User manual
Contents
1. BAUR Pr f und Messtechnik GmbH Raiffeisenstra e 8 A 6832 Sulz Austria headoffice baur at www baur eu 822 164 1 phd 12 01 2015 ENSURING THE FLOW User manual Handheld Time Domain Reflectometer TDR 500 uuu uwuj BAUR Pr f und Messtechnik Raiffeisenstr 8 A 6832 Sulz Austria T 43 5522 4941 0 F 43 5522 4941 3 www baur eu headoffice baur at 11 User manual TDR 500 Declaration of conformity DECLARATION OF CONFORMITY We ZRUN BAUR Pr f und Messtechnik GmbH Raiffeisenstra e 8 A 6832 Sulz Austria headoffice baur at www baur eu declare under our sole responsibility that the BAUR product BAUR Time Domain Reflectometer TDR 500 to which this declaration refers conforms to the following standards or standard documents Low voltage guideline 2014 35 EU EN 61010 1 2010 EN 60950 1 2006 A11 2009 A1 2010 A12 2011 AC 2011 A2 2013 EMC Guideline 2014 30 EU EN 55022 2010 EN 61000 4 2 2009 EN 61000 4 3 2006 A1 2008 A2 2010 EN 61000 4 4 2012 EN 61000 4 5 2006 Signed Torsten Berth Technical Director Dr Eberhard Paulus Director QM QS Sulz 30 01 2015 31 32 User manual TDR 500 Delivery scope and options General Battery Automatic switch off Display Ambient temperature Storage temperature Dimensions WxHxD Weight Degree of protection Safety and EMC 4 x 1 5 V alkaline batteries IEC LR6 1 2 3 min or deactivated LCD display 122. Ne ee j aa ki ii N Risk of electric shock tee __ We z nme Is 2 Cat5 STP 100 T Pair a PE 100 mr Tale lone ie ian Coaxair 98_ sors ripairptre 171 100 Coax Solid PE 67 50 75 T Pair Paper 83nF 72 100 8 32 25 32 User manual TDR 500 Using the TDR 500 9 9 5 6 24 32 1 4 Tone generator The TDR 500 may also be used as a tone generator to trace and identify cables and wires The user will need a conventional inductive tone probe within the range 810 Hz to 1 110 Hz Selecting tone generator Level 2 A ed al A ei e Press or P to select 2 To open the menu press SELECT To exit press When tone has been selected connect test lead to cable pair to be traced 5 Trace the cable using tone probe which will emit a tone The volume will 1 increase the nearer the probe is to the cable I u e E Note The auto shutdown function is disabled in tone generator mode so that the tone can be injected into a cable for extended periods while tracing takes place 1 6 Set contrast e 1 7 Press lt or P to select e To open the e menu press SELECT Press or P to increase or decrease contrast oe oS To exit press User manual TDR 500 General Symbols used Symbol Meaning You are prompted for an action 1 Perform the actions in this sequence rA PEN a If an operation consists of several operating steps specify thes
3. The TDR 500 has 11 range scales covering the range of 7 to 6 000 meters gt To select a range scale or scan the cable route press and hold down the RANGE button and press d to decrease range press P to increase range Single shot and continuous scanning modes Single shot mode Saves on battery life and also enables the TDR 500 to be disconnected from the cable while still leaving the fault display on the screen When the TDR 500 is first switched on it is set to Single shot mode In this mode the TDR 500 only fires a pulse into the cable under test when either the and P buttons or W button is pressed Continuous scanning mode Fires pulses into the cable under test In this mode the TDR 500 is able to more easily identify intermittent cable faults gt To enter Continuous scanning mode press down and hold the gt button The icon will appear at the bottom right of the display when continuous scanning mode is activated Gain adjustment 1 To increase the gain of the return pulse align the cursor at the beginning of the event 2 Press and hold tl button and press lt 4 or P keys to increase or decrease gain 23 32 User manual TDR 500 Using the TDR 500 wi A 5 1 22 32 wowog wu 005 YAL om G Coaxial Cable u Shielded Cable Multi conductor Cable Testing a cable Having followed the set up procedures in the preceding chapters a typical displa
4. l l 1 Connections for measuring cables 3 To change settings press W to move to shut down 4 Press or P to select setting 2 LCD display 5 To exit press Selected values will be automatically stored 3 Menu Cursor right button increase range Note The shutdown feature isn t active if the settings menu is open 4 Seen 4 4 Set unit of measure 5 Back Measuring range button 6 Power on off button 7 Backlight on off button 8 Start test button 1 Select Alusing the P keys 9 TDR Cursor left button decrease range 2 Press SELECT key to open 18 32 15 32 User manual TDR 500 First operation 3 2 4 16 32 Accuracy The TDR 500 is able to measure distances to faults and cable lengths to an accuracy of 1 This measurement accuracy is based on the correct velocity of propagation Vp value being used for the cable under test and homogeneity of the Vp along the cable length If the Vp is set incorrectly by the operator or the Vp varies along the length of the cable then additional errors will be incurred and the measurement accuracy will be affected Note The Vp is less well defined with unshielded multicore cable including power cable and is lower when a cable is tightly wound on a drum than when installed FIRST OPERATION gt Observe the following information The safety instructions in the chapter For your safety on page 10 Local safety and accident prevention regulations Safety instructions and
