Instruction Manual 15
Table 7-5.- Nominal consumption of the LC steps of an FR filter, depending on its power
CURRENT
POWER
230V 400V
In In
2.5 kvar
6.28 A 3.6 A
5 kvar
12.56 A 7.2 A
7.5 kvar 18.85 A 10.8 A
10 kvar
25.12 A 14.4 A
12.5 kvar
31.41 A 18 A
15 kvar 37.7 A 21.6 A
20 kvar
50.24 A 28.8 A
25 kvar
62.82 A 36 A
30 kvar
75.4 A 43.2 A
40 kvar 100.48 A 57.6 A
50 kvar
125.64 A 72 A
60 kvar
150.8 A 86.4 A
70 kvar
175.92 A 101.1 A
80 kvar
200.96 A 115 A
- Check the voltage on all of the reactor's windings (input to output of the same winding, not
between phases). The voltage depends on the filter's p% factor (see label on the
equipment). The voltage must be in accordance with the following formula:
%)p100(
%p.577,0
VV
)phase_to_phase(MainsL
−
=
For example, in the case of the 400V grid and p%=7, V
L
=17.38V. For the 400V grid and
p%=14, V
L
=37.57V. The value is proportional to the voltage for other voltages.
NOTES:
• When the consumption of the steps is 25% less than that stated in Table 7-5 and the voltage
is within the tolerance limits, this is a sign of degradation of the capacitors. These must be
replaced with a suitable spare part if these symptoms are detected in a step.
• When the consumption of the steps is 10% more than the values stated in Table 7-5, this can
be caused by the presence of resonances. If this is detected, measure the grid's voltage THD
(it must be under 5%) or check the filter's tuning frequency.
• If the voltage drop in a reactor deviates from the values stated in this section, check the
reactor. This phenomenon can be caused by the presence of a resonance.
7.3.3 PF Regulator Checkings.
Refer to the manual of the specific PF regulator used in the filter bank. This
manual is always supplied with the filter bank.
• Make sure that there are no damaged segments on the display (abnormal brightness).
• Make sure that regulator's keyboard is working properly:
- Enter Setup and check the adjusted values
- Force the manual connection and disconnection of a step.
7.4 Environmental Conditions:
• Check that the maximum environmental conditions listed in section 4.3 are observed
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