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Uniks NOVA Manual For Installation

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Manual for installation tester NOVA and
NOVA PRO

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  • Page 1 Manual for installation tester NOVA and NOVA PRO...
  • Page 2 NOVA and NOVA PRO REGISTER YOUR PRODUCT 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 for your daily work.

  • Page 3: Table Of Contents

    NOVA and NOVA PRO Sommario Preface ....................................4 Safety and operational considerations ..........................5 2.1. Warnings and notes ................................5 2.2. Batteries .................................... 7 2.3. Charging .................................... 7 2.4. Precautions on charging of new battery cells or cells unused for a longer period ............7 2.5.
  • Page 4 Voltage and frequency ..............................45 Re Earth Resistance (Only NOVA PRO) ..........................47 5.8.1. Earth Resistance (Re) - 3-wire, 4wire ......................... 47 5.8.2. Specific earth resistance (Ro only NOVA PRO) ....................49 Maintenance ..................................51 6.1. Replacing fuses ................................51 6.2.

  • Page 5: Preface

    The Nova series allows you to save all the measurements in the internal memory and through THE USB port will allow you to create REPORTS of the measurements in Excel form then customizable by the user.

  • Page 6: Safety And Operational Considerations

    2.1. Warnings and notes In order to maintain the highest level of operator safety while carrying out various tests and measurements, UNIKS SRL recommends keeping your NOVA AND NOVA PRO instruments in best possible condition and undamaged.When using the instrument, consider the following general warnings: symbol means »Mark on your equipment certifies that it meets...
  • Page 7 NOVA AND NOVA PRO Safety and operational considerations Read this user manual carefully, otherwise the use of the instrument may be ❑ dangerous for the operator, the instrument or for the equipment under test! Stop using the instrument or any of the accessories if any damage is ❑...
  • Page 8 NOVA AND NOVA PRO Safety and operational considerations Notes related to measurement functions General The ! indicator means that the selected measurement cannot be performed ❑ because of irregular conditions on input terminals. Insulation resistance, continuity functions and earth resistance measurements can ❑...

  • Page 9: Batteries

    NOVA AND NOVA PRO Safety and operational considerations 2.2. Batteries When connected to an installation, the instruments battery compartment can contain hazardous voltage inside! When replacing battery cells or before opening the battery/fuse compartment cover, disconnect any measuring accessory connected to the...

  • Page 10: Standards Applied

    This information is normally provided in the technical specification from battery manufacturer. 2.5. Standards applied The NOVA and NOVA PRO instrument is manufactured and tested in accordance with the following regulations: Electromagnetic compatibility (EMC)

  • Page 11: Instrument Description

    NOVA AND NOVA PRO Instrument description Instrument description 3.1. Front panel Figure 3.1: Front panel Legend: 1 – Measure selector FCT 2 - Backlight button (3 lighting levels) 3 - Settings key 4 - Exit/Back/Return button 5 - Memory key...

  • Page 12: Connector Panel

    NOVA AND NOVA PRO Instrument description 3.2. Connector panel Figure 3.2: Connector panel Legend: 1 - Test connector. Warning! Maximum 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.
  • Page 13 NOVA AND NOVA PRO Instrument description Figure 3.4.: Battery and fuse compartment Legend: Fuse F3. Fuse F2. Fuse F1. Battery cells (size AA). Battery contacts.

  • Page 14: Bottom View - Information Label

    NOVA AND NOVA PRO Instrument description 3.4. Bottom view – Information label Figure 3.5: Bottom panel information label 3.5. Carrying the instrument The 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.

  • Page 15: Instrument Operation

    NOVA AND NOVA PRO Instrument operation Instrument operation 4.1. Meaning of symbols and messages on the Instrument display The instrument display is divided into several sections: Figure 4.1: Display outlook Legend: 1 - Function line. 2 - Result field. In this field the main result and sub-results are displayed.

  • Page 16: The Online Voltage And Output Terminal Monitor

    NOVA AND NOVA PRO Instrument operation 4.2. The online voltage and output terminal monitor Online voltages are displayed together with test terminal indication. All three test terminals are used for selected measurement. Online voltages are displayed together with test terminal indication.

