Sonel MIC-2501 Operating Manual
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Sonel MIC-2501 Operating Manual

Insulation resistance meter
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  • Page 3 OPERATING MANUAL INSULATION RESISTANCE METER MIC-2501 SONEL S.A. ul. Wokulskiego 11 58-100 Świdnica, Poland Version 1.04 24.02.2017...
  • Page 4 MIC-2501 meter is a modern, high quality, easy to use and safe measuring device. Please acquaint yourself with this manual in order to avoid measuring errors and prevent possible problems in operation of the meter. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 5: Table Of Contents

    TECHNICAL SPECIFICATIONS ............... 28 12.1 ......................28 ASIC DATA 12.2 ....................30 DDITIONAL DATA 12.2.1 Additional uncertainties according to IEC 61557-2 (R ) ......30 Additional uncertainties according to IEC 61557-4 (R ±200 mA) ....30 12.2.2 OPERATING MANUAL MIC-2501 version 1.04...
  • Page 6 ACCESSORIES ...................... 30 13.1 ..................30 TANDARD EQUIPMENT 13.2 ..................30 PTIONAL ACCESSORIES MANUFACTURER ....................31 LABORATORY SERVICES ................32 OPERATING MANUAL MIC-2501 version 1.04...

  • Page 7: Safety

    Safety MIC-2501 meter is designed for performing check tests of protection against electric shock in mains systems. The meter is used for making measurements and providing results to determine safety of electrical installations. Therefore, in order to provide conditions for correct operation and accuracy of obtained results, the following recommendations must be observed: ...

  • Page 8: Turning The Meter On And Activating Screen Backlight

    (horizon- tal lines – Auto-OFF function is inactive). Auto-OFF function is used to turn-off inac- tive meter after a preselected time. buttons to enter the screen with audio message settings: bEEP. OPERATING MANUAL MIC-2501 version 1.04...
  • Page 9 Press buttons to enter the set- ting the type of absorption coefficients: FAC. buttons to set Ab1, Ab2 ( ) parameters or PI, DAR ( ). buttons to enter the screen with software update: UPdt. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 10: Measurements

    Press SET/SEL button to select the measure- ment voltage U , time used for calculating the absorption coefficients t1, t2, t3 and the inter- val between the parameter points ChA. buttons to set U value and confirm it by pressing ENTER OPERATING MANUAL MIC-2501 version 1.04...
  • Page 11 ChA of recording Defining ChA interval will enable the user, using Sonel Reader software, to plot the resistance chart and current chart using the data obtained from the performed measurement (see example below).
  • Page 12 The measurement will end after the longest pre-set time (t1, t2 or t3) runs out. To interrupt or terminate the measurement earlier in the absence OPERATING MANUAL MIC-2501 version 1.04...
  • Page 13 (even when the measurement was inter- rupted/stopped e.g. after 60 seconds). When the meter switched into standby mode, the meas- urement result may be re- called by pressing ENTER. OPERATING MANUAL MIC-2501 version 1.04...
  • Page 14 Note: During measurements of insulation resistance, dangerous voltage of approx. 2.5kV occurs at the ends of measurement wires of MIC-2501 meter. It is forbidden to disconnect test leads before the measurement is completed. Failure to obey the above instruction will lead to high voltage electric shock and make it impossible to discharge the tested object.

  • Page 15: Three-Lead Measurement

    In order to eliminate the influence of surface resistance in transformers, cables, etc. the three- lead measurement is used. For example:  at the measurement of inter-winding resistance of a transformer, G socket of the meter should be connected to the transformer tank; OPERATING MANUAL MIC-2501 version 1.04...
  • Page 16 Metal foil wrapped around the conductor insulation Conductor The same shall apply when measuring the resistance between two conductors of the cable, at- taching to G terminal other conductors that do not take part in the measurement. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 17: Low-Voltage Measurement Of Resistance

    Connect the meter to the tested object. Trigger the measurement by pressing the START button. Read out the result. Press START push-button in order to start next measure- ment without disconnecting test leads from the object. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 18: Compensation Of Test Leads Resistance

    (compensation of test leads is turned off). Return to R measurement screen by pressing CONT SET/SEL OPERATING MANUAL MIC-2501 version 1.04...

