OPERATING INSTRUCTIONS For the Model CT
Contents
1. 4 3 0 TEST RESULTS TABULATION 4 3 1 Electrical Measurement Results ss sss sent 00 4 3 2 Mechanical Measurement Results sss e ene eene 4 3 3 Analog Voltage Input Results sss sse tenente 4 3 4 Digital Voltage Input Results osse retains icto 5 3 5 Initiate Current Results sss eee 3 0 Slow Close Test r Dan CREE Rl EE OR e ODE 5 4 0 TEST RESULT GRAPHICS 5 4 1 Thermal Printer Graphic Printout oi osse ossi 5 4 2 Ink Jet Printer Outputs eee etate SA hl eee eed 5 5 0 CONTROLS AND DISPLAY l l 5 6 0 CT 7500 ANALYZER SPECIFICATIONS 9 7 0 CT 7500 SPEGIAL FEATURES calet ER EP bee 10 7 1 CT 7500 Operating Voltage 10 7 2 CT 7500 Main Power 10 7 3 CT 7500 Printer and Printer sss sss ce 10 7 4 7500 Printer Paper Control2. e 25 9 3 Get Graphic Timing Results Using Thermal ss 29 9 4 Save Timing Shot in EEPROM 35 9 5 Print EEPROM Timing Shot Directory tm eee eene 36 9 6 Recall a Timing sss sent 38 9 7 Deletinig a Timibg 39 MODEL 7500 OPERATING INSTRUCTIONS 9 8 Recall a Breaker Test Plan 9 9 Print a Breaker Test Plan 9 10 Print Breaker Test Plan Directory 9 11 Shot Description 9 12 CT 7500 Channel Configuration 9 13 Computer Interface 9 14 Breaker Travel Analysis 9 14 1 Breaker Stroke 9 14 4 Contact Wipe 9 14 5 Breaker Contact Velocity 9 14 6 Analysis Point Selection 9 14 7 Analysis Point No 1 9 14 8 Analysis Point No 2 9 15 Set Up Open Timer Analysis Points 9 16 English Metric Selection 9 17 Set CT 7500 Internal Clock 9 18 Slow Close Test 9 20 Check Cable Hookup 9 21 Automatic Print Setting 10 0 Running the CT 7500s in Tandem 11 0 CT 7500 Trouble Shooting Guide APPENDIX A ITE Circuit Breaker Model 14 4K Timing Chart B CT 7500 Test Plan for ITE Circuit Breaker Model 14 4K C CT 7500 Timing Chart for ITE Circuit Breaker Model 14 4K E Timing Chart for Siemens TCP 149 Circuit Breaker F CT 7500 Test Plan for Siemens TCP 149 Circuit Breaker D CT 7500 Tabulated Test Report for ITE Circuit Breaker Model 14 4K MODEL
3. 05 01 98 2 GET RSLT 13 40 31 3 SET UP 81 4 DIAGNOSTICS EXPANSION FROM EXPANSION TO START UP MENU SUM XOOMS XOOMS OPEN ANALYSIS PT 1 1 PERCENT OF STROKE 2 DIST FROM CLOSE G 3 CONTRACT 1 CLOSE ENTER TO CONFIRM ENTER TO CONFIRM CLOSE ANALYSIS PT 1 1 PERCENT OF STROKE H 1 ANALYSIS POINTS 1 OPEN TIMING 2 DIST FROM CLOSE 2 MEASUREMENT UNITS 2 CLOSE TIMING 3 CONTACT 1 CLOSE 3 SAVE RESTORE 3 PRINT SETTINGS 4 NEXT PAGE 4 TEST PLANS SELECT PRINTER 1 INTERNAL THERMAL J SELECT UNITS 2 EXTERNAL INK JET 1 ENGLISH 2 METRIC TO SUM 1 LOAD TEST PLAN 2 PRINT TEST PLAN NO SHOT SAVE 3 PRINT DIRECTORY 1 SAVE SHOT v gt save SHOT 2 RESTORE SHOT TEST XXXX L 3 SHOT DIRECTORY DATE 05 04 98 09 32 4 ERASE SHOT ENTER TO PROCEED ENTER SHOT NUMBER TO BE RESTORED M ENTER TO CONFIRM 1 SHORT DIRECTORY 2 FULL DIRECTORY STOP TO QUIT NOTES 1 PRESS STOP ON ANY FUNCTION MENU DISPLAY WILL RETURN TO STARTUP MAIN MENU ENTER SHOT NUMBER 2 TURN POWER OFF MOMENTARY TO RESET TO BE ERASED XXXX ENTER TO CONFIRM Enter COMPANY name ENTER TO CONTINUE NUMBER OF CHANNELS 1 3 CONTACTS T 2 6 CONTACTS 3 12 CONTACTS 1 SHOT DESCRIPTION COMPUTER ITF MODE 2 NUMBER OF CHANNELS 3
4. 7500 OPERATING INSTRUCTIONS LIST OF FIGURES Figure 5 1 CT 7500 Control Panel aa ti adest Los Figure 8 1 Typical Circuit Breaker Test Cable Figure 8 2 Typical Series Contacts Test Cable hookup aaa reete Figure 8 3 Typical Dc Trip and Close Control Test Cable Hookup seems Figure 8 4 Typical DC Trip and AC Close Control Test Cable Hookup Figure 8 5 Typical Voltage Monitoring Test Cable Hookup Figure 8 6 Typical External Trigger Hookup Figure 8 7 Transducer Cable a co ete Figure 8 8 AC Current Sensor Hookup Figure 9 0 CT 7500 Operating 5 l a a Figure 9 1 Steering of Menus and User sss Figure 9 2 Typical Tabulated Printout of Open Operation on Thermal Printer Figure 9 3 Typical Tabular Printout of Open Operation on Ink Jet Printer Figure 9 4 Typical Graphic result on Thermal Printer Figure 9 5 Typical Graphic report on Ink Jet Printer eee tente aan Figure 9 6 Typical Graphic Expansion result Printout on Thermal Printer Figure 9 7 Open and Close Timing Graph Interpretation sss sse c Figure 9 8 Open Close and Close Open Graph Interpretation sse Figure 9 9
5. BREAKER TIMING RESULTS 50 Hz SHOT NUMBER DATE 12 TIME 18 30 COMPANY s STATION CIRCUITs mr Fes MODEL mens s TEST SLOW CLOSE TOUCH WIPE 23 in 41 in in OS 40 Figure 9 12 Typical Slow Close test report 9 19 Transducer Self Test The users can check transducer electronics by connecting transducer to the 7500 and running a Transducer Self Test Table 9 20 Performing a Transducer Self Test STEP OPERATION ACTION DISPLAY SELECT DIAGNOSTIC PRESS 4 KEY 1 SLOW CLOSE TEST 2 PRINT DATA 3 TEST TRANSDUCER 4 CHECK HOOKUP SELECT TRANSDUCER PRESS 3 KEY TRANSDUCER TEST 1 XXX XX INCHES 2 XXX XX INCHES 3 XXX XX INCHES Note 1 After selecting transducer test mode move transducer slider and observe display on the CT 7500 LCD 2 If slider is moved 1 00 the 7500 LCD should display 1 00 3 Press STOP key to return to main menu 57 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 20 Check Cable Hookup Table 9 21 Checking the Cable Hookup STEP OPERATION ACTION DISPLAY SELECT DIAGNOSTIC PRESS 4 KEY 1 SLOW CLOSE TEST 2 PRINT DATA 3 TEST TRANSDUCER 4 CHECK HOOKUP SELECT CHECK HOOK UP PRESS 3 KEY MAKE SURE BREAKER IS IN CLOSE POSITION THEN PRESS START INITIATE TEST PRESS START KEY 123456 Quia 7 89 10 11 12 RETURN T
6. i TYPES 14 4 55 500 208 MFR ITE COMMENTS TEST PLAN BRER 2 5 2 2 MFRs SIEMENS COMMENTS Figure 9 11 Typical Test Plan Directory Printout 45 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 11 Shot Description The CT 7500 lets users enter breaker and test data identification ID This data includes the names of the company station circuit and manufacturer as well as the breaker s model and serial number and the name These ID data will print out on the header section of the shot tabulated report If the user saves the timing shot this data will also be saved with the timing shot and the time and date The user selects the alpha numeric entry by pressing the appropriate key To select a letter A the user must press key 2 twice To select letter C the user must press key 2 four times etc To move the cursor forward use the UP ARROW key To move cursor backwards use the DOWN ARROW key Use the CLEAR key to enter a space Table 9 13 Entering Shot Identification Header OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY ANALYSIS POINTS MEASUREMENT UNIT SAVE RESTORE NEXT PAGE SELECT NEXT PAGE PRESS 4 KEY SHOT DESCRIPTION NUMBER OF CHANNELS COMPUTER IF SET CLOCK SELECT SHOT DESCRIPTION PRESS 1 KEY ENTER COMPANY NAME XXXXXX ENTER TO CONFIRM ENTER COMPANY NAME PRESS
7. The CT 7500 will provide OPEN or CLOSE time only under the Quick Shot mode The user can have the CT 7500 to initiate the OPEN or CLOSE test in this case the test report will show OPEN or CLOSE coil current reading and current wave form If the user operates the breaker for the Quick Shot test using External Trigger no coil current reading or wave form will be recorded Timing Breaker Under Time Travel Mode The CT 7500 will initiate the breaker operation and do a timing test on the following operations B OPEN m CLOSE B OPEN CLOSE B CLOSE OPEN OPEN CLOSE OPEN Note 1 The CT 7500 can start OPEN CLOSE operations using a programmable delay between OPEN and CLOSE commands or no delay 2 The CLOSE OPEN can be started by the CT 7500 using several options Contact 1 Close CT 7500 initiates a CLOSE command then OPEN command after detecting circuit breaker s contact closed The CT 7500 detects breaker contact closed through contact channel 1 B Set DELAY CT 7500 initiates a CLOSE command then OPEN command after a programmable delay from a CLOSE B No DELAY CT 7500 initiates a CLOSE command and OPEN command together Since the circuit breaker is in the open state the circuit breaker 52B contact allows the close coil to be energized to start the close command When the circuit breaker is making the transition from open state to close state the 52A contact will close allowing the breaker to initiate th
8. X 3 O wm x AX 3 3 4 0 IV Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS APPENDIX D CT 7500 Tabulated Report for ITE Circuit Breaker Model 14 4K BREAKER TIMING RESULTS 60 Hz SHOT NUMBERs DATE 12 22 00 TIME 10 35 COMPANY VANGUARD INSTRUMENT STATION ONTARIO CIRCUIT ITE MODEL 14 20 12345 OPERATOR CONTACT TIME TIME CYCLE FPF BOUNCE lt m gt lt m gt 5 01 77 FAIL 20 233 10 01 99 PASS 20 00 01 9396 PASS 00 00 FAIL 00 00 FAIL 00 00 FAIL DELTA TIME OO3 60 Pass TRAVEL ANALYSIS STROKE in SPEED fte s OVER TRAVEL in BOUNCE BACK in TRAVEL ANALYSIS STROKE in SPEED tf t OVER TRAVEL in BOUNCE BACK in TRAVEL ANALYSIS STROKE in SPEED fTt z OVER TRAVEL in BOUNCE BACK in SPEED ANALYSIS POINT 1 01 50 POINT 2 0 NOMINAL VOLTAGE MINIMUM VOLTAGE INITIATOR CURRENT SHOT LENGTH 1 SECOND INSERTION RESISTOR rici TRIGGER INTERNAL VANGUARD INSTRUMENT CO HPN 19968 99 2000 1710 GREVILLEA CT ONTARIO 91761 USA TEL 909 923 9390 FAX 9092923 9391 REV 1 312 OPERATION 0009 SERIAL NUMBER 75035 CLOSE THRESHOLO 020 OPEN THRESHOLD 200 THRES 255 SAMPLE 011 VOLTAGE 064 CT 7500 Timing C
9. sss se 10 7 5 Replacing CT 7500 Thermal 11 7 6 7500 LCD Contrast Control sse tme 11 8 0 TEST HOOKUP eene 60 12 8 1 Contact Cable HOoOKUD Tau un sisayuq 12 8 2 Initiate Cable Hookup J l e ci n 12 8 3 Analog Voltage Monitor Hookup 12 8 4 Digital Voltage Monitor 12 8 5 External Trigger J uui au Basta 12 8 6 AC Current Sensor Hookup beta cien 13 9 0 OPERATING PROCEDURES 18 9 1 Timing a Circuit Breaker 21 9 1 1 Timing an Open Operation With No 5 22 9 1 2 Timing an Open Operation With Insertion Resistor see 23 9 1 3 Timing Close Open Operation Using Channel 1 24 9 2 Get Tabulated Results Using Thermal Printer sss
