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Thyristor switching PF Controller

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1 Thyristor switching PF Controller
OPERATIONS MANUAL TRPF-02/** Thyristor switching PF Controller TAS Powertek Pvt. Ltd. Corporate Office: W-61, MIDC, Ambad, Nasik , Maharashtra (India) Tel: +91-(253) /

2 NOTE These instructions do not purport to cover all details or variations in equipment, nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchasers purposes, the matter should be referred to our TAS PowerTek Pvt. Ltd. office. The contents of this instruction Manual shall not become part of or modify any prior or existing agreement or relationship. The sales contract contains the entire obligations of TAS PowerTek. The warranty contained in the contract between the parties is the sole warranty of TAS PowerTek. Any statements contained herein do not create new warranties or modify the existing warranty. The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights are reserved.

3 Index Index Page ------------------ 1
Ordering Information Features Specifications Mechanical Dimensions/ mounting Terminal Arrangement Connector Details Front Plate indications & keyboard Various Installation Schemes Control Wiring CT Selection PF compensation Methodology Front LCD Display Method for Keyboard/Display usage Auto and Manual Operation Mode Parameter Editing EDIT: Display EDIT: General EDIT: System EDIT: Communication EDIT: Fault EDIT: Step Recommendations: Thyristor APFC panel APFC panel Commissioning Instructions Before Power Up After Power Up Fault Finding Guidelines Annexure-1: Default Parameter list Annexure-2: TAS-01 Communication Protocols. 63 After Sales Service contact and Sales Outlets - 1 -

4 TRPF-02 /NN /V /S Ordering Information.
NN- Indicates the number of output channels. Here numbers can be 04, 06, 08, 12, 16. V- Indicates rated voltage . 3: here will indicate 415Vac Line-Line. 2: here will indicate 240Vac. Line-N. 1: here will indicate 110Vac. Line-Line. 0: here will indicate 63.5Vac. Line-N. S- Indicates the special functions. N: Indicates no special function. R: Indicates RS-232 port availability. D: Indicates Data Logging capability. RD: Indicates RS Data logging. The type no of the units to be ordered should be mentioned on the Purchase Order. - 2 -

5 Suitable for Thyristorised high speed capacitor switched panel.
Features: Suitable for Thyristorised high speed capacitor switched panel. THD measurements with supply voltage, current and the capacitor current. Various possibilities for bank selection. Including user defined bank values in kVAr. Input sensing either through line to line voltage with a CT or Individual phase with a CT. Programmable PT ratio for HT feedback. Selectable current input range. 1Amp and 5Amp.(CT input) Protection against Over/Under Voltage. Over/Under cap. Amp / THD. Over/Under frequency. + many more. Compensation on fundamental waveform kVAr calculation, with effects of supply frequency and voltage. Digital open emitter output commands of +12Vdc and Digital fault input sensing. Capable of giving correction every cycle of mains waveform. Standard 144 X 144 mm panel flush mounting arrangement. Max depth 75mm. Back side. - 3 -

6 for 415V line to line config:300V to 500V
Specifications: Operating Voltage: for 415V line to line config:300V to 500V for 240V Phase to N config:170V to 300V for 110V line to line config: 79V to 132V for 63.5 Phase to N config: 45V to 76V Current Input: 1A.or 5A. (Load Current full range.) Capacitor current Input: 1A or 5A. 12Vdc/20mA solid state Outputs (open Emitter) for Thyristor switch commands. Short circuit protected outputs. 12Vdc digital input channels for sensing the digital inputs (thyristor step fault f.b.) from thyristor switch. Measurement accuracy: Class-1 Operating temperature 0 to 50°C. Storage temperature -10 to +75°C Output commands models for 4, 6, 8, 12 and 16 output. - 4 -

7 Mechanical Dimensions
70 6 144 135 All Dimensions in mm. Recommended cutout for panel front door is 138mm X 138mm. - 5 -

8 Top Side Connector Arrangement:
Terminal Arrangement. Top Side Connector Arrangement: Fault Feedback Input Terminals. 12Vdc Aux.Input. Aux Output NO contacts. Bottom Side Connector Arrangement: ON/OFF Command Output Terminals. Mains Feedback CT input. Cap.Current Auxiliary Supply / Voltage feedback - 6 -

9 Fault Feedback Terminals:
CONNECTOR DETAILS: Top Side Connectors: Fault Feedback Terminals: Terminals marked with TFB TFBnn and COM. COM: The reference voltage level with respect to this terminal the other digital voltages of +12Vdc are given to TFBnn. TFBnn: The number nn is normally connected to corresponding step number nn thyristor switching fault feedback. These are +12Vdc signals given by thyristor switches whenever these trip due to any fault that is observed in the specific step. Auxiliary Input: Terminals marked with AI & COM. The various functions like: Output Disable / Enable. Mains / Generator Mode change-over. Faults reset. The function out of these is selected through user settable parameter. The Logic’1’ is with +8V to +14Vdc at the input terminal ‘AI’ with respect to ‘COM’ and Logic’0’ is with 0 to +0.5Vdc. Auxiliary Output: Terminals marked with AO & AO. These are Normally Open auxiliary contacts. Maximum contact rating is 0.5Amp/240Vac or 100mA/48Vdc. This is used for getting the outputs control of: Output tripped fault. Indicative + tripped fault. (system fault) Out of Step. (Inadequate compensation) Reset modem (In case of communication failure with GSM modem) The function out of these is selected through user settable parameter. For inductive switching loads like contactor/ relay coils, it is recommended to use the RC snubber circuits for AC and free wheeling diode for DC. The values can be as per coil inductance section. Typically it is R=330/2Watt, C=0.1F/1000V for 240Vac system. - 7 -

10 Bottom Side Connectors: Mains CT Feedback Terminals:
CONNECTOR DETAILS: Bottom Side Connectors: Mains CT Feedback Terminals: Terminals marked with LC + & -. These are connected to secondary of the Mains current feedback CT secondary. The rated secondary can be either 5Amp. or 1Amp. ac. (Selectable by user defined parameter). Capacitor CT Feedback Terminals: Terminals marked with CC. These are connected to secondary of overall capacitor current sensing CT. Rated secondary current can be either 5Amp or 1Amp ac. (User defined parameter). On/Off Command Output Terminals: Terminals marked with OP OPnn and GND. GND: This is the Ground reference terminal. With respect to this terminal, the output commands OPnn reference voltages are given. OPnn: These are the Bank On / Off command terminals. When a specific capacitor bank is to be turned On, it generates output Voltage as +11V to +12Vdc. This is through the solid state switch which has maximum driving capacity of 20mA. Each output is protected for short circuit. Auxiliary Supply / Voltage Feedback Terminals: Terminals are marked with L1 / P and L2 / N. These are used for giving the mains voltage input to the relay. This voltage would be used for Powering up the relay as well as for taking the voltage feedback. 415Vac and 110Vac are considered as line voltages. (across lines of the two phases). 240Vac and 63.5Vac are considered as phase voltages. (across line and Neutral. - 8 -

11 Front Plate Indications and Keyboard.
16Charactor X 2 lines LCD display. RS-232 Serial Communication Port. Soft touch Keypad. - 9 -

12 Scroll/Cursor moment keys
Soft touch Keypad: Scroll/Cursor moment keys Data Entry Key Save Parameter Data Mode selection Right Shift cursor Increment Data / Page. Left Shift cursor Decrement Data / Page. Enter Data / Mode. Select Mode of Operation. Save the Data - 10 -

