Operating Instructions PROFITEST MASTER Series PROFITEST MTECH+, MPRO, MXTRA, MBASE+ IEC 60364-6, EN 50110-1 3-447-149-03 1/2.
Table of Contents Page 1 Safety Instructions .............................................................. 4 2 Applications......................................................................... 5 2.1 Intended Use / Use for Intended Purpose ............5 2.2 Use for Other than Intended Purpose ...................5 2.3 Liability and Guarantee.........................................5 2.4 Opening the Instrument / Repairs.........................5 2.5 Scope of Functions ................................
13.3 Settings for Calculating Short-Circuit Current – Parameter ISC .................................................56 14 Measuring Supply Impedance (ZL-N Function)................... 57 15 Earthing Resistance Measurement (Function RE) .............. 59 15.1 Earthing Resistance Measurement – Mains Powered..................................................60 15.2 Earthing Resistance Measurement – Battery Powered, “Battery Mode” (PROFITEST MPRO & PROFITEST MXTRA only)........................................
1 Safety Instructions Observe this documentation, in particular all included safety information, in order to protect yourself and others from injury, and to prevent damage to the instrument. The operating instructions and the condensed operating instructions should be made available to all users. General • • • • • Tests/measurements may only be performed by a qualified electrician, or under the supervision and direction of a qualified electrician.
Applications Please read this important information! 2.1 Use for Other than Intended Purpose Using the test instrument for any purposes other than those described in these operating instructions, or in the test instrument’s condensed operating instructions, is contrary to use for intended purpose. 2.
3 Documentation This documentation describes several test instrument. As a result, features and functions may be described which do not apply to your instrument. Furthermore, illustrations may differ from your instrument. Note These operating instructions describe a test instrument with software/firmware version 1.16.20.
5 The Instrument 5.3 5.
5.4 Instrument Overview Test Instrument and Adapter 1 A 2 3 4 5 6 7 2 15 16 17 * * 8 * 14 13 12 11 10 9 * See section 10.1 on page 36 regarding use of the probes.
(1) Control Panel – Display Panel See section 6.1, “Control Panel”, on page 16. See section 6.2, “Display”, on page 16. (2) Eyelets for the Neck Strap The included neck strap can be attached at the right and left hand sides of the instrument. You can hang the instrument from your neck and keep both hands free for measurement.
5.5 Technical Data Nominal Ranges of Use Overload Capacity 120 V (108 V 132 V) 230 V (196 V 253 V) 400 V (340 V 440 V) Frequency fN 16⅔ Hz (15.4 V 18 Hz) 50 Hz (49.5 V 50.5 Hz) 60 Hz (59.4 V 60.6 Hz) 200 Hz (190 V 210 Hz) 400 Hz (380 V 420 Hz) Overall voltage range 65 V 550 V Overall frequency range 15.4 Hz 420 Hz Line voltage Sinusoidal Temperature range 0 C + 40 C Battery voltage 8 V 12 V Supply impedance angle Corresponds to cos = 1 0.
Characteristic Values for PROFITEST MTECH+ and PROFITEST MBASE+ 5.6 Function Measured Quantity Resolution 0.1 V 1V 0.1 Hz 1 Hz 0.1 V 1V 0.1 V 1V 0.1 V 1V 5 M UL-N 0 … 99.9 V 100 … 600 V 15.0 … 99.9 Hz 100 … 999 Hz 0 V … 99.9 V 100 V … 600 V 0 … 99.9 V 100 … 600 V 0 … 99.9 V 100 … 600 V UIN 0 … 70.0 V 0.1 V 0.
PROFITEST MTECH+ and PROFITEST MBASE+ Function Measured Quantity RINS, RE INS RISO U RLO RLO ROFFSET Display Range 1 k … 999 k 1.00 M … 9.99 M 10.0 M … 49.9 M 1 k … 999 k 1.00 M … 9.99 M 10.0 M … 99.9 M 1 k … 999 k 1.00 M … 9.99 M 10.0 M … 99.9 M 100 M … 200 M 1 k… 999 k 1.00 M… 9.99 M 10.0 M… 99.9 M 100 M … 500 M 10 … 999 V 1.00 … 1.19 kV 0.00 … 9.99 10.0 … 99.9 100 … 199 0.00 … 9.
5.7 Function Characteristic Values for PROFITEST MXTRA and PROFITEST MPRO Measured Quantity UL-PE UN-PE f U U3 AC UProbe UL-N UIN RE IN IF (IN = 6 mA) IF (IN = 10 mA) IF (IN = 30 mA) IF (IN = 100 mA) IF (IN = 300 mA) IF (IN = 500 mA) UI / UL = 25 V UI / UL = 50 V tA (IN × 1) IF tA (IN × 2) tA (IN × 5) ZL-PE ( ZL-N ) + DC8 ZL-PE ISC (ZL-PE ZL-PE DC8) ZL-N , + ZL-PE (15 mA) ISC (15 mA) RE.sl (without probe) RE (with probe) RE (15 mA) (without/with probe) RE.