10. 1 gt gt 21 32 OPEN HI OFEN HI CLOSE 1 Oi 40 12 46 VEL CxeCDOISTC API APZ gt r STROKEJ 31 50 ms OFEN SPEED ANALYSIS POINTS POINT 1 CONTACT POINT gt CONTACT PLUS o10 0 mS CLOSE SPEED ANALYSIS POINTS POINT 1 CONTACT POINT 2 CONTACT MINUS 010 0 ms Note Formula to calculate velocity is programmed in breaker test plan VII Rev 2 Jan 2001 Vanguard Instruments Company Inc www vanguard instruments com a ia pi Tra
11. 1 KEY SELECT PRINTER 1 INTERNAL THERMAL 2 EXTERNAL INKJET OUTPUT TABULATED RESULTS ON PRESS 1 KEY 1 PRINT TEST RESULTS THERMAL PRINTER 2 PLOT FULL CHART 3 PLOT EXPANSION 4 PLOT 0 200 MS Note To get a tabulated report on the ink jet printer press key 2 in step 2 Ensure the ink jet printer is connected to the CT 7500 for this report 27 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS BREAKER TIMING RESULTS SHOT NUMBER s DATEs 12719700 STATION CIRCUIT MODEL s VANGUARD ONTARIO ITE 14 12345 60 Hz 03 52 TEST CLOSE CONTACT TIME CH TIME CYCLE lt m gt 1 161 50 10 89 161 40 10 86 DELTA TINE CT CHANNEL ANALYSIS TIME lt m gt 164 70 CYCLE 11 08 TRAVEL ANALYSIS STROKE in SPEED fees os OVER TRAVEL oo BOUNCE BACK in oo SPEED ANALYSIS POINT 1 O1 00 POINT 2 05 09 NOMINAL VOLTAGE MINIMUM VOLTAGE INITIATOR CURRENT SHOT LENGTH INSERTION RESISTOR TRIGGER BOUNCE lt m gt 1 1 m VOLTS 25 1 AMPS 1 SECOND No INTERNAL VANGUARD INSTRUMENT CO HPN 1998 99 2000 1710 GREVILLEA CT ONTARIO 91761 US TEL 9095923 9390 FAX 9099923 9391 1 312 OPERATION 0007 SER
12. 8 by 11 inch paper 5 0 Controls and Display See Figure 5 1 and Table 5 1 Before using the CT 7500 Analyzer users should become familiar with all of its controls and display indications The keypad and display are used to operate the CT 7500 Analyzer Figure 5 1 shows the control panel and numbered lines pointing to each control and indicator The line numbers refer to Table 5 1 which describes the function of each control and indication 5 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS V2 TRIGGER VOLTAGE INPUT TRANSDUCER INPUT INITIATE RS 232C PRINTER CT 7500 Digital Circuit Breaker Analyzer Vanguard Instrument Co Inc Ontario California USA SERIAL MADE IN U S A Figure 5 1 CT 500 Control Panel 6 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS Table 5 1 Model CT 7500 Controls and Displays Fig 5 1 PANEL MARKING FUNCTIONAL DESCRIPTION CONTACT INPUT 1 12 Connector 3 pin each input is a continuity dry sensor for detecting a contact closing or opening a timing input to the processor 30V 300V VOLTAGE Connector 3 pin each input is a voltage detector for V1 V2 VOLTAGE INPUT timing voltage 30 300 V dc peak of trip or close coil switching active period TRIGGER VOLTAGE INPUT Connector 3 pin input 30 300 Vac dc or peak triggers timing functions L We 73 AC current sensor input channel AC 100 240V 5A MAX Power plug
13. INITIATE DC CIRCUITS Positive Trip Circuit GREEN WHITE OPEN CLOSE INITIATE INITIATE Negative Trip Circuit Firgure 8 3 Typical DC Trip and Close Control Test Cable Hookup CLOSE OPEN INITIATE INITIATE AC DC CIRCUITS DC Trip AC Close Circuit Figure 8 4 Typical DC Trip and AC Close Control Test Cable Hookup 16 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS V1 WHITE CLOSE TRIGGER OPEN TRIGGER CLOSE TRIGGER Negative Trip Circuit Figure 8 6 Typical External Trigger Hookup 17 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 0 J TRANSDUCER INPUT ramea Transducer Figure 8 7 Transducer Cable Hookup AC CURRENT SENSOR Figure 8 8 AC Current Sensor Hookup 18 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 0 OPERATING PROCEDURES The main steps to time a circuit breaker are listed below Figure 9 0 Figure 9 1 is a user s map of all menus for operating a CT 7500 HOOKUP CT 7500 GROUND CT 7500 See note CONNECT CT 7500 CABLES TO BREAKER INSTALL TRANSDUCER APPLY POWER TURN CT 7500 POWER ON PERFORM SELF TEST HOOK UP TEST CABLE TEST T
14. Typical Timing Shot Directory Printout on Thermal Printer Figure 9 10 Typical Test Plan Printout on Thermal Printer Figure 9 11 Typical Test Plan Directory Printout Figure 9 12 Typical Slow Close Test Report LIST OF TABLES Table 5 1 Model CT 7500 Controls and Display Table 7 1 Voltage Selection Jumper Setting Table 9 1 Open Operation with No Resistor l L ato dto Oodd atu Table 9 2 Open Operation with Insertion Resistor Table 9 3 Close Open Operation with No Resistor Table 9 4 Get Tabulated Table 9 5 Plot Chart and Tabulated Report Table 9 6 Save Timing Shot in EEPROM Table 9 7 Print Timing Shot Directory Table 9 8 Recall a Timing Shot Table 9 9 Delete a Timing Shot Table 9 10 Recall a Test Plan Table 9 12 Print a Breaker Test Plan Directory Table 9 13 Entering Shot Identification Header Table 9 14 Select Channel Configuration s u Table 9 15 Selecting or Aborting Computer Control Table 9 16 Setting Up Analysis Points Using Distance Table 9 17 Select Metric Units of Measure Table 9 18 Setting the Clock and Calendar l Codi e OR Table 9 19 Programming a Slow Close Table 9 20 Performing a Transducer Self Test Table 9 21 C
15. 3 wire ac fuse ON OFF switch Switch is 2 pole rocker input power on amp off GROUND Stud 5 16 18 threads with wing nut safety ground terminal TRANSDUCER INPUT Connector 16 pin each input T1 T3 is a Travel T1 T2 T3 Encoder output contact motion data Printer No panel marking Thermal printer prints on specially treated 475 inch wide paper processor controlled PRINTER Printer port connector 25 pin 1 9 0 ENTER START STOP Keypad 16 key keys are momentary contact CLEAR 1 PAPER LCD pushbutton switches makes menu selections enters alpha numeric data adjusts LCD contrast and moves paper REMOTE ARM SWITCH Remote Arm Switch connector The remote Arm switch with a 15ft cable is provided with each CT 7500 PUSH TO ARM Pushbutton switch spring loaded press amp hold to complete trip amp close circuits for breaker tests Display no panel marking Liquid Crystal Display LCD back lighted 4 line by 20 characters per line displays menus options prompts and test result data EE CLOSE Close circuit fuse 3 amperes 15 Open circuit fuse 3 5 gt PAPER LCD 7 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS Table 5 1 Model CT 7500 Controls and Displays cont Fig 5 1 Index no PANEL MARKING FUNCTIONAL DESCRIPTION INITIATE Connector 4 pin switching circuit for operating the circuit breaker being tested RS 23
16. COMPUTER 4 SET CLOCK TO ABORT SUM TIME HH MM 00 11 50 45 U Figure 9 1 CT 7500 Menu Map 20 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 21 Rev 2 Jan 2001 MODEL 7500 INSTRUCTIONS LIFT BRKR CLS POS A THEN PRESS ENTER TO FIND CONTACT WIPE TRIGGER MODE TIMING MODE OPEN CLOSE TIMING TEST IN PROGRESS 1 INTERNAL TRIGGER 1 OPEN 2 CLOSE HOLD ARM SWITCH HOLD ARM UNTIL 2 EXTERNAL TRIGGER 3 O C 4 C O THEN START TEST COMPLETE 5 STOP ABORT UP TO 15 SECONDS PRINTS 1 PRINT CHS 1 6 TABULAR DATA C OSECOND TRIGGER CLOSE OPEN TIMING D 2 PRINT 7 12 RETURNS SUM 1 CONTACT 1 CLOSE HOLD ARM SWITCH 3 12 HEX FORMAT 2 SET DELAY THRU START 3 NO DELAY STOP ABORT DELAY inmS 0 C DELAY inm S OPEN CLOSE TIMING E HOLD ARM SWITCH THRU START ENTER WHEN DONE STOP TO ABORT OPEN ANALYSIS PT 1 OPEN ANALYSIS PT 2 OPEN ANALYSIS PT 2 OPEN CLOSE TIMING F OF TOTAL STROKE 1 PERCENT OF STROKE OF TOTAL STROKE HOLD ARM SWITCH VALUE 10 2 DISTANCE OF TRAVEL VALUE 60 THRU START ENTER TO CONFIRM ENTER CONFIRM STOP TO ABORT OPEN ANALYSIS PT 1 OPEN ANALYSIS PT 2 OPEN ANALYSIS PT 2 DISTANCE FROM CLOSE 1 PERCENT OF STROKE DIST FROM CLOSE G VALUE 01 00 in 2 DIST FROM CLOSE VALUE 0 05 in ENTER
17. SET UP MENU PRESS 3 KEY ANALYSIS POINTS MEASUREMENT UNIT SAVE RESTORE NEXT PAGE SELECT ANALYSIS MENU PRES 1 KEY OPEN TIMING CLOSE TIMING PRINT SETTING TEST PLANS SELECT LOAD TEST PLAN PRESS 1 KEY LOAD TEST PLAN UP TO SCROLL ENTER TO SELECT VIEW TEST PLAN HEADER PRESS UP ARROW DISPLAY TEST PLAN HEADER KEY TO SCROLL CONFIRM TEST PLAN TO BE PRESS ENTER 1 TEST BRKR LOADED KEY 2 GET RSLT 3 SET UP 4 DIAGNOSTIC SELECT TEST PLANS PRESS 4 KEY LOAD TEST PLAN PRINT TEST PLAN PRINT DIRECTORY 42 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 9 Print a Breaker Test Plan The user can print a breaker test plan stored in the CT 7500 EEPROM Table 9 11 Print a Breaker Test Plan OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY ANALYSIS POINT MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT ANALYSIS POINTS PRESS 1 KEY OPEN TIMING CLOSE TIMING PRINT SETTINGS TEST PLAN SELECT TEST PLAN PRESS 4 KEY LOAD TEST PLAN 2 PRINT TEST PLAN PRINT DIRECTORY ENTER PLAN NUMBER PRESS 0 9 KEY ENTER PLAN NUMBER 02 ENTER TO CONTINUE CONFIRM TEST PLAN PRESS ENTER KEY SELECT PRINTER 1 INTERNAL THERMAL 2 EXTERNAL INK JET PRINT ON THERMAL PRINTER PRESS 1 KEY 1 TIMER 2 GET RESLT 3 SET UP 4 DIAGNOSTIC SELECT PRINT TEST PLAN PRESS 2 KEY ENTER PLAN NUMBER ENTER TO CONTINUE 43 Rev
18. SSS 9623 ESE 253 SSS Ll Tie i cyeres L TYPICAL NO LOAD TRAVEL CURVES FOR OPENING AND CLOSING OPERATIONS AT RATEO CONTROL VOLTAGE 4 _ RECLOSE CURVE FULLY 1 TIME IN CYCLES TYPICAL NO LOAD TRAVEL CURVES FOR RECLOSING AND TRIP FREE OPERATIONS AT RATED CONTROL VOLTAGE Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS lI Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS APPENDIX B CT 7500 Test Plan for ITE Circuit Breaker Model 14 4K TEST PLAN NUMBER 1 Fs 14 5 20 TYPE ITE COMMENT s CONTACT TIME PARAMETERS MAX lt m gt MIN lt m gt DELTA LIM lt m gt RESISTOR TIME PARAMETERS MAS lt m gt lt gt DELTA LIM lt gt 1 0O TRAVEL PARAMETERS STREK VEL im f t HI OF 25 43 64 OFEN LOW Z CLOSE HI OF 25 CLOSE LO 06 75 O4 SO OFEN SPEED ANALYSIS POINTS POINT 1 01 50 in POINT 2 02 50 in CLOSE SPEED ANALYSIS POINTS POINT 1 o1 50 in POINT 2 03 50 in Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS APPENDIX C CT 7500 Timing Chart for ITE Circuit Breaker Model 14 4K 1000 MILLISECONDS 7 90 9 0