13 RS-232 serial communication 9 pin D connector:
RXD GND TXD RS-232 cable connection Details: PIN NO PC side Connection CONNECTION TRPF-02 1 NC 2 RXD TXD 3 4 5 GND 6 7 8 9 - 11 -

14 Various Installation Schemes.
Conventional LT side PF improvement system Schematic: L O A D Load CT. Cap. HT side LT side As per this scheme, the load sensing CT is put between the Source and the PF correction Capacitor banks. This is as per the diagram shown above. The voltage feedback is taken from the LT bus system itself. This type of scheme is used when user is interested in maintaining the healthy Power Factor on the secondary side of the transformer. This scheme is preferred with LT consumers of electricity, where the metering is carried out on LT side. Capacitor current feedback is taken from all the capacitor banks that are controlled by the Auto PF controller: TRPF-02. i.e. the capacitor current feedback CT senses the overall current of the capacitor banks in the circuit. - 12 -

15 LT Power Factor compensation with HT side feedback: L O A D
Scheme-2. LT Power Factor compensation with HT side feedback: L O A D Cap. CT. CT / PT HT side LT side As per this scheme, the load sensing CT as well as voltage feedback PT is put at the input of the transformer on HT side. This scheme is preferred with LT consumers of electricity, where the metering is carried out on HT side. Using this scheme gives even the compensation against magnetising current of the transformer. Thus, for HT metering, able to give more accurate results. Capacitor current feedback is taken from all the capacitor banks that are controlled by the Auto PF controller: TRPF-02. i.e. the capacitor current feedback CT senses the overall current of the capacitor banks in the circuit. This feedback is common in all the schemes. The relay has provision to program the HT PT ratio as well as defining the capacitor working voltage. - 13 -

16 Usage of summation CT for usage with Mains / Generator
Scheme-3. Usage of summation CT for usage with Mains / Generator changeover system. L O A D Mains CT. Cap. HT side LT side Generator. In case of system with duel sources of supply, I.e. Supply Grid and Generator. Under such case, the system can be shifted between the two sources. For every source there may be different requirements of max. loading on sources as well as requirements for different target PF settings. With such schemes, a summation CT is used. The changeover between the two sources is informed to TRPF-02 through its Aux. Input port. TRPF-02 is capable of handling such duel settings. Using this scheme gives user an advantage of using a single PF improvement system with either of the source in operation. Capacitor current feedback is taken from all the capacitor banks that are controlled by the Auto PF controller: TRPF-02. - 14 -

17 L O A D TRPF-02 V, I and I-cap feedback Control Wiring:
The control wiring for Measurement section: This is further divided into two types. Quadrature Mode. For 415Vac and 110Vac. In phase Mode. For 240Vac and 63.5Vac. Quadrature Mode: Typical Schematic. L O A D TRPF-02 L2 L CC LC N P OP1—OPnn TFB1--TFBnn L1 L2 L3 P P2 S S2 Thyristorised Switching. MAINS SOURCE N - 15 -

18 L O A D TRPF-02 In Phase Mode: Typical Schematic. MAINS SOURCE L1 L2
P N CC LC L1 L2 OP1—OPnn TFB1--TFBnn L1 L2 L3 P P2 S S2 Thyristorised Switching. MAINS SOURCE N Either of the above specified modes can be selected by the user based on the system requirement. Whats is looked into is that with Quadrature Mode is Voltage across L1 & L2 terminals is the line voltage value as compared to In Phase mode has Phase ‘P’ to Neutral ‘N’ voltage value. Therefore the relay voltage selection should be done according to the mode of operation selected. - 16 -

19 TRPF-02/06/T*/3. Typical Scheme of TRPF-02 with TAS make
Thyristor switches. TRPF-02/06/T*/3. L C + - A I O M T FB 1 2 3 4 6 5 415 Vac. G N D P 12V DC INPUT R B Y 12P GND Thyristor Combi-Pack ZCCP- /03 OUTPUT 2 FLT F/B1 FLT F/B2 FLT F/B3 FLT RST CMD 1. CMD 2. CMD 3. OUTPUT 1 OUTPUT 3 Rph ctrl Yph ctrl Bph ctrl Neutral RESET OUTPUT Thyristor Switch ZCTC- /02 Rph Ctrl Yph Ctrl Bph Ctrl AO FLT F/B CMD - 17 -

20 CT Selection: For Mains Current Feedback:
Normally the Primary current rating of the CT is equal to the maximum capacity of the mains source current. But sometimes, even with source having more capacity, the Load requirements are comparatively small. Under such case its recommended to use the CT rating equal to the maximum known Load current. This will give better results and also gives better accuracy of measurement. The secondary of the CT can either be 5Amp ac or 1Amp ac. The VA rating of the CT should be minimum 3VA, even though the actual VA burden offered by TRPF-02 is less than 0.5VA. This is to take care of longer lead lengths and contact drops. For Capacitor Current Feedback: Here the primary current rating of the CT should be equal to the maximum current that can flow through the PF correction system. The secondary of the CT can either be 5Amp ac or 1Amp ac. The VA rating of the CT should be minimum 1VA, even though the actual VA burden offered by TRPF-02 is less than 0.5VA. General about CT connection: The CT secondary should be brought to TRPF-02 terminals through a terminal block. This block should have arrangement to short the CTs. This is to take care of CTs being left open circuited and thus getting damaged, when TRPF-02 terminals are removed. - 18 -

21 PF Compensation methodology in TRPF-02:
KW. KVAR (Ind) (Cap) PFLOWER. PFUPPER. - KW. PFUPPER & PFLOWER both set as inductive: smallest Capacitor bank KVARX1.5 width. No change band. Capacitor Addition band. Capacitor Removal band. KVAR (Ind) (Cap) PFLOWER. PFUPPER. - KW. PFUPPER as Capacitive & PFLOWER as inductive: smallest Capacitor bank KVARX1.5 width. KW. - 19 -

22 PFUPPER & PFLOWER as Capacitive:
KVAR (Ind) (Cap) PFLOWER. PFUPPER. - KW. PFUPPER & PFLOWER as Capacitive: smallest Capacitor bank KVAR X 1.5 width. KW. No change band. Capacitor Addition band. Capacitor Removal band. All the three conditions specified in the diagram, the four quadrant operation is achieved if “Auto kW polarity” is not activated. If this feature is activated, the TRPF-02 works with only kW +ve two quadrants. Thus, with 4 quadrant operations requirements, Auto kW polarity should be kept off. Typical example of 4 quadrant operation is with “Co-Generation Plants” and “Wind-Power Generation”. But with most conventional consumer applications, only +ve KW is seen, where the Auto kW polarity feature can be kept ON. It can be seen that there are two PF set points to be set in TRPF-02. The Upper and the Lower. TRPF-02 ensures that PFUPPER is never exceeded. Additionally, “No change band” to minimum KVAR band size equal to smallest bank KVAR X 1.5 ensures no hunting during the low KW loading. - 20 -

23 TAS Power Tek TRPF-02-Ver*
Front LCD Display The contrast of the LCD can be adjusted by using the keys The left key will make the contrast darker and right key will make it lighter. The front LCD Display under default condition displays the various parameter readings. There are number of screens that shows the various parameters that are measured or derived. These various screens can be displayed by pressing the Scroll keys. Viz. UP key - DOWN key – Alternately, scrolling of all the screen with user defined interval can also be set by Parameter settings. Power Up Display Screen. (Only for first 1 sec.) TAS Power Tek TRPF-02-Ver* - 21 -

