HT GSC60 User Manual
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HT GSC60 User Manual

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Copyright HT ITALIA 2017
Release EN 1.02 - 16/05/2017

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Summary of Contents for HT GSC60

  • Page 1  Copyright HT ITALIA 2017 Release EN 1.02 - 16/05/2017...

  • Page 3: Table Of Contents

    GSC60 Table of contents: PRECAUTIONS AND SAFETY MEASURES ............... 3     1.1.  Preliminary instructions ..................... 3  1.2.  During use ......................... 4  1.3.  After use ..........................4  1.4.  Definition of measurement (overvoltage) category ............4  GENERAL DESCRIPTION ................... 5  ...
  • Page 4 GSC60 6.7.4. Anomalous situations in 3-wire and 2-wire earth measurements .......... 74     6.8.  AUX: Measure and recording of ambient parameters ............. 75  6.9.  ∆V%: Voltage drop of main lines ..................78  6.9.1. Anomalous situations ......................82    ...

  • Page 5: Precautions And Safety Measures

    (such as construction sites, swimming pools, etc.) and higher than 50V in normal environments, since a risk of electrical shock exists.  Only use original HT accessories. The following symbols are used in this manual: CAUTION: observe the instructions given in this manual; improper use could damage the instrument, its components or create dangerous situations for the operator.

  • Page 6: During Use

    GSC60 1.2. DURING USE Please carefully read the following recommendations and instructions: CAUTION Failure to comply with the caution notes and/or instructions may damage the instrument and/or its components or be a source of danger for the operator.  Before changing function, disconnect the test leads from the circuit under test.

  • Page 7: General Description

    GSC60 2. GENERAL DESCRIPTION 2.1. FOREWORD The instrument is equipped with a TFT color LCD display, with capacitive "touch-screen" that can be handled simply with the touch of a finger by the user and is structured with an icon-based menu allowing the direct selection of measurement functions for quick and intuitive use.

  • Page 8: Preparation For Use

    GSC60 3. PREPARATION FOR USE 3.1. INITIAL CHECKS Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged. However, we recommend checking it to detect any damage possibly suffered during transport.

  • Page 9: Nomenclature

    GSC60 4. NOMENCLATURE 4.1. INSTRUMENT DESCRIPTION CAPTION: 1. Inputs 2. LCD Touch screen display 3. Function keys F1, F2, F3, F4 4. ,, ,  / ENTER keys 5. Compartment of the connector for optical cable/USB port 6. ESC key 7.

  • Page 10: Keyboard Description

    INITIAL SCREEN When switching on the instrument, the initial screen appears for a few seconds. It shows:  The HT manufacturer's logo  The instrument model  The Firmware version (LCD and CPU)  The serial number (SN:) of the instrument ...

  • Page 11: General Menu

    GSC60 5. GENERAL MENU Pressing the ENTER key in any condition of the instrument allows to go back to the general menu in which internal parameters may be set, the saved measures can be displayed and the desired measuring function may be selected.

  • Page 12: Reference Country

    GSC60 5.1.2. Reference country Touch the icon to select the reference country. This choice have influence on the LOOP and EARTH measurements (see § 6.4 and § 6.7) as shown in Table 1. The screen to the side appears on the display.

  • Page 13: Operator Name Entry

    GSC60 5.1.5. Operator name entry Touch the icon to enter the name of the operator that will be displayed in the header of each measurement downloaded to PC. The screen to the side appears on the display.  Set the desired name using the virtual keyboard (max 12 characters).

  • Page 14: Operating Instructions

    GSC60 6. OPERATING INSTRUCTIONS 6.1. RPE: CONTINUITY OF PROTECTIVE CONDUCTORS This function is performed in compliance with standards IEC/EN61557-4 and allows measuring the resistance of protective and equipotential conductors. CAUTION  The instrument can be used for measurements on installations with overvoltage category CAT IV 300V to earth and max 600V between inputs.
  • Page 15 GSC60 Touch the icon. The screen to the side appears on the display. The instrument automatically carries out the test for the presence of voltage between the inputs (shown on the display) and blocks the test in case of voltage higher than 10V Touch the “AUTO”...
  • Page 16 GSC60 Perform, if necessary, the compensation of the measuring leads resistance by connecting the cables or the remote lead as shown in Fig. 7. Fig. 7: Compensation of single cables and remote lead resistance Touch the icon to activate the measurement. After a few seconds, the instrument provides the screen to the side if the operation is successful (Rcables ...

  • Page 17: Anomalous Situations

    GSC60 At the end of the test, if the value of the measured resistance is higher than the set limit, the screen to the side is shown on the display. The value is shown in red and the symbol indicates the negative result of the measurement.

  • Page 18: M: Measurement Of Insulation Resistance

    GSC60 6.2. M: MEASUREMENT OF INSULATION RESISTANCE This function is performed in compliance with standards IEC/EN61557-2 and allows measuring the insulation resistance between the active conductors and between each active conductor and the earth. CAUTION  The instrument can be used for measurements on installations with overvoltage category CAT IV 300V to earth and max 600V between inputs.
  • Page 19 GSC60 Touch the icon. The screen to the side appears on the display. The instrument automatically carries out the test for the presence of voltage between the inputs (shown on the display) and blocks the test in case of voltage higher than approx. 10V Touch the “AUTO”...
  • Page 20 GSC60 CAUTION  Disconnect any cable not strictly involved in measurement and especially check that no cable is connected to In1 input.  Before connecting the test leads, make sure that there is no voltage at the ends of the conductors to be tested.

