Entes RG-T User manual

1. INTRODUCTION
1.1 About User Manual
This User Manual is designed to help you for quick installation of RG-T. Before
installation and operation, please read this section very carefully.
1.2 Precautions for Safe Use and Installation
- Failure to follow those instructions will result in death or serious injury.
- Disconnect all power before working on equipment.
- When the device is connected to the network, do not remove the back panel.
- Do not try to clean the device with solvent or the like. Only clean the device
with dried cloth.
- Verify correct terminal connections when wiring.
- Electrical equipment should be serviced only by your component seller.
- Only for rack panel mounting.
- An F type fuse must be used and its current limit value must be 6A.
- No responsibility is assured by ENTES A.S or any of its subsidiaries
for any consequences arising out of the use of this material.
2. GENERAL
Power Factor Controllers are used for measurement and control of power
factor control units for central reactive power compensation. The Power Factor
measured by RG-T is compared with the set point values and in order to provide
necessary compensation, Power Factor Controller switches capacitor banks
ON and OFF automatically. RG-T is a microcontroller relay, designed for above
application in 144x144 case for ush mounting with rear plug-in connectors.
In addition to displaying the system’s Cosjin Automatic Operating Mode, RG-T
displays the RMS values of Voltage(V) and Current (I), Active Power (W), Reactive
Power (VAr) and Apparent Power (VA) of measuring phase.
3. FRONT PANEL SPECIFICATIONS
On the front panel of RG-T, there are warning lights, display and 3 buttons for settings.
3.1 Buttons and Lights
1. 1,2,.........,12 : Shows the status of each capacitor steps.
2. SET Menu : Shows the Menu options that correspond to the lights.
3. AUTO/MAN Light : If this light is continuously ON, RG-T is in Automatic Mode. If
it is blinking, RG-T is in Manual Mode. By pressing SET button 3
seconds, you enter to Menu and change operating Mode .
(Refer to: 5.1)
4. CosjLight :
By pressing SET button 3 seconds ; Cosj Adjustment can be made
by selecting this light. (Refer to: 5.3).
In Automatic Mode, when Cosjlight is selected by pressing UP and
DOWN buttons, system’s Cosj and ind/cap state is displayed.
(Refer to: 5.10)
5. TIME/PF Light : By pressing SET button 3 seconds; you enter to Menu and Step
Time adjustment is made by selecting this light. (Refer to: 5.4)
In Automatic Mode, when this light is selected by pressing UP and
DOWN buttons, system’s Power Factor is displayed. (Refer to: 5.11)
6. STEP/V Light : By pressing SET button 3 seconds; you enter to Menu and Step
Number adjustment is made by selecting this light. (Refer to:5.5)
In Automatic Mode, when this light is selected by pressing UP and
DOWN buttons phase voltage (V) is displayed. (Refer to:5.12)
7. PROGRAM/I Light : By pressing SET button 3 seconds; you enter to Menu and Power
Sequence adjustment is made by selecting this light. (Refer to:5.6)
In Automatic Mode, when this light is selected by pressing UP and
DOWN buttons phase current (I) is displayed (Refer to:5.12)
8. C/k - W Light : By pressing SET button 3 seconds; you enter to Menu and Manual
C/k adjustment is made by selecting this light.(Refer to:5.7)
In Automatic Mode when this light is selected by pressing UP and
DOWN buttons, system’s Active Power (W) is displayed.
(Refer to: 5.13)
9. CTR - VAr Light : By pressing SET button 3 seconds; you enter to Menu and Current
Transformer Primary Value is made by selecting this light.
(Refer to:5.8)
In Automatic Mode when this light is selected by pressing UP and
DOWN buttons, system’s Reactive Power (VAr) is displayed.
(Refer to: 5.14)
10. Over V. /VA Light : By pressing SET button 3 seconds; you enter to Menu and
Protection of Capacitor Steps Against Over Voltage function is made
by selecting this light. (Refer to:5.9)
In Automatic Mode when this light is selected by pressing UP and
DOWN buttons, system’s Apparent Power (VA) is displayed.
(Refer to: 5.15)
11. UP Button : To move up in the Menu.
12. SET Button : Enter button for dierent settings and values.
13. DOWN Button : To move down in the Menu.
14. Automatic
C/k Setting : Automatical C/k adjustment is started by pressing UP and DOWN
buttons together at the same time. (Refer to:5.2)
15. C+ Light : This light is ON when RG-T switches capacitor steps on.
16. NORMAL Light : This light is ON when the targeted compensation is achieved.
17. C- Light : This light is ON when RG-T switches capacitor steps o.
18. Insucient
Compensation
Light : This warning light is ON when insucient compensation occurs.
