Related Manuals for Vanguard Instruments CT-7000
Summary of Contents for Vanguard Instruments CT-7000
- Page 1 OPERATING INSTRUCTIONS for the CT-7000 Digital Circuit Breaker Analyzer Vanguard Instruments Company 1710 Grevillea Court Ontario, California 91761 TEL: (909) 923-9390 October 2003 FAX: (909) 923-9391 Rev 3...
- Page 2 CT-7000. WARRANTY The CT-7000’s warranty is only valid to the original purchaser to be free from defects in material and workmanship for a period of one year. The warranty does not apply to normal wear or damage from misuse, abuse, improper storage, installation, accident, unauthorized repair or...
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Page 3: Table Of Contents
2.9 Timing Shots Storage Capabilities ................. 3 2.10 Breaker Test Plan Storage Abilities ................3 2.11 Diagnostic Capabilities ....................3 2.12 CT-7000 Display and Control Switches ............... 3 3.0 Test Result Tabulation ....................... 4 3.1 Electrical Measurement Results ..................4 3.2 Mechanical Measurement Results ................. - Page 4 9.14 Print a Breaker Test Plan ................... 51 9.15 Print a Breaker Test Plan Directory ................55 9.16 English/Metric or Rotary Transducer Selection ............56 9.17 Set CT-7000 Internal Clock ..................57 9.18 Slow-Close Test ......................58 9.19 Transducer Self-Test ....................59 9.20 Check Cable Hookup ....................
- Page 5 CT-7000 Operating Instructions List of Figures Figure 1.0 CT-7000 Control Panel ....................6 Figure 2.0 Contact Cable Connection ................... 12 Figure 3.0 Series Contact Cable Connection ................13 Figure 4.0 DC Trip and DC Close, Initiate Circuit Cable Hook-Up ..........14 Figure 5.0 DC Trip and AC Close, Initiate Circuit Cable Hook-Up ..........
- Page 6 CT-7000 Operating Instructions List of Tables Table 1.0 CT-7000 Controls and Displays ..................7 Table 2.0 CT-7000 Cable set ......................9 Table 3.0 Voltage Selection Jumper Setting ................. 10 Table 4.0 Open Operation With No Insertion Resistors ............... 20 Table 5.0 Open Operation With Insertion Resistor ............... 21 Table 6.0 Close-Open Operation Using Contact Channel #1 ............
- Page 7 APPENDIX E OPEN-CLOSE Tabulated Report for ITE Circuit Breaker Model 14.4K ....70 APPENDIX F SIEMENS TCP Breaker Velocity Calculation ............71 APPENDIX G SIEMENS SPS2 Breaker Velocity Calculation ............72 APPENDIX H CT-7000 SIEMENS SPS2 Test Plan ..............73 CT-7000 Transducer Illustration ................74 APPENDIX I...
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Page 8: Introduction
Mode is covered under the CT-6500/7000/7500/DIGITMR PC software manual. 2.0 CT-7000 Description The CT-7000 applies a test voltage of 35 Vdc to each of the contact channels thus allowing an analog to digital converter (A/D) to determine if a close, an open or an insertion resistor was the state of contact. -
Page 9: Contact Timing Channels
CT-7000 Operating Instructions The CT-7000 can also store up to 100 breaker timing test records and 99 breaker test-plans into the FLASH EEPROM. Stored timing records can be recalled, printed or transferred to a personal computer. Using the breaker test plan with a timing test, the users do not have to set the velocity calculating points. -
Page 10: Timing Shots Storage Capabilities
2.10 Breaker Test Plan Storage Abilities Up to 99 breaker’s test plan can be stored in the CT-7000. 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. -
Page 11: Test Result Tabulation
Breaker contact speed calculations are based upon a contact's travel distance over a period of time, which is defined by the manufacturer's specifications. A CT-7000 not only calculates simple distance over-time speeds, but can also support other formulas. An example is the Siemens SPS2 breaker calculation formula: V=12.2 x a/b... -
Page 12: Digital Voltage Input Results
