User Manual
Contents
1. shapes are hidden Move the cursor to the appropriate field using the rotary knob and press the knob to select Now you can alter the value A further press on the rotary knob confirms your input Store otores the test procedure Main menu Back to the main menu Back Back to previous menu point 23 SAUN 6 2 2 Amending existing test procedures Select test procedure Main menu In the Select test procedure menu you can select a defined test procedure using the rotary knob Pressing the knob confirms your input The following step corresponds with that for defining a new test procedure 6 2 1 Defining a new test procedure The initial settings correspond with those for the stored test procedure Main menu Back to the main menu 6 2 3 Copying and amending a test procedure Select test procedure Main menu 6 2 4 Deleting a test procedure Select test procedure Main menu In the Select test procedure menu you can select a defined test procedure using the rotary knob Pressing the knob confirms your input The following step corresponds with that for defining a new test procedure gt 6 2 1 Defining a new test procedure The initial settings are copied from the existing test procedure and a name suggested This can be changed to suit the user Main menu Back to the main menu In the Select test procedure menu you can select an existing test procedure using the2. XX C Thv XX C T XX XX X min S X X Stop Voltage You can access the menu Manual test from the main menu Here you can select from the various voltage shapes generated by frida Main menu Back to the main menu 2 truesinus a digital technology In the VLF sinus auto mode the device selects the frequency to match the applied load Start starts the measurement Back Back to previous menu point Settings Opens the settings dialogue Attention High voltage is present at the output To end the test select Stop In manual mode the generator always starts with a set voltage of 1kV Voltage input is activated by the menu point Voltage The set voltage can be altered by moving cursor to the value for Usoll with the rotary knob and selecting it by pressing the knob Now you can alter the value 16 Duration of test min Switch on delay min Temperature Load Record Current Burn down Possible results Manual testing VLF sinus auto Test interrupted by user OK X X mA Tamb XX C X X mA Tamh XX C Manual testing VLF sinus auto X X mA Tamh XX C Manual testing VLF sinus auto X X mA Tamh XX C SAUN In the Settings menu you can change various settings for the test methods Duration of test In manual mode the test ends after the set period owitch on delay The test begins only after the expiry of the
3. on delay The test begins only after the expiry of the period set here Back Temperature Display on off Load Display on off Record Record function on off Current Display on off Burn down Burn down mode on off 19 5 4 Square auto In the VLF square auto mode the device selects the r U XXW slew rate to match the applied load r XXX Hz R XXXXQ Start starts the measurement Usoll X XX kV C XXXXF X X mA Tamb XX C rr Slewr XXX kV s Thv XX C Back Back to previous menu point T XX XX X min S X X Settings Opens the settings dialogue Settings Attention High voltage is present at the output To end the test select Stop p nn X min Voltage activates voltage input Stop Voltage In the Settings menu you can change various settings for the test methods Duration of test min X Switch on delay min X Temperature on off Duration of test In manual mode the test ends Load on off Record on off after the set period Current on off Burn down on off Switch on delay The test begins only after the Slew rat off i i ew rate ui expiry of the period set here Temperature Display on off Load Display on off Record Record function on off Current Display on off Burn down Burn down mode on off Slew rate Display on off 20 5 5 Square In VLF square mode the frequency and the slew rate can be set by the user Frequency Slew rate To do t
4. period set here Temperature Display on off Load Display on off Record Record function on off Current Display on off Burn down Burn down mode on off If the test is ended with Stop a message appears which can be confirmed by pressing the rotary knob After expiry of the set test duration the generator stops automatically The device found no breakdown The device found a breakdown If burn down is activated the generator automatically switches into burn down mode If burn down is not activated the generator switches off An error has occurred during the test e gt 9 2 Error messages 17 5 2 VLF sinus In VLF Sinus mode the frequency can be set by the user Frequency To do this move the cursor to the value for the frequency using the rotary knob and press the knob to select Now you can alter the value A further press on the rotary knob confirms your input Main menu Next Forward to the next menu point Back Back to previous menu point Main menu Back to the main menu Start starts the measurement uva U X X kVrms r X XX Hz R XXXXO Back Back to previous menu point Usoll X XXkVrms C XXXXF X X mA Tamb XX C Thv XX C ee T XX XX X min Settings Opens the settings dialogue S X X Start Settings Attention High voltage is present at the output T XX XX X min S X X gaz Voltage To end the test select Stop Voltage acti