24 COSφ=1.ØØØ INDA Then the unit should display:
Then the unit should display: Display Page: 00 This is the factory set default screen. The “COS=” part is to indicate that the value following that is “Power Factor”. This indicates the PF that is sensed by the unit near the load sensing CT position. i.e. the transformer/ supply grid side. Further three digits are to indicate if PF sensed is Inductive or Capacitive. Inductive is shown by “IND” and Capacitive is shown by “CAP”. TRPF-02 is designed to work with two set points. One group of set points are for Transformer /Supply Grid and other group of set points are for Generator operation. Transformer / Supply Grid operation is indicated by “” and Generator operation is indicated by “”. The last digit on the upper line of display shows the operation mode. TRPF-02 is designed to work in two modes. Viz. Auto mode and Manual mode. Auto mode is indicated by “A” and Manual mode is indicated by “M”. The bottom line of the LCD display shows the capacitor bank status. The numbers 1 to 16 below the LCD display are for specific outputs. (capacitor bank number that is controlled by TRPF-02). The LCD display above this number gives the status of that specific output/Capacitor bank. Total blank “ ” indicates that that output is not used for control. A small dash indicates that Bank is connected but is in OFF state. A symbol indicates that bank is connected and it is in ON state. A symbol indicates that bank is declared as fixed bank and is ON. A symbol indicates that bank is declared faulty and is OFF. - 22 -

25 ØØØ417.7 V COSφ=0.986 INDA Mains Voltage
For an example, If the screen seen is as below means: COSφ=0.986 INDA Power Factor at Load sensing CT is Inductive. System is compensating Transformer/Supply grid. Unit is operating in Auto mode. Total number of banks that are operational are seven. Bank no.1 is declared as fixed and is in ON condition. Bank no.2, 3 and 7 are in ON condition. Bank no.4 & 6 are in OFF condition. Bank no.5 is declared as faulty. The detailed meaning of System operation, mode, fixed bank, bank operational, discharging etc would be explained in more detail in the later part of manual. (Edit Parameter “Step”) Displaying of other Parameters: The other system related parameters can be observed by Scroll up/down keys. Next screen on pressing Scroll down displays the Mains Voltage. This is the voltage that is displayed at the input terminals of the TRPF-02. In case intermediate PT is used then this will indicate the voltage at primary of that PT. Mains Voltage ØØØ417.7 V Display Page: 01 - 23 -

26 Mains Current 0731.9 A Cap-Current 0305.2 A Active Power 00525.3 KW
Further press the Scroll down key displays Mains Current A Load current at the Sensing CT. Overall Capacitor current sensed by Capacitor current CT. Active Power i.t.o. KW that is sensed by the relay. This is at the source/transformer side. Reactive Power i.t.o. kVAr relay. This is again source/ transformer side. –ve sign indicates capacitive PF. Apparent Power i.t.o. KVA that is sensed by the relay. This is source/transformer side value. KVAR value offered by the Compensating capacitor. This is reactive KVAR given by Auto PF correction system. Display Page: 02 Cap-Current A Display Page: 03 Active Power KW Display Page: 04 Reactive Power KVAr Display Page: 05 Apparent Power KVA Display Page: 06 C-KVAR Display Page: 07 - 24 -

27 Load Side KVAR 00287.4 Load Side KVA 00598.8 Load Side COSφ 0.877 IND
Load side kVAR value. This is the value without any capacitive compensation. Load side kVA value. Load side Power Factor value. Operational Grid frequency. Voltage Total Harmonic Distortion in %. # is either F or R user defined parameter. THD-F: THD fundamental. THD-R: THD RMS value. Source/ Transformer current THD in %. Display Page: 08 Load Side KVA Display Page: 09 Load Side COSφ 0.877 IND Display Page: 10 Frequency 50.2 Hz Display Page: 11 Voltage THD-# 002.1 % Display Page: 12 Current THD-# 012.9 % Display Page: 13 - 25 -

28 Cap Cur THD-# 018.5 % Temperature 36 Deg C Time: 17:01:12
Capacitor current THD in % Temperature inside the housing of TRPF-02. This screen only with “R” and “RD” versions. Displays the RTC (Real time clock) time and date. Time in hh:mm:ss format. Date in dd:mm:yy format. The firmware version used. As product is constantly under up-gradation, this may change depending on date of supply. Display Page: 14 Temperature 36 Deg C Display Page: 15 Time: 17:01:12 Date: 26/09/04 Display Page: 16 TAS Software Ver TRPF02-1.2 Display Page: 17 Further pressing of scroll down key will bring the display back to Page no.00. Similarly, by pressing scroll up key, the display pages in reverse sequence can be seen. The display can even be put in “Auto Scroll” with changeover time as defined in user defined parameters. - 26 -

29 * Enter Password:  Method for Keyboard/Display usage.
Flow chart for entering into different modes: Enter the 4 Digit password By use of &  Keys. PRESS COSφ=1.ØØØ INDA Enter Password:  Default Display mode IF PASSWORD Correct? NO YES * Enable If Password Option is Enable/Disable. Disable - 27 -

30 * # Select 1.Edit Parameter Select 2.Auto Operation Select
COSφ=1.ØØØ INDA Default Display mode Select 1.Edit Parameter Select 2.Auto Operation Select 3.Manual Opern # - 28 -

31 # Select 1.Edit Parameter Select 2.Auto Operation Select
3.Manual Opern COSφ=Ø.92Ø INDA COSφ=Ø.876 INDM Operation in Auto Operation in Manual Mode Mode. Edit Parameters Display Display related parameters. General parameters Grid / Transformer / APFC system related parameters Only with “R” & “RD” versions. Communication related parameters. Fault trip settings. Capacitor bank step settings. Edit Parameters General Edit Parameters System Edit Parameters Communication Edit Parameters Fault Edit Parameters Step COSφ=1.ØØØ INDA Default Display mode - 29 -

32 Select 2.Auto Operation Auto and Manual Operation Modes:
Before Understanding the Parameter Editing, lets understand the two modes of operation. “Auto” and “Manual” Auto Operation: Select 2.Auto Operation On this screen pressing “ENT” key will put the unit in Auto Operation. This mode will continue till alternate operation mode is selected or unit is put in Power down condition. This is the mode in which the unmanned operation of automatically putting the capacitors in and out of circuit is performed. This mode should be normally selected with TRPF-02, once the system is totally commissioned. Here the kVAr compensation values are calculated by TRPF-02 and the closest equivalent capacitor combination is inserted in the system so that the PF is maintained within the desired level. This is as per the kW v/s kVAr graphs shown earlier in PF compensation part. On the default display, the status of capacitor banks is seen as performed by TRPF-02. Any TFB (Thyristor switch fault Feed Back) commands from thyristor switches will be considered as that specific capacitor bank is faulty and TRPF-02 will not use this bank for compensation. It will try to use the other capacitor banks to select the best possible combination of the banks to achieve target kVAr. (i.e. target PF). TRPF-02 assumes that the thyristor switches used are Zero spike current switch On thyristor switches (Like TAS ZCTC or ZCCP). Thus the control command to multiple banks switch ON/OFF can be simultaneous in Auto mode. - 30 -

