Sonel MZC-304 Operating Manual
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Sonel MZC-304 Operating Manual

Fault loop impedance meter
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  • Page 3 OPERATING MANUAL FAULT LOOP IMPEDANCE METER MZC-304 SONEL SA ul. Wokulskiego 11 58-100 Świdnica Version 2.02 02.02.2017...

  • Page 4: Table Of Contents

    CONTENTS SAFETY ........................4 MEASUREMENTS ....................5 .......... 5 URNING THE METER ON AND OFF DISPLAY BACKLIGHT ..........5 ELECTION OF GENERAL MEASUREMENT PARAMETERS ........... 6 EMEMBERING THE LAST MEASUREMENT RESULT ............. 6 EASUREMENT OF ALTERNATING VOLTAGE ............7 EASUREMENT OF VOLTAGE AND FREQUENCY PE ( .....
  • Page 5 Additional uncertainty according to IEC 61557-3 (Z) ........33 Additional uncertainty according to IEC 61557-4 (R ±200mA) ..... 33 9.2.2 EQUIPMENT ......................33 10.1 ..................33 TANDARD EQUIPMENT 10.2 ..................34 PTIONAL ACCESSORIES MANUFACTURER ....................36 OPERATING MANUAL MZC-304 version 2.02...

  • Page 6: Safety

    Safety The MZC-304 meter is designed for testing the protection against electric shock in the mains sys- tems. The meter is used to make measurements which results determine the electrical installation safety level. Consequently, in order to ensure safe operation and correct measurement results, ob- serve the following recommendations: ...

  • Page 7: Measurements

    Use the buttons to change the parameter value. The value or symbol to be changed is flashing. symbol indicates an active parameter, - symbol indicates an inactive one. Set the parameters according to the following algorithm: OPERATING MANUAL MZC-304 version 2.02...

  • Page 8: Remembering The Last Measurement Result

    The meter measures and displays alternating mains voltage in all measuring functions except R. This voltage is measured for the frequencies within the range of 45..65 Hz. The test leads should be connected as for a given measuring function. OPERATING MANUAL MZC-304 version 2.02...

  • Page 9: Measurement Of Voltage And Frequency

    - The person making a measurement must ensure that he/she is standing on a non-insulated floor du- ring the measurement; otherwise the result of the measurement may be incorrect. - The threshold value, which triggers the signal of exceeded allowable voltage on PE conduit, is ap- proximately 50 V. OPERATING MANUAL MZC-304 version 2.02...

  • Page 10: Measurement Of Fault Loop Parameters

    WS-05 and WS-01 and symbol for WS-07). Using cables terminated with banana plugs, before starting to measure, select the appro- priate length of the phase conductor, compatible with the length of cable used for measurement. OPERATING MANUAL MZC-304 version 2.02...

  • Page 11: Prospective Short-Circuit Current

    2.7.3 Measurement of fault loop parameters in the L-N and L-L circuits Turn on the meter. Turn the rotary switch to the Z position. Depending on needs, select cable length according to section 2.7.1. OPERATING MANUAL MZC-304 version 2.02...
  • Page 12 Make the measurement by pressing the START button. Read the main measu- rement result: fault loop impedance Z and the mains voltage at the ti- me of measurement. To read additional results, press the button. OPERATING MANUAL MZC-304 version 2.02...
  • Page 13 Additional information displayed by the meter The meter is ready for measurement. Voltage on terminals L and N is outside the measurable range. Voltage on terminals L and PE is outside the measurable range. Error during the measurement. OPERATING MANUAL MZC-304 version 2.02...

  • Page 14: Measurement Of Fault Loop Parameters In The L-Pe Circuit

    Depending on needs, select cable length according to section 2.7.1. Connect the test leads according to one of the drawings. Checking effectiveness of protection against electric shock of the enclosure in case of: a) TN b) TT. OPERATING MANUAL MZC-304 version 2.02...

  • Page 15: Measurement Of Short Circuit Loop Impedance In L-Pe Circuit Protected By A Residual Current Device (Rcd)

    2.7.5 Measurement of short circuit loop impedance in L-PE circuit protected by a residual current device (RCD) The MZC-304 enables the fault loop impedance measurements without altering the mains protec- ted by RCD's with the rated current of at least 30mA.

  • Page 16: Measurement Of Resistance To Earth

    Connection diagram for the instrument for such measurement in the TN-C, TN-S and TT systems is shown in the figure below. OPERATING MANUAL MZC-304 version 2.02...

  • Page 17: Low-Voltage Resistance Measurement

    Low-voltage resistance measurement The meter can be damaged if connected to the voltage exceeding 500V. OPERATING MANUAL MZC-304 version 2.02...

  • Page 18: Measurement Of Continuity Of Protective Conductors And Equipotential Bondings With 200 Ma Current

    Activate the measurement by pressing the START button. The measurement starts automatically for resistances lower than 30 Read the measurement result which is the arithme- tic mean of two measure- ments with 200mA current flowing in opposite direc- tions. OPERATING MANUAL MZC-304 version 2.02...

  • Page 19: Low-Current Measurement Of Resistance

    Measuring range is exceeded. 2.9.2 Low-current measurement of resistance Turn on the meter. Turn the rotary switch to the R position. The meter is ready for measurement. Connect test leads according to the dra- wing. OPERATING MANUAL MZC-304 version 2.02...

  • Page 20: Compensation Of Test Leads Resistance - Autozeroing

    Turn on the meter. Turn the rotary switch to the R or R posi- CONT tion Set the autozeroing according to the following algorithm. Short the test leads. Activate the autozeriong by pressing the START button. OPERATING MANUAL MZC-304 version 2.02...