19. TO CONFIRM ENTER TO CONFIRM OPEN ANALYSIS PT 2 OPEN ANALYSIS PT 2 TEST IN PROGRESS H 1 PERCENT OF STROKE OF TOTAL STROKE HOLD ARM UNTIL 2 DISTANCE OF TRAVEL VALUE 60 TEST COMPLETE ENTER TO CONFIRM UP TO 15 SECONDS CLOSE ANALYSIS PT 1 CLOSE ANALYSIS PT 2 CLOSE ANALYSIS PT 2 J OF TOTAL STROKE 1 PERCENT OF STROKE OF TOTAL STROKE VALUE 40 um 2 DISTANCE OF TRAVEL VALUE 60 ENTER TO CONTINUE UP ENTER TO CONFIRM TO SCROLL K LOAD TEST PLANS TEST PLANS 1 01 SCROLL SPS 72 ENTER SELECT SHOP SAVE IN PROGRESS SHOT SAVED PLEASE WAIT RESTORING SHOT XXXX RESTORING SHOT RESTORE COMPLETE M TEST XXXXX XXXX DATE 05 04 98 09 32 ENTER TO CONFIRM PRINTING ABREVIATED DIRECTORY STOP TO QUIT PRINTING DIRECTORY STOP TO QUIT ERASE SHOT XXXX ERASE IN PROGRESS TEST XXXXX ERASE COMPLETE PRESS ANY KEY TO DATE 05 04 98 09 32 PLEASE WAIT RETURN TO SUM ENTER CONFIRM Enter CIRCUIT name Enter MANUFACTURER Enter Breaker MODEL Enter SERIAL NUMBER ENTER TO CONTINUE ENTER TO CONTINUE ENTER TO CONTINUE ENTER TO CONTINUE 1 TRANSDUCER 1 2 TRANSDUCERS 1 2 3 TRANSDUCERS 1 2 3 Enter OPERATOR name ENTER TO CONTINUE TIME 00 11 50 45 DATE MM DD YY 05 588 Figure 9 1 7500 Menu 22 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 1 Timing A Circuit Breaker Timing Breaker Under Quick Shot Mode
20. on the test result report Unlike slide wire transducers the CT 7500 transducer needs no calibration or setup A user verifies transducer function by selecting a diagnostic test for the transducer paragraph 9 19 9 14 2 Breaker Over travel Distance Over travel is a distance the contact moves beyond the resting position Over travel is typically found in the Close Operation 9 14 3 Breaker Bounce Back Distance Bounce back is the distance the breaker contact moves before the resting position after over travel Again bounce back is typically found in the Close Operation 9 14 4 Contact Wipe Contact wipe is the distance measured from the close position to the contacts touching or parting In the Close Operation contact wipe is measured from the contacts touching position to the final close position In the Open Operation contact wipe is measured from the close position to contact break or parting position NOTE Contact wipe is measured during operation This measurement may not be as accurate as measurement done using the slow close mode It is recommended the user use the Slow Close Test paragraph 9 18 to verify wipe measurement if required 9 14 5 Breaker Velocity The CT 7500 when used with a travel transducer calculates the breaker contact velocity through the arc zone Users must program the calculation points analysis points on the travel curve for the unit to calculate contact velocity Analysis points selection and se
21. 0 9 KEY OPEN ANALYSIS PT 1 DISTANCE FROM CLOSE VALUE 01 00 in ENTER TO CONFIRM CONFIRM ENTRY PRESS ENTER KEY OPEN ANALYSIS 2 1 PERCENTAGE OF STROKE 2 DISTANCE FROM CLOSE SELECT DISTANCE FROM CLOSE PRESS 2 KEY OPEN ANALYSIS PT 2 DISTANCE FROM CLOSE VALUE XX XX in ENTER TO CONFIRM 52 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS Table 9 16 Setting Up OPEN Analysis Points Using Distance STEP OPERATION ACTION DISPLAY ENTER 5 INCHES PRESS 0 9 KEYS OPEN ANALYSIS PT 2 DISTANCE FROM CLOSE VALUE 02 00 in ENTER TO CONFIRM CONFIRM ENTRY PRESS ENTER 1 TIME BRKR KEY 2 GET RSLT 3 SET UP 4 DIAGNOSTICS NOTES 1 If an entry is not correct re enter digits until display shows desired numbers then press ENTER key 2 Analysis Point 1 is 1 00 inch from the fully closed position 3 Analysis Point 2 is 2 00 inches from the fully closed position 53 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 16 English Metric Selection The CT 7500 supports and displays both English and Metric calculations from the breaker s travel parameters stroke velocity etc The user can switch from one to the other by following the steps in Table 9 17 below Table 9 17 Select Metric Units of Measure OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY 1 ANALYSIS POINT 2 MEASUREMENT UNITS 3 SAVE RESTORE 4 NEXT PAGE SELECT MEASUREMENT UNITS PR
22. 0 9 KEYS ENTER STATION NAME PRESS ENTER XXXXXX TO CONFIRM ENTER TO CONFIRM ENTER STATION NAME PRESS 0 9 KEYS ENTER CIRCUIT NAME PRESS ENTER XXXXXX TO CONFIRM ENTER TO CONFIRM ENTER CIRCUIT NAME PRESS 0 9 KEYS ENTER MANUFACTURER NAME PRESS ENTER XXXXXX TO CONFIRM ENTER TO CONFIRM ENTER MANUFACTURER NAME PRESS 0 9 KEYS ENTER BREAKER MODEL PRESS ENTER XXXXXX TO CONFIRM ENTER TO CONFIRM 46 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS Table 9 13 Entering Shot Identification Header Con t STEP OPERATION ACTION DISPLAY ENTER SERIAL NUMBER PRESS 0 9 KEYS ENTER SERIAL NUMBER PRESS ENTER XXXX TO CONFIRM ENTER TO CONFIRM ENTER OPERATOR NAME PRESS 0 9 KEYS ENTER OPERATOR NAME PRESS ENTER XXXX TO CONFIRM ENTER TO CONFIRM RETURN TO MAIN MENU NO ACTION 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTIC 47 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 12 CT 7500 Channel Configuration The CT 7500 is available with 3 6 or 12 contact inputs Under most common timing conditions the user needs to use only 3 contact timing channels and 1 travel transducer There is no need to print more than 3 timing channels and 1 transducer channel on the graphic and tabulated report The CT 7500 will always default to 3 contact channels channel 1 2 and 3 and 1 transducer channel transducer channel 1 after power is applied to the unit The user can alw
23. 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS TEST PLAN NUMBER 1 IF Fs 14 0 2 ITE COMMENT s CONTACT TIME PARAMETERS MAX lt m gt 0O MIN DELTA LIM lt m gt O RESISTOR TIME PARAMETERS lt m gt gt lt m gt DELTA LIM lt m gt mic TRAVEL PARAMETERS STREK UEL im f t HI 25 43 64 OFEN LOW Z CLOSE HI OF 25 OF CLOSE LO 0S gt o4 50 OFEN SPEED ANALYSIS POINTS POINT 1 01 50 in POINT 2 O3 50 in SFEED ANALYSIS POINTS 1 01 50 in z 03 50 in Figure 9 10 Typical Test Plan Printout on Thermal Printer 44 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 10 Print Breaker Test Plan Directory The user can print a breaker test plan directory stored in the CT 7500 EEPROM using the steps in table below Table 9 12 Print a Breaker Test Plan Directo STEP OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY ANALYSIS POINT MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT ANALYSIS POINTS PRESS 1 KEY OPEN TIMING CLOSE TIMING PRINT SETTINGS TEST PLAN SELECT TEST PLAN PRESS 4 KEY LOAD TEST PLAN PRINT TEST PLAN PRINT DIRECTORY SELECT PRINT TEST PLAN DIRECTORY PRESS 3 KEY TIMER GET RESLT SET UP DIAGNOSTIC TEST PLAN DIRECTORY TEST PLAN
24. 2C Connector 9 pin RS 232C computer interface 8 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 6 0 CT 7500 Analyzer Specifications See table below CONTACT TIMING SIZE amp WEIGHT OPERATING POWER AC CURRENT SENSOR DRY CONTACT INPUTS TIMING WINDOW RESOLUTION DRY CONTACT CHANNEL PROTECTION CONTACT RESISTANCE INSERTION RESISTANCE TRIGGER INPUT VOLTAGE INPUTS CURRENT SENSOR INPUT BREAKER INITIATE TRAVEL TRANSDUCERS CONTACT TRAVEL POINT DIFFERENCE BREAKER ANALYSIS display SOFTWARE included COMPUTER INTERFACE DISPLAY HARD COPY PRINTOUT COLOR PRINTER CARRYING CASE optional 42 Open Close Open Close Close Open Open Close Open 16d 14 11h inches Less than 32 pounds 3 amps 90 120Vac 200 240Vac 50 60 Hz 0 25 Ampere non contact AC current sensor 3 6 or 12 dry input channels Each detects Main amp Insertion Resistor contacts Selectable 1 second or 10 seconds 100 microseconds at 1 second duration 1 0 millisecond at 10 seconds duration Fuses protect all isolated power supplies All contact inputs are grounded until test Inputs are MOV protected CLOSED lt 20 ohms OPEN gt 10 000 ohms Range 10 to 7 000 ohms Open Close 30 to 300 volts dc or peak ac Two 1 0 300 volts dc peak ac analog voltage recording 1 0 255 V dc One Non contact Hall Effect sensor 0 2 to 25 amp ranges dc to 5 kHz Initiate Open Close Open Close Close Open Open Cl
25. Any insertion resistor more than 7 000 ohms is detected as open circuit Timing window results will show main contact timing and insertion resistor contact timing Graphic reports show main contact and resistor contact activities on each of the channels Table 9 2 Open Operation With Insertion Resistor OPERATION ACTION DISPLAY PRESS 1 KEY INSERTION RESISTOR 1 NO 2 YES PRESS 2 KEY TIMING WINDOWS 1 WINDOW 1 SECOND 2 WINDOW 10 SECONDS PRESS 1 KEY TIMING MODE 1 OPEN 2 CLOSE 3 O C 4 C 0 5 PRESS KEY 1 OPEN TIMING Hold ARM Switch Then START STOP to ABORT INITIATE OPEN COMMAND HOLD ARM KEY AND TEST IN PROGRESS PRESS START KEY Hold ARM Until Test complete Up to 15 seconds ANALYZER IS READY TO OUTPUT RESULTS 1 TIME BREAKER 2 GET RESULT 3 SET UP 4 DIAGNOSTIC Note The User can set the CT 7500 to print tabulated and graphic reports automatically after it completes a test See section 9 21 for automatic print setting 25 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 1 3 Timing CLOSE OPEN Operation Using Contact Channel 1 The CLOSE OPEN operation of the breaker simulates a condition where a breaker is closed on a fault The CT 7500 first initiates a CLOSE command then sends an OPEN command only when it detects that main contact 1 is closed This mode truly simulates the breaker closing into a fault condition in the field Table 9 3 Close Open Operation wi
