User manual MACROTEST 5035 © Copyright HT ITALIA 2011 Release EN 1.
MACROTEST 5035 Table of contents: 1. SAFETY PRECAUTIONS AND PROCEDURES ........................................................................3 1.1. Preliminary instructions ........................................................................................................... 3 1.2. During use ............................................................................................................................... 4 1.3. After use .................................................................
MACROTEST 5035 6.1. Reset procedure .................................................................................................................... 58 6.2. Default parameters ................................................................................................................ 58 7. INSTRUMENT CONNECTION TO A PC ..................................................................................59 8. MAINTENANCE ...................................................................................
MACROTEST 5035 1. SAFETY PRECAUTIONS AND PROCEDURES This apparatus conforms with safety standards IEC/EN61557 and IEC/EN61010-1 relating to electronic measuring instruments.
MACROTEST 5035 1.2.
MACROTEST 5035 2. GENERAL DESCRIPTION Dear Customer, we thank you for your patronage. The instrument you have just purchased will grant you accurate and reliable measurements provided that it is used according to the present manual’s instructions. The instrument was designed to grant the user the utmost safety conditions thanks to a new concept assuring double insulation and over voltage category III. 2.1.
MACROTEST 5035 2.2. INSTRUMENT DESCRIPTION LEGEND: 1. Display 2. Function keys 3. Rotary switch 1 2 FUNC Un/I∆n DIST S UL 3 START STOP FUNC DISP CLR RCL ESC SAVE FUNCTION key to select one measuring mode. Un/I∆n DIST Un/I∆n DIST key for selection of rated voltage, differential current or distance depending on which measurement is selected. S▲s S▲key for selection of RCD type (Common or Selective) or to increase the test duration interval or to scroll the results of the stored tests.
MACROTEST 5035 3. PREPARATION FOR USE 3.1. INITIAL CHECK This instrument has been checked mechanically and electrically prior to shipment. Any care has been taken to ensure that the instrument reaches you under safe conditions. You are recommended, however, to carry our a rapid check to detect any possible damage which might have been caused during transport. Should this be the case, immediately contact HT Italia. Check also that the packaging contains all the parts listed under paragraph 9.3.
MACROTEST 5035 3.5. HOW TO SET MEASUREMENT UNIT Is possible to set the distance measurement unit (in earth resistivity) following this procedure: 1. While pushing FUNC button turn the switch on any position. 2. The instrument will display the following screen. le m 3. Choose the desired distance measurement unit between meter and feet that change by pushing S▲ and UL▼ keys (appear m and ft). 4. Push SAVE key confirming the choice. The instrument will display the following screen.
MACROTEST 5035 4. DESCRIPTION OF THE ROTARY SWITCH FUNCTIONS 4.1. LOWΩ: CONTINUITY TEST OF EARTH PROTECTIVE AND EQUALIZING POTENTIAL CONDUCTORS The measurement is effected with a test current higher than 200mA and open circuit voltage ranging from 4 to 24V DC according to EN 61557-2 and VDE 0413 part 4. CAUTION Before carrying out the continuity test make sure that there is no voltage at the ends of the conductor under test. Turn the switch on LOWΩ position. Switch on the instrument.
MACROTEST 5035 4.1.1. Mode "CAL" 1. Select mode CAL by means of the FUNC key. 2. Connect the black and blue cables to the instrument input terminals B1 and B4 respectively: B1 B2 B3 B4 Connection of instrument terminals during calibration procedure. 3. If the cables supplied with the instrument are not long enough for the measurement you can extend the blue cable. 4. Connect the crocodiles to the cable terminals. 5.
MACROTEST 5035 CABLES USED FOR THE TEST Before each measurement always make sure that the calibration is referred to the cables in use. During a continuity test, if the resistance value free of calibration (that is the resistance value less the calibration offset value) is negative, the symbols o as well as blinking CAL are displayed (according to 5th screen paragraph 4.1.4).