(Refer to:6.1.2)
19. Over
Compensation
Light : This warning light is ON when over compensation occurs.
(Refer to:6.1.3)
20. Over Voltage
Light : This warning light is ON when over voltage occurs. (Refer to:6.1.1)
21. K (Kilo) Light : When this light is ON displayed value must be multiplied by 1000.
22. M (Mega) Light : When this light is ON displayed value must be multiplied by 106.
4. CONNECTION DIAGRAM
Warnings:
a) Connection of a circuit breaker between the network and the power supply
input of the device is highly recommended.
b) Circuit breaker must be in close proximity to the device.
c) Circuit breaker must be marked as the disconnecting device for the equipment.
d) All used fuses must be FF type and the current values of the fuses must be
2A, 3A and 6A.
POWER FACTOR CONTROLLER
RG-T

5. CONTROLS AND MENU OPERATIONS
All settings are made by Menu. The set values except operating mode are kept in memory
even if the device is switched o.When it is switched on, it starts compensation with
the values stored in the memory in Automatic Operating Mode. After entering Menu by
pressing SET button for 3 seconds and if you don’t make any adjustments during 20 seconds
,RG-T operates with the previously stored values.
To quit Menu without any storing operation, UP or DOWN buttons are pressed
until the ESC symbol is displayed and then SET button is pressed.
The details of controls and adjustments are explained in the following sections.
5.1 Selection of Operating Mode(Automatic / Manual Mode )
Two Operating Modes are available for switching on/o the capacitor steps.
1) Automatic Operating Mode: The capacitor steps are controlled by RG-T, automatically.
2) Manual Operating Mode: The capacitor steps are switched on/o, manually.
Mode selection is done as followed.
By pressing SET button 3 seconds SET Menu is started.
AUTO/MAN light is selected by using
UP-DOWN buttons. symbol is
displayed.
AUTO/MAN setting is selected by pressing
SET button. If the device is in Manual Mode,
symbol is displayed.If the device is in
Automatic Mode, symbol is displayed.
Automatic Mode ( ) or Manual Mode
() is selected by using UP-DOWN buttons.
When targeted operating mode is displayed, it is selected by pressing
SET button. If Manual Mode is selected, AUTO/MAN light starts blinking
and blinks during this mode.If Automatic Mode is selected, AUTO/MAN
light is continuouslly ON during this mode.
5.1.1 Switching of the Capacitor Steps Manually
When RG-T is in Manual Mode, capacitor steps are connected by pressing UP button.
Each time UP button is pressed, C+ light turns ON and one step is connected accordingly;
NORMAL light will be ON after the connection of the step. This operation must be repeated
to connect more steps.
Capacitor steps are disconnected by pressing DOWN button. Each time UP button
is pressed, C- light turns ON and one step is disconnected after a delay time; NORMAL
light will be ON after the disconnection of the step.This operation must be repeated to
disconnect more steps.
5.2 Automatic C/k Adjustment
C/k adjustment is started by pressing UP-DOWN buttons
together.
5.3 CosjAdjustment
By pressing SET button 3 seconds, SET Menu is started.
Cosjlight is selected by using UP and
DOWN buttons. COS symbol is
displayed
Cosjadjustment is selected by
pressing SET button. Previously
adjusted value is shown at the
display.
A value between 0.85-1.00 i s
adjusted by using UP-DOWN
buttons.
When targeted value is displayed, it is strored by pressing SET button
and RG-T
returns to its normal operating mode.
5.4 Step Time Adjustment
By pressing SET button 3 seconds, SET Menu is started.
TIME light is selected by means of
UP-DOWN buttons.
While TIME light is ON, t 0n symbol is
displayed by means of UP-DOWN buttons
and time delay adjustment for connection
of capacitor steps to system is selected by
pressing SET button.
While TIME light is ON, t 0F symbol
is displayed by means of UP-DOWN
buttons and time delay adjustment for
disconnection of capacitor steps to system
is selected by pressing SET button.
A value between 2-1800 sec. is
adjusted by using UP-DOWN buttons.
When targeted value is displayed, it is stored by pressing SET button
and RG-T returns to its normal operating mode.
5.5 Step Number Selection
By pressing SET button 3 seconds, SET Menu is started.
STEP light is selected by means of
UP-DOWN buttons. StEP symbol is
displayed.
STEP number adjustment is selected by
pressing SET button.Previously selected
value is shown on the display
A preferred step number is selected by
means of UP-DOWN buttons.
