NOTE:
combination of 2 keys:
AUTO/MAN +
AUTO/MAN +
+ AUTO/MAN
4) HOW IT WORKS
5) MAINS CONNECTION
“FF1”
DUCATI ENERGIA
“FF2”
Warning:
“F-n”
6) INSTRUCTIONS FOR INSTALLING THE C.T.
VERY IMPORTANT:
ab
The front panel of REGO features a series of keys
for accessing functions and programming; some functions
are activated by pressing a in this
manual, when mention is made of a two-key combination
(e.g. ), it means that the user must press
the first key and, without releasing it, then press the second
one. (In fact the combination activates a
different function from the combination .
The measured current from the mains C.T. is filtered and
compared with the required power factor and the insensitivity
zone: if the conditions set by the user thus require, the (or )
LED will light up and all the banks necessary in order to reach the
set power factor will be switched into service in as little time as
possible (compatibly with the capacitor discharge time T1).
The controller automatically adjusts to the direction of circulation
of the current drawn from the C.T.
If the current to the C.T. secondary winding falls below 200mA,
the controller will disconnect all the banks and the display will
show“COS” in turn with flashing “.-.-.” .
It will go into standby until a current exceeding that value is
restored.
The REGO reactive power controller may be connected to the
mains according to three different configurations (see diagram in
Fig. 3 - Page 3).
In this configuration (default) the C.T./5A is positioned on
phase R(L1) and the reference voltage is drawn from the
line voltage between phases S(L2) and T(L3). This is the
classic varmetric connection. This is the type of
connection utilized in automatic
power factor correction systems.
In this configuration the C.T./5A is on phase R(L1)
whereas the reference voltage is the line voltage
between phase R(L1) itself and phase S(L2).
if the cyclical direction of the power supply phases is
not known, configuration FF2 may give rise to an error in the
power factor measurement.
In this configuration the C.T./5A is on phase R(L1)
whereas the reference voltage is the phase-neutral
between phase R(L1) itself and the neutral N. Use this
configuration only for single-phase networks.
The C.T. must have a value:
– at the primary winding: equal to or relatively higher than the
maximum current absorbed by the load downstream from
the C.T. itself.
– at the secondary winding: 5A.
– The C.T. must be connected both upstream from the power
factor correction system and upstream from the load (See
Fig.5 positions a and b).
– The C.T. must never be directly connected on the load power
supply line (See Fig.5 position c) or directly on the power
factor correction line (See Fig.5 position d).
– In the FF1 connection configuration the C.T. must be
connected to the phase not used for the voltmetric supply to
the controller. If the controller is installed on a DUCATI
energia power factor correction system the C.T. phase must
be L1/R; see Fig.5 position and ).
2) SAFETY
WARNING
DUCATI ENERGIA
3) GENERAL DESCRIPTION
This automatic power factor correction controller was
manufactured and tested in conformity with current standards and
left the factory in perfect conditions of technical safety.
In order to maintain these conditions and ensure safe operation,
the user must abide by the instructions provided herein.
This device must be installed by qualified personnel in
accordance with the equipment regulations currently in
force in order to prevent injury or damage to
persons or property.
Maintenance or repair work
must be managed solely by authorized personnel.
Before undergoing any maintenance or repairs,
the device must be disconnected from all power sources.
s.p.a. disclaims all liability for any injury or
damage caused to persons or property as a result of improper use
of its products.
In view of the continuous evolution of our technology, we reserve
the right to change the specifications contained herein without
notice. The catalogue descriptions and data shall thus have no
contractual validity.
The REGO reactive power controller is designed to control and
regulate capacitor banks. It operates on the basis of
microprocessor technology, which provides accurate, reliable
power factor measurements. The power factor is controlled by
switching capacitor banks according to the reactive power
requirements of the load: if more than one step is needed in order
to reach the cos. required, REGO activates all the steps
necessary with a delay between one and the other equal to the set
time “T2”. The number of switching operations is thereby reduced
and where the capacitor banks have an equal value, they will be
used n a homogeneous manner.
The controller features both automatic and manual operating
modes. In addition, the powers associated with the steps can be
automatically acquired thanks to the “Auto Acquisition” function.
At the end of this procedure, moreover, the controller also
automatically selects the most appropriate switching sequence.
Alternatively a user program, chosen among the numerous
available options, can be manually set. Thanks to this function the
controller will be able to intervene and correct the system PF more
quickly: in fact, on the basis of real-time power measurements and
the known powers associated with individual steps, it can
calculate how much reactive power is needed to bring the cos. to
the desired value and switch on all the necessary steps together
(with just a settable delay “T2” between one and the next), as
noted previously.
The 7- or 12-step model also features an Rs485 serial interface
with
standard “DUCATI” communication protocol which enables the
user to
connect the device to a network of instruments and read the
measured data remotely from a connected PC.
REGO also offers other useful functions, such as panelboard
temperature measurements for controlling an external cooling fan
(in
the 7- or 12-step model), a series of protections and associated
alarms to safeguard the capacitor banks and guarantee efficient
system performance, the possibility of counting the number of
switching operations of a certain step to prevent possible
downtimes due to failures and thereby increase the system’s
reliability, and other functions as well.
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