ENGLISH User's manual
Contents
1. ccccceecsecseseeseeseeseesensenseneensensenseneenseneeneeeenes 26 5 1 How tO SAVE measures ccc ccccceccecceeecneceeceeeceeeaseceeceeeseeceeeceeceeesueteecseeseeseeessetseseeetaeeeeseetes 26 5 2 How to delete the last or all the measures Saved in the memory cceecceeeeeeeeeeeeeeees 26 5 3 How to recall measures cc isciezucasausiansedeenonanmeeveubesaeabaladecncaanaesneneiasenessncsvoyaxeurtuewnnseeansaeannnasn 2 6 RESET OF INSTRUMENT 0 ccccsecnseneenseneseeeeeeeseesnesensensenseasensensensenseneeneeneenseneenes 28 7 CONNECTION OF THE INSTRUMENT TO PC eee cceeeeeeeeeeeeeensenseensenseeeeensenees 28 8 MAINTENANCE seese eee ca deat va dectc cece ecuaeeucevecevesessucvessvsseusvedeuevsdecsccuecedeesvuaees 29 Cel General INIONMAUON sccccuecxcctranenconnironsevecsnosinenctascimedsimtwannsspanonpendsusnasuiecteasteyesensstaaiyapeuinewiteantes 29 8 2 Cleaning the inStrUMent ccccccccseeccsseccececeeeccaeecaeeceeesgeesaeesseeesaeeseessusesageesueeseseaaeess 29 EFC OTIS orreen E EE E E E E EAE E E E E EA E 29 9 TECHNICAL SPECIFICATIONG 0 ccccsscssssssnnsnnsnnsensnnsensnnnennensensensensensennensenssnnenssans 30 gA DSTI OA esse E E A 30 9 2 Technical specifications ccccceccecesseeseeeeseceeeteeeceeeceeeseeeeeecaeeceeeteeeseeeeaeesueteeetaeeteeetaeeees 30 EEE SU a r A AE A E A E R 32 g4 General CATA NSW CS screener A E Er EEE 32 Fo EVOM N eea ea E E A E TE 33 9 4 1 Environmental2. e maximum value of the insulation resistance MAX in a range between MIN 10TQ e test time value in a range between OOmin 05sec 99min 59 sec Press the arrow keys to change the value of the parameters a long pressing of the keys allows a rapid change of the values C MODE Press the MODE CLEAR SMOOTH key to remove the limit a values set for the parameters The display shows the message no to indicate that there is no limit set d After setting press the SAVE key to save the changes or NY made or press the ESC RECALL MEM key to exit without saving and return to the previous screen EN 12 iw H7057 4 7 ADJUST 100V 5000V MODE This function is performed in compliance with standard IEC EN6155 7 2 The ADJUST mode allows the fine adjustment of the test voltage between 100 S5000VDC WARNING The instrument may be used on installations of overvoltage category CAT IV 600V to earth with maximum voltage 600V between inputs Do not connect the instrument to installations with voltages exceeding the limit values indicated in this manual If these limit values are exceeded the operator may be exposed to electrical shocks and the instrument could get damaged Always connect the measuring leads to the instrument and to the alligator clips with the accessories disconnected from the system We recommend holding the alligator clip respecting the safety area marked by the hand protection see par 4 3
3. iw HT7051 8 MAINTENANCE 8 1 GENERAL INFORMATION The instrument You purchased is a precision instrument During use and storage carefully observe the recommendations listed in this manual in order to prevent possible damage or dangers during use Do not use the instrument in environments with high humidity levels or at high temperatures Do not directly expose to sunlight Always turn off the instrument after use Never remove the front panel of the instrument The instrument don t need any particular maintenance 8 2 CLEANING THE INSTRUMENT To clean the instrument use a soft dry cloth Never use humid cloths solvents water etc 8 3 END OF LIFE Warning the reported symbol indicates that the appliance and its accessories must be disposed of separately and treated correctly EN 29 iw HT7054 9 TECHNICAL SPECIFICATIONS 9 1 DEFINITION Guidelines IEC EN61557 5 defines the Intrinsic uncertainty and the Operating uncertainty The Intrinsic uncertainty is the uncertainty of a measuring instrument or supply instrument when used under reference conditions The operating instrumental uncertainty is the instrumental uncertainty under the rated operating conditions The maximum percentage operating error within the measurement range does not exceed 30 with the measured value as fiducial value as determined in accordance with the following TABLE Requirements or test in accordance with the relevant parts of IEC 61557 Int
4. ENGLISH User s manual CE Copyright HT ITALIA 2008 Release EN 1 02 16 07 2008 iw H7057 Content 1 PRECAUTIONS AND SAFETY MEASURES ccccesceeesseseeseeeeeeeeeseeseesensensensensenes 2 1 1 Preliminary instructions sec scscdce ciaranesncocwanwneee vecbancade cedeaeas reece deceduuecocemetieatenetdadaonetedaesategacasne 2 Ms DUMU E esee e E E E actuate snmeneesesnectae 3 ES ATUS a O E E E E 3 1 4 Definition of measurement Overvoltage category ccccceeccceeeceeceeeeeeeeeeseeeteeeeseeeseeeeseees 3 2 GENERAL DESCRIPTION sicivenicceusintncsvusstuacisnsiwonsenedawenesawasanauenueawincbuscnuustinwanwenananeeawanets 4 2 1 Instrument IC UO INS sisariensa NENNE Aaa aain 4 3 PREPARATION FOR USE uu cc ccccecceseecnsenscnsenseneesenseneeneenseeeeeeeeseesnesenseasensenseasenseneens 4 31 ANMUUAl WASPS CHONS sennae enn er N EEEN EANET Er OTETA SN EE EEEE AA 4 22 WMS ENUM IL power SUDO IY sects nc cnee sceptics pr EE aE A SDE Err 4 ee C 9 lt 10 0 ee nn a ee en ee ere 4 oR ee 2 8 kee eee ee eee ee ee eee eee ae eer eee eee te 4 4 OPERATING INSTRUCTIONS 2 ce cascesenesscnscnsensenseneeeeeeeeeeneeeuseuseuseuseussaueassneeeens 5 4 1 Instrument GESCTIPTION cece cece ecce eee eeceeeceeceeceeeseeeaeecaecaeceeesaeeseeeeeceeessetsesaeeseeseeesseseeseeeees 5 A 2 Tuning OM ihe AAS RUMI GING essea EEE AEE 6 4 2 1 Display CESCID UO Wsacicascatacicentensnatiencekancue EE RA E OEE A EAA EE
5. screen 2 If upon pressing the START STOP key with nominal test voltage set to lt 1000V and load resistance gt 5MQ the capacitance at input leads Rx Rx is gt allowable limit capacitance the instrument gives a long acoustic signal and displays the screen reported here to the side for 3 seconds Afterwards the instrument returns to the initial screen 3 If upon pressing the START STOP key with 1000V lt nominal test voltage set lt 2500V and load resistance gt 5MQ the capacitance at input leads Rx Rx is gt allowable limit capacitance the instrument gives a long acoustic signal and displays the screen reported here to the side for 3 seconds Afterwards the instrument returns to the initial screen EN 24 iw HT7054 4 If upon pressing the START STOP key with 2500V lt nominal test voltage set lt 5000V and load resistance gt 5MQ the capacitance at input leads Rx Rx is gt allowable limit capacitance the instrument gives a long acoustic signal and displays the screen reported here to the side for 3 seconds Afterwards the instrument returns to the initial screen 5 If upon pressing the START STOP key or if while measuring an insufficient level of the supply battery voltage is detected so that the success of the test is prejudiced measurement does not start or is stopped The instrument gives a long acoustic signal and displays the screen reported here to the side for 3 se
