Ciber UACF15P1-P2 Manual De Operación página 191

QUALIDADE NA ENERGIA ELÉTRICA
QUALITÉ EN ENERGIE ELECTRIQUE
(EN)
Below is a small idea of what these disturbances are, the causes that generate them, their effects, and the solutions that
can be adopted.
FIGURE DISTURBANCES
TRANSIENTS
These voltage variations are of
high amplitude, high frequency,
and short duration and are also
called spikes.
NOISE
Variations of low amplitude, high
frequency voltage over a long
time.
HARMONICS
The harmonic currents are
generated by the non-linear loads
connected to the network. The
circulation of harmonic currents
generates harmonic voltage by
the network's impedances and
therefore a deformation of the
supply voltage.
INTERRUPTIONS IN THE
VOLTAGE
The voltage variations for a short
period can be characterized by
instantaneous, momentary, or
temporary changes. These
voltage variations are generally
caused by the energizing of large
loads that require high start-up
currents or by intermittent failures
in the connections of the system's
wires. Depending on the location
of the failure and the system's
conditions, the result can be a
voltage drop or rise of variable
duration or even a complete
interruption of the electric system.
08/2010 CC.15 / CC.17 / CC.19
CALIDAD EN LA ENERGÍA ELÉCTRICA
CAUSE
In general, the transients
are originated from causes
internal to the installation
(electrostatic discharges,
switches by the power
company and/or the
addition of large loads
such as welding
machines, capacitor
banks, etc.) and for
external reasons such as
lightning, which is the
most dangerous.
Frequencies and magnetic
fields generated by other
electrical-electronic
equipment.
UPS, electronic reactors,
frequency inverters,
regulators, and other non-
linear loads.
Overloaded equipment
and wiring, improper
utilization of transformers,
under-sized wiring, or
poorly made connections.
01.06.01
ELECTRIC ENERGY QUALITY
EFFECT SOLUTION
Locking, loss of
memory,
processing errors,
Transient
burning of
suppressors,
electronic plates,
insulation
and the damage of
transformers.
insulation material
as well as of
equipment.
Locking, loss of Insulation
data, processing transformers, line
errors. filters.
Overheating of
wires and Harmonic filters,
equipment, line reactors,
lowering motor improvement in the
performance, wiring and
erroneous grounding,
operation of circuit insulation
breakers, relays, transformers.
and fuses.
Equipment turning
Correctly
off, motors
dimension wires
overheating,
and motors and
reduction of useful
check the electric
life or efficiency of
connections.
the equipment.
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