POWER FACTOR CONTROLLER - Westech Electric Limited
Contents
1. 4 CONNECTION DIAGRAM Phase Neutral Connection Phase Neutral Connection Tee 1 oa 22 5 e 7 e e Jio n i2 ia TT pi OTTA T C1 a K a c1 am c aR LEA L i J fir ie ca sooo l TE N m N B ie L2 L2 u K E ji uy i Ce k 1 2A Alarm Relay k 1 2A eo a i Phase Phase Connection Phase Phase Connection s lelles TTI MM ALE fot i zjale je 7 e E 7 8 910 fi 12 13 14 a a T 6A L 7 a L2 N 4 ul K L is i e L2 E k 1 2A Alarm Relay u K _ 5 6 1J2 3 4 11 12 3A For RG T in 144x144 case For RG T in 96x96 only RG 6T case Warnings a Connection of circuit breaker is highly recommended between the network and the power supply input of the device 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 the 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 of opera2. 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 different settings 13 DOWN Button To move down in the Menu 14 Automatic Cik 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 off 18 Insufficient Compensation Light This warning light is ON when insufficient 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 108
3. DOWN buttons When targeted value is displayed it is stored by pressing SET button and RG T returns to its normal operating mode 200000000000 POWER FACTOR CONTROLLER 5 9 Protection of Capacitor Steps Against Over Voltage This is a selectable function either O OF Over Voltage Protection Off or an Over Voltage value between 240 275V can be selected If Over Voltage occurs when Over Voltage Value is selected between 240 275V then all the capacitor steps switch off OVER VOLTAGE LED turns on and alarm relay activates And if RG T is on Manuel Mode it switches to Automatic Mode If 0 OF is selected Then over voltage protection is disabled Note For over voltage values of RG T with 380 415 VAC please kndly cheele technical specifiations on page 4 Setting can be made as followed Push SET button 3 seconds and enter SET Menu Display 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 000000000000 POWER FACTOR CONTROLLER oe Push SET button to store the selected value RG T returns to normal operating mode 5 10 Display of Cosy Value When RG T is in Manual Operating Mode Cos value and inductive capacitive state is always disp
4. 5 10000 Between 2 sec 1800 sec 240 275 V Selectable Un 220 230 240 V AC 410 480 V Selectable Un 380 400 415 V AC 105 140 V Selectable Un 100 110 V AC Cosep 1 00 ind Step Time 7 sn Program PS5 C k 0 05 CT Ratio 5 RG 12T max 12 RG 8T max 8 RG 6T max 6 RG 5T max 5 Output Contact No Volt Feature Setting Range Time Delay Over Voltage Values Factory Set Values Number of Steps Ambient Temperature 5 C 55 C Display 4 Digit Red Display Equipment Protection Class Double Insulation Class I C Wire Section For Terminal Block 25 mme Terminal Block Protection Class IP00 Protection Class IP40 alles Socket terminals with screw Type PR16 Type PR1 ly RG 6T Switchboard cut out 1397139 e ype PRIS Ony HG61 Weight 0 8 kg These supply voltages are adjusted upon request 10 DIMENSION 1K N l 7 8 Type PR16 ld yo B 121 34 5 k ee 67 143 79 70 s Type PR19 90 A2936 Rev 1
5. Over Voltage 4 V AC 6 1 2 Insufficient 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 t sec 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 Coso The target Cos value 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 defined as 1 25xQ 4 value Switching operation occurs out of this region P adjusted value 6 3 Adjustable Step Switching Time Step switching on off delay time can be adjusted between 2 sec 1800 sec Warning Shorter time than above range can lead damage in capacitors and conductors If capacitor banks have not 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 different program modes which determines the power ratio sequence of the capacitor steps PS1 selection gt 1 1 1 1 PS2 selection gt 1 2 2 PS3 selection gt 1 2 4 PS4 selection gt 1 2 4 8 PS5 selection gt may be all of the aboves 2 14 18 6 4 1 RG T Capacitor Sequence Ex
6. POWER FACTOR CONTROLLER RG T 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 1 Maintenance installation and operation of RG T must be performed only by the qualified electricians Disconnect power before working on the equipment Do not operate RG T undervoltage Do not open the RG T s housing There are no user servicable parts inside it RG T is connected to the network by means of a current transformer Do not disconnect the current transformer terminals if you disconnect them be sure to short circuit or connect them to another parallel load having sufficiently low impedance In case of failure dangerously high voltage at the secondary side of current transformer may cause an electric shock Do not use this product for any other purpose than its original task When the device is connected to the network do not remove the front panel Do not clean the device with solvent or the like Only clean with a dried cloth Verify correct terminal connections when wiring 0 Electrical equipment should be serviced only by your competent seller 1 Only for rack panel mounting 2 No responsibility is assured by the manufacturer or any of its subsidiaries for any consequences rising out of the use of this material 2 GENERAL P