6. FIX function selected R e the bar graph proportional to the HE Ti Ly AH A a aasan FIX measured resistance value MEASURING e the numerical indication of the A measured resistance e the actual test voltage e the symbol of the alarm bell if the measured value is not within the set limits and or if the value of the test voltage is lower than the set nominal value e the value of the test time elapsed or remaining if a test has been set e the plug symbol if the instrument is supplied from the mains EN 10 10 11a 11b 12 iw H7057 e the battery symbol steadily illuminated or flashing if batteries are flat or are being recharged e the timer symbol if the duration of the test has been preset e the two flash symbols to indicate a dangerous voltage e the message MEASURING While measuring it is also possible to display the leakage current the D A R Dielectric Absorption Ratio if test duration gt 1 minute the P I Polarization Index if test duration gt 10 minutes which cyclically show when pressing the arrow keys see note on P I and D A R in par 11 1 lf no measuring time was set when setting the parameters or if you want to stop the test in advance before the set time elapses press the START STOP key Once measurement is complete and 10M any capacitance has been discharged Janshen the instrument shows e the value of the measured insulation r
7. conditions fOr USEC ccccceeceeeseeceeeteseeeseeceeeteceteueeeeeeeeetaeeteneetsueeteeeeaeeeens 33 942 EMO ecrane E E E E E EA EE 33 96 ACCOSSOGS oerrinne aE E a EE 33 TO SERVIC E cean EEEE EEEE EE 34 10 1 Warranty COMOINOIS niciaceciesaviiewdnnientdivnsieniasindesnadnasieaheddaxienuscsinndanebandedinsidskionsndandeeenadedeetnichastserieendinbeuk 34 1O SENO E EE ee 34 11 THEORETICAL APPENDIX wisritiicncwnnscbccectedaceaceccusccssdeveuscersedunnecadesscaddussuedeueduceveccssceass 35 11 1P I Polarization Index and D A R Dielectric Absorption Ratio ccceceseeeeeeeeeeeeees 35 EN 1 iw HT7051 1 PRECAUTIONS AND SAFETY MEASURES The instrument has been designed in compliance with standards IEC EN61557 and IEC EN61010 1 regarding electronic measuring instruments WARNING procedures described in this manual and carefully read all notes preceded by the symbol A Before and during measurements carefully observe the following instructions Do not perform any measurement in humid environments in the presence of gas or explosive or inflammable material or in dusty areas Even when no measurements are being performed avoid any contact with the circuit being tested with exposed metal parts with unused measuring leads or circuits etc Do not perform any measurement when anomalies are found in the instrument such as deformations breaks substance leaks no display view etc Pay special attention w
8. the instruction manual The content of this manual cannot be reproduced in any form without the manufacturer s authorization Our products are patented and our trademarks are registered The manufacturer reserves the right to make changes in the specifications and prices if this is due to improvements in technology 10 2 SERVICE If the instrument does not operate properly before contacting the After sales Service please check the conditions of battery and cables and replace them if necessary Should the instrument still operate improperly check that the product is operated according to the instructions given in this manual Should the instrument be returned to the After sales Service or to a Dealer transport will be at the Customer s charge However shipment will be agreed in advance A report will always be enclosed to a shipment stating the reasons for the product s return Only use original packaging for shipment any damage due to the use of non original packaging material will be charged to the Customer EN 34 NHT HT7051 11 THEORETICAL APPENDIX 11 1 P I POLARIZATION INDEX AND D A R DIELECTRIC ABSORPTION RATIO The P I is defined as the relationship between the resistance value measured after 10 minutes and the value measured after 1 minute after applying the test voltage Therefore it is an indicator of the good quality of the insulating material A less precise evaluation but equally indicative of the ch
9. therefore OMISSIS it is necessary that the user knows the appliance s resistance to transients EN 3 NHT HT7051 2 GENERAL DESCRIPTION The instrument You purchased if used in compliance with the indications given in this manual guarantees accurate and reliable measurements and the utmost safety thanks to a development of new conception which ensures double insulation and consequently compliance with the requirements of overvoltage category IV 2 1 INSTRUMENT FUNCTIONS e Measurement of insulation resistance with nominal voltage which can be set between 100V and 5000V Measurement of the dielectric leakage current Measurement of the Polarization Index P I Measurement of the Dielectric Absorption Ratio D A R Capacitance measurement Multimeter function measurement of voltage at the instrument s input in real time up to 600VDC and AC 3 PREPARATION FOR USE 3 1 INITIAL INSPECTIONS Before shipment the instrument s electronics and mechanics have been inspected All possible precautions have been taken in order for the instrument to be delivered without damage However we recommend generally inspecting the instrument in order to detect any damage suffered during transport Should you detect any anomalies immediately contact the forwarding agent or the dealer Moreover we recommend checking that the package contains all parts listed in paragraph 9 6 Should you find any discrepancy please contact
10. 10 SAVE key 11 START STOP key 12 Display ad ee Fig 1 Instrument description Multifunction arrow keys e they have several functions which are described in detail below ON OFF and backlighting key e to turn on off the instrument e to turn on the display s backlighting for 20 seconds short pressing of the key with the instrument already on FUNC ERASE MEM key e to select the desired function e to delete the measurements saved during the display of memory data MODE CLEAR SMOOTH key e once a function has been selected pressing the key once changes the test mode if more modes are available e after pressing the SET DISPLAY MEM key pressing this key sets the default value of the selected parameter SET DISPLAY MEM key e once a function has been selected pressing the key once allows setting the test parameters e after pressing the ESC RECALL MEM key pressing this key displays the data of the measurement saved in the memory EN 5 iw H7057 ESC RECALL MEM key e once a function has been selected pressing the key once accesses the data saved in the memory if available e from a parameter setting screen or memory data display screen pressing the key once allows returning to the previous screen SAVE key e once a measurement has been completed pressing the key once allows saving the results in the memory e from a parameter setting screen pressing the key once allows saving the c