5. for the fault location with TDR 500 gt If this user manual is lost please contact BAUR Pr f und Messtechnik GmbH or your nearest BAUR representative http www baur eu baur worldwide Application of instructions This user manual applies for devices with the firmware version from 2 02 Structure of safety instructions The safety instructions in this user manual are presented as follows Danger A SIGNAL WORD symbol A Type of danger and its source Possible consequences of violation gt Measure to prevent the danger 7132 User manual TDR 500 General User manual TDR 500 Using the TDR 500 If a dangerous situation could arise at a specific step the safety instruction is displayed immediately before this dangerous step and is shown as follows 3 7 Typical fault displays The following diagrams show typical fault traces to assist you in the identification of faults using the TDR 500 A SIGNAL WORD 6 Type of danger and its source A 1 Possible consequences of violation 2 7 Measure to prevent the danger V ko Danger levels 4 9 Signal words in the safety instructions specify the danger levels May lead to severe injuries or death Nr Fault May lead to light to moderate injuries 1 Open conductor 6 Wet splice water NOTICE May lead to material damage 2 Shorted conductor T Frayed cable 3 Splice 8 Water ingress Danger symbols 4 Bridge tap 9 Tap 5 Split resplit 10 Splitter
6. gt Never take apart the device The device does not contain any l l components that could be serviced or repaired by the user 1 Upon completion of the set up procedures in chapter 4 press button Y and the following test screen will be displayed Dangerous electric voltage Danger to life or risk of injury due to electric shock 2 3 1 Dangers when working with high voltage 1 2 Although this device does not produce dangerous voltages the electric 8 Ein Coax 7502 mi 3 circuits to which it is connected could present danger of electric shock or formation of electric arcs 7 a A The personnel need to pay special attention and must be very careful while can dp per 8L 4 working with high electric voltage Commissioning and operation of TDR 500 are permitted only in compliance 6 5 with the EN 50110 EU EFTA countries or with standards applicable in your country 1 Vp setting 2 Impedance setting Z Ob 5 safet l 3 Range scale 7 m SEND Ale TUES 4 Scan mode icon indicating scan mode selected Comply with the following safety rules before beginning tasks in and on 9 Selected gain value electrical plant en Disconnect the test object 8 Cursor Secure against re energisation Ascertain the voltage status of the disconnected object 2 Attach the test lead set to the TDR 500 via the connectors located at the top of the unit 3 Ensure that no power supply or equipment is attached to the cable to be tested 4 Ensure that the
7. regulations according to the state of the art National and international standards and guidelines in the latest applicable version EN 50110 for operation of electric systems EU EFTA countries or applicable standards in your country 4 1 4 2 User manual TDR 500 First operation Preparing the TDR 500 for use gt Press button to power the tester the following screen will be displayed 1 TDR 500 3 SEE BEE 2 No Element 1 Model Battery condition indicator all black battery fully charged as charge 2 decreases symbol changes to white 3 Software version programmed into device Prior to use the following parameters will need to be set Set auto shutdown chapter 4 3 page 18 Set contrast chapter 5 6 page 24 Set unit of measure chapter 4 4 page 18 Set velocity of propagation chapter 4 6 page 19 Menu and screen displays Level 1 Start up screen TDR 500 VA RM 17132
