DIGITMRTM DIGITAL CIRCUIT BREAKER ANALYZER USER’S MANUAL Vanguard Instruments Company, Inc. 1520 S. Hellman Ave.
DIGITMR USER’S MANUAL REV 3 SAFETY SUMMARY FOLLOW EXACT OPERATING PROCEDURES Any deviation from the procedures described in this User’s Manual may create one or more safety hazards, may damage the DigiTMR, damage the test transformer, or cause errors in the test results. Vanguard Instruments Company, Inc. assumes no liability for unsafe or improper use of the DigiTMR.
REV 3 DIGITMR USER’S MANUAL TABLE OF CONTENTS CONVENTIONS USED IN THIS DOCUMENT ..................................................................................... 1 1.0 INTRODUCTION .................................................................................................................... 2 1.1 General Description and Features ................................................................................... 2 1.2 Operational Modes .............................................................
DIGITMR USER’S MANUAL REV 3 3.8.4. Erasing a Timing Shot From the DigiTMR’s EEPROM ............................................. 49 3.8.5. Erasing All Timing Shots from the DigiTMR’s EEPROM .......................................... 51 3.8.6. Entering Shot Description Information .................................................................. 53 3.9 Working with Breaker Test Plans ................................................................................... 56 3.9.1.
REV 3 DIGITMR USER’S MANUAL LIST OF FIGURES Figure 1. DigiTMR Controls and Indicators ..................................................................................... 8 Figure 2. Voltage Selection Jumper Settings and Initiate Relay ................................................... 10 Figure 3. Contact Cable Connections ............................................................................................ 12 Figure 4. DC Trip and DC Close Initiate Circuit Cable Connections ....................
DIGITMR USER’S MANUAL REV 3 CONVENTIONS USED IN THIS DOCUMENT This document uses the following conventions: • A key or switch on the DigiTMR is indicated as [KEY]. • Menu options are referenced as (MENU OPTION). • Screen and menu names are referenced as “SCREEN/MENU NAME”. • The terms “test record” and “test shot” are used interchangeably. • DigiTMR LCD screen output is shown as: 1. OPTION 2. OPTION 3. OPTION 4.
REV 3 DIGITMR USER’S MANUAL 1.0 INTRODUCTION 1.1 General Description and Features The DigiTMR is a microprocessor-based, time-versus-travel, circuit breaker analyzer. In QuickShot Mode (optional), the DigiTMR has the capability of online testing and can capture the breaker’s trip or close time, the trip/close-coil current “fingerprint,” and the battery supply voltage while the breaker is still in service.
DIGITMR USER’S MANUAL REV 3 Analog Voltage Monitoring Channel One analog voltage monitoring channel, designated as “V1”, is dedicated to monitoring the breaker’s DC power supply, or coil voltages from 0 to 255 Vdc or peak Vac. Test results can be printed and include nominal voltage (when the supply voltage has no load), and minimum voltage (when the supply voltage is under load or when a coil is energized).
REV 3 DIGITMR USER’S MANUAL NOTE If a breaker test plan is used during testing, test results are compared with the specifications in the test plan, and a “Pass” or “Fail” indicator is printed on the test report based on the results of this comparison. Breaker Initiate Capability A built-in, solid-state, initiate device is used to operate a breaker from the DigiTMR. Operational modes include Open, Close, Open-Close, Close-Open, and Open-Close-Open.
DIGITMR USER’S MANUAL REV 3 Computer Interface The DigiTMR can be computer-controlled via its RS-232C interface. A Windows® XP/Vista-based Circuit Breaker Analysis software application (VCBA) is provided with each unit. Using this software, circuit breakers can be timed from the PC. Test records can be retrieved from the DigiTMR and then stored on the PC for future analysis and report generation. Circuit breaker test plans can also be created on the PC and transferred to the DigiTMR.
REV 3 1.2 DIGITMR USER’S MANUAL Operational Modes 1.2.1. Quick-Shot Mode In Quick-Shot (online) mode, the trip/close time is derived from the time of trip, or close-coil initiation, to the breaker’s bushing current-break-or-make as detected by an AC clamp-on current sensing probe. The DIGITMR can time a circuit breaker’s OPEN operation by sensing the time when the OPEN coil is energized until the bushing CT current returns to zero.