MACROTEST 5035 4.1.3. Procedure "AUTO", "R+TIMER", "R-TIMER" 1. Select the desired mode by means of the FUNC key. 2. Connect the black and blue cables to the instrument input terminals B1 and B4 respectively. B1 B2 B3 B4 Connection of the instrument terminals during LOWΩ test. 3. If the cables supplied with the instrument are not long enough for the measurement you can extend the black cable. 4. Connect two crocodiles to the cable terminals. 5.
MACROTEST 5035 4.1.3.1. Mode "AUTO" At the end of the test, if the average resistance value Ravg results to be lower than 5Ω the instrument emits a double sound signal indicating the positive outcome of the test and displays one screen similar to the screen alongside. CAL LOWΩ 1.07 Ω 219 mA AUTO SAVE 4.1.3.2. SAVING: Average current Iavg. value test value The test can be stored pressing the SAVE key twice (according to paragraph 5.1).
MACROTEST 5035 CAL LOWΩ In case the mode R+TIMER or RTIMER was selected and a R+ or Rhigher than 99.9Ω was detected, the instrument emits an intermittent sound signal during the test, a long sound signal at the end of the test and displays the screen alongside. o> 99.9 Ω - - - mA 4s R+ TIMER In case that: RMEASURED-RCALIBRATION instrument displays alongside. CAL LOWΩ < 0Ω the the screen 99.9Ω is the maximum value. ATTENTION: value of R+ or Ris too high. Blinking CAL. o 0.
MACROTEST 5035 4.2. MΩ: INSULATION RESISTANCE WITH TEST VOLTAGE OF 50V, 100V, 250V, 500V OR 1000V The measurement is effected according to EN 61557-2 and VDE 0413 part 1. CAUTION Before effecting the insulation test make sure that the circuit under test is not energized and all the relative loads are disconnected. Turn the switch on MΩ position. Switch on the instrument.
MACROTEST 5035 Standard CEI 64-8/6 CEI 64-8/4 EN60439 EN60204 Brief description Test voltage Maximum limit value Systems SELV or PELV Systems up to 500V (Civil installations) Systems over 500V Floor and wall insulation in civil installations Floor and wall insulation in systems over 500V Electrical panel boards 230/400V Electrical equipment of machines 250VDC 500VDC 1000VDC 500VDC 1000VDC 500VDC 500VDC > 0.250MΩ > 0.500MΩ > 1.
MACROTEST 5035 4.2.1.2. Mode "TIMER" 6. Use the following keys to set the duration time of the test: 7. S▲ Press this key to increase the duration time of the test (Tmax=999 seconds). UL▼ Press this key to decrease the duration time of the test (Tmin=10 seconds). START STOP Press the START/STOP key. The instrument effects the measurement ending when the set time has elapsed. 999 seconds → Maximum value of the test duration. 10 seconds → Minimum value of the test duration.
MACROTEST 5035 4.2.2. Special cases which may occur during the tests "MAN", "AUTO", "TIMER" In case a value of RISO higher than RMAX was detected (depending on the selected voltage see following Note table, the instrument emits a double sound signal at the end of the test indicating the positive outcome of the test and displays one screen similar to the screen alongside.
MACROTEST 5035 4.3. RCD RCD : TESTS ON RCDS TYPE A OR AC The test is effected according to EN 61557-6, EN61008, EN61009, EN60947-2 B 4.2.4 and VDE 0413 part 6. CAUTION The automatic check of the RCD features causes the tripping of the RCD itself. Therefore check that there is no power or load connected downstream the RCD under test which could be affected by the installation switching off.
MACROTEST 5035 Note: According to standard praxis it is recommended to effect RCD test both with phase 0° and with phase 180°. Therefore the test is to be repeated for both phase valves of test current. If the RCD under test is of a type (which means sensitive to both AC and unidirectional pulsing leakage currents) it is advisable to effect the test both with sine wave and unidirectional pulse current with phase 0° and 180°.
