Installation Tester BENNING IT 115 Operating Manual
Manufacturer: BENNING Elektrotechnik und Elektronik GmbH & Co. KG Münsterstraße 135 - 137 D - 46397 Bocholt Phone: +49 (0) 2871 - 93 - 0 • Fax: +49 (0) 2871 - 93 - 429 www.benning.de • duspol@benning.de This symbol on your device ensures that the device complies with the requirements laid down by the EU (European Union) with regard to safety and electromagnetic compatibility of devices.
BENNING IT 115 Content Table of contents 1 Preface...............................................................................................................................5 2 Safety and operating instructions ...................................................................................6 2.1 2.2 2.3 3 Warnings.....................................................................................................................6 Batteries / storage batteries and charger.......................
BENNING IT 115 5.8 6 Content Testing the protective conductor connection (PE) .....................................................49 Maintenance ....................................................................................................................51 6.1 6.2 6.3 6.4 7 Fuse replacement .....................................................................................................51 Cleaning...............................................................................................
BENNING IT 115 Preface 1 Preface BENNING would like to congratulate you on purchasing this BENNING IT 115 installation tester and its accessories. The BENNING IT 115 installation tester is a multifunctional tester for testing electrical installations in compliance with IEC 60364-6 (DIN VDE 0100-600) and EN 50110 (DIN VDE 0105-100).
BENNING IT 115 Safety and operating instructions 2 Safety and operating instructions The following symbols are used both in the operating manual and on the installation tester: Attention! Danger! Please observe the operating manual! Warning of dangerous voltage! Protection class II Earth (voltage to earth) 2.
BENNING IT 115 Safety and operating instructions Please observe that the measuring category of some accessories might be lower than that of the installation tester. Test probes and "Commander" test probes are provided with detachable protective caps. If these attachable protective caps are removed, the measuring category will be reduced to CAT II.
BENNING IT 115 Safety and operating instructions Remarks with regard to measurements: General The icon means that the selected measurement cannot be carried out due to irregular conditions at the input terminals. Carry out measurements of the insulating resistance, low-impedance resistance, continuity and earthing resistance on discharged objects only! The "PASS" / "FAIL" indication is activated, if a limiting value has been defined.
BENNING IT 115 Safety and operating instructions Loop impedance The lower limiting value of the prospective short-circuit current depends on the fuse type, on the fuse current rating and tripping time as well as on the ISC scaling factor. The stated accuracy of the parameters tested shall only apply, if the mains voltage is stable during measurement. Loop impedance measurements (Zs) involve tripping of residual current protection devices (RCDs).
BENNING IT 115 2.2 Safety and operating instructions Batteries / storage batteries and charger The installation tester can be operated with six alkaline batteries (type AA) or with rechargeable NiMH batteries (storage batteries). The specified operating time refers to storage batteries with a nominal capacity of 2100mAh. The batteries' state of charge is permanently displayed in the lower right part of the LC display. If the battery voltage is too low, this will be displayed as shown in figure 2.1.
BENNING IT 115 Safety and operating instructions Unpredictable chemical processes might occur during the charging of storage batteries that have not been used for a longer period of time (more than 6 months). In this case, it is recommended to repeat the charging / discharging cycle at least 2 to 4 times.
BENNING IT 115 2.
BENNING IT 115 Device description 3 Device description 3.1 Front panel Figure 3.
BENNING IT 115 3.2 Device description Connection panel Figure 3.
BENNING IT 115 3.3 Device description Rear panel 3 2 1 Figure 3.3: Rear panel Caption: 1 2 3 Cover of the battery / fuse compartment Information label Screws for the battery / fuse compartment cover Figure 3.
BENNING IT 115 Device description Figure 3.5: Bottom view Caption: 1 2 3 3.4 Information label Carrying strap openings Lateral covers Carrying the installation tester The installation tester can be carried in different ways by means of the accessories included in the standard scope of delivery. The tester can be hung around the operator's neck by means of the carrying strap. It is also possible to carry the tester in the padded carrying case and to use it in a horizontal position.