8. that caused the error 6 32 27132 User manual TDR 500 Maintenance 6 6 1 6 2 26 32 MAINTENANCE NOTICE Damage to devices due to improper handling The user is liable for damages caused due to repairs gt Never take apart the device This can lead to damages to the device Inside the device there are no components that could be serviced or repaired by the user Maintenance work must be carried out only by qualified and authorised personnel from BAUR Battery replacement 1 Disconnect the instrument from any cable or network link 2 Turn the instrument off 3 Loosen the two black screws and remove the battery compartment cover 4 Replace the batteries with 4 x 1 5 V alkaline batteries observing the polarities 5 Refit the battery compartment cover and refit the two screws Cleaning NOTICE Damage to devices due to improper handling Do not use alcohol solvents or hydrocarbons Ensure material compatibility Do not splash water directly on the instrument Disconnect the instrument from any source of electricity Turn the instrument off 1 1 1 2 1 3 User manual TDR 500 General GENERAL Using this manual gt Read the entire user manual before operating the product for the first time gt Consider this user manual as part of the product and keep it in an easily accessible location This user manual contains all necessary information that is needed
9. us The unit of measure the speed is displayed in feet or meters will be determined by the setting selected in chapter 4 4 The conversion is based on the value Vp UC accuracy 1 digit TDR V 2 m us 100en us Coax b Metres Contrast Shutdown minutes Select lAlusing the P keys Press SELECT key to open Press V to move to displayed unit Press 4 to scroll between V 2 m us or Vp UC Press W to move to displayed value Press or P to increase or decrease displayed value an men I a To exit press P Selected values will be automatically stored 19 32 User manual TDR 500 First operation User manual TDR 500 Product information Level 2 Menu 1 To access level 2 Menu press gt and release 3 1 Full illustration 1 TDR 500 I VXXX ma q4 E p ye 100mus TIP 1000 TDR 500 2 5 25 0m dB DEF 9 7 E lt SELECT gt 3 2 Tochange the following settings from menu select using the lt P 4 keys SCAMLOCK RANGE PER di es 3 Press SELECT key to open 8 v 5 1 OO a 4 3 Set auto shutdown IDR V 2 m us 100m us TDR 500 7 TP 1000 Time Domain Reflectometer Metres Contrast EN Shutdown 2minutes N p TE AUR To preserve battery life the TDR 500 is fitted with an auto shutdown feature Shutdown time is selectable between disabled 1 minute 2 minutes and 3 minutes 1 Select X using the P keys Nr Element 2 Press SELECT key to open
10. 1 3 280 15 49 2 6 560 30 98 3 9 850 60 197 6 19 000 120 394 250 829 500 1 640 Measurement range selection Manual Propagation speed Resolution Adjustable between 1 99 as velocity factor ratio of the transmitted pulse speed to the speed of light in m us or ft us displayed as v 2 The conversion is based on the value Vp UC accuracy 1 digit Approx 1 of measurement range 1 of selected measurement range at homogeneous Accuracy propagation speed 29 32 User manual TDR 500 Transportation and storage 8 8 1 8 2 28 32 TRANSPORTATION AND STORAGE Transportation If you are sending the TDR 500 to BAUR Pruf und Messtechnik GmbH a BAUR representative or to the technical service for repairs observe the following gt During transport comply with the ambient conditions specified in the technical data of the product Information on the technical data is given in the corresponding chapter of this user manual gt Protect the device against strong vibrations gt Protect the device against humidity Storage gt During storage comply with the ambient conditions specified in the technical data of the product Information on the technical data is given in the corresponding chapter of this user manual gt Protect the device and its components from humidity gt If the instrument is not to be used for a period of more than 60 days it is recom
11. 8 x 64 pixel with background lighting 10 to 50 C 20 to 70 C Approx 165 x 90 x 37 mm Approx 350 g 12 oz IP 54 CE compliant in accordance with Low Voltage Directive 2014 35 EU and EMC Directive 2014 30 EU 10 DELIVERY SCOPE AND OPTIONS Standard delivery BAUR handheld time domain reflectometer TDR 500 Connection cable with 2 crocodile clips Carrying bag incl carrying strap User manual 30 32 2014 All rights reserved Reproduction circulation in any form whatsoever publishing on online services or Internet as well as duplication on data carriers even in extracts or with changed format is allowed only with prior written permission of BAUR Pruf und Messtechnik GmbH A 6832 Sulz Austria We reserve the right in the interests of our customers to make amendments as a result of further technical development Illustrations descriptions and scope of supply are therefore not binding The names of products and companies are the trademarks or brand names of the relevant companies 9 User manual TDR 500 Technical data TECHNICAL DATA Cable fault location Output pulse Output pulse width Output impedance 3ns 3ms 25 50 75 or 100 Q adjustable Overvoltage protection Sampling rate AC 250 V 2 measurements s or single measurement not in 3 km 6 km range Audio frequency generator 810 1100 Hz Measurement range Metre Feet Kilometre Feet 7 23