11. E EAAS f d2 AUO POWET OR eee ene ee ee 7 4 3 Description Of measuring ICAS ccc cecccceccceeccceeeceeeeceeeeeeeeseeeseeeeseeeseeeeseeesseeeseseseeessneeseeees 8 MA 4 ICI oaea ee ee ee eae eee 8 4 5 Notes on the insulation MEASUFEMENMS cccccccecceeceeeseeceeseeceeceeeseecsesseeseeeseeeeeeeeeeeeeaeees 8 4 6 FIX 250V 500V 1000V 2500V 5000V MOE oc eeeecc cece eeee eee eeeeeeeteeeeeeeseeeeaeeeseeaneeenens 9 4 6 1 Configuration of the test parameters for FIX MOdE cccccccseeeeeceeeeeeeseeeeeesaeeeeseeeeeeeseeeeeeens 12 4 7 ADJUST 100V 5000V MOG 1 ec cccc cece eeee eee eeeeeeeeeeeteeeeeeeaeeeneeeseesueeeeetseetseeteeneenaes 13 4 7 1 Configuration of the test parameters for ADJUST mode cece ceccceeeeeeeeeeeeeeeeeeeeeeeeeeesaaaeeees 16 AO RAMP 6 810 2 ee er ee ere ee eae 17 4 8 1 Configuration of the test parameters for RAMP 1 MOE ccccseecceeeeeeeeeeeeeeeeeneeeeeeeeeeeeeas 21 4 8 2 Configuration of the test parameters for RAMP 2 MOE ccccseeeceeeeeeeeeeeeeeeesaeeeeeeaeeeeeens 22 4 8 3 Configuration of the test parameters for RAMP S MOdE cccccecccseececeeeeeceeeeeseeeeseeeessaeees 23 4 9 Enable Disable Of SMOOTH function ec ccecceeecn sees eeeeeeteeeteeeceeeeeeesseceseeaeeeeeetseeteenees 24 4 10 Anomalous situations in all MOCES ccc ccccc cece ccc eceeeeeeeeeeceeeeeeseeeeeeseeceeeeeeeeaeesseseeeseesees 24 5 MANAGEMENT OF MEMORY DATA
12. Fig 5 Instrument connection i Turn on the instrument by pressing the relevant key 2 Press the FUNC ERASE MEM key to select the ADJUST function 3 The display shows a screen similar to gay that reported here to the side which contains the ADJUST function selected the bar graph set to zero gt the indication TQ the test voltage Can HE iC the value of the test time min sec the plug symbol if the instrument is m supplied from the mains e the battery symbol steadily illuminated or flashing if batteries are flat or are being recharged e the timer symbol if the duration of the test has been preset EN 13 HT 7051 By pressing the arrow pm keys the instrument shows a screen similar to that z reported here to the side ADJUST m 4h which contains the value of the input voltage Sout 5 Make sure that the set test voltage is the desired one Should it not be the case please refer to paragraph 4 7 1 to change it 6 Insert the measuring leads into the relevant input leads of the instrument Rx Rx and GUARD if necessary par 4 4 WARNING A Make sure that there is no voltage at the ends of the measuring points before connecting them to the measuring leads 7 Connect the alligator clips to the part of the system to be tested 8 Press the START STOP key to perform measurement WARNING The display shows the message Measuring which indicate
13. HE MEMORY Press the ESC RECALL MEM key the display shows a screen similar to that reported here to the side which contains e the number of the last memory location used e the value of parameter P EN 26 2 deleted HT 7051 Press the FUNC ERASE MEM key the instrument displays a screen similar to that reported here to the side which shows the word LAST to indicate that the last measure saved will be deleted Press the arrow keys the instrument displays a screen similar to that reported here to the side which shows the word ALL to indicate that all the measures saved will be WARNING A Confirmation of data deletion means the deletion of the last or of all saved data amp xo Confirm deletion by pressing the FUNC ERASE MEM key Or Press the ESC RECALL MEM key to go back to the previous screen without deleting data from the memory 5 3 HOW TO RECALL MEASURES Press the ESC RECALL MEM key the display shows a screen similar to that reported here to the side which contains e the number of the last memory location used e the value of parameter P Press the arrow keys to select the memory location whose content is to be displayed EN 27 iw HT7057 J Press the SET DISPLAY m m i MEM key to display the ees eea measure contained in the selected memory location the display shows a screen similar to that reported here to t
14. The display shows the message no to indicate that there is no limit set When setting the value of voltage VO of time TO of time interval AT of voltage V1 and of the number N of cycles by pressing the MODE CLEAR SMOOTH key the default values are set respectively 100V 15sec 30sec 1000V 1 cycle After setting press the SAVE key to save the changes made or press the ESC RECALL MEM key to exit without saving and return to the previous screen EN 22 N MHTI 4 8 3 Configuration of the test parameters for RAMP 3 mode a HT 7051 By cyclically pressing the SET DISPLAY MEM key it is possible to select the following parameters e minimum value of the insulation resistance MIN in a range between 0 01MQ MAX e maximum value of the insulation resistance MAX in a range between MIN 10TQ e value of the starting voltage VO in a range between 100V 1000V can be set in steps of 25V e value of time TO in which the test voltage VO is applied in a range between OOmin 05sec 99min 59 sec e value of time interval AT in which the test voltage passes from the set value VO to the set value V1 in a range between OOmin 05sec 99min 59 sec e value of the test voltage V1 in a range between 1000V 5000V can be set in steps of 50V e value of time T1 in which the test voltage V1 is applied in a range between OOmin 05sec 99min 59 sec e number N of cycles in which the ramp is repeated in a ra
15. aracteristics of the insulating material is the relationship between the resistance values measured after approximately 60 seconds and 30 seconds D A R After one minute it is already possible to check if the resistance value has increased significantly as is desirable o if it has remained unchanged or worse it has decreased This measuring method as it is based on a relationship between resistances gives a non dimensional result which is therefore independent from the physical dimension of the measured appliance Insulation condition P I D A R C Dangerous OOO O der 107125 141 6 Excellent Above 1 6 Above 4 EN 35
16. bol _ steadily illuminated or flashing if batteries are flat or are being recharged e the timer symbol if the duration of the test has been preset EN 9 HT 7051 By pressing the arrow keys the instrument shows a screen similar to that reported here to the side which contains the value of the input voltage HHH 5 MODE Press the MODE CLEAR SMOOTH key to set one of the following test voltages 250V 500V 1000V 2500V 5000V 6 Insert the measuring leads into the relevant input leads of the instrument Rx Rx and GUARD if necessary par 4 4 WARNING A Make sure that there is no voltage at the ends of the measuring points before connecting them to the measuring leads 7 Connect the alligator clips to the part of the system to be tested Press the START STOP key to perform measurement WARNING The display shows the message Measuring which indicates that the instrument is performing the measurement During this whole phase do not disconnect the measuring leads of the instrument from the conductor being tested the conductor could remain live at a dangerous voltage because of possible stray capacitances in the circuit tested never insert the plug of the supply cable into the Europlug socket 9 During measurement the instrument gives a short acoustic signal every second and the display shows a screen similar to that reported here to the side which contains e the