Input voltage ranges from 1 to 300 Vac/dc. 3.5 Initiate Current Results The CT-7000 not only plots the trip or close current waveforms, but also prints the steady-state current readings of the trip and close coils during an operation. A typical circuit breaker timing report is shown on Figure 10.0. -
Page 13: Ct-7000 Controls And Display
CT-7000 Operating Instructions 5.0 CT-7000 Controls and Display Before using the CT-7000, users should become familiar with all of the controls and display indications. The keypad and display are used to operate the CT-7000. Figure 1.0 represents the control panel and the numbered lines pointing to each control and indicator refer to Table 1.0, which describes the function of each control and indicator. -
Page 14: Table 1.0 Ct-7000 Controls And Displays
CT-7000 Operating Instructions Table 1.0 CT-7000 Controls and Displays Fig. 1.0 PANEL MARKING FUNCTIONAL DESCRIPTION Index no. CONTACT INPUT Female connectors for the contact channels. (1 –12) 30-300V 3-pin connectors. Each input is a voltage detector for V1 & V2... -
Page 15: Ct-7000 Analyzer Specifications
HARD-COPY PRINTOUT Contact travel waveforms and tabulated results printout on 4.5 inch thermal paper. CARRYING CASE (optional) Hard shipping case for CT-7000 and cables. Hard shipping case for Travel Transducers. WARRANTY One year warranty on parts and labor. Post-warranty service contracts available. -
Page 16: Ct-7000 Special Features
CT-7000 Operating Instructions 7.0 CT-7000 Special Features 7.1 CT-7000 Supplied Cables Table 2.0 CT-7000 Cable set ITEM DESCRIPTION GND Cable Power Cord Contact Cable 3 or 6 or 12 Contact Extension Cable 3 or 6 or 12 Transducer cable Voltage & Trigger Leads Voltage &... -
Page 17: Ct-7000 Operating Voltages
The CT-7000 operating voltage is selectable between 110/120 Vac, 50/60 Hz or 220/240 Vac, 50/60 Hz. Voltage selection is set by the JP1 connector on the Power Supply board and the JP3 connector on the Initiate board of the CT-7000. The jumper settings for the connectors are shown in Table 3.0. -
Page 18: Ct-7000 Printer Paper Control
CT-7000 Operating Instructions 7.5 CT-7000 Printer Paper Control To advance the paper from the printer, press and release the “ ↑ PAPER LCD” button. retract the thermal paper from the printer, press and release the “ ↓ PAPER LCD” button. -
Page 19: Test Hook-Up Connections
CT-7000 Operating Instructions 8.0 Test Hook-up Connections 8.1 Contact Cable Hookup A typical, contact cable connection to a circuit breaker is shown in Figure 2.0. Red clips are connected to phase A, B and C of the breaker’s bushings. The black clips are connected on the grounded or common, side of the bushings. -
Page 20: Figure 3.0 Series Contact Cable Connection
CT-7000 Operating Instructions Figure 3.0 Series Contact Cable Connection... -
Page 21: Initiate Cable Hookup
CT-7000 Operating Instructions 8.2 Initiate Cable Hookup The CT-7000 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. -
Page 22: Analog Voltage Monitor Hookup
CT-7000 Operating Instructions 8.3 Analog Voltage Monitor Hookup The analog, voltage input, “V1” permits the user to monitor a breaker's DC control voltage during an operation. The analog, voltage input will record the nominal DC voltage at no load and the minimum DC voltage while the Trip or Close coil is energized. -
Page 23: External Trigger Input
52X relay delay time. Since the 52X relay carries the close coil current, the user will need to connect the CT-7000’s initiate cable to the close terminal shown in Figure 4.0. The CT-7000 will energize the 52X relay to start the close operation, which will then start the timing when the CT-7000 senses the voltage across the closing coil. -
Page 24: Transducer Connection
CT-7000 Operating Instructions 8.6 Transducer Connection A typical transducer connection is shown on Figure 8.0. See Appendix I for more transducer connections. Figure 8.0 Transducer Connection... -
Page 25: Operating Procedures