  • Page 21: Anomalous Situations

    GSC60 6.2.1. Anomalous situations If the instrument measures a resistance higher than the set limit value but for which it is not able to generate the rated voltage, the screen to the side is displayed. symbol is shown on the display and the values of the real test voltage are indicated in red.

  • Page 22: Rcd: Test On Differential Switches

    GSC60 6.3. RCD: TEST ON DIFFERENTIAL SWITCHES This function is performed in compliance with standard IEC/EN61557-6 and allows measuring the tripping time and current of molded case differential switches of type A ( AC ( ) and B ( ), being General (G), Selective (S) and Delayed ( ). The instrument allows performing tests on earth leakage relay RCDs with currents up to 10A (with optional accessory RCDX10).
  • Page 23 GSC60 Fig. 13: Connection for a 400V + N + PE by means of single cables and remote lead Fig. 14: Connection for a 400V + N (no PE), single cables, remote lead (no RCD B type) Fig. 15: Connection for a 400V + PE (no N) single cables, remote lead (no RCD B type) Fig.
  • Page 24 GSC60 Select the options “TN, TT or “IT”, “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see § 5.1.4). Touch the icon. The screen to the side appears on the display. Touch the icon to the left to set the RCD operating mode.
  • Page 25 GSC60 Touch the third icon at the bottom of display and select the desired type of test among the options::  x ½  Manual with multiplier ½ Idn  x 1  Manual with multiplier 1Idn  x 2  Manual with multiplier 2Idn ...

  • Page 26: Auto Mode

    GSC60 6.3.1. AUTO mode 9. Press the GO/STOP key for 2s on the instrument or the START key on the remote lead. The instrument will start the measurement. The screen to the side is shown on the display when icon indicates the performance of the test.

  • Page 27: X1, X2, X5 Modes

    GSC60 6.3.2. x½, x1, x2, x5 modes 9. Press the GO/STOP key for 2s on the instrument or the START key on the remote lead. The instrument will start the measurement. The screen to the side (concerning multiplier x1) is...

  • Page 28: Mode

    GSC60 6.3.4. Mode The standard defines, for molded case type STD, the tripping times for RCDs at nominal current. The mode is used to detect the minimum tripping current (which could also be lower than the nominal voltage). 9. Press the GO/STOP key for 2s on the instrument or the START key on the remote lead.

  • Page 29: Test On Earth Leakage Relay Rcd

    GSC60 6.3.5. Test on earth leakage relay RCD The instrument allows performing tests on earth leakage relay RCD with currents up to 10A (with optional accessory RCDX10) 8. Connect the instrument and the optional accessory RCDX10 to the installation (see Fig.

  • Page 30: Anomalous Situations

    GSC60 6.3.6. Anomalous situations 1. If the voltage between inputs B1 and B4 and inputs B1 and B3 is higher than 265V, the instrument provides the warning screen shown to the side and blocks the execution of the tests. 2. If the voltage between inputs B1 and B4 and inputs B1...
  • Page 31 GSC60 6. If the instrument detects that the phase and neutral leads are inverted, it does not carry out the test and a screen similar to the one reported to the side is displayed. Rotate the shuko plug or check the connection of measuring cables.
  • Page 32 GSC60 11 If the instrument detects a voltage Vn-pe > 50V (or the analogue Vn-pe >25V) it provides the warning screen shown to the side and blocks the test for safety reasons. Check the PE conductor and earth plant efficiency...

  • Page 33: Loop: Line Impedance/Loop And Overall Earth Resistance

    GSC60 6.4. LOOP: LINE IMPEDANCE/LOOP AND OVERALL EARTH RESISTANCE This function is performed in compliance with standard IEC/EN61557-3 and allows measuring the line impedance, the fault loop impedance and the prospective short-circuit current. CAUTION  The instrument can be used for measurements on installations with overvoltage category CAT IV 300V to earth and max 600V between inputs.
  • Page 34 GSC60 Fig. 18: P-N/P-PE measure for single-phase/two-phase 230V with cables and remote lead Fig. 19: P-N/P-PE test for 400V+N+PE by means of single cables and remote lead Fig. 20: P-P test for 400V+N+PE three-phase systems Fig. 21: P-PE/P-N test for 400V + PE (no N) by means of single cables and remote lead Fig.

  • Page 35: Test Types

    GSC60 6.4.1. Test types The protection of electrical lines is the essential part of a project so as to guarantee the correct functionality and avoid damages to persons or property. To this purpose, the safety guidelines impose on electrical designers also to design the electrical installation in order to reach: 1.
  • Page 36 GSC60 The following table summarizes the possible measures executable depending on the type of system (TT, TN and IT), of selected modes and the relationships that define limit values Mode Condition x OK outcome Condition x OK outcome Condition x OK outcome...

  • Page 37: Std Mode - Generic Test

    GSC60 6.4.2. STD Mode – Generic test This mode performs the impedance measurement and the calculation of prospective short circuit current without applying any evaluation. Therefore, at the end of the test, no outcome is given by the instrument. 1. Select the options “TN, TT or “IT”, “25 or 50V”, “50Hz or 60Hz”...
  • Page 38 GSC60 6. The value of the assumed short-circuit current (Isc) is shown in the upper part of the display, while the Line/Loop Z impedance is shown at the bottom of the display. Press the SAVE button or touch the icon to save the measurement (see §...