  • Page 21: Memory Of Measurement Result Data

    (both conductors)! Memory of measurement result data MZC-304 meters are equipped with the memory that can store 10000 single measurement re- sults. The whole memory is divided into 10 memory banks, each of them containing 99 memory cells. Thanks to dynamic memory allocation, each of the memory cells can contain different quantity of sin- gle measurement results, depending on the needs.

  • Page 22: Storing The Measurement Result Data In The Memory

    Select the bank and cell number (see section 3.2) or leave the current number. Then press ENTER again. The following screen appears for a moment, accompanied by three short beeps, and then the meter returns to di- splay the last measurement result. OPERATING MANUAL MZC-304 version 2.02...

  • Page 23: Changing The Cell And Bank Number

    Changing the cell and bank number Press ENTER after completion of the measurement. The meter is in the memory sto- ring mode. The cell number is flas- hing. To change, use the buttons. OPERATING MANUAL MZC-304 version 2.02...

  • Page 24: Viewing Memory Data

    If the bank or cell number is flas- hing, its number can be changed. Use the buttons to view different types of results and their components. OPERATING MANUAL MZC-304 version 2.02...

  • Page 25: Deleting Memory Data

    Press ENTER to start deleting or ESC to abort. The deletion pro- gress is shown on the display as scrol- ling cell numbers. When deletion is complete, the meter generates three short beeps and sets the cell number to 1. OPERATING MANUAL MZC-304 version 2.02...

  • Page 26: Deleting The Whole Memory

    The deletion pro- gress is shown on the display as scrolling bank and cell numbers. When deletion is complete, the me- ter generates three short beeps and sets the cell num- ber to 1. OPERATING MANUAL MZC-304 version 2.02...

  • Page 27: Communication With A Computer

    In order to ensure the communication of the meter with a computer, Bluetooth module is required with an additional software. A program that may be used for this purpose is Sonel Reader. It allows users to read and display the measurement data stored in the meter memory. This program may be downloaded free from the manufacturer's website: www.sonel.pl.

  • Page 28: Troubleshooting

    Measurement errors No acclimatization Do not perform the mea- after moving the meter surements until the meter from cold environment reaches the ambient tem- to warm and humid perature (about 30 minu- OPERATING MANUAL MZC-304 version 2.02...

  • Page 29: Power Supply Of The Meter

    Measurements performed with an insufficient supply voltage feature additional errors which the user is unable to evaluate. Replacement of batteries The MZC-304 is powered by four LR6 batteries or AA size rechargeable batteries. They are placed in the compartment at the bottom of the enclosure. OPERATING MANUAL MZC-304 version 2.02...

  • Page 30: General Rules Of Using The Nickel Metal Hydride (N I -Mh) Batteries

    The battery temperature increase is a signal to stop the charging and is typical. In addition to faster temperature increase of a battery which will not be fully charged, charging at high ambient temperatures results, however, in a reduced life. OPERATING MANUAL MZC-304 version 2.02...

  • Page 31: Cleaning And Maintenance

    Used electronic equipment shall be sent to the collection point according to the Used Electric and Electronic Equipment Act. Before sending the instrument to the collection point, do not dismantle any parts by yourself. Observe local regulations on disposal of packagings and used batteries. OPERATING MANUAL MZC-304 version 2.02...

  • Page 32: Technical Specifications

    X Display range Resolution Measurement uncertainty 0.00..19.99  0.01  (5% + 5 digits) of Z value 20.0..199.9  0.1  (5% + 5 digits) of Z value  Calculated and displayed for ZS<20 OPERATING MANUAL MZC-304 version 2.02...
  • Page 33 (which is used for displaying). As the correct value, consider I current value, displayed by the meter or by firmware. OPERATING MANUAL MZC-304 version 2.02...
  • Page 34 ......development, design and manufacturing are ISO 9001 compliant s) the device meets the requirements of the IEC 61557 standard the product meets the EMC requirements (immunity for industrial environment) according to the following standards ............EN 61326-1:2006 and EN 61326-2-2:2006 OPERATING MANUAL MZC-304 version 2.02...

  • Page 35: Additional Information

    - the receiver for radio transmission OR-1 – WAADAUSBOR1  rigid hanger with a hook – WAPOZUCH1  carrying case for the meter and accessories – WAFUTM6  meter harness – WAPOZSZE4  SONEL CD  OPERATING MANUAL  warranty card OPERATING MANUAL MZC-304 version 2.02...

  • Page 36: Optional Accessories

     10m lead, red 5m lead, red WAADAWS01 WAPRZ020REBB   WS-01 adapter for triggering the measu- 20m lead, red rement with the UNI-Schuko plug WAADAWS07 WAKRORE20K02  crocodile, red WS-07 adapter for measuring Z OPERATING MANUAL MZC-304 version 2.02...
  • Page 37 WAPROKALK  AGT-63P adapter for three-phase soc- kets WAPROSCHEM  SONEL Calculations software for measu- rement calculations LSWPLMZC304  calibration certificate  SONEL Schematic software for creating drawings, electrical installation dia- grams OPERATING MANUAL MZC-304 version 2.02...

  • Page 38: Manufacturer

    SONEL S.A. ul. Wokulskiego 11 58-100 Świdnica Poland tel. +48 74 858 38 60 fax +48 74 858 38 09 E-mail: export@sonel.pl Web page: www.sonel.pl NOTE Service repairs must be performed solely by the manufacturer. OPERATING MANUAL MZC-304 version 2.02...

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