HT GEO416 User Manual
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HT GEO416 User Manual

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 Copyright HT ITALIA 2012
Release EN 2.00 - 04/10/2012

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Summary of Contents for HT GEO416

  • Page 1  Copyright HT ITALIA 2012 Release EN 2.00 - 04/10/2012...

  • Page 3: Table Of Contents

      9.2.  Environment ........................22  9.2.1. Operating environmental conditions ..................22     9.3.  Accessories ........................22  9.3.1. Standard and optional accessories GEO416 ................. 22     9.3.2. Standard accessories GEO416GS ..................22     SERVICE ........................23    ...

  • Page 4: Safety Precautions And Procedures

    GEO416 - GEO416GS 1. SAFETY PRECAUTIONS AND PROCEDURES The instrument was designed in compliance with standards IEC/EN61557 and IEC/EN61010-1 relative to electronic equipment. CAUTION For your own safety and to avoid damaging the instrument you are recommended to follow the procedures described in this manual and read...

  • Page 5: During Use

    GEO416 - GEO416GS 1.2. DURING USE You are recommended to read carefully the following instructions: CAUTION Failure to comply with warnings and instructions may damage the instrument and/or its components as well as injure the operator. If the low battery symbol is displayed during use interrupt testing and replace batteries following the procedure described in §...

  • Page 6: General Description

    GEO416 - GEO416GS 2. GENERAL DESCRIPTION This instrument will grant you accurate and reliable measurements provided that is used according to the instructions given in this manual. You will enjoy the highest safety thanks to a development of newest conception assuring double insulation and over voltage category III.

  • Page 7: Working Instructions

    GEO416 - GEO416GS 4. WORKING INSTRUCTIONS 4.1. INSTRUMENT DESCRIPTION CAPTION: 1. Inputs 2. ENTER/,,,keys 3. ESC/ 4. RCL/CLR key 5. Display 6. GO key 7. SAVE key 8. ON/OFF key Fig. 1: Instrument’s description ENTER key to select measuring mode...

  • Page 8: Switching On

    GEO416 - GEO416GS 4.2.1. Switching on When switching on the instrument a brief tone is audible along with display of all segments for about one second. Subsequently the last firmware version as well as the last selected measuring mode are displayed before switching off.

  • Page 9: Earth 3W - 3 Wire Earth Resistance Measurement

    GEO416 - GEO416GS 4.3. EARTH 3W – 3 WIRE EARTH RESISTANCE MEASUREMENT The measurement is carried out in compliance with standards IEC 781, VDE 0413, IEC/EN61557-5. CAUTION  The instrument can be used for voltage and current measurements on installations with over voltage category CAT III 240V to earth and maximum voltage of 415V between inputs.
  • Page 10 GEO416 - GEO416GS Extend, if necessary, the blue and red measuring cables separately using cables with proper section. Adding any extension does not require calibration and does not affect the measured earth resistance value Drive the auxiliary rods into the ground keeping to the distance instructions provided by the standards (§...

  • Page 11: Earth 2W - 2 Wire Earth Resistance Measurement

    GEO416 - GEO416GS 4.4. EARTH 2W – 2 WIRE EARTH RESISTANCE MEASUREMENT CAUTION  The instrument can be used for voltage and current measurements on installations with over voltage category equal to CAT III 240V to earth and maximum voltage of 415V between inputs. Do not connect the instrument to installations whose voltages exceed the limits indicated in this manual.
  • Page 12 GEO416 - GEO416GS CAUTION If you wish to effect the measurement using the neutral and earth conductors of an ordinary socket, you may accidentally connect to phase; in this case the detected voltage as well as the warning symbol for wrong entering will be...
  • Page 13 GEO416 - GEO416GS While the instrument is measuring a screen similar to the one beside appears where the instrument’s input interfering voltage value is displayed. When the message is displayed Input interfering voltage do not disconnect or touch the test...

  • Page 14: Ground Resistivity Measurement

    GEO416 - GEO416GS 4.5.  - GROUND RESISTIVITY MEASUREMENT The ground resistivity value is an essential parameter to calculate the resistance value of the earth rods to be used for the earth installation’s construction. The measurement is effected according to standards IEC 781, VDE 0413, IEC/EN61557-5.
  • Page 15 GEO416 - GEO416GS A screen similar to the one beside appears where both the input interfering voltage of the instrument and the rods’ distance value are displayed Value of input interfering voltage and rods' distance Should you need to modify the rods’...
  • Page 16 GEO416 - GEO416GS 11. While the instrument is measuring a screen similar to the one beside appears where the instrument’s input interfering voltage value distance set between auxiliary rods are displayed. When the message Value of input interfering voltage and rods' distance...