26. ESS 2 KEY SELECT UNITS 1 ENGLISH 2 METRIC SELECT METRIC PRESS 2 KEY 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTIC 54 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 17 Set CT 7500 Internal Clock The CT 7500 has an internal clock with a lithium battery The clock s time and date is displayed on the LCD screen When a timing shot is stored in EEPROM time and date are also stored To set the clock perform the steps in the following table Table 9 18 Setting the Clock and Calendar OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY ANALYSIS POINT MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT NEXT PAGE PRESS 4 KEY SHOT DESCRIPTION NUMBER OF CHANNELS COMPUTER IF CLOCK 5 PRINT SELECT SET CLOCK PRESS 4 KEY TIME HH MM 00 XX YY 00 ENTER HOURS AND MINUTES PRESS 0 9 KEY TIME HH MM 00 XX YY 00 XX YY 00 DATE MM DD YY XX YY ZZ ENTER MONTH DATE YEAR PRESS 0 9 KEY TIME HH MM 00 XX YY 00 XX YY 00 DATE MM DD YY XX YY ZZ XX YY ZZ RETURN TO MAIN MENU NO ACTION 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTIC Note The real time clock battery is good for 3 years Loosing the clock battery will not affect the CT 7500 performance 55 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 18 Slow Close Test The CT 7500 offers a unique feature called slow close test This test lets users measure the distance of a breaker s c
27. HOT DIRECTORY MENU PRESS 3 KEY SAVE SHOT RESTORE SHOT SHOT DIRECTORY ERASE SHOT SELECT SHORT DIRECTORY PRESS 1 KEY SHORT DIRECTORY 2 FULL DIRECTORY STOP TO QUIT PRINT SHOT DIRECTORY NOW NO ACTION PRINTING ABBREVIATED DIRECTORY STOP TO QUIT RETURN TO MAIN DIRECTORY NO ACTION 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTIC Note 1 The CT 7500 will print out shot IDs of 10 last timing shots stored in EEPROM when Short Directory is selected 2 The CT 7500 will print out shot IDs of all timing shots stored in EEPROM if Full Directory is selected A typical shot directory print out is shown on next page 38 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS TIMING SHOT ABBREWIATED DIRECTORY SHOT NUMBERs DATE 12 18 00 TIME 08 08 42 COMPANY MFGR 1 STATION MODEL 1 CIRCUIT SERIAL t OPERATOR TEST 1 OPEN SHOT NUMBERs DATE 12718700 TIME 08 07 03 1 CDMPANY MFGR 1 STATION MODEL 1 CIRCUIT SERIAL 1 1 DPERATDR TEST SHOT NUMBER s OoOOz DATE 12 18 00 TIME 1 07 57 42 COMPANY MFGR 1 STATION t MDDEL 1 CIRCUIT SERIAL 1 OPERATOR TEST 1 SHOT NUMBER DATE 12 18 00 TIME 1 07 56 10 COMPANY VANGUARD INSTRUMENT MFGR 1 STATION MODEL 1 12345 CIRCUIT 14 4 SERIAL 1 1 OPERATOR HAI TEST CLOSE Figure 9 9 Timing Shot Directory Printout
28. IAL NUMBER 75032 CLOSE THRESHOLD 020 OPEN THRESHOLD 200 CT THRES 127 SAMPLE O11 VOLTAGE 064 Figure 9 2 Typical Tabulated Printout of Open Operation on Thermal Printer 28 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS Note 1 Contact time is shown in both millisecond and cycles From figure 9 2 contact channel 1 time is 181 50 ms or 10 89 cycles 2 Contact bounce duration is 1 70 ms 3 Contact wipe is measured as 77 inch 4 The slowest contact and fastest contact differential time is shown as contact delta 0 10 ms 5 AC current sensor time is shown as CT Channel Analysis time in millisecond cycles The CT time is shown as 184 70ms or 11 08 cycles Since this print out was generated to show both Quick Shot mode and Time Travel mode both CT time and contact travel readings are shown on this report 6 Breaker contact stroke is 7 08 inches 7 Contact velocity calculation is 5 72 feet per second 8 Contact over travel distance is 0 29 inch 9 Contact bounce back distance is 0 16 inch 10 Contact velocity calculation is from the 2 analysis points Analysis point 1 is 1 00 inch from fully closed position Analysis point 2 is 5 00 inches from fully closed position 11 The DC power supply was monitored during test The nominal voltage is 52V and the minimum is 37 V 12 Initiate current is 5 1 amperes 13 Timing shot duration is 1 second 14 There is no insertion resistor in this test no insertio
29. IMER BREAKER SELECT CT 7500 TEST OPERATE BREAKER GET RESULTS GET TABULATED RESULTS GET GRAPHIC RESULTS SAVE TIMING SHOT Figure 9 0 CT 7500 Operating Steps Note To reduce the possibility of damaging the CT 7500 contact channels by static discharge in the high voltage substation we recommend the user to ground one side of the 5 bushings 19 Rev 2 Jan 2001 MODEL 7500 INSTRUCTIONS Vanguard Instruments Inc BRKA SLOW CLOSE TEST CONTACT 1 OPEN CS GND 1 SIDE CONTACT 2 OPEN Ontario California USA ENTER TO CONFIAM CONTACT 3 OPEN A LIFT TO CLOSE NOW POWER INSERTION RESISTOR RESISTOR VALUE TIMMING WINDOW ON 1 NO 1 LESS THAN 1000 OHM 1 WINDOW 1 SEC 2 1000 TO 2000 OHM 2 WINDOW 10 SEG gt N 3 MORE THAN 2000 OHM STARTING ADDRESS 1 EVERY POINT 4 SECOND 2 EVERY 5 POINTS D DISPLAY gi Menwnnn Vanguard Instrument 1 CT7000 REVO SIN 1XXXX DIAGNOSTICS SLOW CLOSE TEST PRINT DATA TEST TRANSDUCER RANSDUCER TEST MAKE SURE BREAKER IS CHECK HOOKUP 000 00 INCHES IN CLOSED POSITION E 000 00 INCHES THEN PRESS START 000 00 INCHES Bom PRINT TEST RESULT PLOT FULL CHART PLOT EXPANSION PLOT 200MS SELECT PRINTER 1 INTERNAL THERMAL 2 EXTERNAL INK JET gt 1
30. INSTRUCTIONS 9 3 Get Graphic Timing Results Using Thermal Printer Table 9 5 Plot Chart and Tabulated Report STEP OPERATION ACTION DISPLAY GET TIMING RESULTS PRESS 2 KEY 1 PRINT TEST RESULTS 2 PLOT FULL CHART 3 PLOT EXPANSION 4 PLOT 0 200 MS PLOT FULL CHART PRESS 2 KEY SELECT PRINTER 1 INTERNAL THERMAL 2 EXTERNAL INKJET PRINT CHART ON THERMAL PAPER PRESS 1 KEY PLEASE WAIT PLOTTING GRAPH RETURN TO MAIN MENU AFTER NO ACTION 1 TIME BRKR PRINT CHART 2 GET RSLT 3 SET UP 4 DIAGNOSTIC Note 1 Figure 9 4 shows a timing chart of a circuit breaker with contact activity on channel 1 and 3 CT channel is also shown on this chart Since this print out was generated to show both Quick Shot mode and Time Travel mode both CT time and contact travel readings are shown on this chart 2 To get a graphic report on the ink jet color printer press key 2 in step 2 31 Rev 2 Jan 2001 OPERATING INSTRUCTIONS MODEL CT 7500 JOU uo orudeJs nBij SMEGSITIN O6 6 Qu 6 069 O os Oc Oc 0 eBeyoA jeybiq LA Josuas 9Y v JUANG ejeniu 9281 12205 Rev 2 Jan 2001 32 OPERATING INSTRUCTIONS MODEL CT 7500 ZLE L A9H LGE6 E26 606 XV3 066 556 606 191 0002 66 8661 0 YS
31. N oue1uQ 02 emu gt U 083911 N S 111024912 BE 50800351 111 099 009 0359 003 0 00 0 9000 8 LOHS 0007 04 00 098 008 51710539 ONIWIL 90 H2 90 HO f v0 HO HO 20 10 9 Rev 2 Jan 2001 Figure 9 5 Typical Graphic Report Ink Jet Printer 33 MODEL 7500 OPERATING INSTRUCTIONS 190 MILLISECONDS 180 Analvsis Point 1 16 150 140 N p d i i 0 i 2 L i oOo C Figure 9 6 Expansion Graph from 0ms to 200 Thermal Printer Note Analysis point 1 and point 2 is shown on chart 34 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS CONTACT CLEAR TIME CT CONTACT CLOSED RESISTOR CLOSED CONTACT AND OPEN RESISTOR OPENED CONTACT TIME RESISTOR ON TIME RESISTOR TIME Figure 9 7 Open Timing Shot Graphics Interpretation CONTACT CLOSED RESISTOR CLOSED CONTACT AND RESISTOR OPENED RESISTOR TIME RESISTOR TIME CLOSED lt gt CONTACT TIME CT CONTACT CLOSE TIME gt Figure 9 7A Close Timing Shot Graphics Interpretation 35 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS OPEN CL
32. NU PRESS 3 KEY ANALYSIS POINTS MEASUREMENT UNITS SAVE RESTORE NEXT PAGE PRESS 3 KEY SAVE SHOT RESTORE SHOT SHOT DIRECTORY ERASE SHOT PRESS 4 KEY ENTER SHOT NUMBER TO BE ERASED XXXX ENTER TO CONFIRM PRESS KEY 0 9 TO SELECT SHOT NUMBER PRESS ENTER CONFIRM ERASE SHOT XXXX TEST YYYY DATE MM DD YY HH MM ENTER TO CONFIRM PRESS ENTER ERASE IN PROCESS PLEASE WAIT WAIT FOR SHOT BEING ERASED NO ACTION ERASE COMPLETE PRESS ANY KEY 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTIC 41 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 8 Recall a Breaker Test Plan A breaker test plan contains breaker maximum minimum operating parameters A typical list of operating parameters is shown as follows m Max Min Contact Resistor Trip Time B Max Min Contact Resistor Close Time E Max Contact Spread Time Max Resistor Contact Spread Time m Max Min Stroke m Max Min Trip Velocity m Close Velocity m Max Min Over Travel Max Min Bounce Back B Trip Analysis Points B Close Analysis Points By recalling a Test Plan before testing a user doesn t have to set analysis points to calculate the Trip or Close velocity of the circuit breaker contacts Since a Test Plan contains other breaker test parameters the test report also displays a Pass Fail status for each parameter tested Table 9 10 Recalling a Test Plan OPERATION ACTION DISPLAY SELECT
33. O MAIN MENU PRESS STOP KEY 1 TIME BREAKER 2 GET RESULT 3 SET UP 4 DIAGNOSTIC Notes 1 The CT 7500 will also print the test report with the thermal printer 2 A contact closure is shown as C on the LCD and printout 3 An open contact is shown as on the LCD and printout 58 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 21 Automatic Print Setting The CT 7500 can be set to print graph and tabulated results automatically after timing a breaker To turn on Auto Print Results mode follows steps in table below Table 9 22 Automatic Print Setting STEP OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY ANALYSIS POINT MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT NEXT PAGE PRESS 4 KEY SHOT DESCRIPTION NUMBER OF CHANNELS COMPUTER IF CLOCK 5 PRINT SELECT SET PRINT PRESS 5 KEY SET PRINT MODE 1 AUTOMATIC PRINT 2 BY REQUEST ONLY SELECT AUTOMATIC PRINT PRESS 1 KEY 1 TIME BREAKER 2 GET RESULT 3 SET UP 4 DIAGNOSTIC Note Select print BY REQUEST ONLY will disable Automatic Print mode 59 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 10 0 Running CT 7500s in Tandem For timing application requiring more than 12 timing contact channels the user can use two or more CT 7500s to time a circuit breaker A typical application is to use a CT 7500 12 and a CT 7500 6 to time a 18 contact ATB To time this circuit break