33 Select 3.Manual Opern Manual Operation:
Pressing “ENT” button on this screen will put TRPF-02 in Manual mode. This mode would continue to run till it is purposefully changed or Power down. This mode is normally used to perform the Operation like: Resetting of faulty banks to healthy status. Checking the Capacitor banks by turning them ON/OFF. Declaring specific bank/s faulty. Masking of the banks so that once auto mode is selected, these faulty declared banks would not be used. For Declaring banks faulty or Resetting faulty banks: In manual mode default screen press “ENT”. The cursor above bank 1 will start blinking. Use  keys to select the specific bank. Then use key to declare the bank faulty. To reset the faulty bank, bring the blinking cursor to that bank and use  key to declare the bank as healthy. Once the specific banks are declared faulty or reset from faulty to a healthy status, press “ENT” key so that cursor stops blinking. For saving the status on permanent basis (so that even after Power down, the status is unchanged), press “SAVE” key. After this save command, the unit will jump back to default mode. (Default as auto or manual is set in edit parameters). For Testing banks with manual On/ Off commands: Press “ENT”, the cursor will start blinking. Use  keys to select the specific bank/s that are healthy and use  key to turn On and use  key to turn Off the capacitor banks. To come out of Manual On/Off edit mode, press “ENT” key so that cursor stops blinking. - 31 -

34 Edit Parameters Display Parameter Editing: LCD Contrast :05
Fonts shown in Blue color are editable. In LCD Display, they are still black in color. For adjustment of contrast of the LCD display. The number lowering would make the LCD darker. Note the method of editing the parameter. press “Enter”, then edit with scroll keys, change to correct value and press “Enter”. This indicates the page number that should be displayed as default. This parameter is not of significance if Auto-Scroll is enabled. This option allows the user to decide the display to scroll automatically or only with pressing of scroll up/down keys. Auto scroll enable will scroll display at the fixed user defined interval. After going to last 16th or 17th page, it will jump back to 0th page. This parameter decides the scrolling interval in seconds. This parameter is not used if Auto Scroll is disabled. TRPF-02 displays the %THD of various parameters. If this display required is with respect to RMS value, select R-THD. If this display required is with respect to fundamental value, select F-THD. (Its for user to make choice as per the convenience) LCD Contrast :05 Edit Parameter Default Display Page No :00 Auto Scroll Disable :0 Auto Scroll Enable :1 Scroll Time Sec :005 THD To Display R-THD :0 THD To Display F-THD :1 Save the entered Information and go to the default display page - 32 -

35 Edit Parameters General Load Default No :0 Load Default Yes :1
There are number of parameters that are loaded at the time of manufacturing. In case user wishes to load these, The load default can be set to “Yes” and then the “SAVE” command would put all the para- meters as set while manufacturing. The password to enter into any mode can be enabled by making this parameter as “Enable”. The default value here is “Disable”. The 4 digit number that can act like a pass- word can be changed by changing the value in this parameter. There is one auxiliary digital input (12Vdc) that can be used for various options that can be defined by user. They are. 0. None: Aux. input is not used. 1: Output Enable / Disable: If selected, ‘1’ at this will turn off all the capacitor bank that are controlled by TRPF-02. 2: Mains/Generator: This decides if the target set point that are used by TRPF is for Mains or Generator operation. If default mode set is Mains, then ‘1’ here will put it in Generator and ‘0’ in mains mode. For Generator default, the conditions are exactly opposite. (The default as Mains or Generator is explained later) 3. Reset Fault: Any banks that may be declared faulty can be reset to normal when ‘1’ is detected at the input. Load Default No :0 Load Default Yes :1 Password Disable :0 Password Enable :1 Change Password :0000 Aux Input Func. None : 0 Aux Input Func. O/P En Di : 1 Aux Input Func. Mins/Genr : 2 Aux Input Func. Reset Flt : 3 Save the entered Information and go to the default display page Next page continued - 33 -

36 Edit Parameters General From Previous page continued Aux Output Func.
TRPF-02 has one Auxiliary output that can be used for user defined functions. This is a galvanically isolated NO contact. The user defined parameter defines its operation. 0: Not used. 1: If TRPF-02 detects the fault that is used for capacitor switch off. 2: Any type of fault detected by TRPF-02. 3: If TRPF-02 detects the out of step fault this contact is turned ON. 4: This option only with ‘R’ & ‘RD’ version in case of communication fault with GSM modem, can give reset command. Aux Output Func. None : 0 Aux Output Func. TripFlt : 1 Aux Output Func. Systm Flt : 2 Aux Output Func. OutOfStep : 3 Aux Output Func. Rst Modem : 4 Save the entered Information and go to the default display page Note on “Out of Step”: This fault is detected when desired kVAR compensation is not achieved, even after turning ON all the possible capacitor banks. This fault comes up only after two consecutive compensation time cycles are elapsed with faulty condition. The aux. Output contact thus, can be used to enable the additional capacity of the PF correction equipments or just an alarm. - 34 -

37 Edit Parameters System Meas. Voltage :63.5 :110 :240 :415 EXT-PT Ratio
TRPF-02 comes with four different voltage ranges. These are 415V, 240V, 110V and 63.5V. These values are dependent on the hardware provided with the unit and thus these parameters are non-settable. As explained earlier, 63.5 and 240 voltage modules work in “In-Phase” configuration. And 110 and 415 voltage modules work in “Quadrature” configuration. This parameter though non-editable is given so as to inform the user of configuration. Meas. Voltage :63.5 :415 :110 :240 For rated system voltages other than the ones provided in above 4 options, external PT can be put. The ratio of the PT as secondary: primary is to be put here. With no external PT it should be ; With 11kV system with 110V secondary PT, this ratio is “100.0”. This parameter tells the TRPF-02 about the primary current rating of the Grid/Transformer side connected CT. This parameter is used by TRPF-02 only if the unit is used with the Scheme-3 as explained earlier in the installation guidelines. The parameter tells TRPF-02 about the primary current rating of Generator side CT. EXT-PT Ratio 001.0:1 CUR CT Primary Mains : 1400 CUR CT Primary Gener : 1000 CUR CT Secondary. [1] Amp :0 [5] Amp :1 This parameter tells the TRPF-02 about the secondary current rating of the CTs used by Grid/Transformer (Mains) as well as Generator. There are 2 options available. “0”: 1Ampare. & “1”: 5Ampare. Save the entered Information and go to the default display page - 35 -

38 Edit Parameters System CAP CUR CT Prim : 0500 CAP CUR CT Sec
The parameter here defines the Capacitor current feedback CT primary rating in terms of Amperes. For secondary currents ratings of Capacitor CT, there are two options. ‘0’: 1Ampare. ‘1’: 5Ampare. Settings with Mains operation: This is upper target PF setting. This limit can be either set as Inductive or Capacitive. ‘1’: Inductive. ‘0’: Capacitive. The exact value of upper target PF is set here. This value can be anywhere between to 1.000 This is Lower target PF setting. Here too, the limit can either be set as Inductive or Cap. The exact value of lower target PF is set here. This value can be anywhere between to 1.000 CAP CUR CT Sec [1] Amp :0 [5] Amp :1 PF Up Lim: Mains [Ind :1] PF Up Lim: Mains [Cap :0] PF Up Lim: Mains Cap :0 [0.995] PF Low Lim:Mains [Ind :1] PF Low Lim:Mains [Cap :0] PF Low Lim:Mains Ind :1 [0.990] Save the entered Information and go to the default display page - 36 -