When targeted value is displayed, it is red by pressing SET button and
RG-T returns to its normal operating mode.
5.6 Switching Program Selection
By pressing SET button 3 seconds, SET Menu is started.
PROGRAM light is selected by means
of UP-DOWN buttons. symbol is
displayed.
Switching Program is selected by
pressing SETbutton. Previously selected
value is shown on the display.
A value between PS1-PS5 is selected by
using UP-DOWN buttons.
When targeted program is displayed, it is stored by pressing SET button
and RG-T returns to its normal operating mode.
5.7 Selection of C/k Value by the User
By pressing SET button 3 seconds, SET Menu is started.
C/ k light is selected by means of
UP-DOWN buttons. symbol is
displayed.
Manual C/ k adjustment is selected by
pressing SET button. Previously manually
selected or automatically
calculated C/ k
value is shown on the display
A value between 0.02-1 is selected by
using UP-DOWN buttons.
When targeted value is displayed, it is stored by pressing SET button and
RG-T returns to its normal operating mode.
POWER FACTOR CONTROLLER
RG-T

5.8 Selection of Current Transformer Primary Value
By pressing SET button 3 seconds, SET Menu is started.
CTR light is selected by means of UP-
DOWN buttons. Ct symbol is displayed.
Current Transformer Primary Value is
selected by pressing SET button. Previously
selected CTR value is shown on the display.
A value between 5--1 0 0 00 is adjusted
by using UP-DOWN buttons.
When targeted value is displayed, it is red by
pressing SET button and RG-T returns to its normal operating mode.
5.9 Protection of Capacitor Steps Against Over Voltage
This is a selectable function, either O OF (Over Voltage Protection O ) or an Over Voltage
value between 410-480V can be selected. If “Over Voltage” occurs when Over Voltage Value is
selected (between 410-480V), then all the capacitor steps switch o, OVERVOLTAGE LED turns
on and alarm relay activates. And if RG-T is on Manual Mode, it switches to Automatic Mode.
If 0 0F is selected; Then over voltage protection is disabled.
Setting can be made as followed.
Push SET button 3 seconds and enter SET Menu.
Scroll to“OVER V.”by UP/DOWN buttons.
OV is displayed.
Push SET button for Over Voltage
Protection setting. Either O OF or
preset over voltage value is displayed.
Select either O OF to cancel Over
Voltage Protection Function or select
a voltage value by UP/DOWN buttons.
Push SET button to store the selected value. RG-T returns to normal
operating mode.
5.10 Display of CosjValue
When RG-T is in Manual Operating Mode, Cosjvalue and inductive/capacitive state
is always displayed. When Cosjvalue is negative,the system is capacitive and if Cosj value is
positive, the system is inductive.In Automatic Operating Mode, system’s present Cosj value
and ind./cap. state may be displayed by selecting the Cosjlight, by means of UP-DOWN
buttons.
5.11 Display of Power Factor (PF) Value
When RG-T is in Automatic Operating Mode (AUTO/MAN light is continuouslly ON), PF light
is selected by means of UP-DOWN buttons and sytem’s Power Factor value is displayed.
This option is disabled in Manual Operating Mode.
Important Denition:Cosjis dened as Displacement Power Factor and is relative to
the fundamental harmonic only. PF is dened Total Power Factor and is relative to the all
harmonics including fundamental harmonic. In a system without harmonics, PF and Cosj
are equal to each other.
Attention: The dierence between cosjand PF values does not mean that voltage
harmonics, which leads to problems in systems, are high on the network.
5.12 Displaying RMS Values of Voltage and Current
When RG-T is in Automatic Operating Mode (AUTO/MAN light is ON) and V light is
selected, RMS value of Voltage (V) is displayed.
If I light is selected, RMS value of Current (I) is displayed. Displayed current and voltage
values are of the phase where CT is connected. These options are disabled in Manual
Operating Mode.
5.13 Display of Active Power (W) Value
When RG-T is in Automatic Operating Mode (AUTO/MAN light is continuouslly ON) and W
light is selected by means of UP-DOWN buttons, system’s Active Power value is displayed.
This option is disabled in Manual Operating Mode.
5.14 Display of Reactive Power (VAr) Value
When RG-T is in Automatic Operating Mode (AUTO/MAN light is continuouslly ON) and VAr
light is selected by means of UP-DOWN buttons, system’s Reactive Power value is displayed.
This option is disabled in Manual Operating Mode.
5.15 Display of Apparent Power (VA) Value
When RG-T is in Automatic Operating Mode (AUTO/MAN light is continuouslly ON) and VA
light is selected by means of UP-DOWN buttons, system’s Apparent Power value is displayed.