34. OPERATING INSTRUCTIONS For the Model CT 7500 A Digital Circuit Breaker Analyzer vi VOLTAGE INPUT 00 n T2 TRANSDUCER INPUT eye RS 232C PRINTER CT 7500 Manufactured by Vanguard Instruments Co Inc 1711 Grevillea Ct Ontario California 91761 TEL 909 923 9390 Jan 2001 FAX 909 923 9391 Rev 2 MODEL 7500 OPERATING INSTRUCTIONS TABLE OF CONTENTS 1 0 INTRODUCTION lll sese 000000000002 1 2 0 C T 7900 DESCRIPTION I u E 2 1 On Line Timing Quick Shot Mode a u e tae tct e 2 2 Time Versus Travel Circuit Breaker Analyzer Mode 2 2 Contact Timing Chann els J 2 2 1 Analog Voltage Monitoring 2 2 2 3 Digital Voltage Monitoring Channel 2 2 4 Trip Close Current Monitoring 2 2 2 2 5 Travel Transducer Input Channels 2 2 2 6 Breaker Initiate Capability 2 2 2 7 Built In Thermal Printer 3 3 3 3 3 3 AE A 2 2 9 Computer Interface Capabilities 2 2 10 Timing Shots Storage Capabilities 2 2 11 Breaker Test Plan Storage Abilities 2 2 12 Diagnostic Capabilities 2 2 13 CT 7500 Display Control Switches
35. OSE CONTACT DEAD TIME CONTACT OPENED TIME RESISTOR OPENED TIME RESISTOR CLOSED TIME CONTACT CLOSED TIME CONTACT LIVE TIME CLOSE OPEN RESISTOR CLOSED TIME CONTACT CLOSED TIME CONTACT OPENED TIME gt RESISTOR OPENED TIME Figure 9 8 Open Close and Close Open Timing Shot Graphics Interpretation 36 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 4 Save Timing Shot in EEPROM Table 9 6 Save Timing Shot In EEPROM OPERATION ACTION DISPLAY SELECT SAVE RECALL MENU PRESS 3 KEY ANALYSIS POINTS MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT SAVE MENU PRESS 3 KEY SAVE SHOT RECALL SHOT SHOT DIRECTORY ERASE SHOT CONFIRM SAVING SHOT PRESS ENTER SAVE IN PROCESS KEY PLEASE WAIT RETURN TO MAIN MENU PRESS ANY KEY 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTIC Notes Timing shot storage capability varies depending upon the size of the shots The CT 7500 will assign an ID for each of the shots stored in EEPROM SELECT SAVE SHOT PRESS 1 KEY SAVE SHOT XXXX TEST CLOSE DATE MM DD YY HH MM ENTER TO CONFIRM 37 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 5 Print EEPROM Timing Shot Directory Table 9 7 Print Timing Shot Directo STEP OPERATION ACTION DISPLAY DETECT SAVE RESTORE MENU PRESS 3 KEY ANALYSIS POINT MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT S
36. On Thermal Printer 39 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 6 Recall a Timing Shot The following steps are used to recall a timing shot stored in EEPROM to working memory Once a timing shot is recalled the user can ask for test results from the thermal printer or the color ink jet printer Table 9 8 Recall a Timing Shot OPERATION ACTION DISPLAY SELECT SETUP MENU PRESS 3 KEY ANALYSIS POINT MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT SAVE RESTORE SHOT PRESS 3 KEY SAVE SHOT RESTORE SHOT SHOT DIRECTORY ERASE SHOT SELECT RESTORE SHOT PRESS 2 KEY ENTER SHOT NUMBER TO BE RESTORED XXXX ENTER TO CONFIRM ENTER SHOT NUMBER TO BE PRESS KEY 0 TO 9 ENTER SHOT NUMBER TO BE RESTORED RESTORED FOR SHOT ID THE XXXX ENTER KEY ENTER TO CONFIRM CONFIRM SHOT TO BE RESTORED PRESS ENTER RESTORING SHOT XXXX KEY TEST YYYY DATE MM DD YY HH MM ENTER TO CONFIRM RETURN TO MAIN MENU PRESS ANY KEY 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTICS 40 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 7 Deleting a Timing Shot Users can delete a specific timing shot from the CT 7500 EEPROM memory by using the steps described in the table below Table 9 9 Delete a Timing Shot STEP OPERATION ACTION DISPLAY SELECT SET UP MENU SELECT SAVE RESTORE MENU SELECT ERASE SHOT ENTER SHOT NUMBER CONFIRM ERASE SHOT RETURN TO MAIN ME
37. PC software manual 2 0 CT 7500 Description 2 1 On line Timing Quick Shot mode A clamp on AC current probe connected to the breaker bushing CT lets the CT 7500 measure breaker switching time while the breaker s still in service The CT 7500 can time an OPEN operation by sensing the time when the OPEN coil is energized until the bushing CT current returns to zero CLOSE time is detected when the close coil is energized until the bushing CT current is detected This Quick Shot mode provides a quick way to diagnose breaker performance and savings in maintenance cost 2 2 Time Versus Travel Circuit Breaker Analyzer Mode The CT 7500 applies a 35Vdc voltage to each of the contact channels This test voltage is sensed by an analog to digital converter A D to determine the state of the contact close or open or insertion resistor The CT 7500 records the A D reading at a 10 KHz rate and stores these readings in memory The contact resistor time is then derived from data stored in memory The CT 7500 uses three up down counters to sense the breaker s transducer reading The CT 7500 travel transducer employs an optical encoder to send quadrature signals to the CT 7500 s counters With the use of the digital transducer and counters the user never has to set up 1 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS or calibrate the transducer The CT 7500 has a built in initiate circuit to operate circuit breakers Since this
38. ROM Up to 20 test plans can be stored in a CT 7500 Consult the CT 7500 software manual for further details Follow the steps in the Table 9 15 below to put the CT 7500 under computer control Table 9 15 Selecting or Aborting Computer Control OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY 1 ANALYSIS POINT 2 MEASUREMENT UNITS 3 SAVE RESTORE 4 NEXT PAGE SELECT NEXT PAGE PRESS 4 KEY 1 SHOT DESCRIPTION 2 NUMBER OF CHANNELS 3 COMPUTER IF 4 CLOCK 5 PRINT SELECT COMPUTER INTERFACE PRESS 3 KEY COMPUTER IF MODE STOP TO ABORT Notes 1 An interconnect cable must be run between Timer s RS 232C port and a compatible IBM PC 2 Refer to the Breaker timing software manual for the software to run on the IBM compatible computer 3 The CT 7500 s RS 232 connector pinout is in the chart at 4 The operator is required to put the CT 7500 under Tx computer control before executing the PC program 49 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 14 Breaker Travel Analysis The CT 7500 travel analysis includes breaker stroke over travel bounce back and contact wipe distances and contact velocity calculation 9 14 1 Breaker Stroke The CT 7500 uses a digital transducer to measure a breaker s contact stroke over travel and bounce back The digital transducer output is 200 counts per linear inch of travel the resolution is accurate to 1 200 inch The output resolution is 0 01 inch
39. al paper roll and place this paper roll in paper holder m Lift thermal head and align thermal paper if necessary m Reinstall printer cover Note Thermal paper will show a red stripe to indicate Close to End of Paper 7 6 CT 7500 LCD Contrast Control To Darken the LCD display press and hold the T PAPER LCD switch for two seconds to lighten the LCD display press and hold the PAPER LCD switch for two seconds 12 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 8 0 TEST HOOKUP CONNECTIONS 8 1 Contact Cable Hookup A typical contact cable connection to a circuit breaker is shown in Figure 8 1 NOTE It is advisable to ground one side of the contacts for most testing If a breaker is floating i e ungrounded ensure contact channel inputs are protected against static discharge A typical series contact connection is shown in Figure 8 2 8 2 Initiate Cable Hookup A CT 7500 will trip or close breakers with a solid state device which will operate on any ac or dc control voltage from 10 to 300 volts Both the trip and close circuits are protected by 3 ampere fuses A typical dc trip and dc close control circuit test hookup is shown in Figure 8 3 A typical dc trip and ac close control circuit is shown in Figure 8 4 8 3 Analog Voltage Monitor Hookup The analog voltage input V1 lets users monitor breaker s dc control voltage during operation The analog voltage input V1 will record the norminal
40. ard or B Press and release the PAPER LCD key will backward advance thermal paper E Press and release the PAPER LCD key will move thermal paper backward QA 62 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 1 1 5 AP2 3 5 5 TRAVEL 1 SPACE TRAVEL 1 SPACE 1 4 INCH ENERGIZED n APPENDIX A ITE Circuit Breaker model 14 4K Timing Chart CONTACT PENETRATION ______ i 1 1 8 INCHES 1 8 POINT 1 CONTACT INDICATION _ Two OPENING CURVE Tot RATED CONTROL tT T 1 T 1 1 2 VOLTAGE I 1 1 L 44 ELI I U u 8 POINT rend annm ee CLOSING CURVE RATED CONTROL STROKE T VOLTAGE Ee Ee ee ee Il T 4 5 7 8 5 T MEASURED OVER 2 INCHES OF TRAVEL AFTER 1 1 2 INCHES OF CONTACT TRAVEL 11111 a Si SESI SEE WE Eli __ LC L1 1X SEd
41. ays turn on the rest of the timing channels and transducer channels by following steps shown in table below Table 9 14 Select Channel Configuration OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY ANALYSIS POINTS MEASUREMENT UNIT SAVE RESTORE NEXT PAGE SELECT NEXT PAGE PRESS 4 KEY SHOT DESCRIPTION NUMBER OF CHANNELS COMPUTER IF SET CLOCK SELECT NUMBER OF CHANNEL PRESS 2 KEY NUMBER OF CHANNELS 3 CONTACTS 6 CONTACTS 12 CONTACTS SELECT 3 CHANNELS OR 6 CHANNELS OR 12 CHANNELS PRESS 1 OR 2 OR TRANSDUCER 1 3 KEY TRANSDUCER 1 2 TRANSDUCER 1 2 3 SELECT 1 TRANSDUCER 2 3 55 1 2 TIME 3 KEY RSLT SET UP DIAGNOSTIC 48 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 13 Computer Interface Each CT 7500 has an RS 232C port A Breaker Analysis Software package provided with the CT 7500 allows an IBM PC to communicate with a CT 7500 This software operating under Windows 95 Windows 98 Windows Me Windows 2000 and Windows NT environment allows users to upload timing shots stored in EEPROM to the IBM PC From the user s IBM PC the user can now re analyze breaker timing shots and output timing report through an office printer Since timing shots are stored in an office PC users can create a data base of a breaker s timing history A breaker s test plan can also be downloaded and stored in the CT 7500 EEP