Characteristic Values for PROFITEST MXTRA and PROFITEST MPRO Connections Func- Measured tion Quantity EXTRA IMD test RINS, RE INS RISO Nominal Values Measuring Uncertainty Intrinsic Uncertainty 20 k… 199 k 200 k … 648 k 2.51 M IT system nominal voltages UN = 120 V, 230 V, 400 V, 500 V fN = 50, 60 Hz ±7% ±12% ±3% ±5% ±10% ±2% 1 k 1k … 999 k 1.00M … 9.99 M 10 k 10.0M … 49.9 M 100 k 50 k … 999 k 1.00 M … 49.9 M UN = 50 V IN = 1 mA 1 k 1 k … 999 k 1.00 M … 9.
Characteristic Values, Special Measurements with PROFITEST MPRO and PROFITEST MXTRA Function Measured Quantity RE, 3-pole RE, 4-pole RE, 4-pole selective with clamp meter RE BAT Soil resistivity (p) Display Range Test ResoCurrent / lution Signal Freq. Measuring Range 1 0.00 … 9.99 10.0 … 99.9 100 … 999 1.00 k … 9.99 k 10.0 k … 50.0 k 0.00 … 9.99 10.0 … 99.9 100 … 999 1.00 k … 9.99 k 10.0 k … 19.9 k 10 10.0 k… 49.9 k 11 0.01 0.1 1 0.01 k 0.1 k 0.01 0.
6 Operating and Display Elements 6.1 Control Panel The display and control panel can be swiveled forward or backward with the detented swivel hinge. The instrument can thus be set to the optimum reading angle. LEDs and Connection Symbols section 6.
6.4 LED Indications, Mains Connections and Potential Differences LED Signals Status NETZ/ MAINS Lights up green NETZ/ MAINS NETZ/ MAINS Blinks green NETZ/ MAINS NETZ/ MAINS Blinks red Test Plug MeaFunction Switch Position suring Adapter X X X X Lights up red X Blinks yellow X UL/RL Lights up red X X FI/RCD Lights up red X X IN / IF , ZL-N / ZL-PE / RE, U, ZST, kWh, IMD, int. ramp, RCM IN / IF , ZL-N / ZL-PE / RE, U, ZST, kWh, IMD, int.
Mains Connection Test — 3-Phase System — LCD Connection Pictographs ! Attention! The mains connection test may not be used to test systems or system components for the absence of voltage! Status 18 Test Plug Measuring Adapter Function Switch Position Function/Meaning Is displayed U (3-phase measurement) Clockwise rotation Is displayed U (3-phase measurement) Counter-clockwise rotation Is displayed U (3-phase measurement) Short between L1 and L2 Is displayed U (3-phase measurement) Short
Connection Test — Battery Powered Earthing Resistance Measurements, “Battery Mode” Status Test Plug MeaFunction Function/Meaning suring Switch Position Adapter PE Is displayed L RE Standard display without connection messages RE Interference voltage at probe S > 3 V Restricted measuring accuracy N Is displayed PRO-RE Is displayed Clamp meter RE Is displayed PRO-RE RE Is displayed PRO-RE RE Is displayed PRO-RE RE Interference/measuring current ratio > 50 at RE(sel), 1000 at RE(2Z) Restr
Battery test Is displayed All Rechargeable batteries must be recharged or replaced towards the end of their service life (U < 8 V). Memory Status Is displayed Is displayed Is displayed Is displayed Is displayed Is displayed Is displayed Is displayed Is displayed Memory occupancy ≥ 100% Memory occupancy ≥ 87.5% U, RINS, RLO, RE, ZL-N, ZL-PE, IF , IN, Setup, EXTRA, SENSOR Memory occupancy ≥ 75% Memory occupancy ≥ 62.5% Memory occupancy ≥ 50% Memory occupancy ≥ 37.
X X IN / IF ZL-N / ZL-PE / RE All X X Interference voltage Remedy: Device under test must be disconnected from all sources of voltage Interference voltage > 20 V at the probes: H to E or S to E No measurement possible RINS / RLO PRO-RE RE (bat) PRO-RE RE (bat) Probe ES not connected or connected incorrectly PRO-RE/ 2 RE (bat) Generator current clamp (E-Clip-2) not connected All measurements with Interference voltage at the probe probe X X X RISO X IN / IF ZL-N / ZL-PE ZST, RST, RE Me
X X X X RE IN / IF X IN / IF ZL-N / ZL-PE / RE IN / IF RE IN / IF The polarity of the 2-pole adapter must be reversed. N and PE are reversed. 1) Mains connection error Remedy: Check the mains connection.