  • Page 39: Mode Ka - Verify Of Breaking Capacity Of Protection Device

    GSC60 6.4.3. Mode kA – Verify of breaking capacity of protection device 1. Select the options “TN, TT or “IT”, “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see § 5.1.4).
  • Page 40 GSC60 5. Press the GO/STOP key for 2s or the START key on the remote lead. During this whole stage, do not disconnect the measuring leads of the instrument from the system under test. In case of positive outcome, the screen to the side is shown by the instrument.

  • Page 41: Mode I T - Verify Of Protection Against Short-Circuit

    GSC60 6.4.4. Mode I t – Verify of protection against short-circuit CAUTION The verify of conductor protection against the thermic effect of short-circuit is performed under the following conditions:  Ambient temperature of 25°C  Presence of external insulation (not live conductor) ...
  • Page 42 GSC60 Touch the icon to zero the value in the In field and use the virtual keyboard to set the value of the RCD rated current within the values allowed by the instrument. The following selections are available on the instrument ...
  • Page 43 GSC60 6. If possible, disconnect all loads connected downstream of the measured point, as the impedance of these users could distort the test results. Connect the shuko plug, the alligator clips or the remote lead to the electrical mains according to Fig. 17, Fig. 18, Fig. 19 and Fig.

  • Page 44: Mode - Verify Of Protection Coordination

    GSC60 6.4.5. Mode - Verify of protection coordination 1. Select the reference country (see § 5.1.2), the options “TN, TT or “IT”, “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see § 5.1.4). NOTE: for “USA” country...
  • Page 45 GSC60 5. Move the slide bar reference by selecting the protection tripping time between the options: 0.1s, 0.2s, 0.4s, 5s. Confirm the choice by going back to the initial measurement screen. 6. If possible, disconnect all loads connected downstream of the measured point, as the impedance of these users could distort the test results.

  • Page 46: Mode - Verify Of Protection Coordination - Norvay Country

    GSC60 6.4.6. Mode - Verify of protection coordination – Norvay country 1. Select the “Norvay” country (see § 5.1.2), the options “TN, or “IT”, “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see §...
  • Page 47 GSC60 5. Move the slide bar reference by selecting the protection tripping time between the options: 0.1s, 0.2s, 0.4s, 5s. Confirm the choice by going back to the initial measurement screen. Touch the fourth icon to set the calculation coefficient of the short circuit current Isc.

  • Page 48: Verify Of Protection Against Indirect Contacts (Tn System)

    GSC60 9. In case of negative result (minimum short-circuit current NOT interrupted by the protection device within the time indicated by the performed selections), the screen to the side is displayed by the instrument. Note the presence of the measurement result highlighted in red.
  • Page 49 GSC60 5. Move the slide bar reference by selecting the protection tripping time between the options: 0.1s, 0.2s, 0.4s, 5s. Confirm the choice by going back to the initial measurement screen 6. If possible, disconnect all loads connected downstream of the measured point, as the impedance of these users could distort the test results.

  • Page 50: Verify Of Protection Against Indirect Contacts (It Systems)

    GSC60 6.4.8. Verify of protection against indirect contacts (IT systems) 1. Select the options "IT", “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see § 5.1.4). Touch the icon. The screen to the side appears on the display.

  • Page 51: Verify Of Protection Against Indirect Contacts (Tt Systems)

    GSC60 6.4.9. Verify of protection against indirect contacts (TT systems) 1. Select the options "TT", “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see § 5.1.4). Touch the icon. The screen to the side appears on the display.
  • Page 52 GSC60 5. Press the GO/STOP key for 2s or the START key on the remote lead. During this whole stage, do not disconnect the measuring leads of the instrument from the system under test. In case of positive result (overall earth resistance lower...

  • Page 53: Impedance Measurement By Means Of The Accessory Imp57

    GSC60 6.4.10. Impedance measurement by means of the accessory IMP57 Impedance measurements performed with the optional accessory IMP57 involve its connection to the instrument via optical connector through the optical cable/RS-232 C2001 supplied with same accessory. The IMP57 must be directly powered by the mains on which measurements are performed.
  • Page 54 GSC60 4. The symbol indicates the correct connection and recognition of the IMP57 by the instrument. Check the green STATUS LED lighting on the IMP57. The value of the voltage between the measurement points is shown in the upper part of the display.

  • Page 55: Anomalous Situations

    GSC60 6.4.11. Anomalous situations 1. If the instrument detects an L-N or L-PE voltage higher than the maximum limit (265V), it does not carry out the test and displays a screen like the one to the side. Check the connection of measuring cables.
  • Page 56 GSC60 6. If the instrument detects that the phase and neutral leads are inverted, it does not carry out the test and a screen similar to the one reported to the side is displayed. Rotate the shuko plug or check the connection of measuring cables.

  • Page 57: Seq: Phase Sequence And Phase Concordance Test

    GSC60 6.5. SEQ: PHASE SEQUENCE AND PHASE CONCORDANCE TEST This function is performed in compliance with standards IEC/EN61557-7 and allows testing the phase sequence and concordance by direct contact with live parts (not on cables with insulating sheath). The following operating modes are available: CAUTION ...
  • Page 58 GSC60 2. Move the slide bar reference in the position "1T" for the selection of the test with 1 terminal or in the position "2T" for the selection of the test with 2 terminals. Confirm the choice by going back to the following initial measurement screen.
  • Page 59 GSC60 7. The symbol for the tip on phase L2 and the hourglass indicating the status of pending recognition of a voltage higher than the maximum allowed. Once the correct voltage recognized, the symbol is shown on the display. 8. At the end of the test, if the detected phase sequence is correct, the instrument displays a screen like the one shown to the side (result "1-2-3").