DIGITMR USER’S MANUAL 1.4 REV 3 Technical Specifications Table 1. DigiTMR Technical Specifications TYPE Circuit-breaker analyzer PHYSICAL SPECIFICATIONS 18”W x 7”H x 15”D (45.7 cm x 17.8 cm x 38.1 cm); Weight: less than 19 lbs (8.
REV 3 1.5 DIGITMR USER’S MANUAL DigiTMR Controls and Indicators The DigiTMR’s controls and indicators are shown in Figure 1 below. A leader line with an index number points to each control and indicator, which is cross-referenced to a functional description in Table 2. The table describes the function of each item on the control panel. The purpose of the controls and indicators may seem obvious, but users should become familiar with them before using the DigiTMR.
DIGITMR USER’S MANUAL REV 3 Table 2. Functional Descriptions of DigiTMR Controls and Indicators Item Number Panel Markings 1 RS-232C 2 CONTACT INPUT Functional Description 9-pin serial computer interface 16-pin female connector for the 3 contact channels. 3 300V MAX V1 and V2 3-pin connectors. Each input is a voltage detector for the timing voltages of the trip or close coil switching during the active period. Voltage detection levels range from 30 to 300 Vdc or peak.
REV 3 DIGITMR USER’S MANUAL 2.0 PRE-TEST SETUP 2.1 Operating Voltages The DigiTMR’s operating voltage is preset at the factory and is selectable between 100-120 Vac, 50/60 Hz or 200-240 Vac, 50/60 Hz. To set the proper operating voltage, the voltage selection jumper must be configured properly as shown in Table 3. The initiate relay with the correct operating voltage is also required. The jumper connector is shown in Figure 2 and is marked as “JP3/VOLT SEL” on the circuit board. Table 3.
DIGITMR USER’S MANUAL 2.4 REV 3 Printer Paper Control To advance the DigiTMR’s printer paper, press and release the [PAPER ∧ Contrast] key. To retract the DigiTMR’s printer paper, press and release the [PAPER ∨ Contrast] key. 2.5 Printer Paper The DigiTMR’s built-in thermal printer uses 4.5-inch wide thermal paper for printing test results. To maintain the highest print quality and to avoid paper jams, the use of thermal paper supplied by Vanguard Instruments Company is highly recommended.
REV 3 DIGITMR USER’S MANUAL 3.0 OPERATING PROCEDURES 3.1 DigiTMR Cable Connections 3.1.1. Contact Cable Connections A typical contact cable connection to a circuit breaker is shown in Figure 3. Red clips are connected to phase A, B, and C of the breaker’s bushings. The black clips are connected to the ground or common side of the bushings. If the common side of the bushing is not grounded, jumpers should be installed between the bushings.
DIGITMR USER’S MANUAL REV 3 3.1.2. Initiate Cable Connections The DigiTMR will trip or close breakers through a solid-state device which will operate on any AC or DC control voltage ranging from 10 to 300 Volts. Both the trip and close circuits are protected by 5-Ampere fuses. A typical DC trip and DC close control circuit test connection is shown in Figure 4. A typical DC trip and AC close control circuit is shown in Figure 5. Figure 4.
REV 3 DIGITMR USER’S MANUAL Figure 5.
DIGITMR USER’S MANUAL REV 3 3.1.3. Analog and Digital Voltage Monitor Connections The analog voltage input “V1” can monitor a breaker’s DC control voltage during an operation. The analog input records the nominal DC voltage at no load and the minimum DC voltage while the Trip or Close coil is energized. Nominal and minimum voltage readings can be printed on a tabulated report. Analog waveforms can also be plotted graphically.
REV 3 DIGITMR USER’S MANUAL 3.1.4. External Trigger Input Connections The External Trigger Mode can be used to start recording when the DigiTMR senses a voltage. A typical application for the External Trigger Mode is to time a circuit breaker in a close operation and to start timing only when the close coil is energized, thus bypassing the 52X relay delay time. Since the 52X relay carries the close coil current, the initiate cable must be connected to the close terminal as shown in Figure 4.
DIGITMR USER’S MANUAL REV 3 3.1.5. AC Current Sensor Connection The DigiTMR can sense a breaker’s bushing current by using a clamp-on AC current sensor connected to the breaker’s bushing CT. The AC current sensor is used in Quick-Shot Mode only. The AC current sensor requires a minimum of 100 mA to operate. The maximum current is 25 Amperes. A typical AC sensor connection is shown in Figure 8. Figure 8.