17. conds Afterwards the instrument returns to the initial screen 6 If there are no data saved in the instruments memory upon pressing the ESC RECALL MEM key the instrument gives a long acoustic signal and displays the screen reported here to the side for 3 seconds Afterwards the instrument returns to the initial screen 7 If there are no memory cells available to save the measurement results upon pressing the SAVE key the instrument gives a long acoustic signal and displays the screen reported here to the side for 3 seconds Afterwards the instrument returns to the initial screen MEM A Pin A 8 The above mentioned anomalous situations cannot be saved EN 25 iw HT7051 5 MANAGEMENT OF MEMORY DATA 5 1 HOW TO SAVE MEASURES After performing a l measurement press the SAVE key the display shows a screen similar to that reported here to the side which contains e the number of the memory location in which the measure will be saved e the last set value for parameter P Should you desire to change the value of parameter P press the arrow keys to set the desired value from 1 to 255 This value helps remembering the location in which the measurement considered has been performed Confirm measure saving by pressing the SAVE key Or Press the ESC RECALL MEM key to go back to the previous screen without saving data in the memory 0 5 2 HOW TO DELETE THE LAST OR ALL THE MEASURES SAVED IN T
18. d of the number N of cycles by pressing the MODE CLEAR SMOOTH key the default values are set respectively 30sec 1000V 1min 1 cycle After setting press the SAVE key to save the changes made or press the ESC RECALL MEM key to exit without saving and return to the previous screen EN 21 N MHTI 4 8 2 Configuration of the test parameters for RAMP 2 mode a HT 7051 By cyclically pressing the SET DISPLAY MEM key it is possible to select the following parameters e minimum value of the insulation resistance MIN in a range between 0 01MQ MAX e maximum value of the insulation resistance MAX in a range between MIN 10TQ e value of the starting voltage VO in a range between 100V 1000V can be set in steps of 25V e value of time TO in which the test voltage VO is applied in a range between OOmin 05sec 99min 59 sec e value of time interval AT in which the test voltage passes from the set value VO to the set value V1 in a range between OOmin 05sec 99min 59 sec e value of the test voltage V1 in a range between 1000V 5000V can be set in steps of 50V e number N of cycles in which the ramp is repeated in a range between 1 255 N 1 indicates 1 only test without repetitions Press the arrow keys to change the value of the parameters a long pressing of the keys allows a rapid change of the values Press the MODE CLEAR SMOOTH key to remove the limit values set for the parameters
19. ded to hold the alligator clip respecting the safety area marked by the hand protection par 4 3 Ah A CAT F 600 INPUT MAX s00 de aw Fig 6 Instrument connection 1 Turn on the instrument by pressing the relevant key EN 17 N MHTI Press the FUNC key to select the RAMP function 3 The display shows a screen similar to gay that reported here to the side which HT 7051 contains RAMP the RAMP type selected Vi the bar graph set to zero 7 CNS the indication TQ the set test voltage f n n ff the value of the test time the plug symbol if the instrument is supplied from the mains the battery symbol steadily illuminated or flashing if batteries are flat or are being recharged the timer symbol if the duration of the test has been preset By pressing the arrow keys the instrument shows a screen similar to that reported here to the side which contains the value of the input voltage Goby 5 Insert the measuring leads into the relevant input leads of the instrument Rx Rx and GUARD if necessary par 4 4 WARNING A Make sure that there is no voltage at the ends of the measuring points before connecting them to the measuring leads 6 Connect the alligator clips to the part of the system to be tested Press the START STOP key to perform measurement WARNING The display shows the message Measuring which indicates that the instrument is p
20. e capacitance shows three hyphens to indicate that it was impossible to measure the capacitance and the symbol EN 15 iw HT7051 WARNING 13 Measures can be saved by pressing the SAVE key twice par 5 1 4 7 1 Configuration of the test parameters for ADJUST mode a By cyclically pressing the SET DISPLAY MEM key it is possible to select the following parameters e minimum value of the insulation resistance MIN in a range between 0 01MQ MAX e maximum value of the insulation resistance MAX in a range between MIN 10TQ e value of the test voltage in a range between 100V 5000V can be set in steps of 25V up to 1000V and in steps of 50V from 1000V to 5000V e test time value in a range between OOmin 05sec 99min 59 sec b DISPLAY Press the arrow keys to change the value of the t parameters a long pressing of the keys allows a rapid ms change of the values C MODE Press the MODE CLEAR SMOOTH key to remove the limit A values set for the parameters The display shows the message no to indicate that there is no limit set Only when setting the value of the test voltage by pressing the MODE CLEAR SMOOTH key the voltage sets to the default value of 1000V d After setting press the SAVE key to save the changes or SY made or press the ESC RECALL MEM key to exit without saving and return to the previous screen EN 16 iw HT7057 4 8 RAMP MODE This function is performed
21. ee enclosed packing list EN 33 iw HT7057 10 SERVICE 10 1 WARRANTY CONDITIONS This instrument is warranted against any material or manufacturing defect in compliance with the general sales conditions During the warranty period defective parts may be replaced However the manufacturer reserves the right to repair or replace the product Should the instrument be returned to the After sales Service or to a Dealer transport will be at the Customer s charge However shipment will be agreed in advance A report will always be enclosed to a shipment stating the reasons for the product s return Only use original packaging for shipment any damage due to the use of non original packaging material will be charged to the Customer The manufacturer declines any responsibility for injury to people or damage to property The warranty shall not apply in the following cases e Repair and or replacement of accessories and battery not covered by warranty e Repairs that may become necessary as a consequence of an incorrect use of the instrument or due to its use together with non compatible appliances e Repairs that may become necessary as a consequence of improper packaging e Repairs which may become necessary as a consequence of interventions performed by unauthorized personnel e Modifications to the instrument performed without the manufacturers explicit authorization e Use not provided for in the instrument s specifications or in
