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POWER FACTOR CONTROLLER

RG3-12C/CS

3.4 Selection of Proper Switching Sequence

RG312C/CS has 10 different program modes which determines
the power ratio sequence of the capacitor steps.
The switching programs are given in the table.
If the step sequence is selected as in program 02(PS-02), many
identical connection components must be used. When a step
sequence between the 3rd and the 8th one is selected, less
identical connection components will be used. By selecting the
9th connection sequence, different group powers can be achieved.
In this sequence connection, the rating of each capacitor step
value may exceed that of the first by a maximum amount equal
to the preceding capacitor steps value. By using this setting,
less capacitors will be used. When the 10th connection sequence
is selected, RG3-12C/CS will calculate the capacitor step power
values automatically. RG3-12C/CS counts swithing on&off times
of all capacitor steps and so only the most necessary step is
switched on. Thus, maximum service life time of the system
is ensured.

Note: In the 10th program(PS-10), power values and connection

types(except the first step) of the single phase capacitor

steps(r, s, t, rst, oFF) can be set by user. In Auto setup mode

power values of all capacitor steps are measured and

connection types of the capacitor steps are detected by the

device. In all the connection sequences except the 10th one,

only the 1st capacitor step power can be set. All the other

capacitor step values are calculated according to the 1st

capacitor steps power value.

Set the program option suitable for your system in this menu.

Using the

UP/DOWN

buttons, select the Program

(Prog)

menu.

When program menu is displayed, program LED turns on.

SAUE

If you want to leave the setup menu without making any other
changes, press the

ESC

button until

SAVE SEt yES

shows

on the screen. If you want to save the changes, press the

SET

button. If not, press the

ESC

button.

Press the

SET

button to select the switching program.

Enter the desired program number between 01-10 and press the

SET

button.

Using the

UP/DOWN

buttons, enter to another menu option

which you wish to change. If you are not going to change any
more settings, press the

ESC

button.

P R O G R A M

S E Q U E N C E

*10

linear

1.1.1.1................

1.1.2.2................

1.2.2.2................

1.2.3.3................

1.2.4.4.................

1.1.2.4................

1.2.3.4................

1.2.4.8................

Capacitor step values are calculated automatically.

* Recommended switching program.

In order to decrease harmful effects of instant reactive power loads to the
relays and capacitors, delay time (in terms of seconds) for capacitor steps
is entered in this menu.

Switch-on delay time must be set according to system requirement in
order to achieve compensation targets and also to provide long life time
for contactors and capacitors.

3.5.a Switch-On Delay Time Setting

Note: t-on and t-of time periods must be set according to your systems

requirements. If t-on time is set very long, relay can not switch on until

the end of this time period and so target compensation ratios may not

be achieved. If t-on time is set too short, capacitor steps switch on&off

frequently in case of fast load variations and this will shorten the life

time of contactors and capacitors. For this reason, it is very important

to set these time periods according to your systems requirement.

Using the

UP/DOWN

buttons, select the delay time menu

(dELy)