REV 3 DIGITMR USER’S MANUAL 3.1.6. Transducer Connection A typical transducer connection is shown in Figure 9. See Appendix F for additional transducer illustrations. Figure 9.
DIGITMR USER’S MANUAL 3.2 REV 3 General Procedures The main steps for timing a circuit breaker are listed in Figure 10 below. Connect the DigiTMR • Ground the DigiTMR (see note) • Connect the DigiTMR cables to the circuit breaker • Install the transducer and cable Apply Power • Turn on the power for the DigiTMR. Once the unit goes through its start-up cycle, the “Start-Up” menu will be displayed.
REV 3 3.4 DIGITMR USER’S MANUAL Timing Breakers in Time-Travel Mode The DigiTMR can initiate the breaker operation and perform a timing test on the following operations: • • • • • OPEN CLOSE OPEN-CLOSE CLOSE-OPEN OPEN-CLOSE-OPEN NOTES 20 • The DigiTMR can start the OPEN-CLOSE operations without a delay or by using a programmable delay between the OPEN and CLOSE commands.
DIGITMR USER’S MANUAL 3.5 REV 3 Performing Timing Tests 3.5.1. Timing an OPEN Operation With No Insertion Resistors To time an OPEN operation with no insertion resistors: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [1] key (TIME BRKR) to start a test. If a previous test shot is in the DigiTMR’s memory, the following screen will be displayed: PREV SHOT NOT SAVED 1. SAVE SHOT 2. CONTINUE (NO SAVE) 1.
REV 3 DIGITMR USER’S MANUAL If you do not wish to save the test shot in memory, press the [2] key, and then continue to step b. b. The following screen will be displayed: INSERTION RESISTOR? 1. NO 2. YES Press the [1] key (NO) to indicate that there is no insertion resistor. c. The following screen will be displayed: TIMING WINDOW: 1. WINDOW = 1 SEC 2. WINDOW = 10 SEC 3. WINDOW = 20 SEC Press the [1] key (WINDOW = 1 SEC) to select the 1-second timing window.
DIGITMR USER’S MANUAL REV 3 f. The following screen will be displayed: OPEN TIMING Hold “ARM” switch, then “START”. “STOP” to ABORT Press and hold down the [ARM] switch, and then press the [START] key. Continue to hold down the [ARM] switch. g. The following screen will be displayed during testing: Test in Progress Hold “ARM” until test complete. (Up to 25 seconds) Continue to hold down the [ARM] switch until the test is completed. h.
REV 3 DIGITMR USER’S MANUAL 3.5.2. Timing an OPEN Operation WITH Insertion Resistors The DigiTMR can time breakers with insertion resistors. The insertion resistor can range from 10 to 7,000 Ohms. Any insertion resistor greater than 7,000 Ohms is detected as an open circuit. When a breaker with insertion resistors is timed, the timing window results show the main contact timing and the insertion resistor contact timing.
DIGITMR USER’S MANUAL REV 3 e. The following screen will be displayed: TRIGGER MODE: 1. Internal Trigger 2. External Trigger Press the [1] key (Internal Trigger) to select the internal trigger. f. The following screen will be displayed: TIMING MODE 1. OPEN 2. CLOSE 3. O-C 4. C-O 5. O-C-O Press the [1] key (OPEN) to select the OPEN timing operation. g. The following screen will be displayed: OPEN TIMING Hold “ARM” switch, then “START”.
REV 3 DIGITMR USER’S MANUAL 3.5.3. Timing a CLOSE-OPEN Operation Using Contact Channel #1 The CLOSE-OPEN operation of a breaker simulates a condition where a breaker is closed on a fault. To time a CLOSE-OPEN operation: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [1] key (TIME BRKR) to start a test. b. The following screen will be displayed: INSERTION RESISTOR? 1. NO 2. YES Press the [1] key (NO). c.
DIGITMR USER’S MANUAL REV 3 f. The following screen will be displayed: C-O Second Trigger: 1. Contact #1 CLOSE 2. Set DELAY 3. No DELAY Press the [1] key (Contact #1 CLOSE). NOTES Option details • Contact #1 CLOSE The open operation is initiated after contact channel #1 is closed. If this option is selected, the DigiTMR will first initiate a CLOSE command and then send an OPEN command only when it detects that the main contact #1 is closed.