  • Page 17: Status Field - Measurement Warnings/Results Symbols

    NOVA AND NOVA PRO Instrument operation 4.4. Status field – measurement warnings/results symbols Figure 4-1 List of status symbols 4.5. Sound warnings Short high sound button pressed continued sound during continuity test when result is <35 Ohm upwards sound attention, dangerous voltage applied...

  • Page 18: Performing Measurement

    NOVA AND NOVA PRO Instrument operation 4.6. Performing measurement 4.6.1. Measurement function/sub-function NOVA and NOVA PRO: V-Hz- (Voltage/Frequency/Phase Direction Measurement) ❑ R Low (continuity with 200mA) / Continuity (with 7mA) ❑ M (insulation resistance) ❑ Z LINE (Line Impedance) / V% (Voltage Drop on line) ❑...

  • Page 19: Help Screen

    NOVA AND NOVA PRO Instrument operation Power off time: ❑ Select time when device should switch off if not used. Cont timeout: ❑ Select time-out when measurement should stop automatically. ISO timeout: ❑ Select time-out when measurement should stop automatically.

  • Page 20: Measurements

    ❑ Step 3 Ensure that no voltages are present on the item for testing. Connect the test leads to the NOVA instrument. Connect the test cables to the item under test. (see figure 5.2) to perform insulation resistance measurement. Figure 5-2: Connection of universal test cable...

  • Page 21: Continuity

    NOVA AND NOVA PRO Measurements Step 4 Check the displayed warnings and online voltage/terminal monitor before starting the measurement. If is displayed, press the TEST key. After the test is done, measured results are displayed, together with the e indication (if applicable).
  • Page 22 Limit: limit resistance value using the ▲▼ and ◀▶navigation keys. ❑ Step 3 Connect test cable to the NOVA instrument. Before performing an R Low resistance measurement, compensate for the test leads resistance as follows: Short test leads first as shown in figure 5.5.
  • Page 23 NOVA AND NOVA PRO Measurements Step 4 Ensure that the item for testing is disconnected from any voltage source and it has been fully discharged. Connect the test cables to the item under test. Follow the connection diagrams shown in figures 5.6 and 5.7 to perform a R Low resistance measurement.

  • Page 24: Continuity Test

    NOVA AND NOVA PRO Measurements Note: If voltage between test terminals is higher than 10 V the R Low measurement will not ❑ be performed. 5.2.2. Continuity test Continuous low-value resistance measurements can be performed without pole reversal of the test voltages and a lower test current (a few mA).

  • Page 25: Testing Rcds

    NOVA AND NOVA PRO Measurements Step 4 Check the warnings and online voltage/terminal monitor on the display before starting the measurement. If everything is OK and the is shown, press the TEST key to start the measurement. The actual measuring result with indication (if applicable) will be displayed during the measurement.

  • Page 26: Limit Contact Voltage

    10 mA, 30 mA, 100 mA, 300 mA, 500 mA , 650 mA, 1000 mA and EV tests with 6mA (electric vehicle charging stations). The Nova e Nova Pro is compatible with the EV CHECK accessory for testing electric charging stations or other (6mA DC type B installed differentials).

  • Page 27: Contact Voltage

    NOVA AND NOVA PRO Measurements Contact voltage 5.3.6. Leakage current flowing to the PE terminal causes a voltage drop across earth resistance, which is called contact voltage (Uc). This voltage is present on all accessible parts connected to the PE terminal and should be lower than the safety limit voltage.
  • Page 28 NOVA AND NOVA PRO Measurements Step 3 Connect the test leads to the instrument and follow the connection diagram shown in figure 5.15 to perform contact voltage measurement. Figure 5-13: Connection of plug test cable or universal test cable Step 4 Check for any warnings and check the online voltage/terminal monitor on the display before starting the measurement.

  • Page 29: Trip-Out Time

    NOVA AND NOVA PRO Measurements 5.3.7. Trip-out time Trip-out time measurement is used to verify the effectiveness of an RCD. This is achieved by a test simulating an appropriate fault condition. Trip-out times vary between standards and are listed below.