This option is disable in Manual Operating Mode.
6. DESCRIPTION
6.1 Errors and Warnings
The Alarm Relay is activated if the following“errors” occur.
6.1.1 Over Voltage
If the phase to phase voltage of the L1 phase exceeds or equals to preset Over Voltage Value
(between 410-480V), then RG-T waits for 3 seconds. At the end of 3 seconds if there is still
over voltage, then OVER VOLTAGE LED turns on. Depending on selection of Over Voltage
Protection Function (Pls. refer to 5.9), RG-T switches o all the capacitor steps or continues
to compensation.
Over Voltage error disappears, if set Over Voltage value decreases by 4VAC.
In this case, OVER VOLTAGE LED turns o and RG-T continues to compensation.
6.1.2 Insucient Compensation
When target power factor is not reached although all the capacitor steps have been
connected, INSUFFICIENT COMPENSATION’s light is ON and the Alarm Relay is activated.
6.1.3 Over Compensation
If the system is still capacitive although all the capacitor steps are disconnected, OVER
COMPENSATION light is ON and Alarm Relay is activated.
6.2 Target Cosj
The target Cosjvalue can be adjusted between 0.85-1.00 inductive. RG-T connects
capacitors in order to bring system’s power factor to the adjusted value. The adjusted value
is dened as 1.25xQC1 value.Switching operation occurs out of this region.
6.3 Adjustable Step Switching Time
Step switching on/o delay time can be adjusted between 2 sec.-1800 sec.
Warning: Shorter time than above range can lead to damage in capacitors and
conductors.
If capacitor banks do not have discharge coils, the delay time must be selected over
14 seconds. The selected delay time must not be shorter than the manufacturer’s
instruction.
6.4 Switching Program Selection
RG-T has 5 dierent program modes which determines the power ratio sequence of the
capacitor steps:
PS1 selection ===> 1: 1: 1:.......: 1
PS2 selection ===> 1: 2: 2:.......: 2
PS3 selection ===> 1: 2: 4:.......: 4
PS4 selection ===> 1: 2: 4: 8:...: 8
PS5 selection ===> may be all of the above
6.4.1 RG-T Capacitor Sequence Examples
The power ratio selection between capacitor steps is very important. When choosing the
ratio beetween the power of capacitor steps , the rating of each capacitor step value may
exceed that of the rst by a maximum amount equal to the total of the preceding capacitor
steps value. So the rst step value will be the smallest one and the following steps must be
the multiplies of the rst step.
Example: If the rst capacitor power is 5 kVAr, the capacitor power sequence of the
following capacitors are as followed:
PS1 selection ===> 5. 5: 5:...............: 5
PS2 selection ===> 5: 10: 10:...........: 10
PS3 selection ===> 5: 10: 20:...........: 20
PS4 selection ===> 5: 10: 20: 40:.....: 40
PS5selection ===> may be all of the above
POWER FACTOR CONTROLLER
RG-T

Two dierent switching programs exist in RG-T :
a)Rotational Switching : This switching program is rotational between equal steps
in the clockwise direction. This ensures that the capacitor
switching cycles are uniformly distributed over all steps and to
provide minimum switching steps for maximum service life
time of the system.
There are 4 dierent rotational switching program options.
(PS1,PS2,PS3,PS4)
b) Linear Operation : The switching program begins always from the rst step
to the last one in both switching on and o mode. The
advantage of this switching program is the possibility
of a large selection of capacitor steps conform to the step
function ratio rule as explained above. The maximum possible
ratio is “x:2x:4x:8x:16x....”.
This switching program is selected by PS5 option.
6.5 Step Number Selection
By selecting the step number, the extra time is spent connecting on/o the unused
capacitor steps is eliminated. As a result, compensation system is used more eectively and
eciently. If step number is not selected, RG-T makes the compensation according to the
factory set step number which is max. available output as dened on the front panel.
6.6 C/k Setting
The C/k value is a threshold value for switching on/o the capacitor steps. C/k is the value
obtained by dividing rst step capacitor power “C” to the Current Transformer Ratio “k”. This
value is measured and calculated by RG-T automatically, or can be entered manually. After
pressing the UP and DOWN buttons together, the C/k value is calculated and stored in one
step switching on/o time interval. The further compensation controls are made with this
stored value. In case of instantaneous change of the system’s load, measuring process will
be renewed. RG-T will stop the measuring after 10 attempt. It means that the C/k value
couldn’t be measured due to the instability of the system’s load. In this case, compensation
control will continue with the previously stored value in the memory.