39 Edit Parameters System PF Up Lim: Gen [Ind :1] 0.998 PF Up Lim: Gen
Settings with Generator operation: This is upper target PF setting. This limit can be either set as Inductive or Capacitive. ‘1’: Inductive. ‘0’: Capacitive. The exact value of upper target PF is set here. This value can be anywhere between to 1.000 This is Lower target PF setting. Here too, the limit can either be set as Inductive or Cap. The exact value of lower target PF is set here. This value can be anywhere between to 1.000 This parameter informs TRPF-02 if the default operation is with Mains or Generator. ‘0’: Mains operation ‘1’: Generator operation. For Example: If Generator operation is selected, all setting with generator would be applicable normally. With Aux.input set to ‘2’: “Mains/Gen” and the dig. input given High ‘1’ will shift settings to mains operation in such case. PF Up Lim: Gen [Cap :0] PF Up Lim: Gen Cap :0 [0.995] PF Low Lim: Gen [Ind :1] [Cap :0] PF Low Lim: Gen Ind :1 [0.990] Mains Generator Mains :0 Generator:1 Save the entered Information and go to the default display page - 37 -

40 Edit Parameters System Measurement Mode In Phase (L-N)
This parameter too is not user settable. It is given here for indication that wiring should be connected in “In Phase” or “Quadrature”. This is already explained in the earlier topic. This is the parameter that is to be used for convenience of commissioning. In case the CT connected or Voltage phases connected are with reverse polarity, TRPF-02 can check the kW sign. If this sign is –ve, and if this parameter is “Enable”, it internally reverses the polarity of CT. But in some cases, where the system is to be used with 4 quadrant operation, this is not desirable. Under such case this parameter should be set to “Disable”. The typical example of this is with wind-mill operation using Induction Generator. Measurement Mode Quadrature (L-L) Auto KW Polr Chk Enable :1 Auto KW Polr Chk Disable :0 Save the entered Information and go to the default display page - 38 -

41 Edit Parameters Communication Only with “R” and “RD” version. Unit ID
This parameter is used for defining the unit Identity number. This is useful when unit is acting remote terminal unit in point to multi-point communication. TAS-01 protocols in Annex.2. The parameter defines here the speed of serial communication. Communication structure is 8bit data, 1 start bit, 1 stop bit, No parity. Speed of communication is defined in bauds 0: 4800 Baud 1: 9600 Baud 2: Baud This parameter defines the communication protocol that would be used on RS-232 port It can be either: 0: TAS Protocol (as per annexure) 1: MODBUS ASCII. 2: MODBUS RTU. 3: GSM modem (on AT+ commands) The communication method should be selected appropriately depending on the equipments used for communication. This parameter useful in case of GSM modem communication mode is selected. It defines the GSM service provider no. Receiver no. is the number of the Master control unit where the information from TRPF-02 would be transmitted. Unit ID :0000 Baud Rate :0 Baud Rate :1 Baud Rate :2 Commu. Mode TAS Protocol :0 Commu. Mode Modbus ASCII :1 Commu. Mode Modbus RTU :2 Commu. Mode GSM :3 Ser Provider No. Receiver No. Save the entered Information and go to the default display page - 39 -

42 Edit Parameters Communication Only with “R” and “RD” version. Time
17:23:05 The time of the RTC (real time clock) inside the TRPF-02 can be set by adjusting the correct time. Time is in HH:MM:SS format. Similarly the date of RTC cab be adjusted. Date is in dd:mm:yy format. Normally, user will find ‘0’: ‘No’ in this para- meter. Once the above specified time and date are adjusted, this parameter can be set to ‘1’:’Yes’. Pressing the “SAVE” button will initialize the RTC to the new time and date values. In case of battery used in TRPF-02 goes faulty and is not replace in time, or in off state, this battery is removed, the Non Volatile RAM values can become invalid. Under such case NVRAM fault can come up. Thus to clear the NVRAM, and re-write this with refreshed parameters, ‘1’-Yes selection is done and then “SAVE” is pressed to clear this NVRAM fault. Date 27:08:04 Initialize RTC No :0 Yes :1 Clear NVRAM No :0 Yes :1 Save the entered Information and go to the default display page - 40 -

43 Edit Parameters Fault Over Vol Fault Disable :0 Over Vol Fault
Over Voltage conditions, the action that can be taken by TRPF-02 is indicated here The options available are: 1: Indicate: Only will indicate on display & will communicate if GSM comm. 2: Off Step: Here along with action from above points, will turn of variable banks immediately. 3: Off Fix: If fixed banks are controlled by TRPF-02, then these too would be switched off along with variable banks. 0: Disable any action by TRPF-02 after detecting over-voltage condition. This parameter defines the level of over-voltage at which this fault would be detected. Over Voltage Resume is the level of over-voltage for fault to be reset and normal operation of the TRPF-02 can resume. Over Vol Fault Disable :0 Over Vol Fault Indicate :1 Over Vol Fault Off Step :2 Over Vol Fault Off Fix :3 Over Voltage Limit(%) :115 Over Voltage Resume(%):110 As per the sequence of Over-Voltage, the various faults have same options. The various faults in this fault are. Under Voltage Fault: For under-Voltage conditions. Over Load Fault: For Over-loading conditions on supply system. Under Load Fault: It is kW value of loading, below which this fault can activate. Over/Under CAP-I Fault: Capacitor Over/Under current for the given kVAr connected. Here there is one more option of allowing auto-restart. Used in case the option is used for disabling the capacitor banks and need to restart these automatically. The time of auto-restart is programmable too. Cap. Current THD Fault: Against Capacitor current THD exceeding. Over/Under Frequency Fault: Against frequency changing problems. - 41 -

44 Edit Parameters Fault Temperature Flt Disable :0 Enable :1
Apart from the above specified faults, TRPF-02 is capable of sensing the temperature inside its own cabinet. In case of excessive limit of the temperature, the unit can be used to disable all the outputs commands to the banks. The limit of the temperature too are adjustable. U.Limit is the tripping limit and L.Limit is the resume limit setting. In case TRPF-02 after switching on all the possible capacitor banks finds that for next two compensation cycles, PF is lower than the PF lower limit, then this fault is indicated if enable option is selected. But this fault does not switch off capacitor banks. Temperature Flt Disable :0 Enable :1 Temperature DegC L.Limit :50 Temperature DegC U.Limit :60 Out of Banks Flt Disable :0 Enable :1 Save the entered Information and go to the default display page - 42 -

45 Before explaining further Edit Parameters, we need
To know the “compensation method/cycle ” in Auto mode. Timing Diagram: Time. Step Response Correction Time. Total Compensation Cycle Time Start of Compensation Cycle. Start of next Instants at which the Capacitors Physically Inserted/removed in/out of the system. End of TRPF-02 command for ON/OFF - 43 -

46 Edit Parameters Step Correction Mode Auto :0 Manual :1
TRPF-02 can be used Auto or Manual mode. Usually it is used with Auto mode. But in case to be used in manual mode as normal default, the setting ‘1’ here will do the same. At power up too under such case unit will start in Manual mode. In auto mode, the KVAR to be inserted in the system can be calculated by two methods. 0:(Instant.): On instantaneous value at the moment of compensation. 1:(Mean): On basis of the mean KVAR over a period of one compensation cycle. Correction Mode Auto :0 Manual :1 CompensationKVAR Instant. :0 Mean :1 The Previous page diagram shows the timing sequence. Correction time is the time during which there is total inactivity (except measurement) as far as capacitor switching is concerned. This unit is for high speed thyristorised switching. Thus response is fast and thus this is settable in terms of number of mains cycles. Step Response is given in mains cycles. This is the time lag between the TRPF-02 command and the Capacitor switching mechanism of physically putting capacitors in the circuit. This is programmed depending on Thyristor switches configuration and charged voltages across the capacitors. It also depends on discharge devices as well as detuned reactors % if used. This is to be set depending on these said parameters. Correction Time Cycles : 005 Step Response Cycles : 001 - 44 -