  • Page 30: Trip-Out Current

    NOVA AND NOVA PRO Measurements Step 3 Connect the leads to the instrument and follow the connection diagram shown in figure 5.15 (see the chapter 5.3.6 Contact voltage) to perform trip-out time measurement. Step 4 Check for any warnings and check the online voltage/terminal monitor on the display before starting the measurement.
  • Page 31 NOVA AND NOVA PRO Measurements Figure 5-17: Trip-out current measurement menu Step 2 By using cursor keys the following parameters can be set in this measurement: • : Nominal residual current, ΔN • Type: RCD type, • Pol.: Test current starting polarity.

  • Page 32: Autotest

    NOVA AND NOVA PRO Measurements Notes: Parameters set in this function are also kept for other RCD functions! ❑ RCD trip-out current measurement will be performed only if the contact voltage at ❑ nominal differential current is lower than set limit contact voltage! The measurement of contact voltage in the pre-test does not normally trip an RCD.
  • Page 33 NOVA AND NOVA PRO Measurements Step 4 Check for any warnings and check the online voltage/terminal monit on the display before starting the measurement. If everything is ok and the is shown, press the TEST key. The autotest sequence will then start to run as follows: Trip-out time measurement with the following measurement parameters: •...
  • Page 34 NOVA AND NOVA PRO Measurements • Test current of 5 I ΔN • Test current started with the positive half-wave at 0 Measurement normally trips an RCD within allowed time period. The following menu is displayed: Figure 5-22: Step 3 RCD autotest results After re-activating the RCD the autotest sequence automatically proceeds with step 4.
  • Page 35 NOVA AND NOVA PRO Measurements Measurement does not normally trip an RCD. The following menu is displayed: Figure 5-24: Step 5 RCD autotest results After performing step 5 the RCD autotest sequence automatically proceeds with step 6. Trip-out time measurement with the following measurement parameters: •...
  • Page 36 NOVA AND NOVA PRO Measurements Figure 5-26: Step 7 RCD autotest results Ramp test measurement with the following measurement parameters: • Test current started with the negative half-wave at 180 This measurement determine the minimum current required to trip the RCD.

  • Page 37: Z Loop Fault Loop Impedance And Prospective Fault Current

    NOVA AND NOVA PRO Measurements Note: the x1 Auto tests will be automatically skipped for RCD type B with rated residual ❑ currents of I = 1000 mA ΔN the x5 Auto tests will be automatically skipped in the following cases: ❑...
  • Page 38 NOVA AND NOVA PRO Measurements How to perform fault loop impedance measurement Step 1 Select the LOOP function with the function selector FCT key and select the LOOP mode with the ▲▼ and ◀▶navigation keys. Then select desired Type, Time and Curr option values with the ▲▼...

  • Page 39: The Fault Loop Impedance Test Rcd (For Rcd Protected Circuits)

    NOVA AND NOVA PRO Measurements Figure 5-30: Example of loop impedance measurement results Displayed results: Z ....Fault loop impedance, Prospective fault current (displayed in amps), SC..... Notes: The specified accuracy of test parameters is valid only if mains voltage is stable during ❑...
  • Page 40 NOVA AND NOVA PRO Measurements How to perform Rs trip-lock measurement Step 1 Select the LOOP function with the function selector FCT key and select the Rs mode with the ▲▼ and ◀▶navigation keys. Then select desired current, Limit and scaling factor option values with the ▲▼ and ◀▶navigation keys. The...

  • Page 41: Z Line Line Impedance And Prospective Short-Circuit Current

    NOVA AND NOVA PRO Measurements Displayed result: Notes: Z ....Fault loop impedance, Prospective fault current, SC..... The measurement of fault loop impedance using trip-lock function does not normally ❑ trip an RCD. However, if the trip limit may be exceeded as a result of leakage current flowing through the PE protective conductor or a capacitive connection between L and PE conductors.
  • Page 42 NOVA AND NOVA PRO Measurements Step 1 Select the LINE IMPEDANCE function with the function selector FCT key. Then select desired Type, Time and Curr option values with the ▲▼ and ◀▶navigation keys. The following menu is displayed: Figure 5-35: Line impedance measurement menu...