5. rotary knob Pressing the knob confirms your input The message appears Attention Deleting a test procedure To delete a test procedure this prompt must be confirmed with OK Main menu Back to the main menu 24 7 Extras device settings Extras Info Language Time amp date Settings Main menu FW Version Card B VLF23 V0 2 6 Bld Sep 04 2006 10 54 28 FW Version USB V0 0 5 FW Version Card A V3 00 Baur Pr f und Messtechnik GmbH Phone 43 55 22 4941 0 Main menu German English Dutch Main menu Time amp date 16 33 19 09 2006 dd mm yy Main menu SAUN 7 1 Extras The Extras menu allows you to set various parameters on frida 7 2 Info Information about the firmware versions of the frida components can be accessed from the Extras menu under Info 7 3 Language In the Language menu you can make frida country specific The display and the record will then appear in the selected language T 4 Time amp date The current date and time can be set in the Extras menu under Time amp date The date is added to every stored test record and displayed in the main menu 25 SAUN 7 5 Settings Duration of test min X In the Settings menu you can change various Switch on delay min X settings for the test methods Temperature on off Load on off l Record on off Duration of test In manual mode the test en
6. 2 1 Defining a new test procedure Define test procedure Name Name XXXXXXX Number of steps 1 10 X Main menu Define test procedure Voltage shape VLF Sinus DC DC DC HEctangular Main menu Define test procedure Voltage Frequency auto X XX Hz Max voltage XX kVrms Burn on off Slew rate auto XX kV s Main menu Define test procedure Steps Voltage shape Frequency Hz Max voltage kV otep Duration of test Test voltage Store Main menu First enter the name and number of voltage steps for the new test procedure To do this move the cursor to the value for the name or number of steps using the rotary knob and press the knob to select Now you can alter the value A further press on the rotary knob confirms your input Next Forward to the next menu point Main menu Back to the main menu Back Back to previous menu point Use the rotary knob to select the voltage shape The next screen is called up automatically Next Forward to the next menu point Main menu Back to the main menu Back Back to previous menu point Move the cursor to the appropriate field using the rotary knob and press the knob to select Now you can alter the value A further press on the rotary knob confirms your input Next Forward to the next menu point Main menu Back to the main menu Back Back to previous menu point Note Some of the parameters for the various voltage
7. GAUN User Manual frida Portable VLF High Voltage Testing Device xa truesinus digital technology v 6 e Hef No 822 125 10 2006 BAUR Pr f und Messtechnik GmbH e mail headoffice baur at Tel 43 5522 4941 0 Raiffeisenstrasse 8 A 6832 Sulz Austria Internet www baur at Fax 43 5522 4941 3 BRAUN Symbols in this user manual To find the important information quickly the appropriate passages of text are marked with symbols any symbols not listed here are self explanatory Additional and special information literature etc on the relevant subject are available from BAUR Important information about the device You must read it DEE This text contains important information Copyright BAUR Pr f und Messtechnik GmbH A 6832 Sulz Austria All rights reserved No part of this publication may in any way or form be reproduced transmitted communicated stored in a computer system or translated into another language without the written permission of BAUR 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 Preface This manual contains all the necessary information about the correct use of the described devices Please read this ma
