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NOVA AND NOVA PRO

Measurements

Follow the connection diagram shown in figures 5.48 to perform the

Earth

Resistance

measurement with 3 wires (ES connected to E).

Figure 5-48: 3 wire connection diagram

Step 4

Check for any warnings and the online voltage/terminal monitor on the display before
starting the measurement. If everything is ok and the

is shown, press the TEST

key.
After performing the measurement, the results appear on the display together with

the

indication (if applicable).

Figure 5-49: Example of resistance to earth measurement results

Displayed result:

Re……

resistance to earth.

Rs ..............

Resistance of S (potential) probe

Rh… ...........

Resistance of H (current) probe

Notes:

❑

If a voltage of higher than 10 V exists between test terminals, the Earth
Resistance measurement will not be performed.

Содержание NOVA

Страница 1: ...Manual for installation tester NOVA and NOVA PRO...

Страница 2: ...CT ON www uniks it The registration of your products will allow you to stay informed about news take advantage of advantageous discounts dedicated to you for the purchase of accessories and products f...

Страница 3: ...terminal monitor 14 4 3 Message field battery status 14 4 4 Status field measurement warnings results symbols 15 4 5 Sound warnings 15 4 6 Performing measurement 16 4 6 1 Measurement function sub func...

Страница 4: ...cific earth resistance Ro only NOVA PRO 49 6 Maintenance 51 6 1 Replacing fuses 51 6 2 Cleaning 51 6 3 Periodic calibration 51 6 4 Service 51 7 Technical specifications 53 7 1 Insulation resistance 53...

Страница 5: ...nal memory and through THE USB port will allow you to create REPORTS of the measurements in Excel form then customizable by the user NOVA Tool Standard accessories 3 pcs PVC test cables 1 m 1 pcs Schu...

Страница 6: ...eneral warnings The symbol means Mark on your equipment certifies that it meets requirements of all subjected EU regulations The symbol means This equipment should be recycled as electronic waste The...

Страница 7: ...ply adapter is connected otherwise they may explode Hazardous voltages exist inside the instrument Disconnect all test leads remove the power supply cable and switch off the instrument before removing...

Страница 8: ...act voltage does not normally trip an RCD However the trip limit of the RCD may be exceeded as a result of leakage current flowing to the PE protective conductor or a capacitive connection between L a...

Страница 9: ...tection circuits control the charging procedure and assure maximum battery lifetime The power supply socket polarity is shown in figure 2 1 Note Figure 2 1 Power supply socket polarity Use only power...

Страница 10: ...ufactured and tested in accordance with the following regulations Electromagnetic compatibility EMC EN 61326 Electrical equipment for measurement control and laboratory use EMC requirements Class B Ha...

Страница 11: ...ight button 3 lighting levels 3 Settings key 4 Exit Back Return button 5 Memory key 6 ZERO button to reset the resistance of the cables during the continuity measurement 7 Help button to view the conn...

Страница 12: ...m allowed voltage between test terminals and ground is 600V Maximal allowed voltage between test terminals is 550 V 2 Socket for probe with Test push button 3 Protection cover 3 3 Back panel Figure 3...

Страница 13: ...NOVA AND NOVA PRO Instrument description 11 1 2 3 4 5 Figure 3 4 Battery and fuse compartment Legend 1Fuse F3 2Fuse F2 3Fuse F1 4Battery cells size AA 5Battery contacts...

Страница 14: ...e neck strap supplied in standard set allows the instrument to be carried in a variety of different ways The operator can choose the most appropriate method based on the tasks they are performing The...

Страница 15: ...e 4 1 Display outlook Legend 1 Function line 2 Result field In this field the main result and sub results are displayed 3 Status field PASS FAIL ABORT START WAIT WARNINGS status are displayed 4 Online...

Страница 16: ...terminals are used for selected measurement Online voltages are displayed together with test terminal indication L and N test terminals are used for selected measurement 4 3 Message field battery stat...

Страница 17: ...continued sound during continuity test when result is 35 Ohm upwards sound attention dangerous voltage applied Short sound power off end of measurement downwards sound warnings temperature voltage at...

Страница 18: ...By using keys the value for the selected parameter can be set Once the measurement parameters are set the settings are retained until new changes are made 4 6 3 Performing tests When symbol is displa...

Страница 19: ...op automatically Supply system Select supply network system e g TN or IT Device info Shows info about device e g Firmware version 4 7 Help screen The Help screens contain diagrams that show the correc...

Страница 20: ...ductive antistatic floors How to perform an insulation resistance measurement Step 1 Select Insulation function with the function selector FCT key The following menu is displayed Figure 5 1 Insulation...

Страница 21: ...ent or before it is fully discharged Risk of electric shock In order to prevent damaging the test instrument do not connect test terminals to an external voltage higher than 550 V AC or DC 5 2 Continu...

Страница 22: ...asurement menu Step 2 Set the following limit value Limit limit resistance value using the and navigation keys Step 3 Connect test cable to the NOVA instrument Before performing an R Low resistance me...

