ITALFARAD PFC96evo Specification sheet

Italfarad S.p.A. Via IV Novembre n.1 40061 Minerbio Bologna Italy Tel.[phone] Fax [phone] E-mail: [e-mail] Web:www.italfarad.com
APPARECCHIATURE AUTOMATICHE DI RIFASAMENTO
MANUALE OPERATIVO D’INSTALLAZIONE
USO E MANUTENZIONE
AUTOMATIC POWER FACTOR CORRECTION EQUIPMENT
OPERATING AND INSTALLATION MANUAL
USE AND MAINTENANCE

Italfarad S.p.A. Via IV Novembre n.1 40061 Minerbio Bologna Italy Tel.[phone] Fax [phone] E-mail: [e-mail] Web:www.italfarad.com2

Italfarad S.p.A. Via IV Novembre n.1 40061 Minerbio Bologna Italy Tel.[phone] Fax [phone] E-mail: [e-mail] Web:www.italfarad.com 13
1. General remarks
The automa•c power factor correc•on equipments type PF
are used to keep the power factor to an average value higher
than an expected one.
The regula•on is obtained by means of a suitable electronic
regulator of reac•ve power with high sensibility and
precision.
The equipment consist of capacitors banks which are
connected and disconnected automa•cally, depending on
the reac•ve power required by the load, by mean of special
contactors.
The capacitors are single phase or three phase type,
provided with discharge resistors and overpressure safety
device, in compliance with the IEC Standards.
The enclosure is of steel cabinet, painted with epoxy resins
with minimum protec•on degree IP30.
2. Connec•on to the network
The three phases of the network must be connected
respec•vely to R (L1), S (L2) and T (L3) terminals onto the
main switch.
For earthing the bar on the right side of the equipment, or
the earth terminal, must be used.
Terminals K (S1) and L (S2) must be connected to the
secondary of a Current Transformer (CT) with secondary
current 5A connected on the phase R (L1) (see Fig.1).
In order to work properly the equipment must be connected
as indicated in Fig.1; on the same page some typical
connec•on mistakes are shown.
Index Page
General remarks 13
Connec!on to the network 13
Start and use 13
Control of the automa!c opera!on 14
Maintenance 14
Connec!on diagram 15
CT Connec!on place 15
Power factor controller PFC96evo 16
Power factor controller PFC144evo 19
Maintenance log 22
3 Start and use
ATTENTION"
Before switching to the equipment on, check the correct
•ghtening of all the connec•ons. Repeat this opera•on
periodically.
At the first switch on, the controller will show the indica•on
“Ct”.
Press “+“ and “-” (controller type PFC) or “↑” and
“↓” (controller type PFCevo) to set the value of the primary
current of the CT. Press manual/automa•c bu#on to validate
the value.
If regulator is correcty installed the equipment connects and
disconnects automa•cally the capacitor banks according to
the load varia•on; in this case the number of banks
connected is evidence by the leds STEP on the regulator.
If during the first installa•on, the regulator of reac•ve power
would show a capaci•ve load and no banks have been
connected, the CT has been installed on the wrong phase
(see fig. 1 and 2).
In order to avoid that the limits of overtemperature are
passed inside the cabinet, the reac•ve power regulator starts
the fan when temperature is higher than the threshold.
If the temperature inside the cabinet, in spite of the cooling
due to the fan opera•on, reaches 50°C, all the banks are
disconnected and a remote signal alarm is ac•vated.
In the equipments which are equipped with SPC2 device, the
ven•la•on and the alarm signal are generated by SPC2.
ATTENTION!
Using the manual control please wait at least 1 minute
before connec•ng the same bank again.
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Italfarad S.p.A. Via IV Novembre n.1 40061 Minerbio Bologna Italy Tel.[phone] Fax [phone] E-mail: [e-mail] Web:www.italfarad.com14
4. Control of the automa•c opera•on
The check of the correct opera•on of the automa•c
regulator can be effected by modifying the load condi•ons in
a suitable way.
If the opera•on is not correct the reason should be founded
among one of the following errors:
· CT connected on the wrong phase (see Fig.2).
· CT installed between the equipment and the load (see
Fig.2).
· CT inserted on the supply cables of the power factor
correc•on equipment (see Fig.2).
· Defec•ve or unsuitable CT.
5.1 Connec•on in installa•on provided with power
generator (PV or co-generator)
Before carry out the verifica•on in accordance with point 5,
it is necessary to follow the following indica•ons:
1. change the se#ng parameters:
· For controller type PFC, P12 parameter, set “Dir” or
“Inv” (the value which give the correct measurement
of the Power Factor).
· For controller type PFCevo, P04 parameter, set “Dir”
or “Inv” (the value which give the correct
measurement of the Power Factor).
2. switch off the power generator un•l the verifica•on of the
PFC equipment has been completed.
3. A$er the comple•on of the PFC equipment verifica•on,
the power generator can be switched on.
5. Maintenance
Periodical check must be carried out on:
· Current drawn by every single step, in order to keep the
opera•ng condi•ons of the equipment always under
control.
· All electronic parts (reac•ve power regulator and
protec•on module, if present) in order to check their
efficiency.
· Protec•on fuses on the auxiliary circuits.
· Protec•on fuses on the capacitor banks (provided with
signal).
· The efficiency of the coolong system, checking that the
fans are not defec•ve or mechanically blocked and
cleaning with an air jet the relevamt grilles.
· The efficiency of the contactors, by replacing those which
are defec•ve and periodically checking the •ghtening of
the terminals.
· The presence of capacitors with overpressure device
tripped (these single phase units must be replaced to do
not jeopardize the performance of the complete
equipment).
This last check is par•cularly important for .../A and ../HA
where checking that the tuning frequency of the filter does
not change in the •me, is basical; even using high quality
components, it can occur that some capacitor fails causing
the trip of the overpressure safety device.
The consequent loss of capacitance may cause a change of
the tuning frequency of the filter with consequent dangerous
overloads.
In view of the above, a periodical test has to be carried out
to check the presence of capacitors with tripped
overpressure device (these have an expansion of the upper
part of the case) replacing them with new capacitors.
In order to prevent possible reduc•on of the original
capacitance values (this phenomena can involve more than a
capacitor) it is useful to check during the installa•on, a$er
the first month of opera•on and then two or three •me a
year, the current adsorbed by the banks, connec•ng them
manually with no load condi•on and taking note of the
results on the maintenance form.
Big differences in measures or eventual unbalances of the
three phases show the need of a special maintenance.
ATTENTION!
Further to the check of the correct thighteing af all the
connec"on, periodically clean the equipment inside by
removing possible dust not compa"ble with the good
opera"on of the equipment.
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Italfarad S.p.A. ViaIV Novembre n.1 40061 Minerbio Bologna Italy Tel.[phone] Fax [phone] E-mail: [e-mail] Web:www.italfarad.com 15
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