REV 3 DIGITMR USER’S MANUAL 3.5.4. Timing an OPEN-CLOSE-OPEN Operation To time an OPEN-CLOSE-OPEN operation: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [1] key (TIME BRKR) to start a test. b. The following screen will be displayed: INSERTION RESISTOR? 1. NO 2. YES Press the [1] key (NO). c. The following screen will be displayed: TIMING WINDOW: 1. WINDOW = 1 SEC 2. WINDOW = 10 SEC 3.
DIGITMR USER’S MANUAL REV 3 f. The following screen will be displayed: O-C Delay in mS: (10 – 350) mSec ENTER when done Using the numeric keypad, enter the delay time (in milliseconds) between the OPENCLOSE operation, and then press the [ENTER] key. g. The following screen will be displayed: C-O Delay in mS: (10 – 350) mSec ENTER when done Using the numeric keypad, enter the delay time (in milliseconds) between the CLOSEOPEN operation, and then press the [ENTER] key. h.
REV 3 3.6 DIGITMR USER’S MANUAL Performing Diagnostic Tests 3.6.1. Performing a Slow-Close Test The DigiTMR offers a unique feature called a “Slow-Close” test. This test can measure the distance of a breaker’s contact travel from the fully open position to the contact “touch” position and contact wipe, or penetration distance. The test requires the operator to manually jack the breaker’s contact from the fully open position to the fully closed position.
DIGITMR USER’S MANUAL CONTACT CONTACT CONTACT LIFT TO REV 3 1: CLOSED 2: CLOSED 3: OPEN CLS BRKR NOW After all of the contacts have been closed, the following screen will be displayed: LIFT BRKR TO CLS POS THEN PRESS “ENTER” TO FIND CONTACT WIPE LIFT TO CLS BRKR NOW Fully close the breaker. When the breaker is at the close position (on latch), press the [ENTER] key to find contact wipe. e. The test results will be printed, and you will be returned to the “START-UP” menu.
REV 3 DIGITMR USER’S MANUAL 3.6.2. Performing a Transducer Self-Test The transducer electronics can be checked by connecting the transducer to the DigiTMR and running a “Test Transducer” diagnostic test. To test the transducer: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [4] key (DIAGNOSTICS). b. The following screen will be displayed: 1. SLOW CLOSE TEST 2. CHECK HOOKUP 3. TEST TRANSDUCER 4. NEXT PAGE Press the [3] key (TEST TRANSDUCER).
DIGITMR USER’S MANUAL REV 3 3.6.3. Checking Cable Hookups To check the cable hookups: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [4] key (DIAGNOSTICS). b. The following screen will be displayed: 1. SLOW CLOSE TEST 2. CHECK HOOKUP 3. TEST TRANSDUCER 4. NEXT PAGE Press the [2] key (CHECK HOOKUP). c. The following screen will be displayed: MAKE SURE BREAKER IS IN CLOSED POSITION THEN PRESS “START” Press the [START] key. d.
REV 3 3.7 DIGITMR USER’S MANUAL Printing Test Results After a timing test has been performed, the test results can be printed in graphical or tabulated format on the DigiTMR’s built-in thermal printer. 3.7.1. Printing the Tabulated Test Results To print the tabulated test results from the last test performed: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [2] key (GET RSLT) to get the last test results. b.
DIGITMR USER’S MANUAL REV 3 Figure 12.
REV 3 DIGITMR USER’S MANUAL Table 4. Descriptions of Tabulated Test Results Elements Item Number 36 Description 1 Contact time shown in both milliseconds and cycles. In the sample report shown in Figure 12, contact channel #1 time is 181.50 ms or 10.89 cycles. 2 Contact bounce duration (1.70 ms). 3 Contact wipe (0.77 inches). 4 Delta time - the slowest contact and fastest contact differential time (0.10 ms).
DIGITMR USER’S MANUAL REV 3 3.7.2. Printing the Graphic Test Results To print the tabulated test results from the last test performed: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [2] key (GET RSLT) to get the last test results. b. The following screen will be displayed: 1. PRINT TEST RESULTS 2. PLOT FULL CHART 3. PLOT EXPANSION 4. PLOT 0 – 200MS Press the [2] key (PLOT FULL CHART).