BENNING IT 115 Device description 3.4.1 Attachment of the carrying strap Please choose one of the two methods shown: Figure 3.6: First method Figure 3.7: Alternative method Please check the carrying strap for safe fastening regularly.
BENNING IT 115 3.5 Device description Scope of delivery and optional accessories 3.5.
BENNING IT 115 Management of measured values 4 Operating the BENNING IT 115 installation tester 4.1 Indications and acoustic warning signals 4.1.1 Connection monitor The connection monitor shows the voltages applied to the testing terminals as well as information on active testing terminals in the AC mains. The voltage applied is displayed together with the testing terminal indication. All three testing terminals L, N and PE are used for the selected measurement.
BENNING IT 115 Device description L and N have been interchanged. RCD has been tripped during measurement (in RCD functions). Portable RCD (PRCD) has been selected (only for documentation purposes). The test cable resistance for low-impedance measurement / continuity test has not been compensated. The test cable resistance for low-impedance measurement / continuity test has been compensated. High earthing resistance of the measuring probes. This might result in incorrect measuring results.
BENNING IT 115 Device description 4.1.6 Help menu ("HELP" key) HELP Opens the help menu. Help menus are available for all measuring functions. The help menu contains graphic connection diagrams showing how to connect the installation tester to the electrical installation. After having selected the desired measuring function, press the "HELP" key to view the corresponding help menu.
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BENNING IT 115 4.3 Device description "SETTINGS" mode Turn the measuring function selector switch to the "SETTINGS" mode in order to make the following settings at the tester: SELECT LANGUAGE (GB, D, E, F, NL) RCD TESTING (according to EN 61008 / EN 61009, IEC 60364-4-41, BS 7671, AS/NZS 3017) SET ISC FACTOR (0.20 - 3.00) COMMANDER ON/OFF INITIAL SETTINGS (reset to factory settings) Figure 4.
BENNING IT 115 Device description The maximum RCD tripping times vary from standard to standard. The times specified in the individual standards are listed in the following. By default, the tripping times in compliance with the EN 60364-4-41 standard are preset. The EN 60364-4-41 standard defines different tripping times for TN/IT networks and TT networks as can be seen in table 41.1.
BENNING IT 115 Device description Maximum testing times and selected testing current for standard (undelayed) RCDs: Standard ½×I∆N I∆N 2×I∆N 5×I∆N EN 60364-4-41 1000 ms 1000 ms 150 ms EN 61008 / EN 61009 300 ms 300 ms 150 ms BS 7671 2000 ms 300 ms 150 ms AS/NZS 3017 (I, II, III) 1000 ms 1000 ms 150 ms 40 ms 40 ms 40 ms 40 ms Maximum testing times and selected testing current for selective (delayed) RCDs: Standard ½×I∆N I∆N 2×I∆N 5×I∆N EN 60364-4-41 1000 ms 1000 ms 200 ms EN 61008 / EN 61009 500 ms 500 m
BENNING IT 115 Device description Note: The "Commander OFF" (disabled) option is intended for deactivating the operating keys of the "Commander" (except for the background lighting key). It is useful to disable the "Commander", if strong sources of interference might affect the correct functioning of the "Commander". 4.3.5 Initial settings In this menu, it is possible to reset the settings, measuring parameters and limiting values of the installation tester to their initial (factory) settings.
BENNING IT 115 RCD Device description RCD t Nominal differential current: I∆N=30 mA RCD type: AC, undelayed Testing current with initial polarity: (0°) Limiting value for contact voltage: 50 V Nominal differential current multiplier: ×1 Note: It is also possible to reset the tester to its initial (factory) settings by pressing the "TAB" key when simultaneously switching the tester on.
BENNING IT 115 Device description 5 Measurements 5.1 TRMS voltage, frequency and phase sequence The voltages applied to the testing terminals are permanently displayed by means of the connection monitor. In the VOLTAGE TRMS measuring range (true RMS voltage value), the measured values for voltage (AC/DC) and frequency as well as the phase sequence (rotary field) detected can be saved. The measurements are carried out in compliance with the EN 61557-7 standard. Key function as described in chapter 4.