MACROTEST 5035 The key UL▼ permits to select one of the following limit values for the contact voltage (which can be shown cyclically when pressing the key): 50V (default) 25V. UL▼ CAUTION The display of “Measuring” means that the instrument is measuring. During this phase never disconnect test leads. Note: ”Man 5 I∆n” and “AUTO” test modes aren’t available for RCD type A 500mA. 4.3.1. Measurement procedure for RCD test valid for all the working modes 1.
MACROTEST 5035 4.3.1.1. Mode "MAN x½" 4. START Press the START/STOP key once. The instrument carries out the test injecting a current in phase with positive half wave of the voltage indicated on display by 0°. STOP Press the START/STOP key twice. The instrument carries out the test injecting a current in phase with negative half wave of the voltage indicated on display by 180°.
MACROTEST 5035 4.3.1.2. Mode "MAN x1, x2, x5" 4. START Press the START/STOP key once. The instrument carries out the test injecting a current in phase with positive half wave of the voltage indicated on display by 0°. STOP Press the START/STOP key twice. The instrument carries out the test injecting a current in phase with negative half wave of the voltage indicated on display by 180°.
MACROTEST 5035 NOTE: ”Man 5 I∆n” and “AUTO” test modes aren’t available for RCD type A At the end of the test if all six tests resulted to be positive, the instrument displays the screen alongside relative to the last measurement effected. or RCD ms OK Ι∆N x5 1V 30mA t UL= 50V 180° Value of contact voltage Ut detected referred to the rated value of the RCD current set.
MACROTEST 5035 If the parameters set on the instrument are consistent with the kind of RCD under test (and if the latter works properly) the ramp test “ ” SHALL CAUSE THE RCD TRIPPING WITH A CURRENT LOWER THAN OR EQUAL TO THE SELECTED RATED DIFFERENTIAL CURRENT. This test is not used to be effected to compare the RCD tripping time at the tripping current, while the standards refer to the maximum tripping times in case the RCD is checked with a leakage current equal to the rated current. 4.3.1.5.
MACROTEST 5035 4.3.3. Anomalous cases which may occur during the RCD tests in any working mode Should the instrument detect that the phase and/or neutral cables are not connected to an installation, screen alongside is displayed when pressing START/STOP.
MACROTEST 5035 If the instrument detects that the earth cable (green) is not connected, the screen alongside is displayed for 5 seconds then the initial display is back. Check the connections of PE conductor under test. RCD ~ o>1999 Ω PE no SAVE or RCD Message “no PE”: the instrument does not detect the protection circuit. THE PREVIOUS RESULT CANNOT BE SAVED.
MACROTEST 5035 RCD ~ During the ramp test if the RCD trips to separate the circuit at a tripping current higher than I∆n (Type AC) or 1.4 I∆n (Type A with I∆n>10mA) or 2 I∆n (Type A with I∆n≤10mA), the instrument emits a long sound signal at the end of the test and displays the values alongside. or RCD o 33 mA 58ms RCD tripping time 1V t 0° UL= 50V ATTENTION: the RCD tripping current is higher than the rated value of the set differential current (I∆N=30mA was set in the example).
MACROTEST 5035 In case the instrument is unable to generate the current because the fault loop presents a too high resistance, the instrument emits a long sound signal at the end of the test and displays the values alongside.
MACROTEST 5035 4.4. LOOP : LINE/LOOP IMPEDANCE MEASUREMENT PROSPECTIVE SHORT CIRCUIT CURRENT Turn the switch on LOOP AND position. Switch on the instrument. FUNC The key FUNC permits to select one of the following measuring modes (which can be shown cyclically when pressing the key): Mode “P-N” (the instrument measures the resistance between the phase and neutral conductors and calculates the phase to neutral prospective short circuit current).