REV 3 DIGITMR USER’S MANUAL • NOTES • • If the results are from a test using the 1 second window, the graph will be from 0 to 1000 ms with 50 ms time markers. If the results are from a test using the 10 second window, the graph will be from 0 to 10 sec with 500 ms time markers. If the results are from a test using the 20 second window, the graph will be from 0 to 20 sec with 1 second time markers. d. When the printer is done printing the graphic test results, you will be returned to the “START-UP” menu.
AC Current Sensor Digital Voltage Channel V2 Analog Voltage Channel V1 Travel Trace Initiate Current Trace Contact Trace DIGITMR USER’S MANUAL REV 3 Figure 13.
DIGITMR USER’S MANUAL Analysis Point #2 Analysis Point #1 REV 3 Figure 14.
DIGITMR USER’S MANUAL REV 3 Figure 15. Graphic Interpretation of an OPEN Timing Shot Figure 16.
REV 3 DIGITMR USER’S MANUAL Figure 17.
DIGITMR USER’S MANUAL 3.8 REV 3 Working with Timing Shots 3.8.1. Saving Timing Shots in the DigiTMR’s EEPROM After performing a test, the test shot can be saved in the DigiTMR’s EEPROM by using the steps below: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [3] key (SAVE / RESTORE). c.
REV 3 DIGITMR USER’S MANUAL The following screen will be displayed when the shot has been saved: SHOT SAVED Press the [ENTER] key. f. You will be returned to the “START-UP” menu. NOTE 44 Timing shot storage capability varies depending on the size of the shots. The DigiTMR will automatically assign a test shot number for each shot stored in the EEPROM.
DIGITMR USER’S MANUAL REV 3 3.8.2. Printing a Timing Shot Directory of Shots Stored in the EEPROM A listing of all the shots stored in the DigiTMR’s EEPROM can be printed on the built-in thermal printer using the steps below: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [3] key (SAVE / RESTORE). c.
REV 3 DIGITMR USER’S MANUAL e. The following screen will be displayed while the directory is being printed: PRINTING ABBREVIATED DIRECTORY “STOP” TO QUIT When printing has finished, you will be returned to the “START-UP” menu. Figure 18.
DIGITMR USER’S MANUAL REV 3 3.8.3. Recalling a Timing Shot From the DigiTMR’s EEPROM You can recall a stored test shot to the working memory by using the steps below: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [3] key (SAVE / RESTORE). c. The following screen will be displayed: 1. SAVE SHOT 2.
REV 3 DIGITMR USER’S MANUAL f. The following screen will be displayed while the shot is being restored: RESTORING SHOT #0001 Once the shot has been restored, the following screen will be displayed: RESTORE COMPLETE Press the [ENTER] key. g. The shot will be loaded in the working memory, and you will be returned to the “STARTUP” menu.
DIGITMR USER’S MANUAL REV 3 3.8.4. Erasing a Timing Shot From the DigiTMR’s EEPROM Use the steps below to erase (delete) a specific timing shot from the DigiTMR’s EEPROM: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [3] key (SAVE / RESTORE). c. The following screen will be displayed: 1. SAVE SHOT 2.
REV 3 DIGITMR USER’S MANUAL f. The following confirmation screen will be displayed: ERASE SHOT # 0001 TEST: OPEN DATE: 04/21/09 09:27 “ENTER” TO CONFIRM Press the [ENTER] key to confirm. g. The following screen will be displayed while the test shot is being erased: ERASE IN PROGRESS PLEASE WAIT The following screen will be displayed after the test shot has been erased: ERASE COMPLETE Press the [ENTER] key. h. You will be returned to the “START-UP” menu.
DIGITMR USER’S MANUAL REV 3 3.8.5. Erasing All Timing Shots from the DigiTMR’s EEPROM Use the steps below to erase (delete) all timing shots from the DigiTMR’s EEPROM: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [3] key (SAVE / RESTORE). c. The following screen will be displayed: 1. SAVE SHOT 2.
REV 3 DIGITMR USER’S MANUAL f. The following screen will be displayed while the test shots are being erased: ERASE IN PROGRESS PLEASE WAIT... 62 When all test shots have been erased, the following screen will be displayed: ERASE COMPLETE ANY KEY TO CONTINUE Press any key on the numeric keypad. You will be returned to the “START-UP” menu.
DIGITMR USER’S MANUAL REV 3 3.8.6. Entering Shot Description Information A test shot stored in the DigiTMR’s EEPROM can also store breaker and other identification information. Additional information usually consists of the company name, station, circuit, manufacturer, breaker model number, breaker serial number, and the operator’s name. This identification information is saved with the timing shot and also printed on the header section of the tabulated report.