22. en displaying the capacitance shows three hyphens to indicate that it was impossible to measure the capacitance and the warning triangle WARNING 12 Measures can be saved by pressing the SAVE key twice par 5 1 EN 20 N MHTI 4 8 1 Configuration of the test parameters for RAMP 1 mode a HT 7051 By cyclically pressing the SET DISPLAY MEM key it is possible to select the following parameters e minimum value of the insulation resistance MIN in a range between 0 01MQ MAX e maximum value of the insulation resistance MAX in a range between MIN 10TQ e value of time interval AT in which the test voltage passes from OV to the set value V1 e value of the test voltage V1 in a range between 100V 5000V can be set in steps of 25V up to 1000V and in steps of 50V from 1000V to 5000V e value of time T1 in which the test voltage V1 is applied in a range between OOmin 05sec 99min 59 sec e number N of cycles in which the ramp is repeated in a range between 1 255 N 1 indicates 1 only test without repetitions Press the arrow keys to change the value of the parameters a long pressing of the keys allows a rapid change of the values Press the MODE CLEAR SMOOTH key to remove the limit values set for the parameters The display shows the message no to indicate that there is no limit set When setting the value of the time interval AT of the test voltage V1 of time T1 an
23. erforming the measurement During this whole phase do not disconnect the measuring leads of the instrument from the conductor being tested the conductor could remain live at a dangerous voltage because of possible stray capacitances in the circuit tested never insert the plug of the supply cable into the Europlug socket EN 18 iw HT7054 10a During measurement the instrument pm m 1 gives a short acoustic signal every aaaea second and the display shows a screen RAMP i similar to that reported here to the side O A I p which contains uny S e the RAMP function selected e the bar graph proportional to the 247 f measured resistance value e the numerical indication of the A measured resistance e the segment relevant to the current ramp point flashing e the actual test voltage relevant to the current ramp point e the symbol of the alarm bell if the measured value is not within the set limits and or if the value of the test voltage is lower than the set nominal value e the value of the remaining test time relevant to the current ramp point e the plug symbol if the instrument is supplied from the mains e the battery symbol steadily illuminated or flashing if batteries are flat or are being recharged e the timer symbol e the two flash symbols to indicate a dangerous voltage e the message MEASURING While measuring it is also possible to display the leakage current the capacita
24. esistance e the value of the generated voltage e the duration of the test HE pir If the measured resistance value is between the MIN MAX limits previously set the instrument shows OK and gives a double acoustic signal Or Once measurement is complete and 10M any capacitance has been discharged Aansen the instrument shows e the value of the measure insulation resistance e the value of the generated voltage e the duration of the test HY ik d q FIX If the measured resistance value is not between the MIN MAX limits previously set the instrument shows NOT OK the alarm bell and gives a long acoustic signal Once measurement is complete it is also possible to display the leakage current the D A R Dielectric Absorption Ratio the P I Polarization Index and the capacitance which cyclically show when pressing the arrow keys see note on P I and D A R in par 11 1 If the measured resistance value lt 5 0MQ the screen displaying the capacitance shows three hyphens to indicate that it was impossible to measure the capacitance and the symbol EN 11 iw HT7051 WARNING 13 Measures can be saved by pressing the SAVE key twice par 5 1 4 6 1 Configuration of the test parameters for FIX mode a By cyclically pressing the SET DISPLAY MEM key it is possible to select the following parameters e minimum value of the insulation resistance MIN in a range between 0 01MQ MAX
25. gt 2 2 tage S5nA Load capacitance lt 1nF EN 31 9 3 SAFETY STANDARDS Instrument safety Technical documentation Measuring accessory safety Insulation Protection Polluting level Overvoltage category Maximum altitude HT 7051 IEC EN61010 1 IEC EN61557 1 IEC EN61557 2 IEC EN61187 IEC EN61010 031 Class 2 double insulation IP40 open case IP53 closed case according to IEC EN60529 2 CAT IV 600V to earth max 600V between inputs 2000m 6561 ft 9 4 GENERAL CHARACTERISTICS Mechanical characteristics Dimensions Weight Power supply Power Supply Fuse Low battery indication Battery life Auto power off Display Characteristics Memory Characteristics Connection to the PC Serial interface Approximately 360 L x 310 W x 195 H mm 14 2 L x 12 2 W x 7 7 H Approximately 3 5 kg 7 8 b Mains 220 240V 50 60Hz 20VA Battery Type Internal rechargeable NiMH battery T 200mA H 250V Ir 1 5kA The display shows the low battery symbol permanently on amp ___ when the voltage supplied by the batteries is too low While no measurement is being performed insert the power supply cable into the Europlug socket to start recharging the battery With the batteries charging it is possible to perform measurements gt 1000 Test 5kV on 5MQ Test time 5sec delay between 2 test 25sec according IEC EN6155 2 par 6 7 lt activates after 5
26. hanges made to the parameters START STOP key to start and or stop a measurement 4 2 TURNING ON THE INSTRUMENT When turned on the instrument gives a oom 1G 100 ton short acoustic signal and for approximately Giachoesinenbonienedeazeeniagjs one second all segments of the aisplay j u appear BBB an B898 ANoTOKA co Then the instrument shows the firmware version then it sets to the last measuring mode selected before turning off EN 6 iw HT7057 4 2 1 Display description The display is a backlignhted LCD screen which shows three contemporary readings and a series of symbols In detail Display group 1 shows _ e insulation resistance E mnuAF e dielectric leakage current F D A R D D PF an A i MGTOV P I Polarization Index e D A R Dielectric Absorption Ratio e Capacitance Display group 2 shows HAGE e nominal test voltage e generated test voltage Fear e Display group 3 shows the test time min sec Vpoeleenjeee eeejeeejeeejeenjeeej Bar graph RAMP FIXADJUST ATs Test mode FIX ADJUST and RAMP CNS 2 Flash symbol Symbol of values not within limits alarm Warning symbol Battery symbol Power supply from the mains symbol 4 Pop Timer symbol Le Number of test cycles symbol 4 2 2 Auto power off If no test is being carried out the instrument automatically turns off after approximately 5 mi