BENNING IT 115 Device description How to perform voltage measurements Select the V≅ ≅ function by means of the function selector switch. The display shows VOLTAGE TRMS. Connect the test cables to the test object (see figure 5.2 and figure 5.3). The measurement is performed immediately after the VOLTAGE TRMS function has been selected. Figure 5.4: Examples for voltage measurements in single-phase and three-phase systems Results displayed for single-phase systems: Uln ...........
BENNING IT 115 5.2 Device description Insulating resistance The measurement of the insulating resistance is performed in order to prove the proper condition of the insulation and in order to exclude electrical danger.
BENNING IT 115 Device description How to perform insulating resistance measurements Select the R ISO function by means of the function selector switch. Set the required testing voltage and the limiting value (optional). Make sure that the test object is free of voltage and discharge available capacities. Connect the test cables to the test object (see figure 5.6). Press the "TEST" key to start the measurement. Double-click the "TEST" key (MΩ flashes) to perform a continuous measurement.
BENNING IT 115 5.3 Device description Low-impedance resistance / continuity test The measurement of the low-impedance resistance / continuity test is intended for testing the protective conductor, earthing conductor and equipotential bonding conductor connections of an electrical installation.
BENNING IT 115 Device description How to perform low-impedance measurements R LOWΩ Select the R LOW function by means of the function selector switch. Set the sub-function to R LOWΩ. Set the limiting value (optional). Connect the test cables to the installation tester and compensate the test cable resistance, if necessary (see section 5.3.3 Compensation (null balance) of the test cable resistance). Make sure that the test object is free of voltage and discharge available capacities.
BENNING IT 115 Device description How to perform continuity tests Select the R LOW function by means of the function selector switch. Set the sub-function to CONTINUITY. Set the limiting value (optional). Connect the test cables to the installation tester and compensate the test cable resistance, if necessary (see section 5.3.3 Compensation (null balance) of the test cable resistance). Make sure that the test object is free of voltage and discharge available capacities.
BENNING IT 115 Device description Note: The The highest value for test cable compensation is 5 Ω. If the resistance is higher, the compensation value will be reset to the default value. icon is displayed, if the test cable resistance has not been compensated.
BENNING IT 115 5.4 Device description RCD testing The testing of RCDs in RCD-protected installations requires various tests and measurements. The measurements are based on the EN 61557-6 standard. The following measurements and tests can be performed: Contact voltage, tripping time, tripping current and Automatic RCD testing Key function as described in chapter 4.2 Function selector switch Figure 5.
BENNING IT 115 Device description Connection plan Figure 5.17: Connection of the optional "Commander" test plug (044149) and the three-wire test cable 5.4.1 Contact voltage (Uc) Leakage current flowing to earth via the protective conductor connection causes a voltage drop at the earthing resistance, i.e. a voltage difference between the PE equipotential bonding and earth.
BENNING IT 115 Device description Figure 5.18: Example of a contact voltage measurement Results displayed: Uc ........contact voltage RL ........loop resistance (fault loop resistance) 5.4.2 Tripping time (RCDt) The tripping time measurement serves to test the sensitivity of the residual current protection devices (RCDs) at different nominal tripping differential currents I∆N. How to perform tripping time measurements Select the FI/RCD function by means of the function selector switch.
BENNING IT 115 Device description Figure 5.20: Example of a tripping current measurement Results displayed: I ...........tripping current Uci .......contact voltage at tripping current I or final value, if RCD does not trip t............tripping time 5.4.4 Automatic test The automatic RCD test is intended to perform a complete RCD test (tripping time at different fault currents, tripping current and contact voltage) in a sequence of automatic tests controlled by the installation tester.