12. based on the risk assessment and must be followed at the workplace The TDR 500 is designed for use on de energised circuits only The circuit under test must be switched off de energised securely isolated and proved safe before test connections are made Connection to lines under voltage will damage the instrument and could be hazardous to the operator Always keep your hands behind guards on the probes and crocodile clips Connect the device as described in this user manual Before lifting the safety measures all live parts must compulsorily be discharged earthed and short circuited 13 32 User manual TDR 500 Product information 3 14 32 PRODUCT INFORMATION The TDR 500 6 km 19 000 ft range handheld time domain reflectometer weighing only 350 grams 12 oz fits neatly into the hand With its 128x64 pixel backlight display provides accurate and easy to read fault locations on metallic cables With a 3 nanosecond pulse rise time near end cable faults can be clearly identified without the need to suppress the transmitted pulse Housed in a rugged IP 54 rated ABS enclosure the TDR 500 is suitable for outside use Using pulse widths and gain settings which are pre determined for the length range selected and with only 7 operating buttons all major operating and setting parameters can be easily accessed In addition to the pre determined gain settings there is a user variable gain control to further en
13. e 6 1 Battery replacement 0024002240 nenn nnnenenn nenn ennnenene nennen 26 er gt Never take apart the device This can lead to damages to the device 62 CEaiNgeeneee en 26 Inside the device there are no components that could be serviced or T Troubleshooting rennen 27 a Mie sch l Repair work must be carried out only by qualified and authorised 8 Transportation and storage u uu0444snennennnnnnennenenne nenne nnenn nennen 28 personnel from BAUR 8 1 IIaNSPOrAUDR sessies a n ei 28 The instrument contains static sensitive devices and is not user serviceable 8 2 Storage Se 28 If an instrument fails or its protection has been impaired it should not be 2 Technica dala Pree eee en ae 29 used but sent back for repair by suitably trained and qualified personnel 10 Delivery scope and Options cceccesseseceseesecesseseseeeseeseenreeseenreeee 30 When a fault occurs proceed as follows 11 Declaration of conformity cccceecceseeeeeeceeeeeeeeeeeesaeeeeeeeaeeeeseeeeeeas 31 he TSB CK ING EHAIgE BIS S SEINE EEDA 2 Restart the device 3 Ifthe error occurs again after the device has been restarted contact your nearest BAUR representative http www baur eu baur worldwide It may be possible for the BAUR Pruf und Messtechnik After Sales Service Team to determine the cause of the fault remotely To do so please specify the following data Device serial number 7 Firmware version Procedure
14. e b with a b c Perform the operating steps in this sequence 1 Numbering in the legend 2 7 List Indicates extensive information on the topic in the corresponding user manuals Information on the screenshots and graphics used The screenshots and graphics used are intended to illustrate the procedure and may therefore differ slightly from the actual state Warranty For warranty claims please contact BAUR Pruf und Messtechnik GmbH or your local BAUR representative http www baur eu baur worldwide Warranty is cancelled in case of misuse After Sales Service For questions contact BAUR Pruf und Messtechnik GmbH or your BAUR representative http www baur eu baur worldwide BAUR Pruf und Messtechnik GmbH Raiffeisenstra e 8 6832 Sulz Austria service baur at www baur eu 9 32 User manual TDR 500 For your safet 2 2 1 FOR YOUR SAFETY All BAUR devices and systems are reliable and are manufactured as per state of the art technology The individual parts and the finished devices are subject to continuous testing by our qualified personnel as part of our quality assurance system Each device is fully tested before delivery However the operational safety and reliability in practice can be achieved only when all necessary measures have been taken The responsible body and operator of the device or system are responsible for planning these measures and monitoring their implementatio