MACROTEST 5035 4.4.2. Mode "P-N" 1. Select P-N mode by means of the FUNC key. 2. If possible disconnect all low impedance loads downstream the point at which the measurement is to be taken, as such an impedance would be in parallel with the line impedance to be measured. 3. Connect the 3 black, blue and green connectors of the three-terminal shuko cable or of the single cables in the corresponding input terminals of the instrument B1, B3, B4 (see possible connections in the following pictures).
MACROTEST 5035 4.4.3. Mode "P-P" 1. Select P-P mode by means of the FUNC key. 2. If possible disconnect all low impedance loads downstream the point at which the measurement is to be taken, as such an impedance would be in parallel with the line impedance to be measured. 3. Connect the 3 black, green and blue connectors of the single cables in the corresponding input terminals of the instrument B1, B3, B4 (see possible connections in the following pictures).
MACROTEST 5035 4.4.4. Mode "P-PE" 1. Select P-PE mode by means of the FUNC key. 2. Connect the 3 black, blue and green connectors of the three-terminal shuko cable or of the single cables in the corresponding input terminals of the instrument B1, B3, B4 (see possible connections in the following pictures). When using untied cables connect the crocodiles to the free ends of the cables.
MACROTEST 5035 5. START Press the START/STOP key once. The instrument carries out the test injecting a current in phase with positive half wave of the voltage indicated on display by 0°. STOP Press the START/STOP key twice. The instrument carries out the test injecting a current in phase with negative half wave of the voltage indicated on display by 180°. At the end of the test the instrument emits a double sound signal indicating that the test is correctly terminated and displays the values alongside.
MACROTEST 5035 4.4.5. Mode " " 1. Connect the three black, red and green connectors of the untied cables in the corresponding input terminals of the instrument B1, B2, B3 and the crocodiles to the free ends of the cables. L1 L2 L3 N B1 B2 B3 B4 Instrument connection for phase sequence indication L1=black cable, L2=blue cable, L3=green cable 2. Connect the crocodiles to the three phases of the system under test.
MACROTEST 5035 4.4.6. Anomalous cases which may occur during LOOP tests in any working mode Should the instrument detect that the phase and/or neutral cables are not connected to an installation, screen alongside is displayed when pressing START/STOP. This screen is displayed when system the phase conductor was reversed with respect to the neutral. LOOP o P-N VOL Message "no VOL tAG”: a too low voltage was detected. AG LOOP oA P-N Message “Att”: too low voltage between phase and earth.
MACROTEST 5035 If the instrument detects that the earth cable (green) is not connected, the screen alongside is displayed for 5 seconds then the initial display is back. Check the connections of PE conductor under test. LOOP o>1999 Ω PE no If a contact voltage Ut higher than the selected limit (UL) is detected the instrument interrupts the test and emits a long sound signal at the end of the test and displays the values alongside.displays the screen alongside.
MACROTEST 5035 If the instrument finds a network frequency out of range it does not permit to effect the tests and displays the message alongside. Message “Err SYn cro”: frequency is out of range. LOOP o c SAVE THIS RESULT CANNOT BE SAVED. If under P-PE mode the instrument carries out the test and detects a resistance to higher than 1999Ω, the screen alongside is displayed.
MACROTEST 5035 4.4.7. Anomalous cases which may occur during phase sequence tests In case that every delta voltages result to be lower than 100V, the instrument does not effect the test and displays the screen alongside. Messagge “Lo VOL tAG”: the instrument has at least one too low voltage. The instrument does not effect the test. If the voltage present at B1 input too low, when START/STOP is pressed the instrument displays the message alongside.
MACROTEST 5035 If one cable is not connected to the network or one phase is absent, the instrument displays the screen alongside Black cable=L1 is not connected to one phase of the installation. Voltage between phase L3 and phase L1 is null (L3 - L1). 0V 0 V 388 V Black cable= L1 is not connected to one phase of the installation. Voltage between phase L2 and phase L3 is not null (L2- L3). Black cable=L1 is not connected to one phase of the installation.
