable and
quality protection of vital
essential equipment, often
working around the clock (eg servers).
3. UPS hybrid architecture
(Line interactive UPS).
In essence, these UPS are
improvement in UPS type
off-line. Such sources
inverter is continuously connected
to the exit, so ensure
ensured electrical isolation. Such power can, in principle
yuzatsya to protect the equipment of both
described above categories. Often the choice between UPS type
on-line and line interactive
determined not so much the functional characteristics
how much they cost.