7. amples 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 first by a maximum amount equal to the total of the preceding capacitor steps value So the first step value will be the smallest one and the following steps must be the multiplies of the first step Example If the first capacitor power is 5 kVar the capacitor power sequence of the following capacitors are as followed PS1 selection gt 5 5 5 PS2 selection gt 5 10 10 PS3 selection gt 5 10 20 PS4 selection gt 5 10 20 40 40 PS5selection gt may be all of the aboves POWER FACTOR CONTROLLER RG T Two different switching program is supported by RG T a Rotational Switching This switching program is rotational between equal steps in the clockwise direction and this switching program is rotational to ensure 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 different rotational switching program options PS1 PS2 PS3 PS4 b Linear Operation The switching program begins always from the first step to the last one in both switching on and off mode The advantage of this switching program is the possibility of a large selection of capacitor steps conform to the st
8. e 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 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 off 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 first 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 Please look at the back label Operating Voltage Range AU 0 9 1 1 xUn Operating Current Range Al 50 mA 5 5A Rated Frequency 50 Hz 60 Hz Measuring Class 1 1digit V l cos 2 1digit W VAr VA Power Consumption Current lt 2 VA Voltage 3 VA 10 VA 3 A 750 VA NO Contact In case of power failure longer than 200 msec all capacitor steps are disconnected automatically Manual C k Setting 0 02 1 0 Cos Setting 0 85 ind 1 00 CT Ratio
9. eans Sesesea eens of UP DOWN buttons Pro9 symbol is RoctaT displayed C092 AF Switching Program is selected by pressing SETbutton Previously vo em selected value is shown on the display smu A value between PS1 PS5 is selected by POWER FACTOR CONTROLLER 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 Display C k light is selected by means of UP DOWN buttons C symbol is 855664586868 displayed RG 12T Manual C k adjustmentis selected by pressing F SET button Previously manually selected or automatically calculated C k value is shown a 0 on the display na Aa 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 POWER FACTOR CONTROLLER RG T 5 8 Selection of Current Transformer Primary Value By pressing SET button 3 seconds SET Menu is started gt Display 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 Avalue between 5 10000 is adjusted by using UP
10. ep 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 off the unused capacitor steps is eliminated As a result compensation system is used more effective and efficient If step number is not selected RG T makes the compensation according to the factory set step number which is max available output as defined on the front panel 6 6 C k Setting The C k value is a threshold value for switching on off the capacitor steps C k is the value obtained by dividing first step capacitor power C to the Current Transformer Ratio k This value is measured and calculated by RG T automatically or this value 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 off 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 lt 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 pre stored value in the memory The formula to calculate the C k value is Q Power of the first step capacitor kVar Q Clk k k Current Tran
11. g the Energy Flow Direction RG T has four quadrant measuring and operation feature So it is able to sense the energy flow direction and correcting itself for right compensation 6 8 Current Transformer CT Selection Always a separate CT must be 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 Coso Current and Voltage phase connection are not correct 7 2 Insufficient Compensation The power value of the capacitor steps may decreased by time The fuses which are connected to the capacitors may have been out of order The power of the capacitor steps may have been insufficient to compensate the system In this case user must increase the capacitor power 7 3 Over Compensation This occur 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 voltag
12. inks during this mode If Automatic Mode is selected AUTO MAN light is continuouslly ON during this mode POWER FACTOR CONTROLLER 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 is 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 is 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 Cos Adjustment By pressing SET button 3 seconds SET Menu is started gt Display Cosy light is selected by using UP and DOWN buttons COS symbol is displayed 068686588888 RG 12T 3 Cos adjustment is selected by pressing 4 SET button Previously adjusted value F y is shown at the display E EA nae rA A value between 0 85 1 00 is adjusted f oy by using UP DOWN buttons POWER FACTOR CONTROLLER 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 Adjustmen