8. ate Manual testing Load settings from last measurement Start test procedure Define test procedure Cable sheath fault Extras Date Manual testing VLF sinus auto va U XXkVms f XXXHz R XXXXo Usoll X XXkVrms C XXXXF I XXmA Tamb XX C Thy XX C T XX XX X min S X X Start Settings From the main menu you can select different test methods define test procedures or make device settings Turning the rotary knob allows you to choose between the various menu points Turn the knob clockwise And the selection highlight moves downwards Press the knob to confirm your selection The corresponding menu appears The bottom line of the monitor offers further options to move within the frida menu system Back Back to previous menu point Main menu Back to the main menu Settings Opens the menu with parameters Next Forward to the next menu point If high voltage has not been enabled a prompt appears indicating that this still remains to be done 15 5 Manual testing Manual testing VLF sinus auto VLF sinus DC Square auto Square Main menu 5 1 VLF sinus auto Manual testing VLF sinus auto Ar U XXkVms r X XX Hz R XXXX Q Usoll X XX kVrms C XXXX F s X X mA Tamb XX C Thv AX CC T XX XX X min S X X Start Settings Manual testing VLF sinus auto IT U XXkVms t X XX Hz A XXXX O Usol X XXkVrms C XXXX F X X mA Tamb
9. ated The frequency of the created alternating voltage can be varied within the range 0 01 Hz to 0 1 Hz to extend the load range either manually or automatically The device also has a preset mode for cable sheath fault testing and location 1 1 Cable testing The use of oiled paper and mass impregnated cables in energy transmission by plastic cables has required changes in cable testing procedures The DC test procedure used successfully for decades for paper insulated mass impregnated cables proved unsuitable for the testing of plastic cables On the one hand serious faults were seldom detected whilst on the other hand the use of DC tests led to the build up of long lasting space charges These space charges can lead to the insulation strength being exceeded locally when the operating AC voltage is applied and to the formation of electrical trees The insulation is irreversibly damaged by this and complete breakdown is only a matter of time Something that countless failures of plastic insulated cables after successful DC testing confirm For this reason the industry has been searching for several years for a new way of testing plastic cables Testing at very low frequency VLF which is also suitable for mass cables has replaced DC testing in practice In terms of official standards the 0 1 Hz high voltage test has been accepted as an alternative testing technique to DC testing in the European harmonisation document CENELEC HD 620 51 for plastic in
10. ce may be carried out only by instructed authorised service personnel Service personnel 9 2 can call upon appropriate training experience and instruction have knowledge of the applicable standards regulations accident prevention legislation and operating conditions are in the position to carry out the required tasks whilst recognising and avoiding the possible dangers are obliged to report immediately any changes occurring in the device that detrimentally affect safety are familiar with the device its functions and the possible sources of danger can call upon their knowledge for the maintenance and servicing of the device have been expressly authorised by BAUR to open the device and carry out modifications to it Error messages If an error message appears check the supply voltage and connection cables If the message appears again make a note of the error text and the procedure that led up to the error Inform your nearest BAUR representative who will immediately provide you with further help 9 3 Cleaning Clean the device especially the display preferably using a dry or slightly damp cloth only You may use a mild cleaning agent for cleaning the housing Never use an abrasive cleaning agent Do not use chemicals or benzene for cleaning Do not allow liquids to get inside the device Never immerse the device in water Close the lid of the device before you put it away The integrated rubber seal in the
11. ched on and off on the frida testing device using the three keys to the left of the display The yellow background illumination indicates which key needs to be pressed for the next step A flashing or illuminated HV light indicates the system status High voltage can also be enabled later but no later than the start of a test High voltage is not necessary for making the system settings or for entering test procedures Ready for operation Enable high voltage Press the READY key b High voltage ready to switch on Enable high voltage Press the ON key c In operation Manual testing Load settings from last measurement Start test procedure Define test procedure Cable sheath fault Extras Date Switching on the main switch places the device in the Ready for operation state This state is indicated by the illumination of the green light Press the yellow highlighted key for a minimum of 1 second Displayed by a red flashing warning light 6 seconds c To set the device In operation the key must be pressed within the period that the light is flashing If the key is not pressed within this time the device reverts to the Ready for operation state Operation is indicated by the red illuminated warning light On switching on frida displays main menu Attention In the Operation state it must AN be assumed that high voltage is present at the output 13 Switching off Aft