REV 3 DIGITMR USER’S MANUAL e. The following screen will be displayed: Enter STATION name: _ UP/DOWN TO POSITION “ENTER” TO CONTINUE Type the station name using the alpha-numeric keypad, and then press the [ENTER] key. f. The following screen will be displayed: Enter CIRCUIT name: _ UP/DOWN TO POSITION “ENTER” TO CONTINUE Type the circuit name using the alpha-numeric keypad, and then press the [ENTER] key. g.
DIGITMR USER’S MANUAL j. REV 3 The following screen will be displayed Enter OPERATOR name: _ UP/DOWN TO POSITION “ENTER” TO CONTINUE Type the operator name using the alpha-numeric keypad, and then press the [ENTER] key. k. The shot description information will be saved, and you will be returned to the “STARTUP” menu. NOTE Once the test record description is entered and saved, it will be stored in nonvolatile memory (even if the unit’s power is turned off) and will apply to all new test records.
REV 3 3.9 DIGITMR USER’S MANUAL Working with Breaker Test Plans A breaker test plan is comprised of all circuit-breaker performance specifications (stroke, velocity, and contact time).
DIGITMR USER’S MANUAL REV 3 c. The following screen will be displayed: 1. OPEN TIMING 2. CLOSE TIMING 3. PRINT SETTINGS 4. TEST PLANS Press the [4] key (TEST PLANS). d. The following screen will be displayed: 1. LOAD TEST PLAN 2. PRINT TEST PLAN 3. PRINT DIRECTORY Press the [1] key (LOAD TEST PLAN). e. The following screen will be displayed: LOAD TEST PLANS “UP” or “DOWN” To SCROLL... “ENTER” TO SELECT Press the [PAPER ∧ Contrast] or [PAPER ∨ Contrast] key to scroll through the list of stored test plans.
REV 3 DIGITMR USER’S MANUAL 3.9.2. Printing a Breaker Test Plan To print a breaker test plan: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [1] key (ANALYSIS POINTS). c. The following screen will be displayed: 1. OPEN TIMING 2. CLOSE TIMING 3. PRINT SETTINGS 4.
DIGITMR USER’S MANUAL REV 3 Figure 19.
REV 3 DIGITMR USER’S MANUAL 3.9.3. Printing the Breaker Test Plan Directory Follow the steps below to print a directory of all the test plans stored in the DigiTMR’s EEPROM: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [1] key (ANALYSIS POINTS). c. The following screen will be displayed: 1.
DIGITMR USER’S MANUAL 3.10 REV 3 Changing Setup Parameters 3.10.1. Setting Up Analysis Points Analysis points are used to calculate the average contact velocity through the contact’s arc zone. The analysis points are usually specified by the breaker’s manufacturer. The user can enter the analysis points, and the DigiTMR will store the two setup points for calculating velocity, one set each for the open and close operations.
REV 3 DIGITMR USER’S MANUAL c. The following screen will be displayed: 1. OPEN TIMING 2. CLOSE TIMING 3. PRINT SETTINGS 4. TEST PLANS Press the [1] key (OPEN TIMING) NOTE If you would like to see the current AP1 and AP2 settings, press the [3] key (PRINT SETTINGS). The settings will be printed on the thermal printer, and you will be returned to the “START-UP” menu. d. The following screen will be displayed: OPEN ANALYSIS PT 1 1. PERCENT OF STROKE 2. DIST FROM CLOSE 3.
DIGITMR USER’S MANUAL REV 3 f. The following screen will be displayed: OPEN ANALYSIS PT 2 1. PERCENT OF STROKE 2. DIST FROM CLOSE 3. CONTACT +/- TIME Press the [2] key (DIST FROM CLOSE). NOTES Option details • PERCENT OF STROKE Percent of stroke is the distance based on the percentage of the total breaker’s stroke distance. The distance is always measured from the starting point at the fully closed position of the breaker contacts. • DIST FROM CLOSE The distance from Close range is selectable from 00.
REV 3 DIGITMR USER’S MANUAL 3.10.2. Setting the Measurement Units The DigiTMR supports both English and Metric calculations from the breaker’s travel parameters. To change the measurement units: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE Press the [2] key (MEASUREMENT UNITS). c.