  • Page 43: V% Voltage Drop Test

    NOVA AND NOVA PRO Measurements Figure 5-367: Example of line impedance measurement results Displayed results: Z ....Line impedance, Prospective short-circuit current, SC..... Notes: The specified accuracy of the test parameter is valid only if mains voltage is stable ❑ during the measurement.
  • Page 44 NOVA AND NOVA PRO Measurements Figure 5-378: Voltage drop measurement menu Step 2 Connect the appropriate test leads from the reference point to the instrument and follow the connection diagram shown in figure 5.36 to perform phase-neutral or phase- phase line impedance measurement.
  • Page 45 NOVA AND NOVA PRO Measurements Displayed results: ∆U ....voltage drop of the test point compared to the reference point Zref ..Line impedance of the reference point Z ....Line impedance of the test point Prospective short-circuit current of the test point SC.....

  • Page 46: Phase Sequence Testing

    Figure 5-40: Phase rotation test menu Step 2 Connect test cable to the NOVA instrument and follow the connection diagram shown in figure 5.41 to test phase sequence. Figure 5-41: Connection of universal test cable and optional three phase cable Step 3 Check for warnings on the display and check the online voltage/terminal monitor.

  • Page 47: Voltage And Frequency

    NOVA AND NOVA PRO Measurements Figure 5-42: Example of phase sequence test result Displayed results: Freq ....Frequency, Rotation... Phase sequence, -.- ....Irregular rotation value. 5.7 Voltage and frequency Voltage measurements should be carried out regularly while dealing with electric installations (carrying out different measurements and tests, looking for fault locations, etc.).
  • Page 48 NOVA AND NOVA PRO Measurements Step 2 Connect test cable to the NOVA instrument and follow the connection diagram shown in figure 5.44 to perform a voltage and frequency measurement. Figure 5-394: Connection diagram Step 3 Check the displayed warnings. The Voltage and Frequency test continually runs, showing fluctuations as they occur, these results are shown on the display during measurement.

  • Page 49: Re Earth Resistance (Only Nova Pro)

    Measurements 5.8 Re Earth Resistance (Only NOVA PRO) 5.8.1. Earth Resistance (Re) 3-wire, 4wire NOVA allows resistance to earth measurement using 3-wire and 4wire measuring method. How to perform Earth Resistance measurement Step 1 Select the Earth Resistance function with the function selector FCT key and select the Re mode with the ▲▼...
  • Page 50 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.

  • Page 51: Specific Earth Resistance (Ro Only Nova Pro)

    NOVA AND NOVA PRO Measurements 5.8.2. Specific earth resistance (Ro only NOVA PRO) It is advisable to measure Earth Resistivity, when defining parameters of earthing system (required length and surface of earth electrodes, most appropriate depth of installing earthing system etc.) in order to reach more accurate calculations.
  • Page 52 NOVA AND NOVA PRO Measurements 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 indication (if applicable).

  • Page 53: Maintenance

    For repairs under warranty, or at any other time, please contact your distributor. Unauthorized person(s) are not allowed to open the NOVA instrument. There are no user replaceable components inside the instrument, except for the three fuses inside the battery compartment,...

  • Page 54: Technical Specifications

    NOVA and NOVA PRO Technical specifications Technical specifications Insulation resistance Insulation resistance (nominal voltages 50V Measurement range according to 61557 from 50kΩ-80MΩ Measuring range (MΩ) Resolution (MΩ) Accuracy 0.1  80.0 (5 % of reading + (0.100 ... 1.999) 0.001 (2.00 ...

  • Page 55: Rcd Testing

    NOVA and NOVA PRO Technical specifications Open-circuit voltage ......5 V Measuring current ....... min. 200 mA into load resistance of 2 Ω Test lead compensation ....... up to 5 Ω The number of possible tests with a new set of batteries ....up to 1400 (with 2300mAh battery cells) Automatic polarity reversal of the test voltage.
  • Page 56 NOVA and NOVA PRO Technical specifications Measuring range (V) Resolution (V) Accuracy 3.0  9.9 (-0%/+10%) of reading + 5 digits (-0%/+10%) of reading + 5 10.0 99.9 digits Test current ......... max. 0.5I ΔN Limit contact voltage......... 25 V, 50 V Fault loop resistance at contact voltage is calculated as R = Δ...