  • Page 17: Anomalous Measuring Applications

    GEO416 - GEO416GS 4.5.1. Anomalous measuring applications When starting a measurement the instrument checks the continuity of Volt circuit’s resistance too high measuring cables. If the volt circuit (red cable S and green cable ES) is interrupted or its resistance value is...
  • Page 18 GEO416 - GEO416GS When starting a measurement, if the red cable (connected to S terminal) and the green cable (connected to ES terminal) are reversed, the instrument do not perform the test, emits a long green cables reversed sound tone and displays the screen beside Example under ρ...

  • Page 19: Management Of Stored Data

    GEO416 - GEO416GS 5. MANAGEMENT OF STORED DATA 5.1. HOW TO SAVE A MEASUREMENT After taking a measurement No. of memory location press SAVE key, the instrument where the measurement displays a screen similar to the has to be saved...

  • Page 20: How To Recall A Measurement

    GEO416 - GEO416GS Press key, instrument displays a screen similar to the one beside First last memory location to be cancelled and confirmation required Alternatively: Confirm cancellation of measurements pressing ENTER key, the instrument emits a double sound tone confirming cancellation of the...

  • Page 21: Instrument Reset

    GEO416 - GEO416GS 6. INSTRUMENT RESET CAUTION BEFORE CARRYING OUT THE INSTRUMENT’S RESET SAVE ALL DATA RELATIVE TO THE MEASUREMENTS EFFECTED BY DOWNLOADING THEM TO A PC When the instrument is off press the RCL/CLR key Keeping down the RCL/CLR key, press the switch on key.

  • Page 22: Maintenance

    GEO416 - GEO416GS 8. MAINTENANCE 8.1. GENERAL This 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. Do not use this tester under unfavorable conditions of high temperature or humidity. Do not expose to direct sunlight.

  • Page 23: Technical Specifications

    GEO416 - GEO416GS 9. TECHNICAL SPECIFICATIONS 9.1. TECHNICAL FEATURES Accuracy indicated as [%reading + (number dgts * resolution)] at 23 ± 5°C, <80%RH 3- and 2-wire earth resistance measurement - EARTH 3W and EARTH 2W Measurement range (**) Resolution [] Accuracy (*) Reading []...

  • Page 24: Reference Standards

    This instrument complies with the requirements of the European Low Voltage Directive 2006/95/CE (LVD) and EMC Directive 2004/108/CE 9.3. ACCESSORIES 9.3.1. Standard and optional accessories GEO416 See enclosed packing list 9.3.2. Standard accessories GEO416GS  Set of 4 cables, banana-banana, L=1m KIT416CV ...

  • Page 25: Service

    GEO416 - GEO416GS SERVICE 10.1. WARRANTY TERMS This instrument is guaranteed against material or manufacturing defects, in accordance with general sales conditions. During the warranty period the manufacturer reserves the right to decide either to repair or replace the product.

  • Page 26: Practical Reports For Electrical Tests

    GEO416 - GEO416GS PRACTICAL REPORTS FOR ELECTRICAL TESTS 11.1. EARTH RESISTANCE IN TT SYSTEMS The test is aimed at checking that the RCD is coordinated with the earth resistance value. It is not possible to assume an earth resistance value as reference limit when controlling the test result, while it is necessary to check every time that the co-ordination complies with the requirements of the Standards.

  • Page 27: Earth Resistance, Voltaamperemetric Method

    GEO416 - GEO416GS 11.2. EARTH RESISTANCE, VOLTAAMPEREMETRIC METHOD 11.2.1. Creating cables extensions If the length of the supplied cables isn’t suitable for the plant under test, You can create your own extensions without influencing the instrument’s accuracy. For your own safety and to avoid damaging the instrument you are recommended to respect the following indications: ...

  • Page 28: Ground Resistivity

    GEO416 - GEO416GS Fig. 8: Earth resistance measurement – large-sized earth rods 11.3. GROUND RESISTIVITY This test aims at analyzing the resistivity value of the ground in order to define the type of rods to be used when designing the installation. For the resistivity test correct or not correct values do not exist.

  • Page 29: Approximate Evaluation Of Intentional Rods' Contribution

    GEO416 - GEO416GS The measuring method allows defining the specific resistivity of a ground layer up to the depth corresponding approximately to the distance “a” between the rods. If you increase the distance “a” you can reach deeper ground layers and check the ground homogeneity.
  • Page 30 NOTE ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________...
  • Page 32 Via della Boaria 40 48018 – Faenza (RA) - Italy Tel: +39-0546-621002 (4 linee r.a.) Fax: +39-0546-621144 Email: ht@htitalia.it Web :www.ht-instruments.com...

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Geo416gs

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