27. he side 24 L MEM ISPLAY g By pressing the arrow keys it is also possible to cyclically display according to the mode in which the saved measurement was performed the leakage current the D A R Dielectric Absorption Ratio the P I Polarization Index the capacitance and the number N of cycles ES Press the ESC RECALL MEM key to go back to the previous screen and press the ESC RECALL MEM key again to exit memory management 6 RESET OF INSTRUMENT gt Turn on the instrument by pressing the relevant key Ca Press and hold the SET DISPLAY MEM key After approximately 10 seconds the instrument is reset and turns off 7 CONNECTION OF THE INSTRUMENT TO PC The connection between the PC and the instrument is obtained by means of a serial port and the C232NG1 cable supplied with the software pack PI Before connection it is necessary to select the COM port used for transmission by the PC and the correct baud rate 9600 To set these parameters launch the management software and consult the program s help on line WARNING The procedure for transferring saved data to a PC after installing the data management SW can be schematized as follows 1 turn on the instrument and wait for the initial screen to disappear 2 connect the C232NG1 cable to the instrument and to a COM port of the PC 3 launch the data management program on the PC 4 follow the instructions of the software s help on line EN 28
28. hen measuring voltages above 25V in special environments building yards swimming pools etc and 50V in ordinary environments as there is the danger of electric shocks In this manual and on the instrument the following symbols are used For the operator s safety and to prevent damaging the instrument follow the WARNING it is necessary to consult the instruction manual to find the type of potential danger and the actions to be taken Observe the instructions reported in the manual An improper use could damage the instrument and lead to dangerous situations for the operator DC voltage or current AC voltage or current gt Dangerous voltages risk of electric shocks ES Instrument with double insulation 1 1 PRELIMINARY INSTRUCTIONS This instrument has been designed for use in an environment with pollution level 2 t may also be used to test industrial electrical systems up to overvoltage category IV 600V to earth with maximum voltage 600V between inputs Follow the usual safety rules to protect the operator from dangerous currents and protect the instrument against improper use Never use the instrument resting on the floor it must be placed over flat horizontal surfaces Only the accessories supplied with the instrument guarantee safety standards They must be in good conditions and replaced if necessary with identical models Do not measure systems exceeding the current and voltage limit
29. in compliance with standard IEC EN6155 7 2 The RAMP mode allows choosing among three different types of ramps ay A T1 AT AT peh i T1 vo voto N FOU ASEE votos un Ol RAMP 1 RAMP 2 RAMP 3 For each type of ramp it is possible to set the duration the test voltage and the number of times the ramp is repeated par 4 8 1 par 4 8 2 par 4 8 3 RAMP 1 Voltage starts from OV reaches the value V1 in a time interval AT keeps the value V1 for a time T1 and finally returns to O with possible discharge of the residual voltage RAMP 2 Voltage starts from OV which is kept for a time TO reaches the value V1 ina time interval AT and finally returns to O with possible discharge of the residual voltage RAMP 3 Voltage starts from OV which is kept for a time TO reaches the value V1 ina time interval AT keeps to value V1 for a time T1 and finally returns to O with possible discharge of the residual voltage WARNING The instrument may be used on installations of overvoltage category CAT IV 600V to earth with maximum voltage 600V between inputs Do not connect the instrument to installations with voltages exceeding the limit values indicated in this manual If these limit values are exceeded the operator may be exposed to electrical shocks and the instrument could get damaged Always connect the measuring leads to the instrument and to the alligator clips with the accessories disconnected from the system t is recommen
30. ion gt 1 minute the P I Polarization Index if test duration gt 10 minutes which cyclically show when pressing the arrow keys see note on P I and D A R in par 11 1 lf no measuring time was set when setting the parameters or if you want to stop the test in advance before the set time elapses press the START STOP key Once measurement is complete and 10M any capacitance has been discharged Aansen the instrument shows e the value of the measured insulation resistance e the value of the generated voltage e the duration of the test 1247 L If the measured resistance value is between the MIN MAX limits previously set the instrument shows OK and gives a double acoustic signal Or Once measurement is complete and any capacitance has been discharged Veentenn the instrument shows e the value of the measured insulation resistance e the value of the generated voltage e the duration of the test 24 i 4d If the measured resistance value is not between the MIN MAX limits previously set the instrument shows NOT OK the alarm bell and gives a long acoustic signal Once measurement is complete it is also possible to display the leakage current the D A R Dielectric Absorption Ratio the P I Polarization Index and the capacitance which cyclically show when pressing the arrow keys see note on P I and D A R in par 11 1 If the measured resistance value lt 5 0MQ the screen displaying th
31. minutes since the last selection measurement or control received from the PC Backlighted LCD screen with three contemporary readings Group 1 main insulation resistance leakage current PI DAR capacitance Group 2 test voltage nominal and generated Group 3 test time 700 memory locations RS 232 internally optoinsulated 9600bps 8 1 N EN 32 iw HT7054 9 5 ENVIRONMENT 9 4 1 Environmental conditions for use Reference temperature 23 t5 C 73 4 41 0 F Operating temperature 0 40 C 32 0 104 0 F Allowable relative humidity lt 80 Storage temperature 10 60 C 14 0 140 0 F Storage humidity lt 80 9 4 2 EMC This instrument has been designed in compliance with EMC standards and its compatibility has been tested according to IEC EN61326 1 and IEC EN61326 2 2 Classe A compatible Classe B compatible with the following exception don t not use power suppli cable battery charging the instrument could emit electrical noise and create interference where Class A equipment Equipment suitable for use in all establishments other than domestic and those directly connected to a low voltage power supply network which supplies buildings used for domestic Purposes Class B equipment equipment suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes 9 6 ACCESSORIES s