MACROTEST 5035 4.5. Ra15mA : GLOBAL EARTH RESISTANCE MEASUREMENT Turn the switch on Ra15mA position. Switch on the instrument. 1. Connect the three black, blue and green connectors of the shuko cable or of the untied cables in the corresponding input terminals of the instrument B1, B3, B4 (see possible connections in the following pictures). When using untied cables connect the crocodiles to the free ends of the cables.
MACROTEST 5035 3. UL▼ 4. START STOP The key UL▼ permits to select one of the following limit values for the contact voltage (which can be shown cyclically when pressing the key): 50V (default) 25V. Press the START/STOP key. The instrument starts the test. At the end of the test the instrument emits a double sound signal indicating that the test is correctly terminated and displays the values alongside.
MACROTEST 5035 4.5.1. Anomalous cases which may occur during RA15mA Should the instrument detect that the phase and/or neutral cables are not connected to an installation, screen alongside is displayed when pressing START/STOP. Message "no": the instrument does not effect the test because a too low voltage was detected.
MACROTEST 5035 If the instrument detects that the earth cable (green) is not connected, the screen alongside is displayed for 5 seconds then the initial display is back. Check the connections of PE conductor under test. RCD LOOP o>1999 Ω PE no If a contact voltage Ut higher than the selected limit (UL) is detected the instrument interrupts the test and emits a long sound signal at the end of the test and displays the values alongside.displays the screen alongside.
MACROTEST 5035 If under P-PE mode the instrument caries out the test and detects a global earth resistance to higher than 1999Ω, the screen alongside is displayed for 5 seconds then the initial display is back. RCD LOOP o>1999 Ω P-PE Value of contact voltage Ut detected referred to the carried out value of the RCD current set. Resolution 1V. SAVE 4.6. SAVING: 31 V Message ">1999": the instrument detects an earth resistance higher than 1999Ω.
MACROTEST 5035 4.6.1. Measurement procedure for "2P" test mode 1. Select "2P" earth measurement mode by means of the F1 key. 2. Connect the Black, Red, Green and Blue cables to the corresponding input terminals of the instrument B1, B2, B3, B4 (see possible connections in the following picture). 3. Connect the black, and green cables to the earth plant and red and blue cables to the auxiliary rod. B1 B2 B3 B4 2 points earth resistance measurement 4. START STOP Press the START/STOP key.
MACROTEST 5035 When the environmental conditions preclude the “3P” measurement mode, as for example in the city center, In TT plants is possible to measure the earth resistance with the simplified “2P” method that gives an higher value than the “3P” mode does. An auxiliary rod is necessary, it must have an unimportant earth resistance and must be independent by the earth plant under test.
MACROTEST 5035 4.6.1.1. Earth resistance measurement from a socket On TT installations it’s possible to take an earth measurement with a simplified method, which gives an excess value (therefore safer), using the NEUTRAL of the national Energy Board taken directly from a socket as an auxiliary rod; if also the earth connection is available, naturally the measurement can be taken on the socket directly, between NEUTRAL and EARTH. Although this test is not provided for by CEI 64.
MACROTEST 5035 4.6.2. Measurement procedure for "3P" test mode The measurement is taken according to what prescribed for CEI 64.8, IEC 781, VDE 0413, EN61557-5. 1. Select "3P" earth measurement mode by means of the F1 key. 2. Connect the Black, Red, Green and Blue cables to the corresponding input terminals of the instrument B1, B2, B3, B4 (see possible connections in the following picture). 3. Connect the black, and green cables to the earth plant and red and blue cables to the auxiliary rods.
MACROTEST 5035 Note: If START/STOP key was kept pressed, the instrument takes more consecutive tests. 5. When a new value is acquired the instrument emits a short sound and calculates the new average value. 6. DISP Press DISP key to show how many measurements are in average value calculation and the measuring mode. 7. CLR Press CLR key if you want to cancel the medium value of the resistance and the no. of measurements which are included in the calculation.