  • Page 60: Anomalous Situations

    GSC60 6.5.1. Anomalous situations 1. If between the test start and the acquisition of the first voltage or between the acquisition of the first and second voltage, a time longer than around 10s has elapsed, the instrument displays a screen like the one to the side.

  • Page 61: Leakage: Leakage Current Measurement And Recording

    GSC60 6.6. LEAKAGE: LEAKAGE CURRENT MEASUREMENT AND RECORDING This function allows measuring and recording the leakage current in single-phase or three- phase systems by means of the optional accessory HT96U clamp. Fig. 25: Indirect measurement of leakage current in three-phase systems Fig.
  • Page 62 GSC60 3. Move the left slide bar cursor in order to select the aggregation time (see § 12.17) among the options: 2s, 5s, 10s, 30s, 1min, 2min, 5min, 10min, 15min, 30min Move the central slide bar cursor (“GO” symbol) to the positions: ...
  • Page 63 GSC60 7. Press the GO/STOP key to start recording. The instrument enters stand-by mode (waiting for the next minute or the set date/time) and the “ ” symbol is displayed as shown in the screen to the side. 8. With recording running, the “...

  • Page 64: Earth: Measurement Of Earth Resistance

    GSC60 6.7. EARTH: MEASUREMENT OF EARTH RESISTANCE The instrument allows performing the measurement of earth resistance of an installation in the following ways:  Measurement of earth resistance with 3-wire or 2-wire voltammetric method  Measurement of ground resistivity () with Wenner 4-wire method ...
  • Page 65 GSC60 Fig. 28: Two-wire earth resistance measurement using an auxiliary rod Fig. 29: Two-wire earth resistance measurement from the panel board Fig. 30: Ground resistivity measurement EN - 63...
  • Page 66 GSC60 1. Select the options “TN, TT or “IT”, “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see § 5.1.4). Touch the icon. The screen to the side (TT and IT systems) is shown on the display.
  • Page 67 GSC60 Touch the icon to zero the value in the "A" field and use the virtual keyboard to set the value of fault current (declared by the Energy distribution board) between 1A and 9999A. Confirm the choice by going back to the initial measurement screen.
  • Page 68 GSC60 11Drive the auxiliary rods into the ground keeping to the distance instructions provided by the standards (see § 12.12). 12Connect the alligator clips to the auxiliary rods and to the installation under test according to Fig. 27, Fig. 28, Fig. 29 or Fig. 30.
  • Page 69 GSC60 16 For earth resistance measurement in TN systems, in case of positive result (see § 12.11), the screen to the side is displayed by the instrument. It contains the value of contact voltage in the secondary display, the value of contact resistance of the voltage probe (Rs) and the value of contact resistance of the current probe (Rh).

  • Page 70: 3-Wire Or 2-Wire Earth Measure - Usa, Extra Europe And Germany Countries

    GSC60 6.7.2. 3-wire or 2-wire earth measure – USA, Extra Europe and Germany countries 1. Select the “USA”, “Extra Europe” or “Germany” reference countries (see § 5.1.2). Select the options “TN”, “TT” (measurement not available for USA country) or “IT” (measurement not available for USA country), “25 or 50V”, “50Hz or 60Hz”...
  • Page 71 GSC60 Touch the icon to zero the value in the "" field and use the virtual keyboard to set the value of limit earth resistance between 1 and 999. Confirm the choice by going back to the initial measurement screen.
  • Page 72 GSC60 9. For earth resistance measurement in TN systems, in case of positive result (measured value LOWER than set limit value), the screen to the side is displayed by the instrument. It contains also the value of contact resistance of the voltage probe (Rs) and the value of contact resistance of the current probe (Rh).

  • Page 73: Earth Measurement With Optional Clamp T2100

    GSC60 6.7.3. Earth measurement with optional clamp T2100 This measurement allows evaluating the partial resistances of the single earth rods of complex ring networks without disconnecting them and performs the calculation of the corresponden parallel resistance. Please refer to the user manual of clamp T2100 for specific details.
  • Page 74 GSC60 1. Select the options “TN, TT or “IT”, “25 or 50V”, “50Hz or 60Hz” and the reference voltage in the general settings of the instrument (see § 5.1.4). Touch the icon, touch the first icon in the lower left corner and set the measurement mode (see §...
  • Page 75 GSC60 5. After the insertion of the value of the first rod it will be not possible to transfer the eventually measrements saved inside the T2100 by means the key. Perform the same procedure for each rod of the network in question. At the end of the measurements, press the GO/STOP key on the instrument.

  • Page 76: Anomalous Situations In 3-Wire And 2-Wire Earth Measurements

    GSC60 6.7.4. Anomalous situations in 3-wire and 2-wire earth measurements 1. When starting a measurement, if the instrument detects an interfering voltage higher than 10V at the volt and ampere circuits input, it does not perform the test and displays the screen to the side.