  • Page 57: Fault Loop Impedance And Prospective Fault Current

    NOVA and NOVA PRO Technical specifications Fault loop impedance and prospective fault current Zloop L-PE, I sub-function Measuring range according to EN61557-3 is 0.25 Ω  1999 Ω. Ω Ω Measuring range ( Resolution ( Accuracy 0.2  9999 (5 % of reading + 5 digits) (0.20 ...

  • Page 58: Line Impedance And Prospective Short-Circuit Current

    NOVA and NOVA PRO Technical specifications Line impedance and prospective short-circuit current Line impedance Measuring range according to EN61557-3 is 0.25Ω  1999Ω. Zline L-L, L-N, I psc subfunction Ω Ω Accuracy Measuring range ( Resolution ( 0.2  9999 (5 % of reading + 5 digits)

  • Page 59: Earth Resistance (Only Nova Pro)

    Short circuit 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) Measuring range Ωm Accuracy Resolution ( 6.0 Ωm …...

  • Page 60: General Data

    NOVA and NOVA PRO Technical specifications General data Power supply voltage ......9 V (61.5 V battery cells, size AA) Power supply adapter ......12 V DC / 1000 mA Battery charging current ...... < 600 mA (internally regulated) Voltage of charged batteries ....9 V (61.5 V, at fully charged state)

  • Page 61: Storing Measurements

    After the measurement is completed, results can be stored in internal memory of the instrument together with the sub-results and function parameters. 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...

  • Page 62: Saving Results

    NOVA and NOVA PRO Storing measurements 8.2. Saving results Step 1 When the measurement is finished (Figure 8.3) results are displayed 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...
  • Page 63 NOVA and NOVA PRO Storing measurements Step 3 To change customer ID, location ID or object ID, press the LEFT key. The following screen will be displayed (Figure 8.5). Figure 8.5: ID editor Use the ▲▼ navigation keys to choose the ID type and the ◀▶navigation keys to change the value of the ID.

  • Page 64: Recalling Results

    NOVA and NOVA PRO Storing measurements In addition the blue function bar contains a colored field that shows the overall result of the measurement: Green: measured and passed Red: measured but failed Brown: measured but not judged Figure 8.7: failed result To cancel the saving of the record press MEM or Exit/Back/Return key instead of TEST, the last measurement screen is then shown.

  • Page 65: Deleting Results

    NOVA and NOVA PRO Storing measurements 8.4. Deleting results Step 1 To enter the Memory screen press the MEM key. When no measurement was made, the last record is directly shown. When a measurement was made, a screen as in figure 8.4 is shown. Press then the UP or DOWN key to enter the record list.

  • Page 66: Usb Communication

    NOVA and NOVA PRO USB communication When a single record is deleted, its space in memory is freed and can be reused. The record number of the deleted record however is not used for new records. When all records are deleted, the complete memory space is freed and all IDs and numbers are reset.
  • Page 67 NOVA and NOVA PRO USB communication Figure 9.2: USB connector is located on the top side of the MFT housing Figure 9.3: USB connecting cable (type A- male to B-male) USB driver is installed automatically on a free COM port and confirmation that new hardware can be used follows.
  • Page 68 NOVA and NOVA PRO USB communication 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...
  • Page 69 NOVA and NOVA PRO USB communication Step 6 Click Download to initiate data transfer (Figure 9.7). When records are downloaded *.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).
  • Page 70 NOVA and NOVA PRO USB communication Figure 9.8: Generated Excel file example...
  • Page 71 NOVA and NOVA PRO USB communication...
  • Page 72 NOVA and NOVA PRO USB communication http://www.uniks.it info@uniks.it Uniks S.r.l. Via Vittori 57 408018 Faenza (RA) Italy http://www.uniks.it info@uniks.it Rev. U052021...

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