Specifications

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3.STABILIZERS COMBINED WITH UPS
2. STATIC STABILIZERS
Fluctuations (up to 25%) may occur in the
amplitude and form of the voltage mainly
due to:
•switching on of high power equipment
•starting of critical equipment (motors,
lifts, lighting devices)
•short-circuit on secondary equipment and
other situations that occur daily on the
public mains supply.
•a computer may be damaged or make
calculation errors
•a laboratory appliance may make
measurement errors
•an industrial control may drive the
process incorrectly
Stabilizers are the solution to voltage
fluctuations.
There are various types of stabilization
devices:
1. Dynamic stabilizers
2. Static stabilizers
3. Stabilizers combined with UPS
Maintain voltage stability using a dynamic device
(variable with brushes) that adds or subtracts
voltage to/from the input network compensating
for any deformations or fluctuations
Advantages:
•reduced weight and dimensions
•reduced cost
•reduced maintenance
•availability of a wide power range
•high level efficiency
•high level compensation capacity (also for
very variable input network (+/-25%)
•a version able to power unbalanced three-phase
loads or with a maximum imbalance between the
phases of 50%
•a version able to power even up to 100%
unbalanced three-phase loads and to guarantee
high level precision both with unbalanced loads
and asymmetrical voltages.
•high quality voltage
•improved protection of the load against
electromagnetic disturbances
They are normally used for sensitive loads
(information technology, Industrial PLCs, etc.)
Stabilizers can be used together with UPS, in
particular to stabilize the back-up network and
to obtain a stabilized voltage even when the
UPS powers the load with the back-up network
through the bypass circuit (for example, in case
of an overload).
STABILIZERS RANGE
1. DYNAMIC STABILIZERS
WHY USE STABILIZERS?
These phenomena are further amplified if the power
is supplied by independent power systems
(generators).
These fluctuations may cause serious problems (that
are often not obvious) for electrical equipment.
Powering a bulb at 10% above its rated value
reduces the life of the bulb by half whereas if it is
powered 30% below the same value, it loses 30% of
its brightness.
The more complex the equipment, the greater the
damage:
They are normally used for less sensitive, high
power loads (processes, lights) with high
absorption at start-up (motors, air
conditioners, compressors, pumps).
There are two versions of dynamic stabilizers:
Maintain voltage stability using an
electronically-controlled static device
(transistor) which acts on the secondary
of a transformer, responding quickly and
correcting the voltage fluctuations.
Advantages: