Megger frax 99 User Manual
  1. Manuals
  2. Brands
  3. Megger Manuals
  4. Measuring Instruments
  5. frax 99
  6. User manual

Megger frax 99 User Manual

Sweep frequency response analyzer
Hide thumbs
Table of Contents

Advertisement

Quick Links

FRAX User's Manual
Version 2.5
© 2011 Megger Sweden AB
Released in 2011-06-01

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the frax 99 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Megger frax 99

Summary of Contents for Megger frax 99

  • Page 1 FRAX User's Manual Version 2.5 © 2011 Megger Sweden AB Released in 2011-06-01...
  • Page 2 © 2011 Megger Sweden AB. All rights reserved. The contents of this manual for FRAX 2.5.2272 are the property of Megger Sweden AB. No part of this work may be reproduced or transmitted in any form or by any means, except as permitted in written license agreement with Megger Sweden AB.

  • Page 3: Table Of Contents

    Contents Table of Contents 1 FRAX 1.1 Safety First ........................... 1 1.2 FRAX Technical Specifications ........................... 2 1.3 Instrument Panels ........................... 3 1.4 Bluetooth Communication (only FRAX-101) ........................... 7 1.5 Built-in Battery Pack and Charger ........................... 9 1.6 Sweep Frequency Response ...........................
  • Page 4 FRAX User's Manual 3.7 Installation Progress ........................... 23 3.8 Installation Complete ........................... 24 4 FRAX Software 4.1 File Menu ........................... 26 4.2 Edit Menu ........................... 39 4.3 Configuration Menu ........................... 40 4.4 Windows Menu ........................... 56 4.5 Action Buttons ........................... 57 4.6 Legend ...........................

  • Page 5: Frax

    Congratulations to your choice of FRAX Sweep Frequency Response Analyzer by Megger. We at Megger have done our best and will continue do our best to satisfy our customers. Please visit our home page at www.paxdiagnostics.com and do not hesitate to contact us directly.

  • Page 6: Frax Technical Specifications

    FRAX User's Manual FRAX Technical Specifications General FRA Method: Sweep frequency (SFRA) Frequency Range: 1 Hz - 10 MHz, user selectable Extended Frequency Range: 0.1 Hz - 25 MHz, user selectable Number of Points: User selectable, maximum 32,000 Points Spacing: Logarithmic, linear or combination of both Dynamic Range/Internal Noise: Dynamic Range/Internal Noise: >130dB (FRAX-99...

  • Page 7: Instrument Panels

    FRAX Operating System Windows 2000, Windows XP or Windows Vista Processor Pentium 500 MHz or higher Memory/Hard Drive 256MByte / 30MByte free or more Interface Bluetooth (FRAX-101 only) and USB Specifications are subject to change without notice. Instrument Panels FRAX-101/FRAX-99 1.3.1 Front Panel 1.3.1.1...
  • Page 8 Left-hand side, top down: Informative text Serial number Right-hand side, top down: DC input DC-input, to connect the double insulated AC/DC adapter. DC symbol. Polarity Symbol. CE-mark Megger guarantee that this product complies with relevant CE directives and corresponding standards. Calibration date...
  • Page 9 FRAX FRAX-150 1.3.2 Left-hand side, top down: USB: USB-connectors Network: For connecting the FRAX-150 to LAN Serial port: For serial communication. Right-hand side, top down: Protective Earth/Ground Always connect the instrument to station earth/ground using connector the separate earth/ground cable. The separate earth/ground wire should be the first connection made and the last removed.
  • Page 10 FRAX User's Manual Power down. Shuts down the FRAX-150 computer. Home (not used) Help Information (not used) Page Up Page Down On the right you will find the navigation panel. In the middle of the navigation panel you will find the controls for the pointer and buttons for left (top) and right click (bottom).

  • Page 11: Bluetooth Communication (Only Frax-101)

    FRAX Arrow buttons and center Enter button There is a momentary pushbutton switch on the back of the unit that is required for firmware updates only. Bluetooth Communication (only FRAX-101) Bluetooth is a standard for wireless serial communication. Simply speaking, Bluetooth replaces a serial cable between your laptop and the FRAX instrument.
  • Page 12 FRAX User's Manual Add the device called "PAX Diagnostics". A pass code is needed. Enter the code "0000" (four zeroes) as the pass code. Select the PAX Diagnostics device.

  • Page 13: Built-In Battery Pack And Charger

    FRAX Make sure that it is registered as a serial connection. You can now connect to your FRAX unit from the FRAX software. Observe that the procedure described above only needs to be done once. Next time you start the computer simply insert the USB adapter using same USB port or use built-in Bluetooth. Important! If you install the external USB dongle in a different USB port on your computer, you may get a different serial COM port assigned to that USB port.

  • Page 14: Sweep Frequency Response

    FRAX User's Manual LED not lit: FRAX turned off, or FRAX is switched on, battery empty. Charging blinking: IFRAX connected to AC/DC adapter, Battery is fully charged (or charging LED lit: disabled of other reason see above) FRAX runs on batteries (AC/DC adapter not connected) LED lit: Sweep Frequency Response The FRAX "Generator"...

  • Page 15: Calibration

    Disposal FRAX and its accessories are all manufactured after August 12, 2005. Megger is responsible for the disposal of old FRAX units. The FRAX unit can be sent back to Megger for disposal at any time at no additional charge.

  • Page 16: Preparatory Procedures

    FRAX User's Manual Do not use any accessories that are not intended to use with the FRAX. Refer all servicing to qualified personnel. Preparatory Procedures Always follow local safety regulations! The transformer must be disconnected from the net, which means that any connection to the transformer bushings including neutral(s) must be disconnected.

  • Page 17: Create A New Test

    Quick Start Tutorial doesn't work, you will get an error message suggesting what to do, normally selecting the suggested port number with a green symbol next to it. Create a New Test A test starts by creating a sequence of sweeps and decide where to save data by use of "New Test".

  • Page 18: Test Lead Connection

    FRAX User's Manual If the "Measurement type" "Use Measurement as Template" is used the Nameplate contains the Template Nameplate as default, except the "Test Date" that is automatically added from your PC system. After enter Nameplate information and press "OK". A "Save As.." dialog where you can select the file structure and a name of your choice .
  • Page 19 Quick Start Tutorial Make sure to follow local safety regulations! Local safety regulations most certainly prescribe all bushing connections to be earthed/grounded when working on the transformer e.g. connecting the FRAX test leads. The ground braid shall go from the top clamp the shortest way to the bottom of the bushing.

  • Page 20: Test System Verification

    FRAX User's Manual Test System Verification Test leads should be checked for continuity and integrity before use. The best means for checking lead integrity and correct operation of the equipment is to perform the FRA self- check using a standard test object. This check is especially valuable for checking FRA test equipment, since there is generally no intuitive way of knowing if the test equipment is giving correct results when making field measurements.
  • Page 21 Quick Start Tutorial Here you can see the result of test measurements. Showing short circuit measurement (black) 1), open circuit measurement using FRAX-101 (green)2) and FTB-101 measurement (red). 1) A simple test to check the integrity of test leads is a short circuit test. Simply connect the "Source"/"Reference"...
  • Page 22 FRAX User's Manual FTB-101 2.6.1 FTB-101 is a field test box that is intended to be used to verify the leads and the equipment as recommended by CIGRE and several others. Use the FTB-101 and make a test sweep. If the hook-up and the equipment is is good working order the sweep should look as the picture.

  • Page 23: Start Measurement

    Quick Start Tutorial Use the FTB-101 and make a test sweep . If the hook-up and the equipment is in good working order the sweep should look as the picture. You can compare the results with the file F TB-101.frax that is shipped with the FRAX software. REFERENCE FTB 101 Field Test Box for FRAX...

  • Page 24: View Data

    FRAX User's Manual View Data You can view data in the FRAX Software, for more details try it out and see FRAX Software Export Data If you want to use the data in other software you can use the data files directly or export the data of your choice, see Export...

  • Page 25: Pc Requirements

    Bluetooth (FRAX-101 only) and USB Interface Welcome Screen Welcome to Megger Installer for FRAX. To install FRAX Software press Next witch will bring you to License Agreement License Agreement Read the license and check the "I accept the terms in the License Agreement" checkbox. This will enable the Next button.

  • Page 26: Installation Location

    FRAX User's Manual Installation Location Select the location to which the FRAX Software will be installed. Make sure you have enough space available on your hard drive. To continue the installation press Next. This will take you to the Shortcuts Screen.

  • Page 27: Shortcuts Screen

    Installing FRAX Software Shortcuts Screen This is where you select the shortcuts to be installed. You are now ready to install the software. To install the application press Install. This will bring you to Installation Progress. Installation Progress The application executables and registry items are being installed. When the files has been installed you will automatically be transferred to Installation Complete.

  • Page 28: Installation Complete

    FRAX User's Manual Installation Complete Congratulations! The installation is now complete. You can now start the FRAX Software. FRAX Software The FRAX Main Window is shown below. In this section it is assumed that the FRAX software is installed and has started up properly. For issues regarding installation of FRAX Software, see section Installing FRAX Software.
  • Page 29 FRAX Software During the first six months the program will report all abnormal program terminations to our software department for debugging purposes.

  • Page 30: File Menu

    FRAX User's Manual File Menu Menu Command Description New Test... (Ctrl+N) Creates a new measurement file to save data in Load Test... (Ctrl+L) Loads a previous performed measurement file Select Test... (Ctrl+F) Open the test database to be able to select one or more tests to open Close Test (Ctrl+I)
  • Page 31 FRAX Software Exit (Alt+F4) Terminates the FRAX Software New Test ... (Ctrl+N) 4.1.1 The software requires a file and a folder location to save its data. The command "New Test" opens the "Save As" dialog. Measurement Type 4.1.1.1 The first window appear in New Test is the Measurement type window In "Measurement type"...
  • Page 32 FRAX User's Manual In the "Use Measurement as Template" tab, you can select an earlier measurement as template for the new measurement. Hit the "Load File" button and load the Measurement file of your choice or use "Select Test" to find an earlier measurement in the database. The "Sweep names"...
  • Page 33 FRAX Software Nameplate 4.1.1.2 If you select "Quick Test" or "Multiple Sweeps" in the "Measurement type" dialog, an almost empty nameplate will appear. The "Test date:" is by default filled in with your PC system date. Please fill in the Nameplate (no field is required). Press "OK". Note that you can always add or change information to the "Nameplate"...
  • Page 34 FRAX User's Manual Save As 4.1.1.3 The "Save As" dialog suggests a file name based on your selected format that you have chosen in configuration menu, submenu Default Filename Settings. The default directory will be M y Docum ents on first start and then the directory you used last time. You can change the file name to a name of your choice and save the file in a directory of your choice.
  • Page 35 FRAX Software Note: When you save the file to the M y Docum ents folder it will only be accessible for you. If several persons share the same computer and need to be able to view each other's measurements it is a good idea to instead save files to a common folder such as the C: \Docum ents and S ettings\All Users\Docum ents directory.
  • Page 36 FRAX User's Manual button for a list. To see the full nameplate of a test click the Nameplate button. To group the tests according to any heading by dragging it into the gray area at the top. The FRAX indexer works in the background and checks all monitored directories for new or changed files.
  • Page 37 FRAX Software The Report dialog allows you to select a report template and generate (press "Generate") a report using the current data and the template. A Word document is generated that can be edited, printed or converted to another document format using third party software such as pdf995 or PDFCreator.
  • Page 38 FRAX User's Manual The graph number in the report designer corresponds with the type number of the graph. The easiest way to get the type number is to look at the top left corner of the graph view. To get the curves on the report you will also need to have them in the FRAX software. Make sure both models and views are loaded.
  • Page 39 FRAX Software CIGRE Brochure 342 (XFRA) XFRA or Export FRA is a storage file format recommended in CIGRE Brochure 342. When exporting to XFRA you are given the opportunity to inspect and make alterations to what will be written to the file. Pay attention to the terminal settings, especially if you are using custom sweep names that don't use the default sweep names.
  • Page 40 FRAX User's Manual CSV Export Exports the entire file, selected sweeps or all visible sweeps to a *.csv file. If you use selected view as data source make sure that only graphs you want to export are visible in the Graph, as...
  • Page 41 + legend to copy a screen dump to the clipboard and then paste them into the program of your choice. Note that the FRAX150 only supports the Pentax PocketJet 3 Thermal Single Sheet printer aka Brother PocketJet 3 USB printer. Megger part number 36493.
  • Page 42 FRAX User's Manual Add Sweep... (Ctrl+A) 4.1.9 "Add sweep" adds an additional sweep into a selected Measurement file structure. You must fill in a "Sweep name" to be able add a new Sweep (press "OK"). The default "Measurements settings" are used. 4.1.10 Delete Sweep (Ctrl+D) Deletes a sweep (with or without data) from a Measurement file structure.

  • Page 43: Edit Menu

    FRAX Software 4.1.13 Connect (F7) Connects the FRAX software to the FRAX-101 instrument. For more information about connection please see Connection Settings and Bluetooth communication. 4.1.14 Disconnect (F8) Disconnect the FRAX software from the FRAX instrument. 4.1.15 Start measurement (F9) Start measurement of selected sweep in Legend.

  • Page 44: Configuration Menu

    FRAX User's Manual Copy Legend 4.2.2 Copy the Legend into the clipboard. Copy View + Legend (Alt+C) 4.2.3 Copy the current View and the Legend into the clipboard. For more information check Copy View and Copy Legend. Change Sweep Color (Alt+O) 4.2.4 This dialog allows you to change the color and line width of the selected sweep curve and change the thickness of the line.
  • Page 45 FRAX Software Change Change the language in FRAX Software menus and more Language... Connection Set the COM-port for communicating with the FRAX instrument Settings... Measurement (Ctrl+M) Set default measurement settings such as start frequency, Settings... integration time and more. Graph (Ctrl+G) Set axes and more in the FRAX software graph Settings...
  • Page 46 FRAX User's Manual Measurement Settings... (Ctrl+M) 4.3.3 The default measurement settings are specified in this dialog. All new measurement sweeps except sweeps based on "Use Measurement as Template" will have these settings initially. A measurement sweep can consist of one or more (max 15) measurement bands with different settings.
  • Page 47 FRAX Software To perform the measurement sweep faster, the low frequency range can be modified by dense out measurement points and/or lower the integration time ("Min Cycles"). Below are examples of various sweeps. On the FRAX-101 and 150 it is possible to set the sweep to be performed in reverse, i.e. to measure from the highest frequency to the lowest.
  • Page 48 FRAX User's Manual FRAX fast 20 - 200 200 - 2 k 2 - 20 k 20 - 200 k 200 k - 2 M Total: 440 Fixed P/D settings Example 20 - 2 M Omicron default 20 - 2 M Doble default 20 - 2 M 1000...
  • Page 49 FRAX Software Graph Views... 4.3.5 In the Graph Views dialog, you can configure which graphs you want access to as a separate tab. The default selections include Magnitude, Phase, and Magnitude / Phase, as shown below. To select a graph, check or uncheck the box to the left of its name.
  • Page 50 FRAX User's Manual To edit or delete a custom graph, select the graph in the list and then click the Delete or Edit... buttons. To add a custom graph, click the Add... button, and the following dialog is shown.
  • Page 51 FRAX Software To add a graph type, type a name and a description in the box, and click the Add button. Enter a description and a number in the Graph Type box. The number is used as a unique id for this particular graph.
  • Page 52 FRAX User's Manual Models... 4.3.6 In the Models dialog, you can select what models to use when a graph is plotted. When using an active probe, the model for the probe should be used. No other models should be used together with a probe model.
  • Page 53 FRAX Software Phase Phase Phase Phase SFRA (Linear) Magnitude / 1 Ch Phase Phase Phase Phase Impedance (Ch0 Ch1)/I (Ch0 Ch1)/Ch1 P hase P hase(Z) Admittance Ch1/(50 (Ch0 Ch1)) P hase Phase P hase(Z) Two additional models are available and that is R and L model that plots its results in Impedance view.
  • Page 54 FRAX User's Manual The screenshot above, the custom model designed by Megger for the Active Voltage probe AVP-101, illustrates some of the features of Custom Models. Type 0 represents the SFRA(dB) Magnitude graph and since the AVP-101 has a ratio of 10, the equation becomes 20*log10 ((ch1*ratio)/ch0).
  • Page 55 4.3.7 Analyzing data will only very briefly be described in this Users’s manual. Please refer to Megger’s application documentation and relevant guides and standards e.g. IEC 60076-18 (a draft at time of printing this User’s Manual) IEEE PC57.149 (a draft at time of printing this User’s Manual)
  • Page 56 FRAX User's Manual Important note: Calculations of LRxy and LRxy is based on discrete mathematics described under the DL/T 911-2004 Analyzer section. Therefore, same traces measured with logarithmic or linearly spaced measurement points will give slightly different result. Mathematics describing a continuous trace is best approximated using linear spaced measurement points. Furthermore, the DL/T 911-2004 standard also assumes linearly spaced measurement points.
  • Page 57 FRAX Software X(k) X(k) Calculate the normalization covariance factor of these two sequences Calculate the relative factor Rxy meeting the project requirements as per the following formula: others Judge the degree of deformation of transformer winding as per Table A.1 Table A.1 Relation between relative factors and degree of transformer winding deformation (only for reference) Relative Factors R...
  • Page 58 FRAX User's Manual To change the settings for the analysis click the "Settings" button in the analyzer selection dialog. This brings up a dialog where the settings can be adjusted. In bottom right corner you select if the evaluation variable is the correlation coefficient (LRxy) or the Rxy-factor. You can add or remove frequency ranges;...
  • Page 59 FRAX Software 4.3.8 Default Filename Settings Specify the default filename settings that will be used in the New File Save As dialog. Data time format (YYYY-MM-DD hh.mm.ss) Generate a file name of format "YYYY-MM-DD hh.mm.ss.txt" based on the system time in...

  • Page 60: Windows Menu

    FRAX User's Manual your PC. According to nameplate Generate a file name based on data entered into the nameplate in the format substation_ designation_ date tim e.frax . Number format (Dxxxxxxx) Generate a file name starting with the number entered into the edit field. Once a new file has been created the number will be incremented.

  • Page 61: Action Buttons

    FRAX Software Action Buttons Action buttons for faster access to common functions. Graph Settings 4.5.1 Same as the menu item Graph settings... (Ctrl+G).
  • Page 62 FRAX User's Manual Graph View Settings 4.5.2 These five buttons controls the graph settings specified in Graph Settings dialog. 4.5.3 New Test Same as the menu item New Test ... (Ctrl+N). Select Test 4.5.4 The same as the menu item Select Test... (Ctrl+F) Edit Nameplate 4.5.5 Same as the menu item Edit Nameplate...

  • Page 63: Legend

    FRAX Software Start 4.5.7 The start button is a multi-functional button. You can get action suggestions by pressing the start button. Button Icon Description This icon means that you are not connected to the system. 1. No file is selected in the Legend. 2.
  • Page 64 FRAX User's Manual This is a typical legend view. 4.6.1 Usage Usage overview You can navigate the legend by either using the arrow buttons at the bottom of the legend. You can also use Alt+arrow keys Up and Alt+arrow key Down to navigate between sweeps or Alt+Page Up or Alt+Page Down to change File.
  • Page 65 FRAX Software The file header contains 3 function buttons and the name of the file. File function Description button Hide / Show inactive sweeps in the file. Enable / Disable sweeps in the file. Close the file. Sweep Description The sweep contains 2 function buttons and the name of the sweep. Below is a list of different sweeps with different attributes.

  • Page 66: Views

    FRAX User's Manual Views There are several views available. The Nameplate view is always present and the "Magnitude (Alt-M), Phase (Alt+P) and Magnitude / Phase (Alt+B) are also present when you first start your software. You can easily change the view by clicking the view-tab above the view. Also you can change views and create your own views, see further Graph views...
  • Page 67 FRAX Software...

  • Page 68: Appendices

    FRAX User's Manual Appendices Appendix A: Calibration Instruction The calibration of a FRAX can be performed through an automated process by use of the FraxCal software. The FraxCal utilizes an Agilent 34401A or or an Fluke 8845A/8846A DMM (digital multi meter) and a FRAX calibration adapter connected to the FRAX generator output and measuring input channels.
  • Page 69 Appendices Performing the calibration Start the FraxCal software by double clicking the FraxCal icon on your desktop. The start page of the software is presented in the figure below. The software will automatically detect the serial number of the FRAX unit and the last calibration date.
  • Page 70 FRAX User's Manual During the calibration process, the software will keep you informed about the progress. The process takes approximately 12 minutes. After successfully completed calibration, the following message will appear. All calibration data is stored in the FRAX instrument. No written report can be obtained from the software, thus suggesting a separate calibration report to be created manually.
  • Page 71 Appendices Measure from 10 Hz to 10 MHz and the measured data should be 0 dB with a maximum deviation of +/- 0.1 dB. Also make a verification using the built-in calibration reference. Connect as explained in the figure below. Run standard sweep from 20 Hz –...
  • Page 72 FRAX User's Manual To add model click: Menu Configuration Menu Models Select CAL-510k...
  • Page 73 Appendices On each CAL 101, there is a resistance value on the s/n label. To ensure the best possible verification; enter this resistance value here. In this example, we have used 510 kΩ.

  • Page 74: Appendix B: Optional Active Probes

    Active Probes have been discontinued and is not included in this User’s Manual. However, the FRAX SW version 2.5 still supports use of probes after installation of Models as in earlier FRAX SW versions. Please refer to earlier User’s Manuals or Megger’s Support.