BENNING IT 115 Device description Example of the test steps: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Figure 5.21: Test steps of the automatic test Top Bottom Figure 5.22: The "HELP" key toggles between the upper and the lower part of the result field. Results displayed: x1 .........step 1 tripping time (I∆=I∆N, 0º) x1 .........step 2 tripping time (I∆=I∆N, 180º) x5 .........step 3 tripping time (I∆=5×I∆N, 0º) x5 .........step 4 tripping time (I∆=5×I∆N, 180º) x½ ........
BENNING IT 115 5.5 Device description Loop impedance and prospective short-circuit current The loop impedance is a complex AC current resistance within a fault loop (earth fault L-PE) consisting of current source, external conductor and protective conductor. The installation tester measures the impedance of the loop and calculates the short-circuit current. The measurement complies with the requirements specified in the EN 61557-3 standard. Key function as described in chapter 4.
BENNING IT 115 Device description How to perform loop impedance measurements Select the ZS (L-PE) [English: ZLOOP (L-PE)] function by means of the function selector switch. Set the sub-function to Zloop or Zsrcd (for systems with RCDs). Set the testing parameters. Connect the test cables to the test object (see figure 5.24). Press the "TEST" key to start the measurement. Figure 5.25: Example of a loop impedance measurement Results displayed: Z............... loop impedance Isc ............
BENNING IT 115 5.6 Device description Line impedance and prospective short-circuit current / voltage drop The line impedance is a complex AC resistance within a current loop (short-circuit L-N or L-L) consisting of current source, external and neutral conductor (single-phase system) or between two external conductors (three-phase system). The line impedance measurement complies with the requirements specified in the EN 61557-3 standard.
BENNING IT 115 Device description 5.6.1 Line impedance and prospective short-circuit current Connection plan Figure 5.28: Connection of the optional "Commander" test plug (044149) and the three-wire test cable How to perform line impedance measurements Select the ZI (L-N/L) [English: ZLINE (L-N/L)] function by means of the function selector switch. Set the sub-function to Zline. Set the testing parameters. Connect the test cables to the test object (see figure 5.28).
BENNING IT 115 Device description Note: High fluctuations of the nominal voltage might influence the measuring results ( icon on the LC display). In this case, it is recommended to repeat the measurements and to check whether the measuring results are stable. 5.6.2 Voltage drop Voltage drop calculation is based on the difference between the line impedance at the measuring point (e.g. socket) and the line impedance at the reference point (e.g. distribution). Connection plan Figure 5.
BENNING IT 115 Device description Results displayed: ∆U ............ voltage drop Isc ............ prospective short-circuit current Z............... line impedance at the measuring point Zref .......... line impedance at the reference point The voltage drop is calculated as follows: ∆U[%] = ( Z − ZREF) ⋅ IN ⋅ 100 UN with: ∆U ........ calculated voltage drop Z ........... line impedance at the measuring point ZREF ...... line impedance at the reference point IN ..........
BENNING IT 115 5.7 Device description Earthing resistance An adequate and reliably effective earth connection is an important prerequisite for the correct functioning and safety of electrical installations. In combination with the optional earthing kit (044113), it is possible to perform earthing resistance measurements at main earthing systems, lightning arresters and local earth connections. The measurement complies with the EN 61557-5 standard.
BENNING IT 115 Device description Figure 5.34: Connection of the optional earthing kit (044113) – Measurement at the lightning arrester Figure 5.35: Example of an earthing resistance measurement Results displayed: R .............. earthing resistance Rp ............ resistance of the S probe, probe resistance (potential) Rc ............
BENNING IT 115 5.8 Device description Testing the protective conductor connection (PE) In case of new or modified installations, it might happen that the protective conductor (PE) and the external conductor L (phase) have been accidentally reversed. This is a very dangerous situation! For this reason, it is important to check whether a dangerous phase voltage is applied to the protective conductor connection.
BENNING IT 115 Device description Testing the protective conductor connection (PE) Select the ZI (L-N/L) [English: ZLINE], ZS (L-PE) [English: ZLOOP] or FI/RCD function by means of the function selector switch. Connect the test cables to the test object (see figure 5.36 and 5.37). Touch the silver contact electrode of the "TEST" key for at least two seconds. If phase voltage is connected to the PE connection, the warning is shown on the LC display of the installation tester and the buzzer sounds.