Entry Plausibility Check – Parameters Combination Checking — LCD Pictographs Status Test Plug MeaFunction Switch suring Position Adapter Function/Meaning Parameter out of range IN 5 × 500 mA is not possible IN / IF EXTRA ta + IΔ Types B, B+ and EV/MI not possible with G/R, SRCD, PRCD >IN 180° not possible for RCD-S, G/R, SRCD, PRCD-S, PRCD-K IN / IF DC not possible with G/R, SRCD, PRCD IN / IF Half-wave or DC not possible with type AC IN / IF DC not possible with type A, F EXTRA RC
All The parameters you have selected do not make sense in combination with previously configured parameters. The selected parameter settings will not be saved. Remedy: Enter other parameters. RE 2-pole measurement via earthing contact plug is not possible in IT systems. EXTRA ta+I The intelligent ramp is not possible with RCD types RCD-S and G/R.
Database and Entry Operations — Pictographs IN / IF ZL-N / ZL-PE EXTRA tA+I EXTRA RCM Measured Value Storage with Deviating Electrical Circuit Parameter The electrical circuit parameter selected by yourself at the test instrument does not coincide with the parameter entered under object data in the structure. Example: Residual operating current is specified as 10 mA in the database, but you have performed measurement with 100 mA.
7 Operation ! Attention! ! The protective foil on the two sensor surfaces (finger contacts) of the test plug must be removed to ensure reliable detection of touch voltages. 7.1 If commercially available, individual rechargeable batteries are used, they must be charged externally. Do not use the Z502R charger to charge commercially available individual batteries.
8 Instrument Settings SETUP Menu Selection for Operating Parameters 0 Display: date/time Display: auto shutdown of the tester after 60 s. 0a Display: auto shutdown of display illumination after 15 s.
Menu Selection for Operating Parameters 0 Display: date/time Display: auto shutdown of the tester after 60 s. 0a Display: auto shutdown of display illumination after 15 s.
Significance of Individual Parameters 3c User Interface Language (CULTURE) 0a Test Instrument On-Time ➭ Select the desired country setup with the appropriate country code. The period of time after which the test instrument is automatically shut off can be selected here. This selection has a considerable influence on the service life and the charging status of the batteries.
3f Adjusting Brightness and Contrast 4 Selecting, Adding or Deleting an Inspector Jump back to previous menu Increase brightness Add a new inspector Decrease brightness Increase contrast Decrease contrast Select letter/character 3g DB-MODE – Display of the Database in the Text or ID Mode Select letter/character Accept letter/character Accept name Delete letter/character Toggle: upper/lowercase, vowel mutations & special chars. See also section 10.8 on page 39 regarding the entry of a text.
9 Database 9.1 Creating Distributor Structures, General A complete distributor structure with data for electrical circuits and RCDs can be created in the test instrument. This structure makes it possible to assign measurements to the electrical circuits of various distributors, buildings and customers. There are two possible procedures: • On location or at the construction site: create a distributor structure in the test instrument.
Icons Meaning Meanings of icons from top to bottom: Customer, building, distributor, RCD, electrical circuit, operating equipment, machine and earth electrode (display of the icons depends on the selected structure element). Selection: UP/DOWN scroll keys and In order to add a designation to the selected structure element, refer to the edit menu in following column. Delete the selected structure element. Show measurement data, if a measurement has been performed for this structure element.
9.3.1 Creating Structures (example for electrical circuit) Entering a Designation After selection with the MEM key, all setting options for the creation of a tree structure are made available on three menu pages (1/3, 2/3 and 3/3). The tree structure consists of structure elements, referred to below as objects.
9.3.2 Searching for Structure Elements Scroll up Scroll down Comfirm selection / change level Display object or ID number End search Menu selection page 3/3 Regardless of the currently selected object, the search is started at database. Go to page 3/3 in the database menu. Search for ID number Search for text Search for ID number or text. After selecting text search... Select character Select character If no further matches are found, the message shown above is displayed. 9.
Note If you change the parameters in the measurement view, they’re not saved for the structure element. A measurement with changed parameters can nevertheless be saved to the structure element, and any changed parameters are documented in the report for each measurement. Data Evaluation and Report Generation with the Report Generating Program All data, including the distributor structure, can be transferred to the PC and evaluated with the help of the report generating program.
10 General Information on Measurements 10.
one of the following displays depending upon poling of the plug: – Display at the connection pictograph: PE interrupted (x), or underlying protective conductor bar interrupted with reference to the keys at the test plug Cause: Voltage measuring path interrupted Consequence: measurement is disabled – Display at the connection pictograph: Top protective conductor bar interrupted with reference to the keys at the test plug Cause: current measuring path interrupted Result: no measured value display Note 10.