MACROTEST 5035 4.6.3. Measurement procedure for "ρ" test mode The earth resistivity is a very useful parameter, its value could help the designer to correctly size the earth rods in an earth plant. The measurement is taken according to what prescribed for CEI 64.8, IEC 781, VDE 0413, EN61557-5 1. Select "ρ" earth measurement mode by means of the F1 key. 2.
MACROTEST 5035 At the end of the test the instrument displays the values alongside. Earth resistivity value ρ 36.5 Ω 2 m 0.93 Ω CAUTION The display of “Measuring” means that the instrument is measuring. During this phase never disconnect test leads. SAVE Note: SAVING: The tests can be stored pressing the SAVE key twice (according to paragraph 5.1). If START/STOP key was kept pressed, the instrument takes more consecutive tests. 8.
MACROTEST 5035 4.6.4. Anomalous cases which may occur during EARTH ρ tests If the voltmetric circuit (red and green cables) is interrupted, when pressing START/STOP the instrument doesn’t manage to read the minimum voltage, therefore a screen similar to the one beside appears. Make sure that the terminals are connected correctly and that the voltmetric rod (red conductor) has not been driven into a gravely or scarcely conductive ground. If necessary, pour water around the rod.
MACROTEST 5035 If the instrument measures an interfering voltage higher than 30V on the amperometric circuit, it doesn’t perform the test and a screen similar to the one beside appears. o 31 V VOL AG Voltage value on the amperometric circuit SAVE THE PREVIOUS RESULT CANNOT BE SAVED. If the resistance measured is higher than the full scale of the instrument, when pressing START/STOP the instrument performs the test and a screen similar to the one beside appears.
MACROTEST 5035 5. OPERATIONS WITH MEMORY 5.1. SAVING MEASUREMENTS If the results relative to the tests effected are to be stored you can proceed as follows: 1. SAVE Press the SAVE key once. If the memory of the instrument is not empty it displays the screen alongside. Number of the memory location in which the measurement results will be stored. Value of the parameter PLA related to the measurement to be saved. MEM 3 Pla 02 UL▼ 2.
MACROTEST 5035 5.2. RECALL MEASUREMENTS If you want to recall the stored test results proceed as follows: 1. RCL ESC Press the RCL/ESC key. If the memory of the instrument is not empty it displays the screen alongside. Number of the memory location in which the measurement results were stored. Value of the parameter PLA related to the saved measurement MEM 3 Pla 02 UL▼ 2. S▲s 3. DISP Use the UL▼, S▲s keys to select the memory location number to be displayed.
MACROTEST 5035 5.3. CLEAR MEMORY If you want to cancel the stored tests results proceed as follows: 1. RCL ESC Press the RCL/ESC key. The instrument displays a screen like the following: Number of the memory location in which the measurement results were stored. Value of the parameter PLA related to the saved measurement. MEM 3 Pla 02 UL▼t Use the UL▼, S▲ keys to select the number of the memory location. 2.
MACROTEST 5035 6. RESET OF THE INSTRUMENT AND DEFAULT PARAMETERS BEFORE OF A RESET PROCEDURE DOWNLOAD THE STORED TESTS ON A PC 6.1. RESET PROCEDURE 1. Press at the same time the keys DISP, CLR, RCL and then ignite the instrument. 2. The screen nearby is displayed for 5 seconds, after which the instrument emits a sound signal and then displays the screen relative to the function selected with the rotary switch.
MACROTEST 5035 7. INSTRUMENT CONNECTION TO A PC The connection between PC and instrument is realized through the serial port and optical serial cable, provided with the software package. Before effecting the connection it is necessary to select the COM port used for the transmission. To set this parameter start the software and look up the help on line. ATTENTION: The selected port shall NOT be shared by other devices or applications (example mouse, modem, etc.)..
MACROTEST 5035 8. MAINTENANCE 8.1. GENERAL 1. The tester you have purchased is a precision instrument. Strictly follow the instructions for use and storage reported in this manual to avoid any possible damage or danger during use. 2. Do not use this tester under unfavorable conditions of high temperature or humidity. Do not expose to direct sunlight. 3. Be sure to turn off the tester after use.