BENNING IT 115 Maintenance 6 Maintenance Unauthorized persons are not allowed to open the installation tester. The installation tester does not contain any replaceable components except for the batteries / storage batteries and the fuses. 6.1 Fuse replacement Three fuses are located behind the rear cover of the installation tester: F1 M 0.
BENNING IT 115 6.4 Maintenance Service For repairs or service, please contact your specialty retailer or the BENNING Service Center. BENNING Elektrotechnik und Elektronik GmbH & Co. KG Robert-Bosch-Str. 20 D - 46397 Bocholt BENNING Helpdesk phone no.: +49 (0)2871 - 93 - 555 www.benning.de • hotline@benning.
BENNING IT 115 Technical data 7 Technical data 7.1 Insulating resistance Insulating resistance (nominal voltages of 50 VDC, 100 VDC and 250 VDC) Measuring range according to EN 61557-2: 0.15 MΩ ÷ 199.9 MΩ Accuracy Measuring range (MΩ Ω) Resolution (MΩ Ω) 0.01 0.00 ÷ 19.99 ±(5 % of the measured value + 3 digits) 20.0 ÷ 99.9 ±(10 % of the measured value) 0.1 100.0 ÷ 199.
BENNING IT 115 7.2 Technical data Low-impedance resistance / continuity test 7.2.1 Low-impedance resistance R LOW Measuring range according to EN 61557-4: 0.16 Ω ÷ 1999 Ω Accuracy Measuring range R (Ω Ω) Resolution (Ω Ω) 0.01 0.00 ÷ 19.99 ±(3 % of the measured value + 3 digits) 0.1 20.0 ÷ 199.9 ±(5 % of the measured value) 1 200 ÷ 1999 Measuring range R+, R- (Ω Ω) 0.0 ÷ 199.9 200 ÷ 1999 Resolution (Ω Ω) 0.1 1 Accuracy ± (5 % of the measured value + 5 digits) Open-circuit voltage .....................
BENNING IT 115 7.3 Technical data Residual current protection devices (RCDs) 7.3.1 General data Nominal tripping differential current ........10 mA, 30 mA, 100 mA, 300 mA, 500 mA, 1000 mA Accuracy.................................................-0 / +0,1⋅I∆; I∆ = I∆N, 2×I∆N, 5×I∆N -0.1⋅I∆ / +0; I∆ = 0.5×I∆N AS / NZS: ± 5 % Shape of testing current..........................sinusoidal (type AC), pulsating (type A, type F) DC offset for pulsating testing current.....6 mA (typical) RCD type.................
BENNING IT 115 Technical data 7.3.3 Tripping time (RCD t) The entire measuring range complies with the requirements specified in the EN 61557-6 standard. Measuring range (ms) Resolution (ms) Accuracy 0.1 0.0 ÷ 40.0 ±1 ms 0.1 0.0 ÷ max. time * ±3 ms * The maximum measuring duration depends on the RCD testing standard selected (see chapter 4.4.5 RCD testing) – The specification shall apply to maximum times >40 ms. Testing current.......................................
BENNING IT 115 7.4 Technical data Loop impedance and prospective short-circuit current 7.4.1 Zs function (for systems without RCD) Loop impedance Measuring range according to EN 61557-3: 0.25 Ω ÷ 9.99 kΩ Accuracy Measuring range (Ω Ω) Resolution (Ω Ω) 0.01 0.00 ÷ 9.99 ± (5 % of the measured value + 5 digits) 0.1 10.0 ÷ 99.9 1 100 ÷ 999 ±10 % of the measured value 10 1.00 k ÷ 9.99 k Prospective short-circuit current (calculated value) Measuring range (A) Resolution (A) Accuracy 0.01 0.00 ÷ 9.99 0.1 10.