12. ds Current onon after the set period Burn down on off Slew rate on off Switch on delay The test begins only after the RAS expiry of the period set here Temperature Display on off Load Display on off Record Record function on off Current Display on off Burn down Burn down mode on off Slew rate Display on off 7 6 Updating Frida can be updated Please contact your local representative or Baur after sales service 26 8 Technical data 8 1 General technical data Power supply 110 Vac 230 Vac 50 Hz 60 Hz Max input power 350 W Max input current 110 Vac Output voltage DC 1 kV 30 kV Maximum operating time without 60 minutes interruption Duty cycle 1h operation 4h pause Length HV feed cable 5m Monitor Illuminated LCD display automatic brightness adjustment 20 60 C DIN EN 60068 2 1 and 2 2 USB 2 0 USB2 0 We reserve the right to make modifications 27 8 2 Load diagram Load diagram VLF truesinus 10 0 01 Hz Load pF 0 03 Hz 1 0 05 Hz 0 1 Hz 0 1 0 10 15 20 25 Voltage kVrms Load diagram VLF Square wave 10 0 03 H 0 05 Hz S m 0 1 Hz 0 1 0 15 20 25 30 Voltage kVpeak 28 9 Maintenance 9 1 Servicing T On grounds of safety measures that involve opening the devi
13. ecided by us all parts that can be shown to have become defective or unusable as a result of poor materials defective design or faulty construction We will bear only the cost of the repair and the parts replaced Transport to us and back to you packaging and insurance shall be at the cost of the purchaser The period of warranty is 12 months from the date of delivery We accept no liability for damage arising from normal wear improper handling or non observance of the instructions for use or safety advice We refuse to accept any liability if the purchaser himself or a third party carries out repairs or modifications to the device Transport damage and wear parts e g fuses are not covered by the warranty In addition we refer you to the General Conditions of Sale and Supply of BAUR Pr f und Messtechnik GmbH Raiffeisenstrasse 8 A 6832 Sulz Austria SARUN Table of contents 1 Use 5 1 1 Cable testing 5 1 2 Cable sheath testing f 1 3 Cable sheath fault location 7 2 Features 8 3 Operating controls 9 3 1 High voltage operating control unit 9 3 2 Connection panel right side 9 3 3 Connection panel left side 9 3 4 Menu navigation 9 3 5 Voltage and current display 9 4 Bringing into use 10 4 1 Important basic rules 10 4 2 Discharge and earth rod 10 4 3 Preparing the device for cable testing 11 4 4 Switching high voltage on and off 13 4 5 Load determination 14 4 6 Using the menu 15 5 Manual testing 16 5 1 VLF si
14. er completing the cable testing L O Press this key This key activates the discharge device which discharges the cable and the internal capacitor through resistances The device is once more in the Ready for operation state For safety reasons the high voltage connection must be earthed before making any contact The BAUR discharge and earth rod is used for this Emergency off After activating the emergency off switch frida returns to the Ready for operation state The emergency off message must be cancelled 4 5 Load determination Before the start of a measurement frida determines the size of the applied load This information is required to achieve the best match of the device s regulation system to the object under test Load determination restarts every time high voltage is switched on In operation and is retained until high voltage is switched off again Ready for operation A message appears on the monitor during load Load determination is running determination Load determination takes between n 10 and 20 seconds per load Attention High voltage is present at the output 14 4 6 Using the menu SAUN After connection to the network and bringing into use frida displays the main menu All applications can be selected from the main menu Main menu ___ L ALES UT EET CEST ETATS Load settings from last measurement Start test procedure Define test procedure Cable sheath fault Extras D
