11
Operation
OperatiOnal manual
MN156001EN October 2015 www.eaton.com
Any capacity left over is used for harmonic mitigation.
When the unit is sized to correct both harmonic current
and fundamental currents, PF, and/or load balancing, this
parameter has no effect.
The total percentage of adding Harmonic priority to
fundamental priority can be greater than 100%. The rated
output current of the active filter is equal to the rms-sum
of the harmonic and reactive current injected. The following
table provides a representation of this relationship. All
values are in percentage of rated output current.
Dual mode output percentiles
Harmonic
current
drawn
by load
100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0%
Maximum
reactive
current
available
0%
44% 60% 71% 80% 87% 92% 95% 98% 99% 100%
You can use the following formulas to calculate this current
relationship:
I
O/P
2
=
I
h
2
+
I
r
2
or
I
O/P
=
SQRT
(
I
h
2
+
I
r
2
)
Where
•
I
O/P
is the total output current of active filter
•
I
h
is the injected harmonic current of active filter
•
I
r
is the injected reactive current of active filter
Use these percentages to determine the amount of current
available for each function. Multiply the percentage by the
active filter rated current to obtain the approximate amount
of correction provided by the active filter for each function.
Compensation Mode Screen (EVI2 type)
Reactive Mode—PFe:
Activates/Deactivates the Power
Factor correction mode. With PF mode selected, additional
parameters available for the PF mode are displayed.
Optimized PFe:
When set to OFF, the unit maintains the
PF cos (phi) setting. When set to ON and the load is less
than the PF cos (phi) setting, the unit corrects the power
factor to PF cos (phi). If the load PF is greater than the
setting, the unit does not compensate unless the power
factor is set to maintain a Lag power factor and the load
becomes leading. Then, the unit corrects the power factor
to a PF cos (phi) of 1.00. If the PF cos (phi) is set to Lead
and the power factor of the load is lagging, the unit corrects
to a PF cos (phi) of 1.00.
Example:
With a PF cos (phi) set to 0.98 Lag, the unit
maintains a Power Factor of 0.98 Lag when the corrected
load is lagging. If the power factor improves to 0.99, no
compensation is provided. If the connected load produces
a leading power factor, the unit corrects the power factor
to 1.00.
PF cos (phi)e:
Target power factor setting. The power factor
can be set for either a leading or lagging cos(phi).
Load Balancinge:
When ON, the unit corrects for load
imbalance (negative sequence current).
Reactive Mode—V-Rege:
Voltage Regulation Mode. Voltage
regulation mode monitors the voltage and adjusts the
reactive current injected to maintain a voltage level.
V-Reg Set Pointe:
Sets the desired voltage to be maintained.