15. essennennnnnennnnnnnnnnnnnnnennnnnennennennennen 18 4 5 Set cable impedance Z cccccccccsseececeeeeeeeeeeeeeseeeeeeaeeeeesaees 19 4 6 Set velocity of propagation Vp cccseccccsseeessseeeeeeeeeeesaeeees 19 4 7 Set contrast cicacesessedvcnridunsvatncadcaiendsediaesisutencicddsbadeledveiaueiseads 20 48 Backli ht een 20 User manual TDR 500 Table of contents User manual TDR 500 Troubleshooting 3 Use a soft cloth lightly dampened with soapy water wipe over the 4 9 How to determine Vp SettingS cccccsecccsseceeeeeeeeeeeeeeeeaeees 20 instrument rinse the cloth in clean water squeezing out any excess 5 Using the TDR B00 za ee ei 21 water wipe Over the instrument removing any soap residue dry instrument with a dry cloth 9 1 1ESING a CADIS een eek 22 5 2 Selecting range scales u022202002200n0 nennen nennen nennen 23 5 3 Single shot and continuous scanning modes 23 7 T ROUBLESHOOTING 5 4 Gain ACJUSTMENL ce ccccceececceeececceeeeeceeeeeceeeecseeeesseseeeseaes 23 5 5 Tone generator cccceccccssccceeececseceseeceseuecenseeeneueessueeenseeeneas 24 3 6 SG COMMAS nee arena la 24 57 Typeal faul disla S ea 25 NOTICE 5 8 Typical cable Vp and impedance values 0s 0enuni 25 yP j d Damage to devices due to improper handling 6 DTS ANC Seesen 26 o The user is liable for damages caused due to improper maintenance or car
16. far end of the cable under test is open or shorted not fitted with a resistive termination 5 Attach the TDR 500 to one end of the cable to be tested Short circuit the test object to earth Protect or isolate the test object from adjoining live HV plant v v v v wv 12 32 21 32 User manual TDR 500 First operation 4 7 4 8 4 9 20 32 Set contrast oo a a YS FJ e Select Alusing the P keys Press SELECT key to open Press lt or P to select To open the S menu press SELECT Press or P to increase or decrease contrast To exit press Backlight The LCD display is fitted with an LED backlight to enable easy viewing under a variety of different lighting conditions The backlight is switched on and off with the 7 key How to determine Vp settings If the TDR 500 is to be used with a cable type for which the Vp is unknown this must first be determined 1 2 Take a sample of the cable at least 100 m or 300 ft long Measure the actual length of cable using a rule or tape measure or some other reliable method Connect the TDR 500 and adjust the Vp setting such that the tester gives a correct reading of the sample length User manual TDR 500 For your safet DANGER High electric voltage Danger to life or risk of injury due to electric shock gt Before commencing work the operator must assess the risks for the specific working conditions Protective measures are
17. hance the displayed trace A 6 km cable route can be scanned in seconds allowing the operators a view of the cable route yet arriving quickly to the fault By using the TDR 500 scan lock facility cable can be continually scanned or the trace held for closer analysis To enable the TDR 500 to test all metallic cables four user selectable output impedances are provided 25 50 75 and 100 ohms Faulty cables may be traced using the TDR 500 warble tone feature an oscillating tone is injected into the suspect power or transmission line and by using a commercially available tone tracing probe the suspect line can be identified 4 5 4 6 User manual TDR 500 First operation 3 Press W to move to unit of measure feet or meters 4 Press 4 or P to scroll between feet and meters 5 To exit press Selected values will be automatically stored Note When unit of measure has been selected this will automatically change the V 2 figure which will also be displayed in the selected unit of measure ft m Set cable impedance Z TDR V 2 m us 100m us 7 Coax 750 Metres Contrast Shutdown 2minutes Select Alusing the lt gt keys Press SELECT key to open Press W to move to Z Press or P to scroll between values oo ea Say gt To exit press Selected values will be automatically stored Set velocity of propagation Vp Velocity of propagation Vp may be set as UC or speed in micro seconds
18. mended that the batteries are removed and stored separately User manual TDR 500 Table of contents Table of contents 1 ASN eee E E ceteris cee ete A eet saeco 7 1 1 Using this manual cc ccceececeeeeeeeeeeseeeeeaeeeeseeeeseeeeeeeeesseneess T 1 2 Application of instructions ccccccccccceeceeeeeeeceeeeeseeeeseeeeeaeeeees 1 1 3 Structure of safety instructions u 2220s22sueennneenennenennenenneennnn 7 1 4 Symbols used ccccceccccceeeeeeeeeeeeeseeeeeeeeeeeseeeesseeeeesaeeeeeseeeeeeas 9 1 5 Information on the screenshots and graphics used 9 1 0 AV ATLAN rennen ee ee 9 1 7 After Sales Service uusssennsnnnneonnennnnnonnennennonnennennonnnnnnnenne nen 9 2 FOR your safety ee ee re une 10 2 1 Instructions for the user 2202u0s20000nnennennennennennennennennennennen 10 22 Wenden Uses ee 11 2 3 Avoiding dangers taking safety measures ccceeseeeeee eens 11 2 3 1 Dangers when working with high voltage 12 3 PROGUCT IMTOFMANIOM an 14 3 1 PCN SUF AMOI riesen hl 15 32 PACCUIACY oea EEAS 16 4 IS ODELANON see teens Serena 16 4 1 Preparing the TDR 500 for use unuuuuessnesnennnenneennenneenennneenn 17 4 2 Menu and screen displays uus uuu044nsnenne nenne nnennnenne nennen 17 4 3 Set auto shutdown ue susseennennennennennnnonnnnnnnnnnnennnnnennennnnnennen 18 4 4 Set unit Of measure n uussenn