42. dc voltage at no load and the minimum dc voltage while the Trip or Close coil is energized Nominal and minimum voltage readings will print on a tabulated report Analog waveform will also plot in a graphic report This lets the user see the breaker s dc control voltage dip under load Problems such as a poor connection or an excessive voltage drop during operation can thus be easily detected A typical voltage monitoring hook up is shown on Figure 8 5 NOTE Maximum voltage recorded is 255 Vdc 8 4 Digital Voltage Monitor Hookup The Digital V2 voltage input channel lets users monitor the voltage ON OFF state The voltage ON OFF state will be plotted on the graphic report A typical hook up is shown on Figure 8 5 8 5 External Trigger Input External trigger mode lets a user start a recording when the CT 7500 senses a voltage A typical application for this external trigger mode is to time a circuit breaker in a close operation and to start timing only when the close coil is energized bypassing the 52X relay delay time Since the 52X relay carries the close coil current the user wants to connect the CT 7500 s initiate cable to the close terminal figure 8 4 The CT 7500 will energize the 52X relay to start the close operation The CT 7500 then will start the timing when it senses the voltage across the closing coil See Figure 8 6 for a typical test hookup Another application for external trigger is to start timing the breaker when t
43. e open command 3 The OPEN CLOSE OPEN operations can be initiated by the CT 7500 using a programmable delay between each of the operations e g delays between OPEN to CLOSE and between CLOSE to OPEN 23 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 1 1 Timing an OPEN Operation With No Insertion Resistor Table 9 1 Open Operation With No Resistor STEP OPERATION ACTION DISPLAY READY TIMER FOR BREAKER OPERATION PRESS 1 KEY INSERTION RESISTOR 1 NO 2 YES SELECT NO INSERTION RESISTOR PRESS 1 KEY TIMING WINDOWS 1 WINDOW 1 SECOND 2 WINDOW 10 SECONDS SELECT 1 SECOND WINDOW PRESS 1 KEY 1 INTERNAL TRIGGER 2 EXTERNAL TRIGGER SELECT INTERNAL TRIGGER PRESS 1 KEY TIMING MODE 1 OPEN 2 CLOSE 3 0 4 0 5 SELECT OPEN OPERATION PRESS KEY 1 OPEN TIMING Hold ARM Switch Then START STOP to ABORT INITIATE OPEN COMMAND HOLD ARM KEY AND TEST IN PROGRESS PRESS START KEY Hold ARM Until Test complete Up to 15 seconds ANALYZER IS READY TO OUTPUT RESULTS 1 TIME BREAKER 2 GET RESULT 3 SET UP 4 DIAGNOSTIC Note One second timing windows are used for breaker timing 10 second timing windows are used for circuit switcher timing 24 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 1 2 Timing an OPEN Operation With Insertion Resistors The CT 7500 can time breakers with insertion resistors The insertion resistor range is 10 to 7000 ohms
44. er the user can use the following steps Connect the CT 7500 12 to phase A and B of the circuit breaker Connect the CT 7500 6 to phase C on the circuit breaker Connect the CT 7500 12 initiate cable to the breaker control circuit The CT 7500 12 will operate the circuit breaker Connect the external trigger cable of the CT 7500 6 to the OPEN coil for the OPEN test or CLOSE coil for the CLOSE test The CT 7500 6 will operate as the slave device Set the CT 7500 6 to start a test using External Trigger Set the CT 7500 12 to start a test using Internal Trigger Press the START key on the CT 7500 6 to start the sequence then press the START key and hold the ARM switch on the CT 7500 12 The CT 7500 12 will operate the circuit breaker and start the timing sequence The CT 7500 6 will start its timing sequence as soon as it senses the voltage applied to the breaker coil The timing report of the CT 7500 12 will show the contact time for phase A and B The timing report of the CT 7500 6 shows contact time for phase C If the user down loads the test results of both the CT 7500s to the PC the user then can combine the 2 test reports to generate a 18 channel test report 60 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 11 0 CT 7500 Trouble Shooting Guide 1 CT 7500 will not trip or close breaker B Make sure you hold the ARM switch down during test B Check OPEN or CLOSE fuses B Check i
45. hart for Circuit Breaker Model V Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS APPENDIX E Timing Chart for Siemens TCP 149 Circuit Breaker 6 0 cycle 100 ms maximum Close gt AP1 Contact Point Pole B Contact E Z b Breaker Stroke 10 ms 0 6 cycles FOIE Gren E a Distance between 1 amp 2 ERD AP2 Contact 10 Contact travel indication Sample Travel Analyzer Record For a Closing Operation Example of Close Operation Record Calculation For Contact Closing Velocity 31 5 Calculation For overtravel rebound 31 5 p meter second Note b and may measured any consistant units Note Velocity calculation for this breaker requires a formula V 31 5 x a b m s Rev 2 Jan 2001 MODEL 7500 INSTRUCTIONS APPENDIX CT 7500 Test Plan for Siemens TCP 149 Circuit Breaker TEST PLAN NUMBER 2 mF Fea TCP 232 1 SIEMENS COMMENT CONTACT TIME PARAMETERS lt m gt lt m gt DELTA LIM lt m gt RESISTOR TIME PARAMETERS MAS lt m gt MIN lt m gt DELTA LIM lt 5 gt 1 TRAVEL PARAMETERS im 22 17 27 88
46. he user trips or closes the breaker remotely 13 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS NOTE Minimum trigger voltage is set for 30 V ac dc Maximum continous voltage is 300Vac dc Different trigger voltages can be set at the factory based on specific requests from users The CT 7500 will start looking for the external trigger input voltage after the CT 7500 Initiate Sequence is completed CT 7500 stops beeping after the user presses START key and message LOOKING FOR TRIGGER VOLTAGE is shown on LCD This external trigger voltage needs to be sensed by the CT 7500 within 5 second after the Initiate sequence The CT 7500 will return to main menu if no voltage is sensed 8 6 AC Current Sensor Hookup A clamp on AC current sensor connecting to the breaker bushing CT allows the CT 7500 to sense breaker bushing current The AC current sensor requires a 100mA current to operate Maximum current is 25 amperes Typical hookup is shown on figure 8 8 14 Rev 2 Jan 2001 OPERATING INSTRUCTIONS MODEL CT 7500 BLK RED BLK RED BLK RED 67 7500 Typical 3 Phase Breaker Hookup Figure 8 1 Typical Single Break Contact Cable Hookup RED BLK BLK RED Typical Series Contact Hookup Figure 8 2 Typical Series Contacts Test Cable Hookup Rev 2 Jan 2001 15 MODEL 7500 OPERATING INSTRUCTIONS OPEN INITIATE CLOSE
47. hecking the Cable Hookup Table 9 22 Automatic Print Setting MODEL 7500 OPERATING INSTRUCTIONS MODEL 7500 OPERATING INSTRUCTIONS 1 0 Introduction The Model CT 7500 is a microprocessor based digital time versus travel Circuit Breaker Analyzer with a special on line test mode This on line test mode Quick Shot mode allows the user to capture breaker contact close time and contact open clear time while the breaker is still in service In the off line test the Model CT 7500 fully analyzes utility circuit breaker performance contact time stroke velocity over travel bounce back and contact wipe Contact motion analysis includes Open Close Open Close Close Open and Open Close Open A timing window is selectable between 1 second or 10 second periods The 10 second window allows timing of long events e g circuit switcher contacts The CT 7500 is available in three models CT 7500 3 three contact channels CT 7500 6 six contact channels CT 7500 12 twelve contact channels All the CT 7500 models have the following input Three Digital Travel Transducer Input channels B One Analog Voltage Monitor Input channel B One Digital Voltage Monitor Input channel B One Trip Close current monitor channel There are two modes of operation for the CT 7500 Stand Alone Mode and Computer Control Mode This manual will focus on the CT 7500 Stand Alone Mode The Computer Control Mode is covered under the CT 7500
48. ker specifications need not be referenced to compare test results to determine if a breaker passed A breaker test plan can be created by using the Breaker Analysis Software supplied with each CT 7500 The test plan is then loaded into the CT 7500 via an RS 232C serial port 2 2 12 Diagnostic Capabilities The CT 7500 can run diagnostics on its own electronics Self testing of contact cable hook ups and transducers lets users checkout CT 7500 accessories whenever verification is required 3 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 2 2 13 CT 7500 Display and Control Switches An alpha numeric keypad lets the user enter name plate data Substation name Breaker Model etc and control function A 4 line by 20 character LCD readout displays user messages The LCD is back lighted so messages can be viewed in low light levels 3 0 Test Result Tabulation 3 1 Electrical Measurement Results Each CT 7500 contact channel provides the following test results Contact Close time Quick Shot Mode E Contact Open Clear time Quick Shot Mode B Main contact and insertion resistor contact times Time Travel Test Contact bounce time Time Travel Test Contact spread time Time Travel Test NOTE The CT 7500 can detect insertion resistors in a 10 7000 ohm range Resistances over 7000 ohms are detected as an open contact 3 2 Mechanical Measurement Results Each digital transducer channel provides