MACROTEST 5035 9. TECHNICAL SPECIFICATIONS 9.1. TECHNICAL FEATURES Accuracy is indicated as [% of reading + number of digits]. It refers to the atmospheric conditions listed in paragraph 9.2.1.
MACROTEST 5035 Tripping time (t∆N) Measuring range (ms) ½ I∆N, I∆N 1÷999 1÷200 general 2 I∆N 1÷250 selective 1÷50 general 5 I∆N RCD (*) 1÷160 selective Resolution (ms) Accuracy 1 ±(2% rdg + 2 dgt) (*) ”Man 5 I∆n” and “AUTO” test modes aren’t available for RCD type A 500mA - Earth resistance RA without RCD tripping Measuring range (Ω) 1 ÷ 1999 Test current Accuracy -0%, +(5% rdg + 3 dgt) Resolution (Ω) 1 0.
MACROTEST 5035 Global earth resistance (Ra15mA) Measuring range (Ω) 1 ÷ 1999 Test current Phase to earth test voltage Resolution (Ω) 1 Accuracy ±(5% rdg + 3 dgt) 15mA 100 ÷ 265V 50Hz ±0,5Hz Earth resistance measurement with voltamperometric method Measuring range (Ω) 0,01 ÷ 19,99 20,0 ÷ 199,9 200 ÷ 1999 Test current Open load test voltage Resolution (Ω) 0,01 0,1 1 Accuracy ±(5% rdg + 3 dgt) <10mA 77,5Hz <20V RMS Earth resistivity ρ measurement Measuring range (Ω) 0.06 ÷ 19,99 Ωm 20.0 ÷ 199.
MACROTEST 5035 9.2. ENVIRONMENT 9.2.1. Environmental working conditions Reference temperature: 23° ± 5°C ; (73°F ± 41°F) Working temperature: 0°C ÷ 40 °C ; (32°F ÷ 104°F) Relative humidity allowed: <80%RH Storage temperature: -10 ÷ 60 °C ; (14°F ÷ 140°F) Storage humidity: <80%RH This instrument complies with the requirements of the European Low Voltage Directives 2006/95/CEE and EMC 2004/108/CEE 9.3.
MACROTEST 5035 10. SERVICE 10.1. WARRANTY CONDITIONS This instrument is guaranteed against any defect in material and manufacturing in compliance with the general sales terms and conditions. Throughout the period of guarantee all defective parts may be replaced and the manufacturer reserves the right to repair or replace the product. If the instrument is to be returned to the after-sales service or to a dealer transportation costs are on the customer’s behalf. Shipment shall be however agreed upon.
MACROTEST 5035 11. PRACTICAL REPORTS FOR ELECTRICAL TESTS 11.1. LOWΩ: CONTINUITY MEASUREMENT OF PROTECTIVE CONDUCTORS Check the continuity of: a) protective conductors (PE), main equalizing potential conductors (EQP), secondary equalizing potential conductors (EQS) in TT and TN-S systems. b) neutral conductors having functions of protective conductors (PEN) in TN-C system.
MACROTEST 5035 Check the continuity among: a) earth poles of all the plugs and earth collector or node. b) earth terminals of class I instruments (Boiler etc.) and earth collector or node. c) main external masses (water, gas pipes etc.) and earth collector or node. d) auxiliary external masses to the earth terminal.
MACROTEST 5035 EXAMPLE OF INSULATION MEASUREMENT ON AN INSTALLATION SWITCH A SWITCH B SWITCH C OPEN OPEN OPEN OPEN OPEN SWITCH D SWITCH E Insulation measurements on an installation.