3. SAVE THE TIMING SHOT Figure 9.0 CT-7000 Operating Steps NOTE To reduce the possibility of damaging the CT-7000 contact channels due to static discharge in the high voltage substations, it is recommend to ground one side of the breaker’s bushings. -
Page 26: Timing A Circuit Breaker
CT-7000 Operating Instructions 9.1 Timing a Circuit Breaker The CT-7000 will initiate the breaker operation and do a timing test on the following operations: n OPEN n CLOSE n OPEN-CLOSE n CLOSE-OPEN n OPEN-CLOSE-OPEN NOTE 1. The CT-7000 can start the OPEN-CLOSE operations without a delay or by using a programmable delay between the OPEN and CLOSE commands. -
Page 27: Timing An Open Operation With No Insertion Resistors
CT-7000 Operating Instructions 9.1.1 Timing an OPEN Operation With No Insertion Resistors Table 4.0 Open Operation With No Insertion Resistors STEP ACTION DISPLAY OPERATION READY TIMER FOR BREAKER OPERATION. PRESS #1 KEY. INSERTION RESISTOR? 1.NO 2.YES SELECT NO INSERTION RESISTOR. -
Page 28: Timing An Open Operation With Insertion Resistors
ANALYZER IS READY TO OUTPUT RESULTS. NONE. 1.TIME BREAKER 2.GET RESULT 3.SET-UP 4.DIAGNOSTIC NOTE The user can set the CT-7000 to print tabulated and graphical reports automatically after it completes a test. See Paragraph 9.21 for the automatic print setting. -
Page 29: Timing Close-Open Operation Using Contact Channel #1
NOTE If the Contact #1 CLOSE choice is used, the CT-7000 will first initiate a CLOSE command and then send an OPEN command only when it detects that the main contact #1 is closed. The mode truly simulates when the breaker is closing on a fault... -
Page 30: Table 6.0 Close-Open Operation Using Contact Channel #1
CT-7000 Operating Instructions Table 6.0 Close-Open Operation Using Contact Channel #1 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 SEC 2.WINDOW = 10 SEC... -
Page 31: Timing Open-Close-Open Operation
CT-7000 Operating Instructions 9.1.4 Timing OPEN-CLOSE-OPEN Operation The OPEN-CLOSE-OPEN operation requires the user to enter two time-delays between the circuit breaker operations. The time delays are in millisecond intervals. The first delay is from the first OPEN command to the CLOSE command. The second delay is from the CLOSE command to the second OPEN command. -
Page 32: Get Tabulated Timing Results Using The Thermal Printer
CT-7000 Operating Instructions 9.2 Get Tabulated Timing Results Using the Thermal Printer The circuit breaker timing results can be printed on the thermal printer by using the steps listed in Table 8.0. A typical circuit breaker timing result printed on thermal printer is shown in Figure 10.0. -
Page 33: Figure 10.0 Typical Tabulated Printout Of An Open Operation From The Thermal Printer
CT-7000 Operating Instructions Figure 10.0 Typical Tabulated Printout of an Open Operation From the Thermal Printer... -
Page 34: Tabulated Results Interpretation
CT-7000 Operating Instructions 9.2.1 Tabulated Results Interpretation 1. Timing Record is time and date stamped by the CT-7000. 2. Timing record header information (Company, Substation name, Circuit, etc) is also saved with test record. 3. Timing test type (OPEN, CLOSE, O-C, C-O, O-C-O) is identified. An OPEN timing shot is shown in figure 10.0. -
Page 35: Figure 11.0 Typical Tabulated Printout Of An Open Operation From Ink Jet Printer
CT-7000 Operating Instructions Figure 11.0 Typical Tabulated Printout of an Open Operation From Ink Jet Printer... -
Page 36: Get Graphic Timing Results Using The Thermal Printer
CT-7000 Operating Instructions 9.3 Get Graphic Timing Results Using the Thermal Printer Selecting the “PLOT FULL CHART” command will plot the timing chart as follows: • Timing chart from 0 to 1000 ms with one second window and 50 ms time markers. -
Page 37: Figure 12.0 Typical Graphic Result From The Thermal Printer
CT-7000 Operating Instructions Figure 12.0 Typical Graphic Result From the Thermal Printer... -
Page 38: Figure 13.0 Typical Graphic Printout From The Ink Jet Printer
CT-7000 Operating Instructions Figure 13.0 Typical Graphic Printout From the Ink Jet Printer... -
Page 39: Figure 14.0 Expansion Graph From 0 To 200Ms From The Thermal Printer