32. nce the number N of the cycle the instrument is performing which cyclically show when pressing the arrow keys MEASURING a If you want to stop the test in advance before the set number N of cycles is reached press the START STOP key Once measurement is complete and jam m 1 any capacitance has been discharged ANLI the instrument shows RAMP e the value of the measured insulation resistance e the value of the actually generated voltage V1 1247 a e the value of the time relevant to parameter T1 If the measured resistance value is between the MIN MAX limits previously set the instrument shows OK and gives a double acoustic signal Or EN 19 iw HT7057 10b Once measurement is complete and lpm m 1 any capacitance has been discharged ees ees the instrument shows RAMP e the value of the measured insulation v4 Ti resistance ETA END ov e the value of the actually generated voltage V1 24 a e the value of the time relevant to parameter T1 If the measured resistance value is not between the MIN MAX limits previously set the instrument shows NOT OK the alarm bell and gives a long acoustic signal Once measurement is complete it is also possible to display the leakage current the capacitance the number N of cycles in which the set ramp was repeated which cyclically show when pressing the arrow keys lf the measured resistance value lt 5 0OMQ the scre
33. nded to use the GUARD lead to measure resistances of some tens of GQ or higher EN 8 iw H7057 4 6 FIX 250V 500V 1000V 2500V 5000V MODE This function is performed in compliance with standard IEC EN6155 7 2 The FIX mode allows a quick selection of the test voltage among the values 250 500 1000 2500 5000VDC WARNING The instrument may be used on installations of overvoltage category CAT IV 600V to earth with maximum voltage 600V between inputs Do not connect the instrument to installations with voltages exceeding the limit values indicated in this manual If these limit values are exceeded the operator may be exposed to electrical shocks and the instrument could get damaged Always connect the measuring leads to the instrument and to the alligator clips with the accessories disconnected from the system It is recommended to hold the alligator clip respecting the safety area marked by the hand protection par 4 3 AK A CAT Y biw INPUT MAX 200 i epee Fig 4 Instrument connection 1 Turn on the instrument by pressing the relevant key 2 Press the FUNC ERASE MEM key to select the FIX function 3 The display shows a screen similar to gay that reported here to the side which contains the FIX function selected the bar graph set to zero the indication TQ the test voltage the value of the test time the plug symbol if the instrument is supplied from the mains e the battery sym
34. nge between 1 255 N 1 indicates 1 only test without repetitions Press the arrow keys to change the value of the parameters a long pressing of the keys allows a rapid change of the values Press the MODE CLEAR SMOOTH key to remove the limit values set for the parameters The display shows the message no to indicate that there is no limit set When setting the value of voltage VO of time TO of time interval AT of voltage V1 of time T1 and of the number N of cycles by pressing the MODE CLEAR SMOOTH key the default values are set respectively 100V 15sec 30sec 1000V 1min 1 cycle After setting press the SAVE key to save the changes made or press the ESC RECALL MEM key to exit without saving and return to the previous screen EN 23 iw H7057 4 9 ENABLE DISABLE OF SMOOTH FUNCTION With the instrument in normal mode no SET of parameters press and a hold the MODE CLEAR SMOOTH key for approximately 3 seconds On 1 sae the display the word SMOOTH appears or disappears if already displayed This feature is suggested with very high capacitance loads presence in order to improve the readings at display 4 10 ANOMALOUS SITUATIONS IN ALL MODES 1 If upon pressing the START STOP key the voltage at input leads Rx Rx is gt allowable limit voltage the instrument gives a long acoustic signal and displays the screen reported here to the side for 3 seconds Afterwards the instrument returns to the initial
35. nutes after the last time a key was pressed To reactivate the instrument it is necessary to turn it on again by pressing the relevant key EN 7 iw HT7054 4 3 DESCRIPTION OF MEASURING LEADS 2 LEGEND Z 1 Hand protection 2 Safety area 2 Fig 2 Measuring leads 4 4 GUARD LEAD In some cases measurements could be affected by surface currents By applying voltage to an insulation to be measured there may be two distinct currents one flowing in the test piece the other flowing on its surface In case you want to measure only the resistance due to current Im flowing in the test piece Rx which is the significant one it is necessary to absorb the surface current If using another lead Fig 3 Currents flowing in the test piece 4 5 NOTES ON THE INSULATION MEASUREMENTS Measuring a high resistance such as the insulation resistance is very difficult as the value of the currents considered may be very low When measuring to prevent making mistakes it is therefore necessary to take the following precautions e keep the measuring leads suspended above the path or anyway make sure the leads do not make contact in more then one point e while measuring high resistances the area around the measuring instrument and the appliance being tested must be free It is recommended to use the timer function so that the operator may keep at due distance from the leads and from the resistance to be tested e itis recomme
36. rinsic uncertainty Reference conditions A Pat5 61 R Position Reference position 90 ETT Path 42 R Supply voltage At the limits stated by the manufacturer E2 Part1 4 2 4 3 R Intrinsic uncertainty Reference conditions or specified or influence quantity operating range Designation code 0 C and 35 C Part 1 4 2 Operating B 2 2 2 A intrinsic uncertainty aed B lt eea B x 100 Fiducial Value T type test 9 2 TECHNICAL SPECIFICATIONS Vdc Range Resolution Uncertainty Protection against overloads 10 600V 2 0 rdg 2 digits CAT IV 600V to earth Vac TRMS Range Resolution Uncertainty _ Protection against overloads 10 600V 2 0 rdg 2 digits CAT IV 600V to earth Resistance measur measurement intrinsic Uncertain 5 lett 7 iis maa 1000 a 7 ie M anoi Ris lt 125 e lt 1 rdg aia Test Voltage 20 rdg 3 digits if Rmis gt SnA ninsi Te indicates also Base accuracy Load Capacitive lt 1nF Outside range indicated by IEC EN61557 Resistance measur measurement Operating Uncertainty _ Test voltage Operating Uncertain can ae 0 TTY ex gt 100V 12 lett 7 E 0 20MQ 199GQ gt 100V Test Volt 0 20MQ 499GQ gt 250V 12 rdg43 digits if Rmis lt ba lt 1 rdg S Load AA lt nF i Outside range indicated by IEC EN61557 Test Voltage SnA 20 rdg 3 digits if Rmis g
