A poor power quality manifests itself as
frequent voltage fluctuations. When your equipment does not get optimum
voltage, it consumes excessive energy. This energy wastage is, however,
invisible & goes unnoticed, but this poor quality power will have a great
impact on our energy bills as well as our costly equipment could be damaged due
to this voltage fluctuation.
Now we consider the two cases i.e over
voltage and low voltage, in first case i.e in case when the voltage is higher
than the voltage at which equipment is designed to operate most effectively.
Due to this over voltage problem equip.lifetime will reduced and increases in
energy consumption without any improvement in performance. Similarly in second case
when the voltage goes on lower side than the required/ designed voltage, due to
this problem number of problem will generate in equip., for example contactors
and relays may drop out which will be the reason for interruption in operation
of machines.
Besides of above two causes there are one
another factor, also have a great impact on voltage optimization i.e imbalance
of phase voltages. Unbalancing between the phase voltages generate the various
problem like heating motors and wiring, increased energy consumption etc.
Here we are showing some illustration test
case through which we can conclude that how we can save the energy through
control the voltage variation or voltage optimization.
Saving Through Voltage Optimization
Following test of KW consumption on assorted
motive load of a cable plant conducted at various voltages will help you
calculate the potential savings on your general motive load.
Thus, if your plant gets a voltage of 433 for
8 hrs, & you stabilize your voltage at 400 V, your saving potential is
(19.2 – 16.8)/ 19.2 x 100 = 14% App.
WE CAN
JUDGE THAT WE CAN SAVE UPTO 14% ON OUR ENERGY BILLS.
Saving Through Balancing The Voltage in
All Phases
When line voltages applied to a three phase
induction motor phase voltages are not exactly the same, unbalanced currents
will flow in the stator winding due to this unbalancing voltage, the magnitude
depending upon the amount of unbalance. The currents at normal operating speed
with unbalanced voltages will be unbalanced to the order of approx. 10-12 times
the voltage unbalance.
We are showing here a typical derating curve
showing that a voltage unbalance by even 2.5 % of the nominal voltage can derate the motor by up to 10%.
So with the help of installation of servo
voltage stabilizer we can also get the balancing voltage in all three phases
and gets a bonus on our investment in the form of energy saving which will
directly impacts our energy bills.
Some certificates issued by our esteemed client enclosed herewith for reference-
In case any enquiry regarding energy efficient transformer free feel to contact us at info@saielectricals.com
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