13. layed When Cos value is negative the system is capacitive and if Cos value is positive the system is inductive In Automatic Operating Mode system s present Coso value and ind cap state may be displayed by selecting the Cos light 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 Definition Coso is defined Displacement Power Factor and relative to the fundamental harmonic only PF is defined Total Power Factor and relative to the all harmonics including fundamental harmonic n a system without harmonics PF and Cosq are equal to each other Attention The difference between coso and PF values does not mean that voltage harmonics which results to problems in systems are high on the network 5 12 Displaying Voltage and Current RMS Values When RG T is in Automatic Operating Mode AUTO MAN light is ON V light is selected RMS Voltage V value is displayed If Hight is selected RMS Current I value 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 W light is selected b
14. o 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 Manuel 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 4 Coso Light 9 CTR VAr Light By pressing SET button 3 seconds you enter to Menu and Current Transformer Ratio adjustment 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
15. ower 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 microcontroller relay designed for above application in 144x144 and 96x96 only RG 6T case for flush mounting with rear plug in connectors In addition it displays the system s Coso in Automatic Operating Mode RG T displays the RMS value of Voltage V Current Active Power W Reactive Power VAr and Apparent Power VA of measuring phase 3 FRONT PANEL SPECIFICATIONS rc Automatic C k Setting L POWER FACTOR CONTROLLER On the front panel of RG T there are warning lights display and 3 buttons for settings 3 1 Buttons and Lights 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 By pressing SET button 3 seconds Cos Adjustment can be made by selecting this light Refer to 5 3 In Automatic Mode when Cos light is selected by pressing UP and DOWN buttons system s Cos and ind cap state is displayed Refer t
16. sformer Ratio CTR Example Let the power C of the first 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 different C and k values are as followed CTR Power of Capacitor Step kVar kK C 2 5 5 10 12 5 15 20 25 30 40 50 60 100 30 5 0 42 0 83 50 5 0 25 0 50 1 00 75 5 0 17 0 33 0 67 0 83 1 00 100 5 0 13 0 25 0 50 0 63 0 75 1 00 150 5 0 08 0 17 0 33 0 42 0 50 0 67 0 83 1 00 200 5 _ 0 06 0 13 0 25 0 31 0 38 0 50 0 63 0 75 1 00 300 5_ 0 04 0 08 0 17 0 21 0 25 0 33 0 42 0 50 0 67 0 83 1 00 400 5 0 03 0 06 0 13 0 16 0 19 0 25 0 31 0 38 0 50 0 63 0 75 500 5 0 05 0 10 0 13 0 15 0 20 o 25 0 30 0 40 0 50 0 60 1 00 600 5 0 08 0 10 0 13 0 17 0 21 0 25 0 33 0 42 0 50 0 83 800 5 0 06 0 08 0 09 0 13 o 16 0 19 0 25 0 31 0 38 0 63 1000 5 0 05 0 06 0 08 0 10 0 13 0 15 0 20 0 25 0 30 0 50 1250 5 0 05 0 06 0 08 o 10 0 12 0 16 0 20 0 24 0 40 1500 5 0 05 0 07 0 08 0 10 0 13 0 17 0 20 0 33 2000 5 0 05 9 06 0 08 0 10 0 13 0 15 0 25 2500 5 0 05 0 06 0 08 0 10 0 12 0 20 3000 5 0 05 0 07 0 08 0 10 0 17 4000 5 0 05 0 06 0 08 0 13 6 7 Sensin
17. t By pressing SET button 3 seconds SET Menu is started AULD Display TIME light is selected by means of UP DOWN buttons 066660606605 While TIME light is ON t On 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 OF symbol is displayed by means of UP DOWN buttons and time delay adjustment for disconnection of capacitor steps to POWER FACTOR CONTROLLER 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 ALG Displa STEP light is selected by means of UP DOWN buttons StEP symbol is displayed STEP number adjustment is selected by pressing lt 666666660606 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 stored by pressing SET button and RG T returns to its normal operating mode POWER FACTOR CONTROLLER 5 6 Switching Program Selection By pressing SET button 3 seconds SET Menu is started Display PROGRAM light is selected by m
18. ting mode are kept in memory even if the device is switched off 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 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 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 valid for switching on off 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 off manually Mode selection is done as followed By pressing SET button 3 seconds SET Menu is started Display vV AUTO MAN light is selected by using UP DOWN buttons Avt symbol is displayed AUTO MAN setting is selected by pressing SET button If the device is in Manuel Mode A OF symbol is displayed If the device is in Automatic Mode f amp n symbol is displayed Automatic Mode A amp n or Manual Mode A QF 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 bl
19. y means of UP DOWN buttons and system s Active Power value is displayed This option is disable in Manual Operating Mode 5 14 Display of Reactive Power VAr Value When RG T is in Automatic Operating Mode AUTO MAN light is continuously ON VAr light is selected by means of UP DOWN buttons and system s Reactive Power value is displayed This option is disable 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 VA light is selected by means of UP DOWN buttons and 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 neutral voltage of the L1 phase exceeds or equals to preset Over Voltage Value between 240 275V 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 off 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 off and RG T continues to compensation Ay A VAC B VAC AU eee Normal Voltage gt a Over Voltage 3 sec A Selected Over Voltage B Selected
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