37. s that the instrument is performing the measurement During this whole phase do not disconnect the measuring leads of the instrument from the conductor being tested the conductor could remain live at a dangerous voltage because of possible stray capacitances in the circuit tested never insert the plug of the supply cable into the Europlug socket 9 During measurement the instrument 10M gives a short acoustic signal every NT second and the display shows a screen similar to that reported here to the side which contains e the ADJUST function selected e the bar graph proportional to the oe 4 a Ly measured resistance value e the numerical indication of the measured resistance e the actual test voltage e the symbol of the alarm bell if the measured value is not within the set limits and or if the value of the test voltage is lower than the set nominal value e the value of the test time elapsed or remaining if a test has been set e the plug symbol if the instrument is supplied from the mains e the battery symbol steadily illuminated or flashing if batteries are flat or are being recharged e the timer symbol if the duration of the test has been preset EN 14 iw H7057 10 11a 11b e the two flash symbols to indicate a dangerous voltage e the message MEASURING While measuring it is also possible to display the leakage current the D A R Dielectric Absorption Ratio if test durat
38. t EN 30 iw HT7057 Fiducial Value according EN61557 Ranae Fiducial Read Intrinsec Influence Quantity Operating Uncertainty 3e values Uncerainya e a 63 B VJ 2 100 15G 15 336 15 2G 0 13G 1 406 0 For the meanings of the items see 9 1 Measurement of generated voltage Test mode Nominal test voltages FIX 100V 250V 500V 1kV 2 5kV 5kV ADJ USTABLE 100 1000V step 25V 1000 5000V step 50V 0 10 15V 100 1000V step 25V RAMP 1000 5000V step 50V Test voltage compliant with IEC EN 61557 2 Test current Test voltage 100 5000V 1mA lt Test current lt 3mA Automatically controlled test current Test time Setting range 5s 99min 59s Capacitance measurement Range Resolution Loadresistance Testvoltage Vn Uncertainty InF 999nF 1 00uF 5 00uF 0 01uF aS ii InF 999nF lt igi 1 00uF 9 99uF 0 01uF gt vee 10 rdg digits Vn lt 1000V Condensator charge time OV 5000V lt 3s x 1uF Condensator discharge time 5000V gt 25V lt 5s x 1uF Leakage current _ urreni Pssolution Uncertainy __ ea 20 9A Test Volt 100nA 999nA 7 rdg 3 digits Rmis lt 8 1 00uA 9 99uA 0 01uA SnA 10 0UA 9 99uA Test Volt 100uA 999UA 22 rdg33 digits f Rmis gt 1 00mA 2 5mA 0 01mA SnA Uncertainty Test Volt meus l E 5nA 0 01 9 99 Test Volt 20 rdg43 digits if Rmis
39. the dealer Should it become necessary to return the instrument please follow the instructions reported in paragraph 10 3 2 INSTRUMENT POWER SUPPLY The instrument is power supplied through internal batteries which are recharged from the mains by means of a battery charger integrated in the instrument itself The symbol 1 steadily illuminated in the right bottom part indicates that the batteries are flat and must be recharged To recharge the batteries follow the instructions given in paragraph 9 4 The instrument can also be supplied through the mains The display shows the symbol Measurements can be performed even when the batteries are being recharged from the mains 3 3 CALIBRATION The instrument complies with the technical specifications reported in this manual Its correct operation is guaranteed for one year from the date of purchase 3 4 STORAGE In order to guarantee accurate measurements and protect the instrument from possible failures after a long storage period under extreme environmental conditions wait for the instrument to return to a normal condition see the environmental specifications listed in paragraph 9 4 1 EN 4 HT 7051 4 OPERATING INSTRUCTIONS 4 1 INSTRUMENT DESCRIPTION LEGEND Input bushings Europlug socket RS232 connector ON OFF and backlighting key Multifunction arrow keys FUNC ERASE MEM key MODE CLEAR SMOOTH key 8 SET DISPLAY MEM key 9 ESC RECALL MEM key
40. trical equipment for measurement control and laboratory use Part 1 General requirements defines what is intended for measurement category commonly known as overvoltage category In paragraph 6 7 4 Measuring circuits it reads circuits are divided into the following measurement categories e Measurement category IV is for measurements performed at the source of a low voltage installation Examples are electric counters and measurements on primary devices protecting against overcurrents and on ripple adjusting units e Measurement category Ill is for measurements performed on installations inside buildings Examples are measurements performed on distribution boards circuit breakers wiring harnesses including cables bars junction boxes switches sockets of fixed installations and appliances designed for industrial use and other equipment e g Stationary motors connected to fixed systems e Measurement category Il is for measurements performed on circuits directly connected to the low voltage installation Examples are measurements performed on household appliances portable tools and similar equipment e Measurement category is for measurements performed on circuits not directly connected to the MAINS Examples are measurements performed on circuits not derived from the MAINS and on circuits derived from the MAINS provided with a special internal protection In this latter case the stress caused by the transients is variable
41. values specified Do not perform measurements in environmental conditions not within the limit values indicated in this manual Before connecting the probes to the circuit to be tested check that the correct function is selected iw HT7054 1 2 DURING USE Carefully read the following recommendations and instructions WARNING Failure to observe the warnings and or instructions may damage the i instrument and or its components or generate a danger for the operator If during use the low battery symbol appears on the display insert the supply cable into the Europlug socket to start battery recharge During battery recharge it is possible to perform measurements Before selecting a new function disconnect the measuring probes from the circuit When the instrument is connected to the circuit being tested never touch any unused lead Avoid measuring resistance with external voltages even if the instrument is protected as an excess voltage may cause instrument malfunctions Prevent that the instrument receives voltage during measurement e g a probe slipping from the measuring point and touching a point under voltage Avoid inserting the plug of the supply cable into the Europlug socket while measuring 1 3 AFTER USE When measurements are completed turn off the instrument by pressing the ON OFF key 1 4 DEFINITION OF MEASUREMENT OVERVOLTAGE CATEGORY Standard CEI 61010 1 Safety requirements for elec
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