15. explosive atmosphere earthed by means of a discharge earth rod It must remain earthed whilst you are A Before every contact with the object to be tested it must be discharged and working on the object 4 2 Discharge and earth rod The protective ground cable of the discharge and earth rod must be connected to the station ground The discharge resistance of the combined discharge and earth rod can be short circuited to earth the object under test 1 1 Dei Discharge rod Earth rod The object under test is discharged by the frida VLF generator after proper completion of a test Before any contact with the object under test it must be earthed There may still be voltage at the object under test after a breakdown in the cable or after an interruption in measurement e g by pressing the emergency off button and therefore it must first be completely discharged and then earthed before any contact is made be solidly connected to the station ground or protective ground Touch the rod only by its handle when discharging and or earthing the rod The minimum discharge time stipulated on the discharge rod must be observed when discharging it For proper discharge and or earthing the protective ground cable of the rod must 10 BRAUN 4 3 Preparing the device for cable testing Preparing the cable Disconnect the object under test on all contacts secure against it being switched on again and check that it is deenergised Isolate ad
16. from the defined test procedures using the rotary knob Pressing the knob confirms your input Main menu Back to the main menu Main menu The device displays the screen for the selected test procedure The arrangement on the screen corresponds to that for the manual mode In addition SYMBOL U XXkv 1T 7 r X XX Hz R XXXXO the current step and the number of steps is Usoll XXXkV C XXXXF displayed X X mA Tamb XX C i Slewr XXX Wis Thv XX C Start starts the measurement T XX XX X min S X X Back Back to previous menu point Settings i i Attention High voltage is present at the output In the Settings menu you can change various settings for the test methods SET ETES RIRE sess Switch on delay The test begins only after the Temperature on off i Load An off expiry of the period set here d SUS Temperature Display on off Burn down on off Load Display on off Slew rate on off Record Record function on off Current Display on off Burn down Burn down mode on off Slew rate Display on off 6 2 Defining a test procedure Define test procedure There are various ways to define a test procedure Define new test procedure Main menu Back to the main menu Amend existing test procedure Copy and amend test procedure Delete test procedure Main menu The slew rate is only active in the square voltage shape 22 SAUN 6
17. his move the cursor to the value for the frequency or slew rate using the rotary knob and press the knob to select Now you can alter the value A further press on the rotary knob confirms your input Main menu Next Forward to the next menu point Back Back to previous menu point Main menu Back to the main menu Start starts the measurement H m An Back Back to previous menu point f X XX Hz R XXXXQ Usoll X XX kV C XXXXF Settings Opens the settings dialogue l X X mA Tamb XX C Slewr XXX kV s Thv XX CC T XX XX X min S X X Attention High voltage is present Settings at the output T XX XX X min To end the test select Stop S X X Stop Voltage Voltage activates voltage input In the Settings menu you can change various settings for the test methods Duration of test min X Switch on delay min X Temperature on off Duration of test In manual mode the test ends Load on off Record on off after the set period Current on off Burn down on oli Switch on delay The test begins only after the Slew rat off ew rate e expiry of the period set here Temperature Display on off Load Display on off Record Record function on off Current Display on off Burn down Burn down mode on off Slew rate Display on off 21 6 Automatic test procedures 6 1 Starting a test procedure Select test procedure In the Select test procedure menu you can select
18. jacent live parts It must be ensured that when high voltage is applied there can be no arcing or breakdown to the adjacent parts of the station or the cabling In the case of multi wire objects under test all wires except for the ones being tested must be connected to the station ground Clean the terminals if necessary Connecting the protective ground cable Connect frida with the supplied protective ground cable yellow green at the protective ground connector connection panel to the station protective ground A screw terminal is provided on the protective ground cable for this Connecting the high voltage feed cable Connect the shielding connector of the high voltage feed cable to the earthed sheath of the cable under test Connect the high voltage connector with the centre conductor of the cable under test A crocodile clip is attached to the high voltage feed cable for this Please observe the advice about discharging and earthing and the general safety regulations 2 frid a Centre rida conductor D Terminal ym Shieldin Station and protective ground 11 BAUR Connecting to various cable types Connecting to a 3 phase shielded cable Connecting to a 1 phase shielded cable Connecting to a 3 phase unshielded cable if AN E AOU e D L2 L D L3 L IN 4 4 Switching high voltage on and off High voltage may be swit