The formula to calculate the C/k value is :
c/K=
QQ: Power of the rst step capacitor (kVar)
k:Current Transformer Ratio.(CTR)
K
Example :
Let the power (C) of the rst step capacitor is 5 kVAr and the Current Transformer Ratio (k) is
100/5. Then the C/k value is:
C/k = 5/(100/5)=0.25
C/k value for the dierent C and k values are as followed :
6.7 Sensing the Energy Flow Direction
RG-T has four quadrant measuring and operation feature. So, it is able to sense the energy
ow direction and to correct itself for right compensation.
6.8 Current Transformer (CT) Selection
A separate CT must be always used for the Power Factor Controller. The wires connecting
CT to Power Factor Controller must be as short as possible and the diameter of wire not less
than 1.5 mm. Since the current information is supplied by CT, the right selection of CT is
very important. The secondary current of the selected CT must comply with the following
current limits for correct measuring.
Minimum=0.05 mA, Maximum=5.5 A (Minimum C/k Ratio must be 0.02)
7. ERROR DESCRIPTIONS
7.1 Wrong Cosj
Current and Voltage phase connections are not correct.
7.2 Insucient Compensation
The power value of the capacitor steps may be decreased by time. The fuses which are
connected to the capacitors may be out of order. The power of the capacitor steps may be
insucient to compensate the system.(In this case, user must increase the capacitor power.)
7.3 Over Compensation
This occurs (especially at weekends, nights etc.) due to capacitive load current drawn by
devices like ballasts, constant steps, etc. The contactor’s contacts switching the capacitor
steps may have stuck to each other due to the instantaneous over current.Unnecessary
capacitor steps may have switched on manually.
7.4 Over Voltage
The phase-neutral voltage of L1 has exceeded the preset Over Voltage Value.
8. EASY INSTALLATION RECOMMENDATION (IMPORTANT NOTICE)
When the load is unstable and varies very quickly, the C/k calculation process may take long time or
in some cases it can not be calculated properly or can be miscalculated which may cause improper
compensation. A practical way to prevent this situation is as followed:
1- Turn on the compensation board without connecting the load current. Only the capacitors
will be in operation in this situation (You can do this by switching o the load current temporarily).
2- Start the C/k calculation process by pressing the UP and DOWN buttons at the same time.
Now , depending on the power of the rst step, C/k value is calculated very accurately by
RG-T. The calculated C/k value will automatically be stored in the memory. You can switch the
load on. This C/k value will be kept in the memory until it is recalculated or changed manually.
9. TECHNICAL SPECIFICATIONS
Rated Voltage (Un) : 415 VAC
Operating Voltage Range(DU) : (0.9-1.1)xUn
Operating Current Range(DI) : 50 mA-5.5A
Rated Frequency : 50 Hz / 60 Hz
Measuring Class : 1% ±1digit (V,I,cosj), 2% ±1digit(W,VAr,VA)
Power Consumption : Current: <2 VA
Voltage: 3 VA- 10 VA
Output Contact : 3 A ,750 VA (NO Contact)
No-Volt Feature : In case of power failure longer than 200 msec.all
capacitor steps are disconnected automatically.
Setting Range : Manual C/k Setting:0.02-1.0
Cosj Setting:0.85 (ind.)-1.00
CT Value:5-10000
CT Seconder 5A
Time Delay : Between 2 sec.-1800 sec.
Over Voltage Values : 410-480 V (Selectable) (Un= 230 V AC )
Factory Set Values : Cosj=1.00(ind.) , Step Time=7 sn.
Program=PS5 , C/k=0.05
CT Ratio =5
Number of Steps : RG12T(max 12) ; RG8T(max 8)
RG6T(max 6) ; RG5T(max 5)
Ambient Temperature : -5°C - 55°C
Display : 4 Digit ,Red Display
Equipment Protection Class : Double Insulation-Class ll ( )
Wire Section (For Terminal Block) : 2.5 mm2
Terminal Block Protection Class : IP 00
Protection Class : IP 40
Connections : Socket terminals with screw
Dimension : Type PR16
Switchboard cut-out : 139x139 mm
Weight : 0.8 kg.
10. DIMENSIONS
ENTES Elektronik Cihazlar Imalat ve Ticaret A.S.
Adr: Dudullu OSB; 1. Cadde; No:23 34776
Umraniye - ISTANBUL / TURKEY
Tel: [phone] Fax: [phone]
E-mail: [email protected] - [e-mail]
Web: www.entes.com.tr - www.entes.eu
POWER FACTOR CONTROLLER
RG-T
A8573 / Rev.1
01.12.2019