19. n Before operating the device or system you should read and understand this user manual and the user manuals of all integrated devices Instructions for the user The product may be operated only by authorised and trained electrical engineers An electrical engineer is a person who owing to his professional education electrical engineering knowledge experience and acquaintance with the applicable standards and regulations can assess the tasks assigned to him and detect possible dangers In addition the user must have Knowledge of the technical equipment and operation of TDR 500 Knowledge of the testing and measurement procedures Knowledge of plant engineering cable types switchgear etc i Responsible body is the person or group that is responsible for the safe operation of the device and its maintenance EN 61010 1 3 5 12 z Operator is the person who uses the device for its intended purpose according to the definition of user in compliance with EN 61010 1 3 5 11 10 32 5 2 9 3 5 4 User manual TDR 500 Using the TDR 500 On the fault display shown above a low impedance fault occurs at 64 meters shown by a negative spike and high impedance at 129 meters To increase the gain of the return pulse see chapter 5 4 The open end of the cable is shown as a large positive spike this is used to determine the end of the cable route and the overall length of the cable being 180 meters Selecting range scales
20. nstructions and regulations of the country where TDR 500 is being used according to the latest version EU EFTA countries EN 50110 Operation of electrical installations Other countries The standards for operating electric systems applicable in your country f necessary other national and international standards and guidelines in the latest applicable version Local safety and accident prevention regulations Employers liability insurance association regulations if any 11 32 User manual TDR 500 For your safety User manual TDR 500 Using the TDR 500 5 USING THE TDR 500 Technically secure state of the device Safety function and availability depend on the proper condition of the device Upgrades modifications or alterations to the product are prohibited gt Operate the device only in a technically perfect condition gt Inthe case of damage and or malfunction immediately stop the device DANGER identify accordingly and have the faults rectified by appropriately qualified and authorised personnel gt Comply with the inspection and maintenance conditions gt Use only accessories and original spare parts recommended by BAUR The use of spare parts accessories and optional extras that are not gt Before test connections are made switch off de energise tested and approved by BAUR could adversely affect the safety and isolate the circuit under test function and characteristics of the product
21. y showing impedance anomalies is shown below Further examples are shown in chapter 5 7 page 25 120 1am 1 To determine the distance move the vertical cursor line left or right along the line of the trace to the event by pressing 4 or gt 2 Position the cursor at the beginning of the event and read off the distance at the bottom left corner 2 2 2 3 User manual TDR 500 For your safet Intended use The BAUR handheld time domain reflectometer TDR 500 is used for fault location in all metal cables such as power cables coaxial cables data cables and communication cables The TDR 500 is designed for use on de energised circuits only This device meets the immunity requirements of telecom networks according to EN 61326 1 If the device is used without observing this condition safe operation cannot be guaranteed The operator or user is liable for any damage to persons and property resulting from incorrect operation Proper use also includes Compliance with all instructions in this user manual Compliance with the technical data and connection requirements given on the rating plate and in the user manual Compliance with the inspection and maintenance tasks Avoiding dangers taking safety measures gt When installing the test system and operating the TDR 500 observe the following rules and guidelines Accident prevention and environment protection rules applicable for your country Safety i
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