Страница 23: ...y before starting the measurement If everything is ok and the is shown press the TEST key After performing the measurement the results appear on the display together with the or indication if applicab...

Страница 24: ...test inductive components such as motors and coiled cables How to perform low current continuity measurement Step 1 Select the Continuity function with the FCT key and select the Cont mode with the a...

Страница 25: ...inuity resistance result I Current used in the measurement Warning Low current continuity measurement should only be performed on de energized objects Notes If a voltage of higher than 10 V exists bet...

Страница 26: ...rent Selected nominal differential current can be multiplied by 1 2 or 5 5 3 4 RCD type and test current starting polarity The NOVA instrument enables testing of general non delayed and selective time...

Страница 27: ...voltage relates to the rated nominal differential current of the RCD and is multiplied by a safety factor See the table 5 1 for detailed contact voltage calculation RCD type Contact voltage Uc G G Uc...

Страница 28: ...igure 5 14 Example of contact voltage measurement results Displayed results Uc Contact voltage Rl Fault loop resistance Limit Limit earth fault loop resistance value according to BS 7671 Notes Paramet...

Страница 29: ...s Trip out times according to BS 7671 I N I N 2 I N 5 I N General non delayed RCDs t 1999 ms t 300 ms t 150 ms t 40 ms Selective time delayed RCDs t 1999 ms 130 ms t 500 ms 60 ms t 200 ms 50 ms t 150...

Страница 30: ...e measurement will be performed only if the contact voltage at nominal differential current is lower than the limit set in the contact voltage setting The measurement of the contact voltage in pre tes...

Страница 31: ...iagram shown in figure 5 15 see the chapter 5 3 6 Contact voltage to perform trip out current measurements Step 4 Check for any warnings and check the online voltage terminal monitor on the display be...

Страница 32: ...ents with one press of a button If a faulty parameter is noticed during the autotest the test will stop to highlight the need for further investigation Notes Themeasurement ofcontactvoltageinthepre te...

Страница 33: ...rement normally trips an RCD within allowed time period The following menu is displayed Figure 5 20 Step 1 RCD autotest results After re activating the RCD the autotest sequence automatically proceeds...

Страница 34: ...h step 4 4 Trip out time measurement with the following measurement parameters Test current of 5 I N Test current started with the negative half wave at 1800 Measurement normally trips an RCD within a...

Страница 35: ...est current started with the negative half wave at 1800 Measurement does not normally trip an RCD The following menu is displayed Figure 5 25 Step 6 RCD autotest results 7 Ramp test measurement with t...

Страница 36: ...ment is continuously increased until the RCD trips The following menu is displayed Figure 5 27 Step 8 RCD autotest results Displayed results x1 left Step 1 trip out time result t3 I N 00 x1 right Step...

Страница 37: ...le extension of the operating time Examples of such equipment might be connected capacitors or running motors 5 4 Z LOOP Fault loop impedance and prospective fault current The loop impedance function...

Страница 38: ...gure 5 28 Loop impedance measurement menu Step 2 Connect the test leads to the instrument and follow the connection diagram shown in the figure 5 29 to perform fault loop impedance measurement Figure...

Страница 39: ...surement trips RCD protected circuits 5 4 2 The fault loop impedance test RCD for RCD protected circuits The fault loop impedance is measured with a low test current to avoid tripping the RCD This fun...

Страница 40: ...pedance Rs function menu Step 2 Connect the appropriate test leads to the instrument and follow the connection diagram shown in figure 5 13 to perform RCD trip lock measurement see chapter 5 3 6 Conta...

Страница 41: ...nt otherwise the symbol of NOISE DURING MEASUREMENT will be displayed 5 5 Z LINE Line impedance and prospective short circuit current The line impedance is a measurement of the impedance of the curren...

Страница 42: ...2 Connect the appropriate test leads to the instrument and follow the connection diagram shown in figure 5 36 to perform phase neutral or phase phase line impedance measurement Figure 5 356 Line impe...

Страница 43: ...result is compared to a reference result which has been taken before on some other point of the installation usually the entry point since this point has the lowest impedance The voltage drop in the...

Страница 44: ...tage terminal monitor before starting the measurement If everything is ok and the is shown press the TEST key After performing the measurement the result for Zref will appear on the display Step 4 Con...

Страница 45: ...t point compared to the reference point Zref Line impedance of the reference point Z Line impedance of the test point ISC Prospective short circuit current of the test point The specified accuracy of...

Страница 46: ...the VOLTAGE function with the function selector FCT key The following menu is displayed Figure 5 40 Phase rotation test menu Step 2 Connect test cable to the NOVA instrument and follow the connection...

Страница 47: ...while dealing with electric installations carrying out different measurements and tests looking for fault locations etc Frequency is measured for example when establishing the source of mains voltage...

Страница 48: ...luctuations as they occur these results are shown on the display during measurement Figure 5 405 Examples of voltage and frequency measurements Displayed results U L N Voltage between phase and neutra...