  • Page 77: Aux: Measure And Recording Of Ambient Parameters

    GSC60 6.8. AUX: MEASURE AND RECORDING OF AMBIENT PARAMETERS By means of external transducers, this function allows measuring and recording the following environmental parameters: °C air temperature in °C by means of thermometric transducer °F air temperature in °F by means of thermometric transducer...
  • Page 78 GSC60 3 Move the left slide bar cursor in order to select the aggregation time (see § 12.17) among the options: 2s, 5s, 10s, 30s, 1min, 2min, 5min, 10min, 15min, 30min Move the central slide bar cursor (“GO” symbol) to the positions: ...
  • Page 79 GSC60 6. Press the GO/STOP key to start recording. The instrument enters stand-by mode (waiting for the next minute or the set date/time) and the “ ” symbol is displayed as shown in the screen to the side. 7. With recording running, the “...

  • Page 80: V%: Voltage Drop Of Main Lines

    GSC60 6.9. ΔV%: VOLTAGE DROP OF MAIN LINES This feature allows to evaluating the percentage value of voltage drop between two points of a main line in which a protection device is installed and comparing this value to possible limit value specified by guidelines. The following modes are available: Measurement of Phase to Neutral line impedance.
  • Page 81 GSC60 Fig. 34: Connection of the instrument for L-L mode voltage drop measurement 1. Select the option “50Hz or 60Hz” and the reference Phase-Neutral or Phase-Phase voltage in the general settings of the instrument (see § 5.1.4). Touch the icon and then the icon.
  • Page 82 GSC60 Touch the icon to zero the value in the “” field and use the virtual keyboard to set the value of the Offset Z1 impedance within the range 0.000 to 9999. Confirm the selection and go back to the previous screen.
  • Page 83 GSC60 8. The value of Z1 (Offset) impedance is shown on the display and is automatically included on the lower right icon, together with the “ ” symbol to indicate the instantaneous saving of the value 9. Connect the instrument to the final point of the main line being tested according to Fig.

  • Page 84: Anomalous Situations

    GSC60 6.9.1. Anomalous situations 1. If the instrument detects an L-N or L-PE voltage higher than the maximum limit (265V), it does not carry out the test and displays a screen like the one to the side. Check the connection of measuring cables 2.
  • Page 85 GSC60 6. If the instrument detects that the phase and neutral leads are inverted, it does not carry out the test and a screen similar to the one reported to the side is displayed. Rotate the shuko plug or check the connection of measuring cables 7.

  • Page 86: Pqa: Measurement And Recording Of Main Parameters

    GSC60 6.10. PQA: MEASUREMENT AND RECORDING OF MAIN PARAMETERS In this section the instrument allows the below operations:  Real-time display of numeric values of any electrical parameters of a single-phase and three-phase 3-wire or 4-wire system, harmonic analysis of voltages and currents up to order, power/energies and power peaks absorbed/generated ...
  • Page 87 GSC60 Fig. 35: Connection for measurement on single-phase 1-2WIRES Fig. 36: Connection for measurement on Three-phase system 3-4WIRES Fig. 37: Connection for measurement on Three-phase system 3-3WIRES EN - 85...
  • Page 88 GSC60 Fig. 38: Connection for measurement on Three-phase system 3-ARON Fig. 39: Connection for measurement on Three-phase system 4-wires 3-High Leg EN - 86...
  • Page 89 GSC60 Fig. 40: Connection for measurement on Three-phase system 3-wires 3- Open Fig. 41: Connection for measurement on Two-phase system 3-wires 3-Y Open Fig. 42: Connection for measurement on Two-phase system 3-wires 3-2El. ½ Fig. 43: Connection for measurement on Two-phase system 3-wires 1- CentrePoint...

  • Page 90: General Settings

    GSC60 6.10.2. General settings Touch the icon and then the icon. The display shows the screen on the right. Touch the icon in order to set:  The type of connection  The nominal reference voltage and the percentage of positive and negative thresholds for the detection of voltage anomalies ...
  • Page 91 GSC60 3. Move the slide bar cursor in order to select the type of clamp phase current neutral current measurement (marked in blue color), considering that the clamps can be of different types, between the options:   Flexible transducer clamp type (FLEX) ...

  • Page 92: Display Of Measurements

    GSC60 Touch the icon in order to select the pre-set configuration (see § 12.18) among those made available by the instrument. A screen like the one to the side is shown. The following options can be selectable:  EN50160 ...
  • Page 93 GSC60 8. The “ ” and “ ” symbols show the Inductive or Capacitive type of the load, respectively. Press the SAVE button or touch the icon to save the measurement on the display as instantaneous snapshot (see § 7.1)

  • Page 94: Start Recording

    GSC60 Touch the icon to show the parameters of harmonic analysis. The screen like the one to the side shows a three-phase situation. The histogram graph of percentage amplitude relevant to fundamental and voltage/current harmonics from DC, from the 1° up to the 49°...
  • Page 95 GSC60 16 Press the GO/STOP key to stop recording; the instrument automatically saves the result in its memory (see § 7.1.3). The message to the side is shown. Confirm by touching the “ ” icon or touch the “ ” icon to go back to the previous screen...

  • Page 96: List Of Message At Display

    GSC60 6.11. LIST OF MESSAGE AT DISPLAY MESSAGE DESCRIPTION Range: 1..15 Range: 5..999 Range: 0.01..100 Range: 1..500 Range: 0.04..10s Values out of range. Check the setup of instrument Range: 0..199 Range: 1..200 Range: 1..999 Range: 1..3000 Internal synchronization Synchronization error. Switch off and on the instrument Checksum error Communication error.