10.7 Setting Parameters or Limit Values using RCD Measurement as an Example 1 3 2 2 2 6 3 4 4 4 5 5 6 1 Access the submenu for setting the desired parameter. 2 Select a parameter using the or scroll key. 3 Switch to the setting menu for the selected parameter with the scroll key. 4 Select a setting value using the or scroll key. 5 Acknowledge the setting value with the key. This value is transferred to the settings menu.
10.8 10.8.1 Freely Selectable Parameter Settings or Limit Values Changing Existing Parameters 10.8.2 Adding New Parameters Individual parameters can be changed for certain measuring functions, i.e. adjusted within predetermined limits. The EDIT menu doesn’t appear until after switching to the right-hand column and selecting the editable parameter . For certain measuring functions, additional values within predefined limits can be added in addition to the fixed values.
10.9 2-Pole Measurement with Rapid or Semiautomatic Polarity Reversal Rapid, semiautomatic polarity reversal is possible for the following measurements: • Voltage U • Loop impedance ZLP-E • Internal line resistance ZL-N • Insulation resistance RINS Rapid Polarity Reversal at the Test Plug The polarity parameter is set to AUTO. Fast and convenient switching amongst all polarity variants, or switching to the parameter settings submenu, is possible by pressing the IN key at the instrument or the test plug.
11 Measuring Voltage and Frequency Select the Measuring Function U Switch Back and Forth Between Single and 3-Phase Measurement Press the softkey shown at the left in order to switch back and forth between single and 3-phase measurement. The selected phase measurement is displayed inversely (white on black). 11.1 11.1.
➭ Press softkey U3~. A clockwise phase sequence is required at all 3-phase electrical outlets. • Measurement instrument connection is usually problematic with CEE outlets due to contact problems. Measurements can be executed quickly and reliably without contact problems with the help of the Z500A variable plug adapter set available from GMC.
12 Testing RCDs The testing of residual current devices (RCDs) includes: • Visual inspection • Testing • Measurement Use the test instrument for testing and measurement. ! RCD/FI Table Waveform Correct RCD/RCCB Function Differential Current Type AC Type A/F Type B*/ Type EV/ B+* MI* ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ Suddenly occurring Alternating current Attention! When testing systems with RCCBs, they may switch off. This may occur even though it’s not normally provided for by the test.
Measurement With or Without Probe Measurements can be performed with or without a probe. Measurements with probe require that the probe and reference earth are of like potential. This means that the probe must be positioned outside of the potential gradient area of the earth electrode (RE) in the RCD safety circuit. The distance between the earth electrode and the probe should be at least 20 m. The probe is connected with a 4 mm contact-protected plug.
1) Measuring Touch Current Without Tripping the RCD 2) Tripping Test after the Measurement of Touch Voltage Measuring Method ➭ Press the IN key. The instrument uses a measuring current of only 1/3 nominal residual current for the determination of touch voltage UIN which occurs at nominal residual current. This prevents tripping of the RCCB. This measuring method is especially advantageous, because touch voltage can be measured quickly and easily at any electrical outlet without tripping the RCCB.
12.2 Special Tests for Systems and RCDs 12.2.1 Testing Systems and RCCBs with Rising Residual Current (AC) for Type AC, A/F, B/B+ and EV/MI RCDs (PROFITEST MTECH+, PROFITEST MXTRA only) Touch voltage: Measuring Method The instrument generates a continuously rising residual current of (0.3 … 1.3) × IN within the system for the testing of RCDs. The instrument stores the touch voltage and tripping current values which were measured at the moment tripping of the RCCB occurred, and displays them.
12.2.2 Testing Systems and RCCBs with Rising Residual Current (AC) for Type B/B+ and EV/MI RCDs (PROFITEST MTECH+PROFITEST MXTRA) Start Measurement In accordance with IEC 61557 / EN 61557, it must be substantiated that, with smooth direct current, residual operating current is no more than twice the value of rated residual current IN. A continuously rising direct current, beginning with 0.2 times rated residual current IN, must be applied to this end.
12.2.4 Testing of RCCBs which are Suitable for Pulsating DC Residual Current In this case, RCCBs can be tested with either positive or negative half-waves. The standard calls for tripping at 1.4 times nominal current. Select Measuring Function IN Set Parameter – Positive or Negative Half-Wave Waveform: 12.3 12.3.
Set Parameter – PRCD with Non-Linear Elements Note Selective RCDs demonstrate delayed response characteristics. Tripping performance is briefly influenced (up to 30 s) due to pre-loading during measurement of touch voltage. In order to eliminate pre-charging caused by the measurement of touch voltage, a waiting period must be observed prior to the tripping test. After the measuring sequence has been started (tripping test), blinking bars are displayed for approximately 30 seconds.