CT-7000 Operating Instructions Figure 14.0 Expansion Graph From 0 to 200ms From the Thermal Printer NOTE Analysis point # 1 and point #2 are shown on chart. -
Page 40: Figure 15.0 Expansion Graph From 0 To 200Ms From Ink Jet Printer
CT-7000 Operating Instructions Figure 15.0 Expansion Graph From 0 to 200ms From Ink Jet Printer... -
Page 41: Figure 16.0 Graphical Interpretation Of An Open Timing Shot
CT-7000 Operating Instructions Figure 16.0 Graphical Interpretation of an Open Timing Shot Figure 17.0 Graphical Interpretation of a Close Timing Shot... -
Page 42: Figure 18.0 Graphical Interpretations Of An Open-Close And A Close-Open Timing Shot
CT-7000 Operating Instructions Figure 18.0 Graphical Interpretations of an Open-Close and a Close-Open Timing Shot... -
Page 43: Save Timing Shots In The Eeprom
1. TIME BRKR 2. GET RSLT 3. SET UP 4. DIAGNOSTIC NOTE Timing shot storage capability varies, depending upon the size of the shots. The CT-7000 will assign an identification number for each of the shots stored in the EEPROM. -
Page 44: Printing Timing Shot Directory Stored In The Eeprom
CT-7000 Operating Instructions 9.5 Printing Timing Shot Directory Stored in the EEPROM The user can obtain a timing-shot directory that was stored in the CT-7000’s FLASH EEPROM by using the following steps in Table 11.0. Table 11.0 Print Timing Shot Directory... -
Page 45: Figure 19.0 Printout Of The Timing Shot Directory From The Thermal Printer
CT-7000 Operating Instructions Figure 19.0 Printout of the Timing Shot Directory From the Thermal Printer... -
Page 46: Recalling A Timing Shot
CT-7000 Operating Instructions 9.6 Recalling a Timing Shot The following steps in Table 12.0 are used to recall a timing shot stored in the EEPROM to the working memory. Once a timing shot is recalled, the user can ask for a printout of the test results from the thermal printer. -
Page 47: Deleting A Timing Shot
CT-7000 Operating Instructions 9.7 Deleting a Timing Shot Users can delete a specific timing shot or all of the timing shots from the CT-7000’s EEPROM by using the steps described in Table 13.0. Table 13.0 Deleting a Timing Shot STEP... -
Page 48: Shot Description
CT-7000 Operating Instructions 9.8 Shot Description The CT-7000 has the capability for users to enter the breaker and other identification information. The data usually consists of the names of the company, station, circuit and manufacturer. Other information could be the breaker's model, serial number and the operator's name. - Page 49 CT-7000 Operating Instructions Table 14.0 Entering Shot Identification Header (Continued) STEP OPERATION ACTION DISPLAY ENTER BREAKER MODEL. PRESS KEYS 0-9 ENTER SERIAL NUMBER XXXX PRESS THE "ENTER" "ENTER" TO CONFIRM KEY TO CONFIRM. ENTER SERIAL NUMBER. PRESS KEYS 0-9 ENTER SERIAL NUMBER XXXX PRESS THE "ENTER"...
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Page 50: Computer Interface
COMPUTER ITF MODE "STOP" TO ABORT NOTES 1. An interconnect cable must be run between the CT-7000’s RS-232C port and an IBM-compatible PC. 2. Refer to the breaker timing software manual to run the unit remotely from an IBM- compatible computer. -
Page 51: Breaker Travel Analysis
The analysis points are usually specified by the breaker’s manufacturers. The analysis points can programmed into the CT-7000 by the user. The CT-7000 will store the two setup points for calculating velocity one set each for the open and another set for the close operations. -
Page 52: Analysis Point No.1 (Ap1)
CT-7000 Operating Instructions 9.10.7 Analysis Point No.1 (AP1) 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 the distance based upon the percentage of the total breaker’s stroke distance. - Page 53 3. For complex velocity calculations, the user can create a test plan using the CT- 7000 Breaker Analysis Software from a PC. The test plan then can be downloaded to the CT-7000. The complex breaker velocity calculation can now be executed easily by recalling the test plan before running the timing test.