19. lid protects the operating panel from dirt 29 10 Accessories options and spare parts 10 1 Delivery includes frida VLF generator including 5m high voltage cable Discharge earth rod EES 40 Ground line 10m Mains cable User manual de en USB memory stick Bridge connector emergency off Carrying sling 10 2 Optional accessories External emergency off An external emergency off switch with an indicator light is available to provide a higher level of safety when working in uncertain situations 10 3 Replacement parts If required the following replacement parts can be obtained from the Baur customer services department Discharge earth rod EES 40 Ground line Mains cable Crocodile clips red black USB memory stick Bridge connector emergency off Carrying sling BAUR BAUR Pr f und Messtechnik GmbH Raiffeisenstrasse 8 A 6832 Sulz Austria Tel 43 5522 4941 0 Fax 43 5522 4941 3 e mail headoffice baur at Internet www baur at 30
20. location of cable sheath faults To do this a cyclical voltage is applied in accordance with the diagram below The damage to the cable sheath can then be pin pointed with the step voltage meter SAUN 2 Features An important advantage of the device is its portability especially when used on site The compact design means that the device can also be carried within the site Testing in bad weather is not problem as the equipment is completely protected against splash water A graphics display with a menu for all control functions ensures ease and simplicity of operation User defined test sequences e g incremental voltage testing can be defined in order to set up an automatic test procedure All test records can be read out and printed from the USB memory stick Fully automatic test procedure in accordance with VDE DIN 0276 620 IEEE P400 2 VDE DIN 0276 621 and IEEE 400 2001 Input power only 350 W Short circuit proof Timer function with automatic switch off device Easy transportable Menu guided in different languages Safety equipment Constructed in accordance with VDE DIN 0104 EN 50191 Switch on interlock for high voltage zero interlock Emergency off switch Status display of all important safety functions Operating modes Automatic test procedures and manual tests VLF test at 0 1 Hz VLF test with automatic frequency selection DC voltage test Square wave voltage test Square wave voltage test with automatic freque
21. ncy selection Cable sheath fault location 3 Operating controls 3 1 High voltage operating control unit Press the READY key 1 Main switch For switching frida on and off 2 HV keys High voltage HV ready on off 3 Display Displays of menus and readings 4 Rotary knob Navigation and confirm button press 5 Status indicator high voltage Attention red light HV on 6 USB socket Data exchange by USB memory stick 7 Emergency off Switches off the high voltage 3 2 Connection panel right side 1 Network connection 2 Ground line 3 3 Connection panel left side 1 External emergency off plug socket 3 4 Menu navigation Selecting the fields in the toolbar Turn the rotary knob to move the selection highlighting over the fields To select press the rotary knob 3 5 Voltage and current display Different values are used for display and input depending on the selected voltage shape Sinus DC oquare Sheath fault location Voltage set Effective Transient Peak Peak Voltage display Effective Transient Peak Transient Current display Effective Transient Leakage Transient BRAUN 4 Bringing into use 4 1 Important basic rules frida is used to test disconnected lengths of cable Before connecting the device to the cable length to be tested you must therefore ensure that the cable is disconnected and deenergised Observe the statutory and operational safety regulations Never operate the device in a potentially
22. nual carefully before you use the devices SAUR BAUR Pr f und Messtechnik GmbH Raiffeisenstrasse 8 A 6832 Sulz Austria Tel 443 5522 4941 0 e mail mailto headoffice baur at Fax 43 5522 4941 3 Internet www baur at or contact your nearest BAUR representative Safety advice Proper use Warranty AUR The system has been manufactured to the current state of technology and is safe to operate The individual parts and the finished devices are continuously tested within the scope of our quality assurance measures by our qualified personnel Every device is fully tested before delivery Every person who deals with the connection bringing into use operation or maintenance of the product must have read and understood the complete user manual The operating company must therefore ensure that only authorised persons work with the system The operating person is obliged to report immediately any changes occurring in the device that detrimentally affect safety frida is used to test high voltage cables and rotating machines Any other use or use exceeding the above shall be considered improper use The manufacturer will not be liable for the resulting damages The risk is carried solely by the user In every case the local safety and accident prevention legislation shall apply to the operation of the system We are obliged on the written request of the purchaser as quickly as possible to make good or replace as d