12.3.3 SRCD, PRCD-S (SCHUKOMAT, SIDOS or comparable) RCCBs from the SCHUKOMAT SIDOS series, as well as others which are of identical electrical design, must be tested after selecting the corresponding parameter. Monitoring of the PE conductor is performed for RCDs of this type. The PE conductor is monitored by the summation current transformer. If residual current flows from L to PE, tripping current is cut in half, i.e. the RCCB must be tripped at 50% nominal residual current IN.
Set Parameter – 5 Times Nominal Current 12.4 Testing Residual Current Circuit Breakers in TN-S Systems Connection 5 times tripping current Note The following restrictions apply to the selection of tripping current multiples relative to nominal current: 500 mA: 1 ×, 2 × IN Start Measurement RCCBs can only be used in TN-S systems. An RCCB would not work in a TN-C system because PE is directly connected to the neutral conductor in the outlet (it does not bypass the RCCB).
12.5 Testing of RCD Protection in IT Systems with High Cable Capacitance (e.g. In Norway) The desired system type (TN/TT or IT) can be selected for RCD test type UIN (IN, ta), and for earthing measurement (RE). A probe is absolutely essential for measurement in IT systems, because touch voltage UIN which occurs in these systems cannot otherwise be measured. After selecting the IT system setting, connection with probe is selected automatically. Set Parameter – Select System Type 12.
Set Parameter – Type RCMB Set Parameter – Time to Trip Time to trip 300 mA 0.04 s 6 mA 10.0 s 60 mA 0.3 s Note The RCMB is tested with nominal residual currents of 6 to 300 mA.
13 Testing of Breaking Requirements for Overcurrent Protective Devices, Measurement of Loop Impedance and Determination of Short-Circuit Current (ZL-PE and ISC Functions) Testing of overcurrent protective devices includes visual inspection and measurement. Connection 2-Pole Adapter Measuring Method Loop impedance ZL-PE is measured and short-circuit current ISC is ascertained in order to determine if the breaking requirements for protective devices have been fulfilled.
13.1.1 Measurement with Positive Half-Waves (PROFITEST MTECH+, PROFITEST MXTRA only) Measurement by means of half-waves plus direct current makes it possible to measure loop impedance in systems which are equipped with RCCBs.
Special Case: Suppressing Display of the Limit Value The limit value cannot be ascertained. The inspector is prompted to evaluate the measured values himself, and to acknowledge or reject them with the help of the softkeys. Measurement passed: . key Measurement failed: key The measured value can only be saved after it has been evaluated. 13.
14 Measuring Supply Impedance (ZL-N Function) Measuring Method (internal line resistance measurement) Supply impedance ZL-N is measured by means of the same method used for loop impedance ZL-PE (see section 13 on page 54). However, the current loop is completed via neutral conductor N rather than protective conductor PE as is the case with loop impedance measurement. Select Measuring Function Polarity Selection ZL-N Semiautomatic Measurement See also section 10.9 regarding the AUTO parameter.
Start Measurement Display of UL-N (UN / fN) If the measured voltage value lies within a range of 10% of the respective nominal line voltage of 120, 230 or 400 V, the respectively corresponding nominal line voltage is displayed. In the case of measured values outside of the 10% tolerance, the actual measured value is displayed. Displaying the Fuse Table After measurement has been performed, permissible fuse types can be displayed by pressing the HELP key.
15 Earthing Resistance Measurement (Function RE) Earthing resistance RE is important for automatic shutdown in system segments. It must have a low value in order to assure that high short-circuit current flows and the system is shut down reliably by the RCCB in the event of a fault. Test Setup Earthing resistance (RE) is the sum of the earth electrode’s dissipation resistance and earth conductor resistance.
15.1 Earthing Resistance Measurement – Mains Powered 15.
15.
15.4 Earthing Resistance Measurement.
15.5 Earthing Resistance Measurement, Mains Powered – Measuring Earth Electrode Potential (UE Function) TES T IN P ter Wa Ri B E1 STR UM ENT ipe E2 This measurement is only possible with a probe (see section 15.4). Earth electrode potential UE is the voltage which occurs at the earth electrode between the earth electrode terminal and reference earth if a short-circuit occurs between the phase conductor and the earth electrode.
15.6 Earthing Resistance Measurement, Mains Powered – Selective Earthing Resistance Measurement with Current Clamp Sensor as Accessory As an alternative to the conventional measuring method, measurement can also be performed with a current clamp sensor.
Start Measurement In the event that you have changed the transformation ratio at the test instrument, a pop-up window appears indicating that this new setting also has to be entered to the connected current clamp sensor.