DIGITMR USER’S MANUAL REV 3 If a rotary encoder (transducer) is used, the correct “distance/degree” value must be entered before timing the circuit breaker. NOTE Press the [1] key (ENGLISH (In./deg)) for English measurement units. The following screen will be displayed: INCHES/DEGREE 5.813 In/Deg Press the [CLEAR] key, and then type the desired value using the numeric key pad. Press the [ENTER] key, and you will be returned to the “START-UP” menu.
REV 3 DIGITMR USER’S MANUAL 3.10.3. Setting the DigiTMR’s Internal Clock The DigiTMR has an internal clock with a lithium battery. The battery lasts approximately three years. When a timing shot is stored in the EEPROM, the time and date are also stored with the shot. To set the clock, follow the steps below: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2.
DIGITMR USER’S MANUAL REV 3 3.10.4. Setting the Preferred Printing Method The DigiTMR can be configured to either print the test results automatically after each test, or to print them by user request. To set the preferred printing method: a. Start from the “START-UP” menu: 1. TIME BRKR 04/17/09 2. GET RSLT 10:49:23 3. SET-UP 4. DIAGNOSTICS Press the [3] key (SET-UP). b. The following screen will be displayed: 1. ANALYSIS POINTS 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4.
REV 3 4.0 DIGITMR USER’S MANUAL GLOSSARY OF TERMS Breaker Bounce-Back Distance Bounce-back is the distance the breaker contact moves before the resting position after the over-travel. Bounce-back is typically found in the close operation. Breaker Over-Travel Distance Over-travel is the distance the contact moves beyond the resting position. Over-travel is typically found in the close operation.
DIGITMR USER’S MANUAL 5.0 REV 3 DIGITMR TROUBLE-SHOOTING GUIDE PROBLEM DESCRIPTION Possible Causes and Suggested Solutions The DigiTMR will neither trip nor close the breaker. • Make sure you hold the “ARM” switch down during each test. • Check the OPEN or CLOSE fuses. • Check the initiate leads. For a “Positive Trip” circuit, one Close lead and one Open lead should be connected to the Positive side of the power supply. • Check the initiate leads.
REV 3 DIGITMR USER’S MANUAL No “PASS” or “FAIL” indicators on the tabulated report. • Test plan was not loaded before performing a test. Load a test plan and then re-print the tabulated report. How does one review the current analysis setting? • From the “START-UP” menu, press the [3] key (SETUP). • Press the [1] key (ANALYSIS POINTS). • Press the [3] key (PRINT SETTINGS). The current AP1 & AP2 settings will be printed. The transducer will not communicate with the PC.
DIGITMR USER’S MANUAL REV 3 APPENDIX Appendix A. ITE Circuit Breaker Model 14.4K Timing Chart AP1 = 1.5” AP2 = 3.
REV 3 DIGITMR USER’S MANUAL Appendix B. DigiTMR Test Plan for ITE Circuit Breaker Model 14.
DIGITMR USER’S MANUAL REV 3 Appendix C. DigiTMR Timing Chart for ITE Circuit Breaker Model 14.
REV 3 DIGITMR USER’S MANUAL Appendix D. DigiTMR Timing Chart for ITE Circuit Breaker Model 14.
DIGITMR USER’S MANUAL REV 3 Appendix E.
REV 3 DIGITMR USER’S MANUAL Appendix F. DigiTMR Transducer Illustrations Figure 21. Transducers Compatible with the DigiTMR Figure 22.
DIGITMR USER’S MANUAL REV 3 Figure 23. Rotary Transducer on Alstom HE 1014 Circuit Breaker Figure 24.
REV 3 DIGITMR USER’S MANUAL Figure 25. Westinghouse SFA Transducer Installation Figure 26.
DIGITMR USER’S MANUAL REV 3 Figure 27. Rotary Transducer on Megna Blast Breaker Figure 28.
REV 3 DIGITMR USER’S MANUAL Figure 29. Linear Transducer on Mitsubishi 500-SFMT Figure 30. Linear Transducer on Areva DT1-72.
1520 S. Hellman Ave • Ontario, CA 91761 • USA Phone: 909-923-9390 • Fax: 909-923-9391 www.vanguard-instruments.com Copyright © 2009 by Vanguard Instruments Company, Inc. DigiTMR User’s Manual • Revision 3.