  • Page 97: Operations With The Memory

    GSC60 7. OPERATIONS WITH THE MEMORY 7.1. SAVING MEASUREMENTS The structure of the memory is divided into two independent areas for the SAFETY section (safety test and PQA, LEAKAGE, AUX snapshots – max 999 locations) and for RECORDINGS (PQA, AUX, LEAKAGE recordings. The SAFETY section memory is of "tree"...

  • Page 98: Recall And Delete Safety Measurements And Snapshots

    GSC60 7.1.2. Recall and delete safety measurements and snapshots Touch the icon in the general menu. The screen to the side appears on the display. Each measurement is identified by the icons (test with positive result) (test with negative result) or (test without outcome).Touch the desired measurement...

  • Page 99: Recall And Delete Saved Recordings

    GSC60 7.1.3. Recall and delete saved recordings The recordings are automatically saved inside memory at the pressure of GO/STOP key or at the end of set stop date/time. The SAVE key allows saving the instantaneous snapshots show at display and follow the same features of safety tests.

  • Page 100: Anomalous Situations

    GSC60 7.1.4. Anomalous situations 3. In case there is no measure saved and the instrument memory is accessed, a screen similar to the one reported here to the side is displayed. 4. In case tries to define a new sub-node over the 3rd...

  • Page 101: Connecting The Instrument To A Pc Or Mobile Devices

    GSC60 8. CONNECTING THE INSTRUMENT TO A PC OR MOBILE DEVICES The connection between a PC and the instrument can be done via a serial port (see Fig. 3) by means of an optical cable/USB C2006 or by means a WiFi connection. Before making the connection in USB mode, it is necessary to install on the PC the C2006 cable drivers present in the supplied CD-ROM in addition to the management software.

  • Page 102: Maintenance

    GSC60 9. MAINTENANCE 9.1. GENERAL INFORMATION  While using and storing the instrument, carefully observe the recommendations listed in this manual in order to prevent possible damage or danger during use.  Do not use the instrument in environments with high humidity levels or high temperatures.

  • Page 103: Technical Specifications

    GSC60 TECHNICAL SPECIFICATIONS Accuracy is calculated as: ±[%reading + (no. of digits) * resolution] at 23°C, <80%RH. 10.1. TECHNICAL CHARACTERISTICS SAFETY SECTION AC TRMS voltage Range [V] Resolution [V] Accuracy   (3%rdg + 2digits) Frequency Range [Hz] Resolution [Hz] Accuracy ...
  • Page 104 GSC60 First fault current – IT systems Range [mA] Resolution [mA] Accuracy    reading+1digit)    reading + 3digits) Limit contact voltage (ULIM) : 25V, 50V Test on RCD protection (Molded case type) Differential protection type (RCD):...
  • Page 105 GSC60 Test on RCD without integral current breaking device (with accessory RCDX10) Differential protection type (RCD): AC ( ), A ( ), B( ) – Generali (G), Selettivi (S) e Ritardati ( ) 100V 265V RCD type AC and A, 190V 265V RCD type B Voltage range Phase-Earth, Phase-Neutral: 0.3A ...
  • Page 106 GSC60 Global earth resistance in systems without Neutral   Accuracy Range [ Resolution [    1999 -0%, +(5.0 rdg + 3  Maximum current: < ½ I set ; Ut LIM (UL): 25V or 50V Contact voltage (measured during RCD and Ra test)

  • Page 107: Technical Characteristics Pqa Section

    GSC60 Environmental parameters Measurement Range Resolution Accuracy  °C 0.1°C -20.0 60.0°C  °F 0.1°F -4.0 140.0°F  0.1%RH 0.0% 100.0%RH   DC voltage 0.1mV 0.1mV 1.0V (2%rdg + 2digits)   0.001 20.00lux (*) 0.001 0.02Lux  ...
  • Page 108 GSC60 Active power (@ 230V, I> 5% FS, cos>=0.5, f=50.0Hz) FS clamp Range [kW] Resolution [kW] Accuracy 0.000  9.999 0.001  10A 10.00  99.99 0.01 0.00  99.99 0.01 10A < FS  200 100.0  999.9 (2.0rdg + 7dgt) 0.0 ...

  • Page 109: Reference Guidelines

    GSC60 10.3. REFERENCE GUIDELINES Safety: IEC/EN61010-1, IEC/EN61557-1, IEC60364 EMC : IEC/EN61326-1 Technical documentation: IEC/EN61187 Safety of measuring accessories: IEC/EN61010-031, IEC/EN61010-2-032 Insulation: double insulation Pollution level: Max operating altitude: 2000m (6562ft) Protection index: IP40 Measurement category: CAT IV 300V to ground, CAT III 350V to ground max 600VAC between inputs LOW...

  • Page 110: Environment

    GSC60 10.5. ENVIRONMENT 10.5.1. Environmental conditions for use Reference temperature: 23° ± 5°C ; (73°F ± 41°F) Operating temperature: 0 ÷ 40°C ; (32°F ÷ 104°F) Allowable relative humidity: <80%RH Storage temperature: -10 ÷ 60°C ; (14°F ÷ 140°F) Storage humidity: <80%RH...