49. le to the user 1 PERCENTAGE OF STRK 2 DISTANCE FROM CLOSE The selection of analysis point No 2 is the same as for analysis point No 1 NOTE 1 Average velocity through the arc zone is calculated by using the following formula Distance Time 2 The current breaker contact velocity will be recalculated based on data stored in memory RAM after any new analysis point s is selected The user does NOT need to operate the breaker again to acquire new contact velocity data after changing the analysis points a new velocity is calculated from travel data stored in memory from the last operation 3 For complex velocity calculations the user can download a test plan to the CT 7500 from an IBM PC This test plan can be recalled and used to calculate a breaker s contact velocity 51 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 15 Set Up Open Analysis Points Table 9 16 Setting Up OPEN Analysis Points Using Distance STEP OPERATION ACTION DISPLAY SELECT SET UP MENU PRESS 3 KEY ANALYSIS POINT MEASUREMENT UNITS SAVE RESTORE NEXT PAGE SELECT ANALYSIS POINT PRESS 1 KEY OPEN TIMING CLOSE TIMING PRINT SETTING TEST PLAN SELECT OPEN ANALYSIS PRESS 1 KEY OPEN ANALYSIS PT 1 1 PERCENT OF STROKE 2 DISTANCE FROM CLOSE 3 CONTACT 1 SELECT DISTANCE FROM CLOSE PRESS 2 KEY OPEN ANALYSIS PT 1 DISTANCE FROM CLOSE VALUE XX XX in ENTER TO CONFIRM ENTER 1 INCH PRESS
50. n resistor time is measured 15 Trigger mode is internal timing window starts at the same time the CT 7500 energized the circuit breaker 29 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS BREAKER TIMING RESULTS 60 Hz SHOT NUMBER 0007 DATE 12 22 00 TIME 10 35 03 COMPANY STATION Pass Fail on Contact Parameters ITE 14 4 5500 208 CH TIME CYCLE mS 1 029 50 01 77 FAIL 000 20 00 49 2 033 10 01 99 PASS 000 20 00 72 3 033 00 01 98 PASS 000 30 00 71 8 000 00 00 00 FAIL 000 00 00 00 6 BOUNCE WIPE m Cin 000 00 00 00 FAIL 000 00 00 00 000 00 00 00 FAIL 000 00 00 00 Contact Delta Time 003 60 PASS n STROKE in 07 00 PASS 00 00 FAIL 00 00 FAIL SPEED ft S 09 11 PASS 00 00 PASS 00 00 PASS OVER TRAVEL in 00 02 PASS 00 00 PASS 00 00 PASS BOUNCE BACK in 00 00 PASS 00 00 PASS 00 00 PASS SPEED ANALYSIS POINT 1 01 50 in POINT 2 03 50 in V1 NOMINAL VOLTAGE 0 VOLTS INITIATOR CURRENT 05 2 AMPS SHOT LENGTH 1 SECOND INSERTION RESISTOR NO TRIGGER INTERNAL Pass Fail on Travel Parameters V1 MINIMUM VOLTAGE 0 VOLTS Vanguard Instruments Co Inc Ontario CA USA C 1998 99 2000 Tel 909 923 9390 FAX 909 923 9391 Rev 1 312 Figure 9 3 Typical tabulated Printout of an Open Operation on Ink jet Printer 30 Rev 2 Jan 2001 MODEL 7500 OPERATING
51. n travel transducer B Bad transducer Try TRANSDUCER test B Transducer slider is not secured to timing rod B Transducer is not secured properly 8 No activity on V2 voltage input channel B The V2 voltage input channel requires a voltage change to above 30v to see activities on the timing chart 61 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS Problems Suggestion ________ 9 No PASS FAIL on tabulated report load test plan then re print the tabulated report 10 CT 7500 will not communicate with PC B Make sure CT 7500 is under computer control Make sure your PC com port is selected correctly B Make sure your serial cable is connected properly 11 Turn on Automatic Print Results mode See section 9 21 12 CT 7500 will not print results on external printer B The CT 7500 will support HP ink jet printer only E Check your printer cable 13 Where can get some thermal paper E Call the factory at 909 923 9390 or BG Instruments at 509 893 9881 The CT 7500 uses TP 4 thermal paper In case of an emergency you get thermal paper from Radio Shack Radio Shack carries 4 25 wide thermal paper It is not the right size but it will work 14 How do darken or lighten the LCD B Press and hold the PAPER LCD key for 3 seconds will darken LCD B Press and hold the PAPER LCD key for seconds will lighten LCD 15 How do move thermal paper forw
52. nitiate leads For a Positive Trip circuit one Close lead and one Open lead should be connected to the Positive of the power supply B Check initiate leads For a Negative Trip circuit one Close lead and one Open lead should be connected to the Negative of the power supply 2 No contact time 0 ms in Trip or Close test B Make sure one side of breaker in not grounded B Make sure the breaker operates on OPEN or Close test only A dual operation OPEN CLOSE or CLOSE OPEN will resulting in Oms reading Bad CT 7500 contact channels or bad cables Try CHECK HOOK UP test 3 No contact time 0 ms in Close Open B Make sure breaker contacts complete the transition from Open initial state to Close then Open final state You can see this transition by looking at the timing chart B Make sure the contact close state is longer than 10ms The CT 7500 has a 10ms de bounce time any contact state less than or equal to 10ms is invalid If you have this problem your delay time is probably too slow B Try Close Open using contact channel 1 option 4 Select Open Close test The breaker opens and will B Delay between Open to Close is probably too not close small Increase delay time 5 No tabulated and timing chart for contact channels B The CT 7500 always defaults to contact channels above 3 1 2 and 3 You need to turn on contact channels above 3 m Turn on travel channel 2 and 3 7 No data or erratic reading o
53. nput Results The Digital Voltage Input channel V2 monitors voltage on off conditions and graphs the result A voltage level above 30Vdc is considered as ON condition This input channel is dedicated to monitor breaker s auxiliary switch action during breaker s operation NOTE Input voltage range is 1 0 300 V ac dc 3 5 Initiate Current Results The CT 7500 not only plots Trip or Close current waveforms but also prints steady state current readings of trip and close coils during operation NOTE 1 If the CT 7500 initiates the OPEN test or CLOSE test under the Quick Shot test the test report will show OPEN or CLOSE coil current reading and current wave form 2 the user operates the breaker for the Quick Shot test external trigger no coil current reading or waveform will be recorded 3 6 Slow Close Test A slow close test finds the contact touch distance and penetration by using the travel transducer and dry contact channels 4 0 Test Results Graphics 4 1 Thermal Printer Graphic Printout A 4 5 wide built in thermal printer prints graphic waveforms of contact channels travel curves and actuator coil currents With a zoom graphics mode the user can select an enlargement by specifying the timing zone 4 2 Ink Jet Printer Output A color graphic report can be printed on the HP Ink jet printer supplied with each 7500 The CT 7500 will print color graphics of contact channels travel channels current waveforms on
54. ontact travel from fully opened position to contact touch position and contact wipe or penetration distance This test requires the operator manually jack the breaker s contact from the fully open position to the fully closed position Contact channel 1 2 3 and transducer channel 1 will be used for this test The CT 7500 will measure the contact touch and contact wipe penetration of each contact channel Contact touch is the distance measured from contact fully open to the first position contact channel electrically closed Contact wipe or penetration distance is measured from the contact position first electrically closed to the final closed latching position Table 9 19 Performing a Slow Close Test STEP OPERATION ACTION DISPLAY SELECT DIAGNOSTIC MENU PRESS 4 KEY 1 SLOW CLOSE TEST 2 PRINT DATA 3 TEST TRANSDUCER 4 CHECK HOOK UP SELECT SLOW CLOSE TEST PRESS 1 KEY BREAKER SLOW CLOSE TEST RMV CB GND 1 SIDE ENTER TO BEGIN START SLOW CLOSE TEST PRESS ENTER KEY CONTACT 1 CONTACT 2 CONTACT 3 0PEN LIFT TO CLS BREAKER NOW CONTINUE TO CLOSE BREAKER NO ACTION LIFT BRKR TO CLS POS THEN PRESS ENTER TO FIND CONTACT WIPE RETURN TO MENU NO ACTION 1 TIME BRKR 2 GET RSLT 3 SET UP 4 DIAGNOSTIC Notes The user can also save a slow close test report in EEPROM typical report of a slow close test is shown on next page 56 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS
55. ose Open 3 travel transducer channels Linear motion 0 0 60 0 0 01 inches Rotary Range 0 360 0 36 Measures Slow Close contact point distance Hard Copy Analysis software runs on IBM compatible Software package for graphic numerical reports and database utility for shop or office RS 232C Port Back lighted LCD screen 4 lines by 20 characters sunlight viewable Contact travel waveforms amp tabulated results print on 4 5 inch thermal paper Built in parallel printer port CT 7500 produces both graphic and tabulated test results in color on 8 5 by 11 inches paper via external ink jet printer Hard shipping case for both CT 7500 and Travel Transducer 9 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS WARRANTY One year warranty on parts and labor post warranty service contracts available 10 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 7 0 CT 7500 Special Features 7 1 CT 7500 Operating Voltages The CT 7500 operating voltage is selectable between 110 120 V 50 60 Hz or 220 240 V 50 60 Hz Voltage selection is set by one jumper connector on the Initiate PCB JP3 and one jumper connector on the Power Supply PCB JP1 Jumper setting for both connectors is shown in table 7 1 Table 7 1 Voltage Selection Jumper Setting VOLTAGE SELECTION CONNECTOR PIN 110 120 Vac Pin 1 amp 2 3 amp 4 220 240 Vac Pin 2 amp 3 Note Operating voltage is set from the factory 7 2 CT 7500 Main Powe