15.7 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – 3-Pole (PROFITEST MPRO & PROFITEST MXTRA only) 3-Wire Method Select Measuring Function PROFITEST MPRO / PROFITEST MXTRA RE Select Operating Mode The selected operating mode is displayed inversely: white battery icon against black background.
15.8 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – 4-Pole (PROFITEST MPRO & PROFITEST MXTRA only) 4-Wire Method Select Measuring Function PROFITEST MPRO / PROFITEST MXTRA RE Select Operating Mode The selected operating mode is displayed inversely: white battery icon against black background. Set Parameters ❏ ❏ ❏ ❏ The 4-wire method is used in the case of high cable resistance between the earth electrode and the instrument terminal.
zone, or the voltage or resistance curve is not horizontal at the point at which the probe has been inserted. I I d E H UE K d E H I K UE RE = distance from electrode to aux. electrode = earth electrode = auxiliary earth electrode = measuring current = neutral zone (reference earth) = earth potential = UE / I = earthing resistance = potential If a line parallel to the abscissa is drawn through inflection point S1, this line divides the resistance curve into two parts.
15.9 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Selective (4-pole) with Current Clamp Sensor and PRO-RE Measuring Adapter as Accessory (PROFITEST MPRO & PROFITEST MXTRA only) General Set Parameters at Tester PROFITEST MPRO /PROFITEST MXTRA ❏ Measuring range: 200 Note After switching to selective measurement, the AUTO measuring range is activated automatically if a measuring range of greater than 200 had been selected.
15.10 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Ground Loop Measurement (with current clamp sensor and transformer, and pro-re measuring adapter as accessory) (PROFITEST MPRO & PROFITEST MXTRA only) 2-Clamp Measuring Method Select Measuring Function PROFITEST MPRO / PROFITEST MXTRA RE Select Operating Mode The selected operating mode is displayed inversely: white battery icon against black background.
15.11 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Measurement of Soil Resistivity E (PROFITEST MPRO & PROFITEST MXTRA only) General Select Measuring Function H S ES E RE d d d Select Operating Mode The selected operating mode is displayed inversely: white battery icon against black background. Measurement of Soil Resistivity Set Parameters The determination of soil resistivity is necessary for the planning of earthing systems.
A number of typical soil resistivity values for various types of ground are summarized in the following table. Type of Soil Soil Resistivity E [m] 8 60 20 300 200 600 200 2000 300 8000 104 1010 Marshy ground Arable soil, loamy and clayey soil, moist gravel Moist sandy soil Dry sandy soil, dry gravel Rocky ground Rock Calculating Dissipation Resistance Formulas for calculating dissipation resistance for common types of earth electrodes are included in this table.
16 Measurement of Insulation Resistance Breakdown Current for Ramp Function ! Attention! UINS (UINS) Insulation resistance may only be measured at voltagefree devices. 16.
• After briefly pressing the ON/START ▼ key, specified test voltage UN is read out and insulation resistance RINS is measured. As soon as the measured value is stable (settling time may be several seconds in the case of high cable capacitance values), measurement is ended and the last measured values for RINS and UINS are displayed. U is the voltage which is measured at the test probes during and after testing.
Special Condition for Insulation Resistance Measurement ! Attention! Insulation resistance can only be measured at voltagefree objects. 16.2 Special Case: Earth Leakage Resistance (REISO) This measurement is performed in order to determine electrostatic discharge capacity for floor coverings in accordance with EN 1081. Select Measuring Function If measured insulation resistance is less than the selected limit value, the UL/RL LED lights up.
Start Measurement The limit value for earth leakage resistance from the relevant regulations applies.
17 Measuring Low-Value Resistance of up to 200 (Protective Conductor and Equipotential Bonding Conductor) According to the regulations, the measurement of low-value resistance at protective conductors, earth conductors or bonding conductors must be performed with (automatic) polarity reversal of the test voltage, or with current flow in one (+ pole to PE) and then the other direction (– pole to PE). ! Attention! Low-resistance may only be measured at voltage-free objects.
17.1 Measurement with Constant Test Current Start Measurement Measuring Low-Value Resistance Measurement cable and 2-pole measuring adapter resistance is compensated automatically thanks to the 4-wire method and thus doesn’t effect measurement results. However, if an extension cord is used its resistance must be measured and deducted from the measurement results.
17.2 Protective Conductor Resistance Measurement with Ramp Sequence – Measurement at PRCDs with Current-Monitored Protective Conductor using the PROFITEST PRCD Test Adapter as an Accessory ( PROFITEST MXTRA only) Application Connection Protective conductor current is monitored for certain types of PRCDs.
18 Measurement with Accessory Sensors 18.1 Current Measurement with Current Clamp Sensor Bias, leakage and circulating current up to 1 A, as well as leakage current up to 1000 A can be measured with the help of special current clamp sensors, which are connected to sockets 15 and 16. ! Set Parameters The transformation ratio parameter must be correspondingly set at the test instrument depending upon the respectively selected measuring range at the current clamp sensor.