  • Page 19: Voltage Measurement

    When AC voltage is detected, the device will display ~" symbol " ("wave") and when DC voltage is detected, the device will display symbol " " for negative polarity or "nil" for positive polarity. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 20: Memory Of Measurement Results

    Memory of measurement results MIC-2501 meters have memory divided into 10 banks of 99 cells. Thanks to dynamic memory allo- cation, each of the memory cells can contain different quantity of single measurement results, depending on the needs. Optimal use of the memory can be ensured in this way. Each measurement result can be stored in a memory cell marked with a selected number and in a selected memory bank.
  • Page 21 Press ESC to return to the measurement screen with- out saving. If you try to store data in an occupied memory cell, the following warn- ing message will appear: OPERATING MANUAL MIC-2501 version 1.04...

  • Page 22: Viewing Memory Data

    To change the cell number or bank number: When the cell number is flashing, use buttons to set the desired number of the cell. Press SET/SEL button – bank number is flashing. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 23: Deleting Memory Data

    4.2. Set the cell number as "--" (before "01")..and the cell number will change into "--", then symbol will be displayed to indicate the readiness for delet- ing. Press ENTER button. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 24: Deleting The Whole Memory

    Cancel by pressing ESC. The contents of the bank has been deleted. 5.3.2 Deleting the whole memory << >> to browse the memory: MEM (LED is on). Set the bank number as "--" (before "01")... OPERATING MANUAL MIC-2501 version 1.04...
  • Page 25 Press ENTER button. sym- bols appear, asking you to confirm dele- tion. Press ENTER again. After deleting the memory, the meter beeps three times. The entire contents of the memory has been deleted. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 26: Data Transmission

    The software may be used for many devices manufactured by SONEL S.A. which are equipped with the USB interface or other (depending on the selected device).

  • Page 27: Power Supply

    8.2 Charging the battery pack CAUTION! MIC-2501 meter is powered from SONEL battery pack, which includes NiMH 9.6 V batteries and it may be replaced only by the manufacturer's service department. Battery charger is installed inside the meter and cooperates only with the manufacturer’s recharge- able battery pack.

  • Page 28: General Principles Regarding Using Ni-Mh Rechargeable Batteries

    However charging at a high ambient temperature apart from reducing batteries' lifetime causes an accelerated increase of their temperature and the result is that the batteries are not charged to their full capacity. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 29: Cleaning And Maintenance

    Worn-out electronic equipment should be sent to a collection point in accordance with the law of waste electrical and electronic equipment. Before the equipment is sent to a collection point, do not dismantle any elements. Observe local regulations concerning disposal of packages, waste batteries and accumulators. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 30: Technical Specifications

    ISOnom where: – minimum insulation resistance measured without limiting the converter current ISOmin – nominal test voltage ISOnom – nominal inverter current (1 mA) ISOnom  = 1.4 mA ±15 % Max. short-circuit current: I OPERATING MANUAL MIC-2501 version 1.04...
  • Page 31 ............ IV 600 V (III 1000 V) acc. to EN 61010-1 c) degree of housing protection acc. to EN 60529................. IP65 d) power supply of the meter........... SONEL battery pack, NiMH 9.6 V 2 Ah e) Battery charging time ..................usually 4 h, max. 10 h parameters of the external power supply adapter ........

  • Page 32: Additional Data

    5 m shielded cable, black, cat. IV 1000 V 10 m shielded cable, black, cat. IV 1000 V WAPRZ005REBB5K WAPRZ010REBB5K   5kV cable, 5m, red, with banana plugs 5kV cable, 10 m, red, with banana plugs WAPRZ005BUBB5K WAPRZ010BUBB5K OPERATING MANUAL MIC-2501 version 1.04...

  • Page 33: Manufacturer

    SONEL S.A. ul. Wokulskiego 11 58-100 Świdnica Poland tel. +48 74 858 38 60 fax +64 74 858 38 09 E-mail: export@sonel.pl Web page: www.sonel.pl Note: Service repairs must be performed only by the manufacturer. OPERATING MANUAL MIC-2501 version 1.04...

  • Page 34: Laboratory Services

    15 Laboratory services Research and Calibration Laboratory of SONEL SA offers calibration of the following instru- ments used for electrical/non-electrical measurements: meters for electrical protective measurements: insulation resistance, impedance and re- sistance of short-circuit loops, earthing resistances and earth resistivity, RCD parameters...

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