BENNING IT 115 7.5 Technical data Line impedance and prospective short-circuit current / voltage drop Line impedance Measuring range according to EN 61557-3: 0.25 Ω ÷ 9.99 kΩ Accuracy Measuring range (Ω Ω) Resolution (Ω Ω) 0.01 0.00 ÷ 9.99 ± (5 % of the measured value + 5 digits) 0.1 10.0 ÷ 99.9 1 100 ÷ 999 ±10 % of the measured value 10 1.00 k ÷ 9.99 k Prospective short-circuit current (calculated value) Measuring range (A) Resolution (A) 0.01 0.00 ÷ 0.99 0.1 1.0 ÷ 99.9 1 100 ÷ 999 10 1.00 k ÷ 99.
BENNING IT 115 7.7 Technical data TRMS voltage, frequency and phase sequence 7.7.1 TRMS voltage (AC/DC) Measuring range (V) 0 ÷ 550 Resolution (V) 1 Accuracy ± (2 % of the measured value + 2 digits) Measuring method................................. true r.m.s. value (TRMS) Frequency range ................................... 0 Hz, 14 Hz ÷ 500 Hz 7.7.2 Voltage of the connection monitor Measuring range (V) 10 ÷ 550 Resolution (V) 1 Accuracy ±(2 % of the measured value + 2 digits) Resolution (Hz) 0.
BENNING IT 115 7.8 Technical data General data Power supply voltage............................. 9 VDC (6×1.5 V batteries or storage batteries, type AA) Operation............................................... typically 20 h Input voltage of charging jack ................ 12 V ± 10 % Input current of charging jack................. max. 400 mA Storage battery charging current ........... 250 mA (internally regulated) Measuring category ...............................
BENNING IT 115 Appendix A – Fuse table Appendix A Fuse table – Prospective short-circuit current Fuse, utilization category gL / gG gG: gL: general-purpose fuse for general applications, mainly for cable and line protection former VDE utilization category, replaced by gG Nominal current (A) 2 4 6 10 16 20 25 35 50 63 80 100 125 160 200 250 315 400 500 630 710 800 1000 1250 Disconnection time [s] 35m 0.1 0.2 Minimum prospective short-circuit current (A) 32.5 22.3 18.7 65.6 46.4 38.8 102.8 70 56.5 165.
BENNING IT 115 Appendix A – Fuse table Line safety switch, tripping characteristic B Range of instantaneous tripping: 3 - 5 x IN Nominal current (A) 6 10 13 15 16 20 25 32 40 50 63 Disconnection time [s] 35m 0.1 0.2 0.
BENNING IT 115 Appendix A – Fuse table Line safety switch, tripping characteristic K Range of instantaneous tripping: 8 - 14 x IN Nominal current (A) 0.5 1 1.6 2 4 6 10 13 15 16 20 25 32 Disconnection time [s] 35m 0.1 0.2 0.4 Minimum prospective short-circuit current (A) 7.5 7.5 7.5 7.
BENNING IT 115 Appendix B – Standard and optional accessories Appendix B Standard and optional measuring functions accessories for specific The table below lists recommended standard and optional accessories required for specific measurements. Please refer to chapter 3.5 for further information on standard and optional accessories.
BENNING IT 115 Appendix C – Commanders Appendix C "Commander" test probe, "Commander" test plug C.1 Safety warnings Measuring categories of the optional "Commanders" "Commander" test probe (switchable by means of "TEST" key) Item no. 044115 without attachable protective cap, 18 mm tip: CAT II 1000 V to earth with attachable protective cap, 4 mm tip: CAT II 1000 V / CAT III 600 V / CAT IV 300 V to earth "Commander" test plug for shock-proof socket (switchable by means of "TEST" key) Item no.: 044149 ....
BENNING IT 115 C.3 Appendix C – Commanders Description of the optional "Commanders" Figure C.1: Front of "Commander" test probe (switchable by means of "TEST" key) Figure C.2: Front of the optional "Commander" test plug for shock-proof socket (switchable by means of "TEST" key) (044149) Figure C.
BENNING IT 115 C.