19 Special Functions – EXTRA Switch Position Select the EXTRA Switch Position Selecting Special Functions The list of special functions is accessed by pressing the uppermost softkey. Select the desired function with the appropriate icon.
19.1 Voltage Drop Measurement (at ZLN) – U Function Significance and Display of U (per IEC 60364-6) Measurement Without OFFSET Voltage drop from the intersection of the distribution network and the consumer system to the point of connection of an electrical power consumer (electrical outlet or device connector terminals) should not exceed 4% of nominal line voltage.
19.2 Measuring the Impedance of Insulating Floors and Walls (standing surface insulation impedance) – ZST Function Start Measurement Measuring Method The instrument measures the impedance between a weighted metal plate and earth. Line voltage available at the measuring site is used as an alternating voltage source. The ZST equivalent circuit is considered a parallel circuit.
19.3 Testing Meter Startup with Earthing Contact Plug – kWh Function Energy consumption meters can be tested for correct startup with this function. The measured value cannot be saved to memory and included in the test report until it has been evaluated. Save measured value Connection L – N Earthing Contact Plug Special Case Startup of energy consumption meters which are connected between L and L or L and N can be tested with this function.
19.4 Leakage Current Measurement with PRO-AB Leakage Current Adapter as Accessory – IL Function (PROFITEST MXTRA only) Application Measuring Procedure Refer to the operating instructions for the PRO-AB leakage current measuring adapter regarding performance of the measurement.
19.5 Testing Insulation Monitoring Devices – IMD Function (PROFITEST MXTRA only) Application Insulation monitoring devices (IMDs) or earth fault detection systems (EDSs) are used in IT systems in order to monitor adherence to a minimum insulation resistance value as specified by DIN VDE 0100-410. They’re used in power supplies for which a single-pole earth fault may not result in failure of the power supply, for example in operating rooms or photovoltaic systems.
Measurement can be aborted by pressing the ON/START ▼ or ESC key. Retrieving Saved Measured Values The measured value cannot be saved to memory and included in the test report until it has been evaluated (see also section 9.4).
19.6 Residual Voltage Test – Ures Function (PROFITEST MXTRA only) Measuring Sequence – Long-Term Measurement Application The EN 60204 standard specifies that after switching supply power off, residual voltage must drop to a value of 60 V or less within 5 seconds at all accessible, active components of a machine to which a voltage of greater than 60 V is applied during operation.
19.7 Intelligent Ramp – ta+IFunction (PROFITEST MXTRA only) Start Touch Voltage Measurement Application The advantage of this measuring function in contrast to individual measurement of IN and tA is the simultaneous measurement of breaking time and breaking current by means of a test current which is increased in steps, during which the RCD is tripped only once.
19.8 Testing Residual Current Monitors – RCM Function ( PROFITEST MXTRA only) Measure Touch Voltage General Residual current monitors (RCMs) monitor residual current in electrical systems and display it continuously. As is also the case with residual current devices, external switching devices can be controlled in order to shut down supply power in the event that a specified residual current value is exceeded.
19.9 Checking the Operating Statuses of Electric Vehicles at Charging Stations per IEC 61851 ((PROFITEST MTECH+ & PROFITEST MXTRA) A charging station is a facility designed to charge electric vehicles in accordance with IEC 61851-1, and is equipped with essential elements including a plug connector, conductor protection, an RCD, a circuit breaker and a safety communication device (PWM). Depending on where it’s used, other function modules may be added, for example for mains connection and metering.
19.10 PRCD – Test Sequences for Documenting Fault Simulations at PRCDs with the PROFITEST PRCD Adapter (PROFITEST MXTRA only) The PROFITEST PRCD test adapter can be used in combination with the test instrument. ! Attention! Read the respective operating instructions before using the PROFITEST PRCD. Measurements with the PROFITEST PRCD connected to the test instrument: • Measurement of the PRCD’s insulation resistance using the test instrument’s RINS function (see section 16).
Overview of Test Sequences and their Test Steps Selection Examples, PRCD-S Test Sequence (single-phase) – 11 Test Steps PRCD-S, single-phase: 11 test steps Simulation of Interruption (steps 1 to 6) Reversed Conductor Simulation (step 7) PRCD-S, 3-phase: 18 test steps Simulation of PE to Phase (step 8) PRCD-K, single-phase: 5 test steps Contact ON Key at PRCD with Probe (step 10) Measurement of Protective Conductor Current with a Current Clamp Transformer (step 11) Gossen Metrawatt GmbH 93
Selection Examples, PRCD-S Test Sequence (3-phase) – 18 Test Steps Simulation of Interruption (steps 1 to 10) Semi-Automatic Changing of Fault Simulations (Statuses) As an alternative to manual status changing via the parameters menu for the respective PRCD selection at the test instrument (PRCD-S 1~, PRCD-K 1~ or PRCDS 3~), quick and convenient switching amongst the fault simulations is also possible. The AUTO status parameter has to be selected to this end.