  • Page 75: Appendix C: Adjusting Output Voltage

    10 Volts up to 12 and down to 0.1 Volt, by changing a file in the FRAX directory. The file name is named "connectioncommands.txt" and it is in the directory you installed the FRAX software to, usually C:\Program Files\Megger\FRAX To use the file to adjust the output voltage add the command to the file.

  • Page 76: Appendix D: Sweep Name Settings

    FRAX User's Manual Appendix D: Sweep Name Settings There are two predefined sweep plans for each language, one IEEE based on the DRAFT D9 of the IEEE PC57.149 and one IEC based on CIGRE Brochure 342, 2008 and a draft of IEC 60076-18. All predefined sweep plans can be modified to suit your use.
  • Page 77 Appendices stabilizing windings that are earthed at one corner in service, the earth shall be removed if possible without removing liquid or gas. Always make notes about actual set-up used in the notes section of nameplate Zig-zag connected windings shall be measured as star windings with a neutral connection (if accessible).
  • Page 78 FRAX User's Manual 1) In the “En-to-End Open” (Open Circuit Self Admittance, OC) the signal is applied to one end of each winding in turn, and the transmitted signal is measured at the other end. The low- frequency range of this test is basically a low voltage measurement of the voltage dependent single phase excitation current.
  • Page 79 Appendices 3) In the Capacitive Inter-Winding, CIW (Inter-Winding, IW) measurement, the signal is applied to one end of a winding and the response is measured at one end of another winding on the same phase (not connected to the first one). The lowest-frequency range of this test is basically a capacitance and dissipation/power factor measurement (e.g.

  • Page 80: Appendix E: Frax Cables And Clamps

    FRAX User's Manual Appendix E: FRAX cables and clamps The FRAX clamps and cables are field tested, rugged accessories ensuring repeatable and accurate measurements. Coaxial cables are covered with an extra protective cover and strain relief is fitted on all 9 and 18 meter cables to ensure a long and trouble free life of service. Ground braids made of tin plated copper ensure good contact, make them easy to work with and increase life of service compared to e.g.
  • Page 81 Appendices Bushing connection 5.5.1 The C-clamp can be fastened on any type of bushing up to Ø 90 mm. The M12 screw ensures good electrical and mechanical contact. No risk of a clamp falling down due to heavy cables and braids. The clamp is delivered with a M12 hat nut, which can be used when you want to avoid the screw making marks on a sensitive surface.
  • Page 82 FRAX User's Manual Generator cable connection (yellow/red) 5.5.1.1 Cable strain relief Coaxial cable from FRAX - Generator (Yellow) - Reference (Red) Ground braid connected to ground. Keep the braid straight along the bushing and ground the braid at the base of the bushing. Ensure good connection.
  • Page 83 Appendices Measure Cable connection (black) 5.5.1.2 Cable strain relief Coaxial cable from FRAX (Measure) Ground braid connected to ground. Keep the braid straight along the bushing and ground the braid at the base of the bushing. Ensure good connection to ground using the G-clamp.
  • Page 84 FRAX User's Manual Ground braid practice 5.5.2 The ground braid shall go from the C-clamp the shortest way to the bottom of the bushing. Good ground connection is essential for reliable test results. Look at the next two pages for more information.
  • Page 85 Appendices G-clamp connection to ground 5.5.2.1 The new, unique ground clamp handles both nuts and bolts as well as other round and flat connectors, making it the most easy-to-use and versatile ground connection available. The G-clamp is easy to attach, easy to tighten the braid, which ensuring a quick and reliable procedure for shortest braid practice, which is essential to get repeatable measurements.
  • Page 86 FRAX User's Manual Ground braid connection 5.5.2.2 The clamp can be attached to ground in many ways. See previous section. To attach and tighten the braid: open up the braid plate by loosening the wing nuts.
  • Page 87 Appendices Place the braid between the G-clamp and the braid plate. Tighten the braid to create a straight line from the C-clamp to the G-clamp. Tighten the wing nuts. For extra flexibility when connecting the braids to ground, the short braid with clamp included in the ground braid set can be used.
  • Page 88 FRAX User's Manual Field Test Box FTB 101 5.5.3 Connect C-clamp Connect C-clamp to FTB101 to FTB101 Connect the Connect the Measure cable Generator cable Attach the G-clamp Connect the to ground on the braid to the FTB101 G-clamp Connect the braid to the G-clamp Connect the ground...

This manual is also suitable for:

Frax 101Frax 150

Table of Contents