47 Edit Parameters Step Banks Connected : 10 Fix-Bank Setting.
Total number of Banks (either declared as fixed or variable) that can be switched ON/OFF by TRPF-02. By using “ENT”, “UP” and “DOWN” keys, the fixed banks can be defined for corresponding to the specific output of TRPF-02. Fixed banks are the ones that are even kept ON at min. loading. In case APFC system uses some capacitor bank that is fixed but not controlled thro’ TRPF-02, it should be specified here. Banks Connected : 10 Fix-Bank Setting. Ext-Fixed Bank KVAr : 025 The correction type is the method used by APFC system to configure its capacitor banks. 0: Binary: Here if banks are configured with a ratio of 1, 2, 4, 8, 1: Un-Equal: In case user uses the banks that does not have a specific integral pattern, Un-Equal banks option to be selected. 2:C-Series: Some standard configurations are readily programmed in TRPF-02. In case these are to be used, this option can be selected. 3:E-Series: User defined definite configuration series can be selected if APFC configuration is suited for the same. Correction Type Binary : 0 E-Series : 3 Un-Equal : 1 C-Series : 2 This parameter is used in case correction type used is Binary. The kVAr value defined here is the value corresponding to minimum bank size in a binary configuration. I.e. in above specified Binary logic of 1, 2, 4, ---, it corresponds to 1. Bin-Bank KVAR : 020 - 45 -

48 Edit Parameters Step Cntrl Series:06 1248888888 E Series 1234555666
This parameter is used if Correction Type is used as C-Series. This parameter defines the series to be used for defining the Capacitor banks configuration. The various C-Series are: 00: 01: 02: 03: 04: 05: 06: 07: 08: 09: 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: This parameter is used in case Correction Type is used as E-Series. The digits can be varied from 1 to 9 and A to F. A corresponds to ’10’ and F corresponds to ’15’. For either E or C series, ‘1’ corresponds to what capacitor bank rating in terms of KVAr should be entered here. Cntrl Series:06 E Series C/E Series Bank KVAr :025 - 46 -

49 Edit Parameters Step Unequal Bank[1] KVAr : 010 Unequal Bank[2]
Parameters here are used in case Correction Type is selected with Un-Equal option. Here every bank connected can be defined in terms of KVAr. TRPF-02 in Auto mode has been built with intelligence that it will select the correct combination of the Capacitor banks that matches nearest to the KVAr requirements, so that PF is maintained within the specified limits. Unequal Bank[2] KVAr : 012 Unequal Bank[nn] KVAr : 100 Save the entered Information and go to the default display page - 47 -

50 Recommendations for Thyristorised Auto-PF control panel.
Provide the Discharge resistors across the capacitors. The Discharge resistor value is function of the parameters: Response Time Detuned Reactors % drop value. Thyristor configuration (in line or within delta) Capacitor kVAr value. By taking into account these parameters selection is to be done for appropriate values of these resistors and their wattage. Keep the control command and other control wires (+12V) away from any power wiring. It is recommended to route these control wires in separate channels. Earthing in such electronic panels should be of two types. a) Power Earthing. b) Electronic Earthing. The earth-pits used for such earthing should also be separate. Every thyristor switch should have some minimum clearance recommended by manufacturer from all the sides or any other electrical item. An appropriate cooling arrangement is recommended. If voltage THD is greater than 3.5%, then improve the same by usage of tuned filters first. Otherwise thyristor switches can mal-function. - 48 -

51 The panel in which these equipments are mounted should protect them from dust and conductive suspended particles. It is recommended to put the Fuses or MCBs/ MCCBs in line with every thyristor switch. It is recommended to put a fixed capacitor bank (without suppression chokes but with fuses ) of 10% rating of the total switched kVAr of the system. This helps in terms of absorbing the line transients and provides additional protection to thyristor switches. This also provides the protection to thyristor switches against dV/dt while mains turn ON. Please note that this is recommended for capacitor panel without detuned reactors used. Avoid touching the electronics of the TRPF-02 or thyristor switches even when they are not energized. Do not use contactor switching capacitor panel or fixed capacitor switching on the same line as where thyristorised capacitor switched panel is installed. Provide the proper cooling arrangement to the panel so that panel internal temperature does not exceed 50°C. Regular cleaning with vacuum cleaner helps giving the everlasting performance. - 49 -

52 Commissioning Instructions :
before panel is powered up for the first time. For Thyristor switched Capacitor system.:  1.      Panel Wiring Check Ensure that all connections in the panel is tightened properly and there are no loose connections. Also ensure that the wiring is done as per the wiring diagram. 2.      Power Wiring Check Ensure that the power cables are connected properly from the Panel I/C to the feeder I/C or the transformer bushings. The connection has to be after the Load Feed back CT looking from the Transformer side. As per the schemes given in earlier part of this manual. Ensure that the Bus Bars and/or Lugs are clean and free of Dust, Corrosion or Oxidation on the contact sides so that good electrical connection is maintained. The contact area should be flat so as to get maximum contact area. If required Clean the Bus Bars and/ or Lugs by rubbing it with Polish Paper to remove the oxidation layer. - 50 -

53 3. Load Feed Back CT connection.
Not performing this, can result in to a weaker source point for Capacitor charging during Step on and this can generate undesirable Noise which can hamper the performance of equipments installed in the capacitor panel. 3.      Load Feed Back CT connection. Ensure that the load feed back CT connections are done properly and the CT is inserted in proper phase as per the scheme selected and with proper polarity. Also ensure that the CT is shorted using the shorting facility provided in the panel. CT connections to be done carefully so as to ensure that the wire does not get open and there is no loose connection. Loose connection’s or open CT secondary can result in to very high voltages getting developed in the circuit which can damage the CT and also produce high levels of noise in the system. 4.      Neutral & Earth connections.(applicable for panel with 3phase 4 wire system) Ensure that the neutral and earth connections are done properly. The Panel should not be powered on till it is confirmed that the neutral & earth connections are proper. - 51 -

54 · Remove the power connection to the Controller.
To ensure proper neutral and earth connections follow the instructions below: ·        Remove the power connection to the Controller. ·        Remove all control Fuses in the panel. ·        Switch off all MCB’s /remove fuses for capacitors in the panel. ·        Switch on the incoming MCCB/SFU/ACB in the panel. ·        Measure the three phase voltages w.r.t. Neutral, The three phase voltages should be in the range of +10% of the rated Line-Neutral value. ·        Measure the voltage at the earth terminal w.r.t. Neutral, This voltage should be less than 5V ac. ·        Measure the three phase voltages w.r.t. Earth , The three phase voltages should be in the range of +10% of the rated Line-Neutral value. ·        In case any of the above measured voltages are out of the specified range, switch OFF the MCCB, check and rectify the wiring and then repeat the procedure. The controller and the control sections should not be powered up till the Neutral and Earth connection’s are proper to avoid permanent damage to the controller, contactor coils, fans and other equipment’s in the panel. The Power connections are to be done, at the Source side, in a way that the wire’s are not accidentally disconnected. If required, use proper labels on the wires to identify them. - 52 -