23. nus auto 16 5 2 VLF sinus 18 5 3 DC 19 5 4 Square auto 20 5 5 Square 21 6 Automatic test procedures 22 6 1 Starting a test procedure 22 6 2 Defining a test procedure 22 6 2 1 Defining a new test procedure 23 6 2 2 Amending existing test procedures 24 6 2 3 Copying and amending a test procedure 24 6 2 4 Deleting a test procedure 24 7 Extras device settings 25 7 1 Extras 25 7 2 Info 25 7 3 Language 25 7 4 Time amp date 25 7 5 Settings 26 7 6 Updating 26 8 Technical data 27 8 1 General technical data 27 8 2 Load diagram 28 9 Maintenance 29 9 1 Servicing 29 9 2 Error messages 29 9 3 Cleaning 29 10 Accessories options and spare parts 30 10 1 Delivery includes 30 10 2 Optional accessories 30 10 3 Replacement parts 30 SAUN 1 Use The frida high voltage test generator is used for the testing of medium voltage cables with extruded insulation in accordance with VDE DIN 0276 620 CENELEC HD 620 and IEEE P400 2 for impregnated paper insulation in accordance with VDE DIN 0276 621 CENELEC HD 621 and IEEE Std 400 2001 and other high voltage insulation up to 23 KV uns VLF very low frequency testing allows insulation damage to be detected in the shortest possible testing time and does not detrimentally affect the quality of the insulation material Furthermore with frida you can carry out DC testing up to 30 kV The device also allows a square wave voltage of 30 kV with an adjustable slew rate to be cre
24. sulated and in HD 621 S1 for oiled and mass impregnated cables Page 5 C 16 E DIN VDE 0276 620 VDE 0276 Part 620 2000 12 SAUN Recommended tests after cable installation if required 1 1 1 2 1 Tests Voltage test on the insulation Test AC voltage 45 to 65 Hz Testing level effective value Duration of test Alternative Test AC voltage 0 1 Hz Testing level effective value Duration of test Test for intactness of the plastic outer sheath on installed cables 2 Us 60 min 3 Uo 60 min Requirements Test procedure No breakdown No breakdown It is recommended not to exceed a voltage of 3 kV or 5 kV respectively when using DC voltage for PVC or PE sheaths The information on any damage to a cable sheath normally appears within one minute The test levels and durations are given as preferred values and have been determined based on the currently available experience of labour and networks If the cable ends in a transformer or in sealed switchgear then this test requires the customer to obtain the agreement of the manufacturer of the transformer or the switchgear SAUN 1 2 Cable sheath testing Cable sheath testing is carried out in order to detect damage to cable sheaths To do this a DC test is carried out in accordance with the applicable standard see table above 1 3 Cable sheath fault location frida can be used in combination with a step voltage meter e g UL to pin point the
25. vates voltage input In the Settings menu you can change various settings for the test methods Duration of test min X Switch on delay min X Lege Duration of test In manual mode the test ends Record anion after the set period Current on off alia omen Switch on delay The test begins only after the expiry of the period set here Back Temperature Display on off Load Display on off Record Record function on off Current Display on off Burn down Burn down mode on off 18 5 3 DC DC selection There are various options for DC mode They differ only in the possible polarities of the voltage DC allows only positive voltages DC allows only negative voltages DC has no limitations on polarity Back Back to previous menu point Main menu Main menu Back to the main menu Start starts the measurement DC E Back Back to previous menu point f X XX Hz R XXXXQo Usoll X XX kV C XXXXF Gahaa i ipd oce dE e Settings Opens the settings dialogue Thy XX C T OCXX X min an Attention High voltage is present en at the output T OCXX X min To end the test select Stop S X X Voltage activates voltage input In the Settings menu you can change various settings for the test methods Duration of test min X Switch on delay min X re S Duration of test In manual mode the test ends Record anoi after the set period Current on off PUAN omen Switch
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