20 Test Sequences (Automatic Test Sequences) – AUTO Function Operating Overview: Creating Test Sequences at a PC Select the utilized test instrument. Select AUTO Switch Position at the Test Instrument ! 1 2 3 4 AUTO 8 With the rotary switch in the AUTO position, all of the test sequences in the device are displayed. If there aren’t any test sequences in the instrument, NO DATA appears. 20.
! Attention! Test sequences which have been loaded to the test instrument are deleted when: – New test sequences are received from the PC – Selection lists are received from the PC – Backup data is restored to the test instrument – The user interface language is changed – The test instrument’s entire database is deleted – The test instrument is reset to its default settings – The firmware is updated For as long as the test sequences are being transferred, a progress bar is displayed at the PC and the illu
21 Maintenance 21.1 Test Instrument Firmware/Software The layout of the test instruments makes it possible to adapt device software to the latest standards and regulations. Beyond this, suggestions from customers result in continuous improvement of the test instrument software, as well as new functions. ! Attention! Severe damage to the instrument may occur if incorrect fuses are used. Only original fuses from Gossen Metrawatt GmbH may be used (order no. 3-578-285-01 / SIBA 7012540.3.
22 Contact, Support and Service Gossen Metrawatt GmbH can be reached directly and simply – we have a single number for everything! Whether you require support or training, or have an individual inquiry, we can answer all of your questions here: 23 CE Declaration The instrument fulfills all requirements of applicable EU directives and national regulations. We confirm this with the CE mark. The CE declaration is available upon request. A calibration certificate is included with the instrument.
24 Disposal and Environmental Protection Proper disposal makes an important contribution to the protection of our environment and the conservation of natural resources. ! Attention! Environmental Damage Improper disposal results in environmental damage. Follow the instructions concerning return and disposal included in this section. The following comments refer specifically to the legal situation in the Federal Republic of Germany.
25 Appendix 25.1 Tables for Determining Maximum and Minimum Display Values in Consideration of the Instrument’s Maximum Measuring and Intrinsic Uncertainties Table 1 Table 3 ZL-PE. (full-wave) / ZL-N ZL-PE. (+/- half-wave) () () Limit Max. Limit Max. Value Display Value Value Display Value 0.10 0.07 0.10 0.05 0.15 0.11 0.15 0.10 0.20 0.16 0.20 0.14 0.25 0.20 0.25 0.18 0.30 0.25 0.30 0.22 0.35 0.30 0.35 0.27 0.40 0.34 0.40 0.31 0.45 0.39 0.45 0.35 0.50 0.43 0.50 0.39 0.60 0.51 0.60 0.48 0.70 0.60 0.
Table 5 ZST k Limit Value 10 15 20 25 30 35 40 45 50 56 60 70 80 90 100 150 200 250 300 350 400 450 500 600 700 800 Min.
25.2 At which values should/must an RCD actually be tripped? Requirements for Residual Current Devices (RCD) General Requirements • Tripping must occur no later than upon occurrence of rated residual current (nominal differential current IN). and • Maximum time to trip may not be exceeded. Because the current waveform plays a significant role, the current waveform used by the test instrument is also important.
Tests for electrical systems include “visual inspection”, “testing” and “measurement”, and thus may only be conducted by experts with appropriate work experience. In the final analysis, the values from VDE 0664 are technically binding. Function Test The machine is operated with nominal voltage and tested for correct functioning, in particular with regard to safety functions. Special Tests 25.
Minimum Permissible Limit Values for Insulation Resistance Test Standard Test Voltage EN 50678 / DIN EN 50699 500 V PC I PC II PC III Heating 1 M 2 M 0.25 M 0.3 M * * With activated heating elements (where heating power > 3.5 kW and RISO < 0.3 M: leakage current measurement is required) Maximum Permissible Limit Values for Leakage Current in mA Test Standard EN 50678 / DIN EN 50699 IPE PC I: 3.5 1 mA/kW * IC IDI 0.5 PC I: 3.5 1 mA/kW * PC II: 0.
Gossen Metrawatt GmbH Prepared in Germany • Subject to change, errors excepted • PDF version available on the Internet All trademarks, registered trademarks, logos, product names and company names are the property of their respective owners. Gossen Metrawatt GmbH Südwestpark 15 90449 Nürnberg • Germany Phone: +49 911 8602-111 Fax: +49 911 8602-777 e-mail: info@gossenmetrawatt.com www.gossenmetrawatt.