MACROTEST 5035 Switch situation 1 Point under test Measurement result Turn the switch Effect the measurement If R ≥ RLIMIT A, l D and E off on switch A If R< RLIMIT If R ≥ RLIMIT 2 Turn the switch Effect the measurement B off on switch A If R< RLIMIT If R ≥ RLIMIT Effect the measurement on switch B If R< RLIMIT 3 If R ≥ RLIMIT 4 Turn the switch Effect the measurement C off on switch B If R< RLIMIT If R ≥ RLIMIT Effect the measurement on switch C If R< RLIMIT 5 Judgment on the installation ☺ OK (
MACROTEST 5035 11.3. CHECK OF THE CIRCUIT SEPARATION The test, to be effected in case the protection is realized through separation (SELV or PELV or electrical separation), shall check that the insulation resistance measured according to the indications below (depending on the separation type) complies with the limits reported in the table relative to the insulation measurements.
MACROTEST 5035 EXAMPLE OF CHECKING THE SEPARATION AMONG ELECTRICAL CIRCUITS Insulation or safety transformer making the separation among the circuits. TEST AMONG THE ACTIVE PARTS Connect a test lead of the instrument to one of the two conductors of the separate circuit and the other to one of the conductors of a no separate circuit. Between active parts of the separated circuit... ...
MACROTEST 5035 11.4. WORKING TEST OF RCDS (RCD, RCD/DC, RCD S, RCD/DC S) Check whether general and selective RCDs have been installed and adjusted properly and whether they maintain their features over the time. The check shall confirm that the RCD trips at a current I∆ lower than its rated working current I∆n and that the tripping time meets, depending on the case, the following conditions: • • does not exceed the maximum time provided by the standards in case of general type RCDs (according to table).
MACROTEST 5035 11.5. RCD TRIPPING TIME TEST Check the real tripping time of the general RCDs (it does not apply to the selective RCDs). INSTALLATION PARTS TO BE CHECKED When facing RCDs with tripping current to be selected it is useful to effect this test to check the real RCD tripping current. For RCDs with fixed differential current this test can be effected to detect any leakage of the installation users.
MACROTEST 5035 11.6. SHORT CIRCUIT FAULT IMPEDANCE (ZPN, ZPP) Check that the tripping power of the RCD is higher than the maximum fault current of the installation. INSTALLATION PARTS TO BE CHECKED The test shall be effected in the point where the short circuit current is the highest possible, usually immediately downstream the RCD to be checked. The test shall be effected between phase and phase (Zpp) in the three phase installations and between phase and neutral (Zpn) in the single-phase installations..
MACROTEST 5035 11.8. EARTH RESISTANCE MEASUREMENT IN TT SYSTEMS Check that the RCD is coordinated with the earth resistance value. INSTALLATION PARTS TO BE CHECKED The earth installation under working conditions. The check is to be effected without disconnecting the earth plates.
MACROTEST 5035 11.9. EARTH RESISTANCE MEASUREMENT, 3-WIRE AND 2-WIRE METHODS Method for small earth plant Let a current circulate between the earth rod and a current probe positioned at a distance from the earth equipment outline corresponding to fivefold the diagonal of the area delimiting the earth equipment. Position the voltage probe at half-way between the earth rod and the current probe, then measure the voltage between the two.
MACROTEST 5035 11.10. EARTH RESISTIVITY MEASUREMENT This test aims at analysing the resistivity value of the ground in order to define the type of rods to be used. EQUIPMENT PARTS TO BE TESTED For the resistivity test admissible values do not exist. The various values measured by positioning the rods at growing distances “a” must be quoted in a graph. According to the resulting curve, suitable rods will be chosen.
Specific resistivity of the ground ρE (Ωm) MACROTEST 5035 Curve 1: as ρ decreases only in depth, it’s possible to use only a rod in depth. 1 Curve 2: as ρ decreases only until the depth A, it’s not useful to increase the depth of the rod beyond A. 2 3 Curve 3: even at a superior depth, ρ does not decrease, therefore a ring rod must be used. Distance between the rods a(m) APPROXIMATE EVALUATION OF INTENTIONAL RODS CONTRIBUTION (64-12 2.4.
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