55 Commissioning Instructions :
After the panel is powered up. Remove the fuses in series with every capacitor bank. Connect the supply to the controller. Keep the load feedback and capacitor current feedback in shorted condition. Turn On the supply to the panel and set Date/time, zero offset and various other parameters as per the panel configuration. Its important to understand the meaning of every parameter from the instructions given before and then put the appropriate values in them. Wrong values entered can give the wrong performance of the panel. Once the parameterisation is complete, put the TRPF-02 in Manual mode to check every bank command is transmitted to the switch. This can be observed by checking that On command is reaching the specific thyristor switch. Use dc voltage measuring meter for this. Once all the switches are seen to be getting the correct commands, switch off the supply to the panel and replace all the fuses (or turn on MCBs if they are provided instead of fuses). Turn on the panel. - 53 -

56 5. Put TRPF-02 back in Manual mode and turn ON/Off the individual steps. Use tong tester (ac current measurement) to check that current in all the three phase of the corresponding bank are OK. If individual phase compensation is used, then check with only corresponding phase. In case any thyristor switch is giving fault feedback, check the cause and rectify the same. 6. Keep all the banks in off mode. Remove the short of Load feedback CT. In case KW value is seen as –ve, CT is with wrong polarity. Either select “Auto KW Polarity chk” in Enable mode or change CT polarity. 7. Remove the capacitor feedback CT short. Put controller front display screen in Capacitor current measurement display. Now turn ON the capacitor banks one by one and observe that capacitor current increases as per the rating of the steps. Turn ON all the banks to see that almost full rated current flows through the capacitors. 8. Switch OFF all the banks manually and put the TRPF-02 in Automatic mode. Observe the panel performance for a period of about 2hrs after the commissioning. - 54 -

57 Fault Finding Guidelines : Fault Type Probable Reason Action to Take
Unit Does not turn ON. LCD is blank with no Backlit. Input supply not coming. Input side fuses blown Check the input supply to restore Check fuses in the unit for OK. Unit not turning ON any capacitor banks, immediately after Power on. This is perfectly OK if unit is powered up, there is a delay of correction time that is provided in the unit only after which units can turn on outputs. As this is normal action, need not take any action. Unit will start performing normally after the stipulated time delay. With whatever capacitor banks ON, TRPF-02 does not indicate the PF as improved. Unit scheme selection may be wrong. Check if In-Phase or Quadrature mode selection is matching that with the wiring. Check that Load CT put is in correct phase and on mains source side. Correct the wiring as per the scheme requirements and the CT positioning. - 55 -

58 Time and Date gets disturbed.
Fault Type Probable Reason Action to Take Time and Date gets disturbed. Back-up battery may not be in healthy state. Replace batteries if required. NVRAM check-sum error indicated. NV-RAM contents have got disturbed. Try clearing NVRAM in Communication menu of the Edit Parameters. Thyristor switches controlled by this unit is/are not turning ON/OFF even if front LCD indication shows correct. Control wiring to thyristor switch is open circuit +12V supply used for controlling may be faulty. Output stages in TRPF-02 module faulty Check the continuity for any open ckt. Replace the Power supply used.(+12V) Replace the TRPF-02 module with new one. Lots of faults that are seen as faults are due to wrong parameter settings. It is recommended to go through the details on Parameter setting explanation part of this manual and set them correctly. - 56 -

59 Default Parameters List :
ANNEXURE – 1. Default Parameters List : Edit Parameters: Display Parameters Default Unit Setting LCD Contrast 05 - Default Display: Page No. 00 Auto Scroll En/Ds Scroll Time 005 Sec. THD to Display R/F Edit Parameters: General Parameters Default Unit Setting Load Default Y/N Password En/Ds Change Password 0000 - Aux. Input Function choice Aux. Output Function Set zero Offset - 57 -

60 Parameters Default Unit Setting
Edit Parameters: System Parameters Default Unit Setting Meas. Voltage Model Depend. - No Settings External PT Ratio 001.0 Current CT Primary: Mains 1000 Amp. Current CT Primary: Gener 0500 Current CT Secondary 5Amp:1 Capacitor Current CT Primar Capacitor Current CT Secon PF Upper Limit: Mains. Ind: PF Lower Limit: Mains. Ind:1 0.970 PF Upper Limit: Generator. 0.820 PF Lower Limit: Generator. 0.800 Mains / Generator (default) Main:0 In-Phase or Quadrature Depend Auto KW Polarity Check En/Ds - 58 -

61 Parameters Default Unit Setting Parameters Default Unit Setting
Edit Parameters: Communication Parameters Default Unit Setting Unit ID 0000 - Baud Rate 9600:1 KBPS Commu. Mode choice Service Provider -- SMS Receiver No. Time (HH / MM / SS) IST time Date (DD / MM / YY) date Initialize RTC/Clear NVRAM Y/N Edit Parameters: Fault Parameters Default Unit Setting Over Voltage Fault 3 choice Over Voltage Limit 115 % Over Voltage Resume 110 Under Voltage Fault Under Voltage Limit 085 Under Voltage Resume 090 Over Load Fault 1 Over Load Limit 130 Over Load Resume 125 - 59 -

62 Parameters Default Unit Setting
Edit Parameters: Fault Parameters Default Unit Setting Under Load Fault 2 choice Under Load Limit (i.t.o. KW) 010 % Under Load Resume 015 Over Cap. Current Fault 3 Over Cap. Current Limit 130 Over Cap. Current Resume 125 Under Cap. Current Fault 1 Under Cap. Current Limit 095 Under Cap. Current Resume 097 Cap.Cur. Flt. Auto Restart. En/Ds Auto Restart Time (CC flt) 0120 Sec. Capacitor Current THD Fault Over Cap.Cur. THD Limit Over Cap.Cur. THD Resume 008 Over Frequency Fault 4 Over Frequency Limit 105 Over Frequency Resume 103 Under Frequency Fault Under Frequency Limit Under Frequency Resume - 60 -

63 Parameters Default Unit Setting Parameters Default Unit Setting
Edit Parameters: Fault Parameters Default Unit Setting Temperature Fault 4 choice Temperature Lower Limit 50 --º C Temperature Upper Limit 60 Out of Banks Fault En/Ds Edit Parameters: Step Parameters Default Unit Setting Correction Mode choice Compensation Method 3ph: 1 Compensation kVAr calculate Mean:1 Correction Time 005 cycles Step Response(mains cycles) 002 Banks Connected Model - Fixed Bank Setting External Fixed Bank 000 KVAR - 61 -

64 Parameters Default Unit Setting
Edit Parameters: Step Parameters Default Unit Setting Correction Type C-Sr.: 2 choice Binary Bank KVAR 005 KVAR Control Series: (C-Sr. select) 00 E- Series: User defined series - C/E Series Bank 020 Unequal Bank - 1 Unequal Bank - 2 Unequal Bank - 3 Unequal Bank - 4 Unequal Bank - 5 Unequal Bank - 6 Unequal Bank - 7 Unequal Bank - 8 Unequal Bank - 9 Unequal Bank – 10 Unequal Bank – 11 Unequal Bank – 12 Unequal Bank – 13 Unequal Bank – 14 Unequal Bank – 15 Unequal Bank – 16 - 62 -