Страница 49: ...the Earth Resistance function with the function selector FCT key and select the Re mode with the and navigation keys The following menu will be displayed Figure 5 416 Earth Resistance Re measurement m...

Страница 50: ...starting the measurement If everything is ok and the is shown press the TEST key After performing the measurement the results appear on the display together with the or indication if applicable Figur...

Страница 51: ...to perform Specific Earth Resistance measurement Step 1 Select the Earth Resistance function with the function selector FCT key and select the Ro mode with the and navigation keys The following menu w...

Страница 52: ...performing the measurement the results appear on the display together with the or indication if applicable Figure 5 52 Example of specific earth resistance measurement results Displayed result Ro spec...

Страница 53: ...4 in chapter 3 3 Back panel 6 2 Cleaning No special maintenance is required for the housing To clean the surface of the instrument use a soft cloth slightly moistened with soapy water or alcohol Then...

Страница 54: ...Accuracy 0 1 199 9 0 100 1 999 0 001 2 00 99 99 0 01 100 0 199 9 0 1 2 of reading 3 digits 200 999 200 999 1 10 of reading Voltage Measuring range V Resolution V Accuracy 0 1200 1 3 of reading 3 digi...

Страница 55: ...0 1 I 0 I I N Test current shape Sine wave AC DC B pulsed A RCD type general G non delayed selective S time delayed Test current starting polarity 00 or 1800 Voltage range 93V 134V 185V 266V 45Hz 65Hz...

Страница 56: ...cy 0 0 500 0 0 1 3 ms Test current I N I N 2 I N 5 I N Multipliers not available see test current selection table 7 3 4 Trip out current Measurement range corresponds to EN61557 6 for I N 10mA Specifi...

Страница 57: ...est current at 230 V 3 4 A 50Hz Sine wave 10 ms tLOAD 15 ms Nominal voltage range 93 V 134 V 185 V 266 V 45 Hz 65 Hz Zloop L PE RCD and Rs Ipfc non trip subfunction Measuring range according to EN6155...

Страница 58: ...0 999 1 1 00k 9 99k 10 10 0 100 0 100 Test current at 230 V 3 4 A 50Hz Sine wave 10 ms tLOAD 15 ms Nominal voltage range 93V 134V 185V 266V 321V 485V 45Hz 65Hz Voltage drop Measuring range Resolution...

Страница 59: ...uit current 30 mA Test voltage frequency 126 9 Hz Test voltage shape sine wave Automatic measurement of auxiliary electrode resistance and probe resistance Ro Specific earth resistance only NOVA PRO M...

Страница 60: ...2 Protection degree P 42 Display 480X320 TFT LCD COM Port USB Dimensions w h d 25 cm 10 7 cm 13 5 cm Weight without battery 1 30 kg Reference conditions Reference temperature range 10 OC 30 OC Refere...

Страница 61: ...ameters 8 1 Overview NOVA instrument can store up to 1000 measurements the list of records can be stepped through a single record or all records can be deleted the IDs for customer location and object...

Страница 62: ...layed on the screen Figure 8 3 Last results Step 2 Press the MEM key The following is displayed Figure 8 4 Figure 8 4 Save results Next record number in red letters Current date day month year Time ho...

Страница 63: ...the record screen without changing the IDs Press TEST to save the IDs in the actual record These IDs will also be used for the following new records Step 4 To store the result of last measurement pres...

Страница 64: ...Exit Back Return key to return to last measurement screen or the navigation keys to see a record from the list 8 3 Recalling results Step 1 To enter the Memory screen press the MEM key When no measure...

Страница 65: ...WN key to enter the record list Step 2 Press the UP or DOWN key to find the record that has to be deleted Step 3 Press the RIGHT key the following screen will be displayed Figure 8 8 Figure 8 8 delete...

Страница 66: ...oftware Downloading stored records from MFT to PC is done using MFT Records application Records are stored on PC in form of csv file Also records can be exported to Excel spreadsheet xlsx for quick ge...

Страница 67: ...e USB driver is installed automatically on a free COM port and confirmation that new hardware can be used follows Given COM port number can be viewed by means of the Device Manager of your system Step...

Страница 68: ...NOVA and NOVA PRO USB communication 67 Step 4 Click on Scan Ports Figure 9 5 Figure 9 5 Scanning Ports Step 5 Select appropriate port and click Open Port Figure 9 6 Figure 9 6 Opening Port...

Страница 69: ...ded csv file is automatically created Figure 9 7 Downloading records Step 7 Click Excel button to export all records to Excel file Figure 9 8 An example excel file is displayed also Figure 9 9 Default...

Страница 70: ...NOVA and NOVA PRO USB communication 69 Figure 9 8 Generated Excel file example...

Страница 71: ...NOVA and NOVA PRO USB communication 70...

Страница 72: ...NOVA and NOVA PRO USB communication 71 Rev U052021 Uniks S r l Via Vittori 57 408018 Faenza RA Italy http www uniks it info uniks it http www uniks it info uniks it...

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