  • Page 111: Service

    GSC60 SERVICE 11.1. WARRANTY CONDITIONS This instrument is warranted against any material or manufacturing defect, in compliance with the general sales conditions. During the warranty period, defective parts may be replaced. However, the manufacturer reserves the right to repair or replace the product.

  • Page 112: Theoretical

    GSC60 THEORETICAL APPENDIXES 12.1. CONTINUITY OF PROTECTIVE CONDUCTORS Purpose of the test Check the continuity of:  Protective conductors (PE), main equalizing potential conductors (EQP), secondary equalizing potential conductors (EQS) in TT and TN-S systems  Neutral conductors having functions of protective conductors (PEN) in TN-C system.

  • Page 113: Insulation Resistance

    GSC60 12.2. INSULATION RESISTANCE Purpose of the test Check that the insulation resistance of the installation complies with the requirements of the applicable guidelines. This test has to be performed with the circuit being tested not powered and with the possible loads it supplies disconnected.

  • Page 114: Checking Circuit Separation

    GSC60 12.3. CHECKING CIRCUIT SEPARATION Definitions A SELV system is a zero-category system or safety extra low voltage system characterized by power supply from an independent (e.g. batteries, small generator set) or safety source (e.g. safety transformer), protective separation from other electrical systems (double or reinforced insulation or earthed metal screen) and absence of earthed points (insulated from the earth).
  • Page 115 GSC60 EXAMPLE OF SEPARATION TEST BETWEEN ELECTRICAL CIRCUITS Insulation or safety transformer separating the circuits TEST BETWEEN ACTIVE PARTS Connect an instrument probe to one of the two conductors of the separated circuit and the other to one of the conductors of a non- separated circuit.

  • Page 116: Test On Differential Switches (Rcd)

    GSC60 12.4. TEST ON DIFFERENTIAL SWITCHES (RCD) Purpose of the test Checking that the General (G) and Selective (S) and Delayed ( ) differential protection devices have been correctly installed and adjusted and that they maintain their characteristics over time. The check must make sure that the differential switch trips at a...

  • Page 117: Verify Of The Breaking Capacity Of Protection Devices

    GSC60 12.5. VERIFY OF THE BREAKING CAPACITY OF PROTECTION DEVICES Purpose of the test Checking that the breaking capacity of the protection device is higher than the maximum fault current possible in the system. Parts of the system to be checked The test must be performed at the point in which the maximum short-circuit current is possible, normally immediately downstream of the protection device to be checked.

  • Page 118: Verify Of Protection Against Indirect Contacts In Tn Systems

    GSC60 12.6. VERIFY OF PROTECTION AGAINST INDIRECT CONTACTS IN TN SYSTEMS Purpose of the test The protection against indirect contacts in the TN systems must be guarantee by means a protection device against the overcurrents (typically MCB or fuse) which swich off the...
  • Page 119 GSC60 Depending on the set values of phase-phase, phase-neutral or phase-PE voltage (see § 5.1.4) and the measured value of fault loop impedance, the instrument calculates the minimum value of the assumed short-circuit current to be interrupted by the protection device.

  • Page 120: Verify Of Protection Against Indirect Contacts In Tt Systems

    GSC60 12.7. VERIFY OF PROTECTION AGAINST INDIRECT CONTACTS IN TT SYSTEMS Purpose of the test Checking that the protection device is coordinated with the value of earth resistance. We cannot assume a priori a reference limit value for earth resistance as a reference when checking the measurements result.

  • Page 121: Verify Of Protection Against Indirect Contacts In It Systems

    GSC60 12.8. VERIFY OF PROTECTION AGAINST INDIRECT CONTACTS IN IT SYSTEMS In IT systems the active parts must be isolated from the ground or be connected to earth through an impedance of sufficiently high value. In the case of a single earth fault current of the first fault is weak and therefore it is not necessary to interrupt the circuit.

  • Page 122: Verify Of Protection Coordination L-L, L-N And L-Pe

    GSC60 12.9. VERIFY OF PROTECTION COORDINATION L-L, L-N AND L-PE Purpose of the test Test the coordination of protective devices (typically MCB or fuse) present in a Single- phase or Three-phase installation as a function of the limit time of fault extinction by the protection set by the user and the calculated value of the short-circuit current.
  • Page 123 GSC60 CAUTION The instrument must be used to measure fault loop impedance values at least 10 times higher than the resolution value of the instrument in order to minimize errors. Depending on the set values of nominal voltage (see § 5.1.4) and the measured value of fault loop impedance, the instrument calculates the minimum value of the assumed short- circuit current to be interrupted by the protection device.

  • Page 124: Verify Of The Protection Against Short Circuits - Test I2T

    GSC60 12.10. VERIFY OF THE PROTECTION AGAINST SHORT CIRCUITS – TEST I2T The I t parameter represents the specific energy (expressed in A s) let through by the protective device in short-circuit condition. The I t energy must be able to be supported both by the cables and by the distribution bars.

  • Page 125: Verification Of Voltage Drop On Main Lines

    GSC60 12.11. VERIFICATION OF VOLTAGE DROP ON MAIN LINES Measurement voltage drop as a result of current flow through a main line or a part of it can be very important if it is necessary:  Verify the capability of an existing main line to supply a load ...