65 ANNEXURE – 2. Serial Communication Protocols – TAS/01
Communication Protocol TAS/01, is specifically designed for the point-to-point OR point-to-multipoint communication systems. These protocols will be normally used by the smaller equipments and is very simple to handle. Protocols are useful in only single “Master” configurations. The “Slave” units can be one or more. Maximum data information that can be sent in one telegram is restricted to 10 bytes of Hexadecimal numbers. (D1 to D10). Structure: Byte No. 01 02 03 04 05 06 07 08 09 10 11 12 String Structure STX ID5 ID4 ID3 ID2 ID1 ID0 P AD3 AD2 AD1 AD0 DL DL1M DL1L DL2M DL2L 10M 10L CS ETX 13 14 15 16 17 32 33 34 35 STX – Start of Text – character: ☻in ASCII format. Value is 02HEX. ETX – End of Text – character: ♥ in ASCII format. Value is 03HEX. ID(no.)– Identification byte. (no.)defines the decimal place of byte. P – Parameter. AD(no.) – Address byte. (no.) defines the decimal place of byte. DL – Data length in terms of hex byte specifying (no.) in D – data. D(no.)M – Data byte MSB nibble equivalent of D(no.). D(no.)L – Data byte LSB nibble equivalent of D(no.). CS – Check Serial-communication Redundancy check byte. NOTE: All the bytes used are in ASCII format and other than STX, ETX, P and CS, all the characters are within the range of 0 to 9 and A to F only. - 63 -

66 Detailed Description:
(Nos indicated with subscription ASC is Decimal number whose ASCII character will be in that byte. Nos indicated with subscription DEC, are the Decimal numbers and Nos. indicated with subscription HEX, are the Hexadecimal numbers.) ID(no.) Is a Six byte long Decimal number. This decimal number is first to be converted to its equivalent BCD (Binary Coded Decimal). Then Units place is given no. D0, Tens place is given no. D1 and so on. Maximum length of ID code is six digits. I.e. from D0 to D5. It should be noted that if ID used is only 4 digits long then the higher up digits should be inserted with ASCII character ‘0’ = 30HEX. So in that case D4 and D5 = ASCII char ‘0’ = 30HEX = 48ASC. The range of all the characters for ID is ASCII char ‘0’= 30HEX = 48ASC. To ASCII char ‘9’= 39HEX = 57ASC. Here the range of ASCII char ‘A’ to ‘F’ is not permissible. This is because ID is only an integer and thus cannot hold the Hexadecimal numbers. AD(no.) Is a 16DEC bits long, hexadecimal number. This hexadecimal number points to the memory location in the “Slave” units. This address which is 2 bytes in length in Hex. format is split into four nibbles. Then every nibble character is converted to its ASCII equivalent. e.g. Say the address location in “Slave” unit that is required to be sent over this serial protocol is : 3A0DHEX , which of-course is two byte or sixteen bit long number. This number is separated out into four nibbles as 03HEX, 0AHEX, 00HEX and 0DHEX. Then they are converted to their ASCII equivalent numbers. - 64 -

67 So that final values in the frame that is sent has;
AD3 = ASCII char ‘3’ = 33HEX = 51ASC. AD2 = ASCII char ‘A’ = 41HEX = 65ASC. AD1 = ASCII char ‘0’ = 30HEX = 48ASC. AD0 = ASCII char ‘D’ = 44HEX = 68ASC. P – parameter. This byte can take any ASCII char from ‘A’ to ‘Z’. Probably, the most important byte of the string. This is used for defining the type of information that is required to be given to the units under communication. e.g. This byte can be: ASCII char ‘S’ = 53HEX = 83ASC. Can mean for the units under communication as “Status Enquiry”. Or ASCII char ‘C’ = 43HEX = 67ASC. Can mean for the units under communication as “Command information”. But the meaning of these ASCII characters will depend on every different type of “Slave” unit. Say if the “Slave” unit is “Energy meter” that uses Tas/01 protocols, the meanings of characters in “P” can be different than that if the other “Slave” unit is “Power factor controller” that uses the same Tas/01 protocols. DL This byte gives the information about the length of the data bytes that are being sent on the string. As the maximum number of data information that can be sent by this protocol per string is 0AHEX = 10DEC. The value that is taken by this byte in a string can be ASCII equivalent of Hex number from 00HEX to OAHEX. i.e. it can be ASCII char ‘0’ = 30HEX = 48DEC, or ASCII char ‘1’, or ASCII char ‘2’ and so on up-to ASCII char ‘9’ and then ASCII char ‘A’, depending on the length of the data information given in D1 to D10. - 65 -

68 e.g. If ten bytes of data information is required to be sent then DL = ASCII char ‘A’ = 41HEX = 65DEC. And If zero bytes of data information is to be sent then DL = ASCII char ‘0’ = 30HEX = 48DEC. D(no.) These are the data information bytes. This part of the string is variable in length and thus earlier defined DL byte gives the information on the same. The maximum information that can be sent per string can be maximum ten bytes. Every byte of data that is to be sent is divided into two nibbles. Then every nibble is converted into its ASCII equivalent. Say information on Data byte D3 is to be sent is 7EHEX. Then it is divided into two bytes with Hex value as 07HEX and 0EHEX. Then these bytes are converted to its ASCII equivalent characters. They are stored as: D3M = ASCII char ‘7’ = 37HEX = 55ASC. D3L = ASCII char ‘E’ = 45HEX = 69ASC. Example: Overall relation between DL & D(no.)M/L .: The data that is required to be sent is three bytes long, Say D1 = FEHEX = 254DEC. D2 = 5CHEX = 094DEC. D3 = 98HEX = 152DEC. Then the length of the data is 03HEX bytes long. So, here DL = ASCII char ‘3’ = 33HEX = 51ASC. D1M = ASCII char ‘F’ = 46HEX = 70ASC. D1L = ASCII char ‘E’ = 45HEX = 69ASC. D2M = ASCII char ‘5’ = 35HEX = 53ASC. D2L = ASCII char ‘C’ = 43HEX = 67ASC. D3M = ASCII char ‘9’ = 39HEX = 57ASC. D3L = ASCII char ‘8’ = 38HEX = 56ASC. - 66 -

69 STX Start of Text – ASCII char ‘☻’ = 02ASC. This is always fixed for TAS/01 protocols and cannot be changed. ETX End of Text – ASCII char ‘♥’ = 03ASC. This too is fixed for TAS/01 protocols and cannot be changed. CS Communication Redundancy Check (CRC) byte. This byte is for ensuring the reliability of communication and is highly recommended to be used by “Master” and “Slave”. The calculation / verification of the byte is being done with the following formulas. CS = XOR ing the bytes in the final ASCII format string. = XOR [ID5, ID4, ID….---,P, AD1, AD0, DL, D(no.)L/M] . (STX and ETX is never considered for CRC calculation). *** END ***  - 67 -

70 After Sales service And Sales Outlets: TAS Powertek Pvt. Ltd. Mumbai:
A-58, Kamal Pushpa, K.C.Marg, Bandra Reclamation (West), Mumbai-50 Tel: Nasik: (Corporate office & works) W-61, MIDC, Ambad, Nasik , Maharashtra (India). Tel: +91 – 253 – / Delhi: (After sales) Bangalore: (After sales) - 68 -

71 E-Mail:
A-58, Kamal-Pushpa, K.C.Road, Bandra Reclamation, Bandra (w), Mumbai (India). Tel: - 69 -

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