56. r An Ink Jet printer is supplied with each CT 7500 2 2 9 Computer Interface Capabilities A built in RS 232C port lets timing shots stored in 7500 to down loaded to IBM compatible PC Windows based Windows 95 Windows 98 Windows Me Windows 2000 and Windows NT Breaker Analysis Software is supplied with the CT 7500 This software allows the user to B Time Circuit breakers from a PC B Retrieve timing shots stored in CT 7500 B Recall timing shots from a hard drive for re analysis at an office PC Create breaker test plans on a PC and load into the CT 7500 2 2 10 Timing Shots Storage Capabilities The CT 7500 uses Electrical Erasable PROMs to store timing shot data Unlike other media EEPROMs are immune to temperature shock and humidity Stored shots can be recalled to reanalyze test data to re print test reports or transfer data to an IBM compatible PC for record keeping Up to 200 timing shots can be stored in the EEPROMs The number of shots stored in 5 can vary depending on the size of the shot records 2 2 11 Breaker Test Plan Storage Abilities Up to 45 breaker s test plans can be stored in the CT 7500 Test plans comprise breaker specifications i e stroke velocity contact time By recalling and using a test plan operators can immediately test breakers and view a pass fail report made by comparing test performance with specifications in the test plan Brea
57. r Fuse The CT 7500 uses an AC input module containing the AC receptacle Power switch and Protective fuse Replacement fuse should be 20mm 2A 250Vac slow blow 7 3 CT 7500 Printer and Printer Paper The CT 7500 built in thermal printer uses 4 5 inch wide thermal paper for printing test results To maintain the highest quality test result printing and to avoid paper jamming the use of paper supplied by our factory is highly recommended Additional paper can be ordered from either of the two sources listed below Vanguard Instruments Co Inc 1710 Grevillea Court Ontario CA 91761 Tel 909 923 9390 Fax 909 923 9391 Part Number TP 4 Paper OR BG Instrument Co 13607 E Trent Avenue Spokane WA 99216 Tel 509 893 9881 Fax 509 893 9803 Part Number TP4 paper 7 4 CT 7500 Printer Paper Control To advance paper from the printer press and release the T PAPER LCD switch to retract the paper from the printer press and release PAPER LCD switch 11 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 7 5 Replacing CT 7500 Thermal Paper The thermal paper roll is residing in the pocket under the printer cover To replace the thermal paper roll follow these steps Remove printer cover Remove leftover thermal paper roll from paper holder m Unroll new thermal paper roll m Feed thermal paper into the slot between the paper pocket and roller The printer will pull paper under the thermal head Roll therm
58. sidered as OFF status 2 2 4 Trip Close Current Monitoring A built in Hall effect sensor records Trip and Close coil current levels and duration The breaker s operate coil current waveform is graphically plotted on a printout Current reading is also printed in the tabulated report 2 2 5 Travel Transducer Input Channels Each CT 7500 has 3 digital transducer input channels These transducer channels require neither setup nor calibration 2 2 6 Breaker Initiate Capability A built in solid state initiate device lets users operate a breaker from the CT 7500 Operational modes include Open Close Open Close Close Open Open Close Open Multiple operations 2 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS e g Open Close Close Open Open Close Open can be initiated with a programmable delay time or by sensing the breaker s contact state Because solid state switching is used in the initiate circuitry the CT 7500 can switch a breaker s ac or control circuit Each trip and close circuit is protected by a 3 ampere fuse The initiate circuit is also protected by an interlock ARM switch 2 2 7 Built in Thermal Printer A 4 5 inch wide thermal printer prints the breaker s contact analysis results in both tabular and graphic formats 2 2 8 Printer Port A parallel printer port can drive a H P color ink jet printer from which a color graphic of timing charts and tabulated results can be printed on 875 11 inch pape
59. solid state circuit is controlled by the micro processor the CT 7500 can perform multiple operations O C C O O C O with ease Each Trip and Close initiate circuit is fuse protected The user is also required to hold the ARM switch during a test to complete the initiate circuit The CT 7500 can also store up to 200 breaker timing test records and 45 breaker test plans in FLASH EEPROM Stored timing test records can be recalled and printed or transferred to the PC Using the breaker test plan during a test the users do not have to set the velocity calculating points The CT 7500 will also print PASS and FAIL results on test report 2 2 1 Contact Timing Channels A breaker s interruption of contacts is timed with the dry contact input channels Each channel can detect the main contacts and insertion resistor contacts times in millisecond and cycles Note The CT 7500 can detect insertion resistors in a 10 7000 ohm range Resistances over 7000 ohms are detected as an open contact 2 2 2 Analog Voltage Monitoring Channel An analog voltage input is dedicated to monitoring a breaker s dc power supply or coil voltages 0 255 V dc or peak ac Note Input voltage range is 0 300Vdc or peak AC Reading range is 0 255Vdc 2 2 3 Digital Voltage Monitoring Channel One digital voltage input channel monitors voltage on off status Voltage threshold from 30 255 Vdc is considered as ON status Voltage threshold less than 30 Vdc is con
60. th No Resistor OPERATION ACTION DISPLAY PRESS 1 KEY INSERTION RESISTOR 1 NO 2 YES PRESS 1 KEY TIMING WINDOWS 1 WINDOW 1 SECOND 2 WINDOW 10 SECONDS SELECT INTERNAL TRIGGER PRESS 1 KEY TIMING MODE 1 OPEN 2 CLOSE 3 0 4 0 5 SELECT CLOSE OPEN OPERATION PRESS 4 KEY C O SECOND TRIGGER 1 CONTACT 1 CLOSE 2 SET DELAY 3 NO DELAY SELECT CONTACT 1 CLOSE PRES 1 KEY CLOSE OPEN TIMING Hold ARM Switch Then START STOP to ABORT INITIATE OPEN COMMAND HOLD ARM KEY AND TEST IN PROGRESS PRESS START KEY Hold ARM Until Test complete Up to 15 seconds ANALYZER IS READY TO OUTPUT RESULTS 1 TIME BREAKER 2 GET RESULT 3 SET UP 4 DIAGNOSTIC Note 1 Users can program a delay from 10 to 500 ms between the CLOSE and OPEN commands When a delay is used in this operation it may not represent a true breaker condition 2 Users can also program in no delay for this operation in which case the CLOSE and OPEN QA 26 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS commands are initiated at the same time The breaker will start closing the OPEN circuit is then enabled by the A B switch allowing the OPEN operation 9 2 Get Tabulated Timing Results Using Thermal Printer Table 9 4 Get Tabulated Results OPERATION ACTION DISPLAY GET TIMING RESULTS PRESS 1 KEY 1 PRINT TEST RESULTS 2 PLOT FULL CHART 3 PLOT EXPANSION 4 PLOT 0 200 MS PRINT TABULATED RESULTS PRESS
61. the following test results B Breaker stroke Time Travel Test B Over travel Time Travel Test E Bounce back Time Travel Test Contact wipe Time Travel Test B Velocity Time Travel Test Breaker contact speed calculation is based on a contact s travel distance over a period of time which is defined by the manufacturer s specifications A CT 7500 not only calculates simple distance over time speeds but can also support other formulas An example is Siemen TCP breaker calculation formula V 12 2 x alb The formula and analysis points can be stored in a test plan for use later in the field NOTE If operators use a breaker test plan see paragraph 9 8 during testing the test report will also indicate a Pass Fail condition for each test parameter i e contact time stroke velocity etc 3 3 Analog Voltage Input Results The analog voltage input channel V1 measures the breaker s dc control voltage during operation Printed voltage readings include nominal voltage supply voltage at no load and minimum voltage supply voltage under load or when a coil is energized This connection allows the user to monitor the DC power supply voltage fluctuation during breaker s operation This feature is handy to detect breakers power supply problem which QA 4 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS normally can not be seen using a volt meter NOTE Voltage reading range 1 1 0 255 V 3 4 Digital Voltage I
62. tup are discussed in the following paragraphs 9 14 6 Analysis Point Selections Analysis points are used to calculate average contact speed through the contact s arc zone The analysis points are usually specified by the breaker manufacturers The analysis points are fully programmable in the Timer by the user The Timer will store two setups for calculating velocity one each for open and close These setups remain in the Timer s RAM memory until changed by the operator 50 Rev 2 Jan 2001 MODEL 7500 OPERATING INSTRUCTIONS 9 14 7 Analysis Point No 1 Three selections are available to the user for setting analysis point No 1 1 PERCENTAGE OF STRK 2 DISTANCE FROM CLOSE 3 CONTACT 1 a Percentage of Stroke Percentage of stroke is distance based upon percentage of total breaker stroke distance This distance is always measured from the starting point at the fully closed position of the breaker contacts b Distance From Close Distance from Close range is selectable from 00 0 inch to 99 99 inches or from 0 0 centimeter to 99 90 centimeters Again this distance is referenced from the contact s closed position c Contact Point 1 Contact point is the distance from the contact s closed position to the point where it is in transition from close to open or open to close position Contact channel 1 will be used for this selection 9 14 8 Analysis Point No 2 Only two selections for analysis point 2 are availab
Download Pdf Manuals
Related Search