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Page 54: Set-Up Open Analysis Points
CT-7000 Operating Instructions 9.11 Set-Up Open Analysis Points Table 16.0 Setting Up "OPEN" Analysis Points Using Distance STEP OPERATION ACTION DISPLAY SELECT SET UP MENU. PRESS # 3 KEY. 1. ANALYSIS POINT 2. MEASUREMENT UNITS 3. SAVE / RESTORE 4. NEXT PAGE SELECT ANALYSIS POINT. - Page 55 CT-7000 Operating Instructions NOTES 1. If an entry is not correct, re-enter the digits until the screen shows the desired numbers, then press the “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.
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Page 56: Circuit Breaker Test Plan
The user can create a circuit breaker test plan using the CT-7000 Breaker Analysis Software. Up to 99 circuit breaker test plan can be downloaded into the CT-7000. A test plan can be replaced by simply downloading a new test plan into the existing one. -
Page 57: Figure 20.0 Typical Test Results With Pass/Fail Printout
CT-7000 Operating Instructions STEP OPERATION ACTION DISPLAY SELECT LOAD TEST PLAN. PRESS # 1 KEY. LOAD TEST PLAN “ ∧ ” “ ∨ ” TO SCROLL "ENTER" TO SELECT PRESS “UP” or VIEW TEST PLAN HEADER. DISPLAY TEST PLAN HEADER “DOWN”... -
Page 58: Print A Breaker Test Plan
CT-7000 Operating Instructions 9.14 Print a Breaker Test Plan The user can print a breaker test plan stored in the CT-7000 EEPROM. Table 18.0 Print a Test Plan STEP OPERATION ACTION DISPLAY SELECT SET UP MENU. PRESS # 3 KEY. -
Page 59: Figure 21.0 Typical Test Plan Printout Of A Siemens Sps2 On Thermal Printer
CT-7000 Operating Instructions Velocity Calculation Formula Figure 21.0 Typical Test Plan Printout of a Siemens SPS2 on Thermal Printer... -
Page 60: Figure 22.0 Siemens Sps2 121 Close Timing Illustration
CT-7000 Operating Instructions Figure 22.0 Siemens SPS2 121 Close Timing Illustration... -
Page 61: Figure 23.0 Siemens Sps2 121 Open Timing Illustration
CT-7000 Operating Instructions Figure 23.0 Siemens SPS2 121 Open Timing Illustration... -
Page 62: Print A Breaker Test Plan Directory
CT-7000 Operating Instructions 9.15 Print a Breaker Test Plan Directory The CT-7000 breaker test plan directory stored in the CT-7000 EEPROM using the steps in table below: Table 19.0 Print a Breaker Test Plan Directory STEP OPERATION ACTION DISPLAY SELECT SET UP MENU. -
Page 63: English/Metric Or Rotary Transducer Selection
CT-7000 Operating Instructions 9.16 English/Metric or Rotary Transducer Selection The CT-7000 supports and displays both English and Metric calculations from the breaker's travel parameters such as the stroke, velocity and other parameters. The user can switch from one system to the other by following the steps in Table 20.0. Rotary transducer requires the user to enter the defined linear distance in millimeters or inches, per one degree of rotary motion as seen in Table 21. -
Page 64: Set Ct-7000 Internal Clock
CT-7000 Operating Instructions 9.17 Set CT-7000 Internal Clock The CT-7000 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 the EEPROM, the time and date are also stored along with the shot. -
Page 65: Slow-Close Test
CT-7000 Operating Instructions 9.18 Slow-Close Test The CT-7000 offers a unique feature called a "Slow-Close" test. The test permits users to measure the distance of a breaker's contact travel from the fully opened position to the contact or "touch" position, to the 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. -
Page 66: Transducer Self-Test
1. After selecting the transducer test mode, move the transducer slider and observe the display on the CT-7000 LCD. 2. If the slider is moved 1.00 inch, the CT-7000 LCD should display 1.00 inch. 3. Press the “STOP” key to return back to the main menu. -
Page 67: Check Cable Hookup
4. DIAGNOSTIC NOTES 1. The CT-7000 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. -
Page 68: Automatic Print Setting
CT-7000 Operating Instructions 9.21 Automatic Print Setting The CT-7000 can be set to print graphs and tabulated results automatically after each timing shot. To turn on the “Auto Print Results” mode, follow the steps in Table 26.0. Table 26.0 Automatic Print Setting... -
Page 69: Ct-7000 Channel Configuration
3 timing channels and one transducer channel on the graphic and tabulated report. The CT-7000 will always default to 3 contact channels (channel 1, 2 and 3) and one transducer channel (transducer channel #1) when the user first turns on the unit. The user can... -
Page 70: Running Ct-7000 In Tandem
For timing application requiring more than 12 timing contact channels, the user can use two or more CT-7000s to time a circuit breaker. A typical application is to use a CT-7000-12 and a CT- 7000-6 to time a 18-contact ATB. To time this circuit breaker, the user can use the following steps: n Connect the CT-7000-12 to phase A and B of the circuit breaker. -
Page 71: Ct-7000 Trouble Shooting Guide
Make sure the contact close state is longer than 10 ms. The CT-7000 has a 10ms de-bounce time, any contact state less than or equal to 10ms is invalid, thus the delay time is probably too slow. - Page 72 9. How does one review the current analysis setting? n Select Analysis (Press key #1). n Select PRINT SETTING (Press key #3). The CT-7000 will print out the current AP1 & AP2 settings. n Make sure the CT-7000 is under computer control 10.
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Page 73: Appendix A Ite Circuit Breaker Model 14.4K Timing Chart
CT-7000 Operating Instructions APPENDIX A ITE Circuit Breaker model 14.4K Timing Chart AP1= 1.5” Bounce Back AP2= 3.5”... -
Page 74: Appendix B Close-Open Timing Chart For Ite Circuit Breaker Model 14.4K
CT-7000 Operating Instructions APPENDIX B CLOSE-OPEN Timing Chart for ITE Circuit Breaker Model 14.4K Contact Touch Distance Peak To Peak Travel... -
Page 75: Appendix C Close-Open Tabulated Report For Ite Circuit Breaker Model 14.4K
CT-7000 Operating Instructions APPENDIX C CLOSE-OPEN Tabulated Report for ITE Circuit Breaker Model 14.4K... -
Page 76: Appendix D Open-Close Timing Chart For Ite Circuit Breaker Model 14.4K
CT-7000 Operating Instructions APPENDIX D OPEN-CLOSE Timing Chart for ITE Circuit Breaker Model 14.4K... -
Page 77: Appendix E Open-Close Tabulated Report For Ite Circuit Breaker Model 14.4K
CT-7000 Operating Instructions APPENDIX E OPEN-CLOSE Tabulated Report for ITE Circuit Breaker Model 14.4K... -
Page 78: Appendix F Siemens Tcp Breaker Velocity Calculation
CT-7000 Operating Instructions APPENDIX F SIEMENS TCP Breaker Velocity Calculation... -
Page 79: Appendix G Siemens Sps2 Breaker Velocity Calculation
CT-7000 Operating Instructions APPENDIX G SIEMENS SPS2 Breaker Velocity Calculation... -
Page 80: Appendix H Ct-7000 Siemens Sps2 Test Plan
CT-7000 Operating Instructions APPENDIX H CT-7000 SIEMENS SPS2 Test Plan... -
Page 81: Appendix I Ct-7000 Transducer Illustration
CT-7000 Operating Instructions APPENDIX I CT-7000 Transducer Illustration Linear Transducer on an OCB Rotary Transducer on Alstom HE 1014 Circuit Breaker... - Page 82 CT-7000 Operating Instructions Rotary Transducer on ABB HMB Mech String Transducer on ABB 72PM Circuit Breaker...
- Page 83 www.vanguard-instruments.com...
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