  • Page 126: Measurement Of Earth Resistance In Tn Systems

    GSC60 12.12. MEASUREMENT OF EARTH RESISTANCE IN TN SYSTEMS Purpose of the test Check that the measured value of earth resistance is lower than the maximum limit calculated on the basis of the maximum allowable contact voltage Utp for the system.
  • Page 127 GSC60 Measurement of earth impedance by voltammetric method Creating cables extensions If the length of the cables supplied with the instrument is not enough, you can create your own extensions to carry out the measurements in the system without influencing the instrument accuracy and, by the nature of the voltammetric method, without the need to perform any compensation of measuring cable resistance.
  • Page 128 GSC60 Big-sized earth networks This technique is always based on the voltammetric method and is used where it is difficult to position the auxiliary earth current rod at a distance equal to 5 times the diagonal of the area of the ground system by reducing this distance to once the diagonal of the ground system (see Fig.
  • Page 129 GSC60 Ground resistivity measurement 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 measurement of resistivity, there are no correct or incorrect values. The various values obtained using distances between increasing "d"...
  • Page 130 GSC60 Approximate evaluation of intentional rods' contribution The resistance of an Rd rod can be calculated with the following formulas ( r = average resistivity of the ground). a) resistance of a vertical rod Rd =  / L where L = length of the element touching the ground b) resistance of a horizontal rod Rd = 2...

  • Page 131: Voltage Anomalies

    GSC60 12.13. VOLTAGE ANOMALIES The meter is capable of recording independently by the aggregation time all those TRMS values as voltage anomalies (sags, swells), calculated every 20ms, beyond the percentage thresholds of Voltage Reference (Vref) set during the programming from ±3% to ±30% with steps of 1%.

  • Page 132: Voltage And Current Harmonics

    GSC60 12.15. VOLTAGE AND CURRENT HARMONICS Any periodical non-sine wave can be represented as a sum of sinusoidal waves having each a frequency that corresponds to an entire multiple of the fundamental, according to the relation:    ...
  • Page 133 GSC60 Odd harmonics Even harmonics Not multiple of 3 Multiple of 3 Relative voltage % Order h Relative voltage Relative voltage Order h Order h % Max % Max 6..24 Table 7 Limits for the harmonic voltages the supplier may introduce into the network...
  • Page 134 GSC60 Presence of harmonics: consequences In general, even harmonics, i.e. the 2 etc., do not cause problems. Triple harmonics, odd multiples of three, are added on the neutral (instead of cancelling each other) thus creating a condition of overheating of the wire which is extremely dangerous. Designers...

  • Page 135: Definitions Of Powers And Power Factors

    GSC60 12.16. DEFINITIONS OF POWERS AND POWER FACTORS In a standard electrical installation powered by three sine voltages the following are to be defined:     Phase Active Power: cos( (n=1,2,3)   Phase Apparent Power: (n=1,2,3) ...
  • Page 136 GSC60 NOTES  It shall be noted that the expression of the phase Reactive Power with no sine waveforms, would be wrong. To understand this, it may be useful to consider that both the presence of harmonics and the presence of reactive power produce, among other effects, an increase of line power losses due to the increased current RMS value.
  • Page 137 GSC60 Value Description The active power (positive or negative) is defined in the panel and therefore acquires the Pact value of the active power in that moment. The reactive power (inductive or capacitive, positive or negative) is defined in the panel and Preact therefore acquires the value of the reactive power in that moment.

  • Page 138: Measuring Method: Outlines

    GSC60 12.17. MEASURING METHOD: OUTLINES The meter is capable of measuring: voltages, currents, active powers, inductive and capacitive reactive powers, apparent powers, inductive and capacitive power factors, energies, analogical or pulse parameters. All these parameters are analysed in a digital way for each phase (voltage and current) and calculated based on formulas of the previous sections.

  • Page 139: Description Of Typical Configurations

    GSC60 12.18. DESCRIPTION OF TYPICAL CONFIGURATIONS During each recording, as a not modifiable option, the instrument always automatically saves, as a standard configuration, besides voltage anomalies, the values of any network parameter depending on the type of selected electric system (see 6.10.1).
  • Page 140 GSC60 HARM Description Settings System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: 10min Voltage anomalies recordings: Selected Reference voltage anomalies (Vn):...
  • Page 141 GSC60 kWh (POWER & ENERGY) Description Settings System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: 15min Voltage anomalies recordings:...
  • Page 142 GSC60 DEFAULT Description Settings System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: Not modified Voltage anomalies recordings: Selezionata...
  • Page 143 GSC60 Three-phase 4-wires 3-High Leg systems – for USA systems EN50160 Description Settings System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified...
  • Page 144 GSC60 kWh (POWER & ENERGY) Description Description System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: 15min Voltage anomalies recording:...
  • Page 145 GSC60 Three-phase 3-wires 3-Y Open, 3-2El. ½, 1-CentralPoint – for USA systems EN50160 Description Description System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording:...
  • Page 146 GSC60 kWh (POWER & ENERGY) Description Description System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: 15min Voltage anomalies recording:...
  • Page 147 GSC60 DEFAULT Description Description System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: Not modified Voltage anomalies recording: Selected...
  • Page 148 GSC60 Three-phase 3-wire 3-ARON and 3- Open (USA system) EN50160 Description Description System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified...
  • Page 149 GSC60 kWh (POWER & ENERGY) Description Description System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: 15min Voltage anomalies recording:...
  • Page 150 GSC60 DEFAULT Description Description System type: Not modified Frequency: Not modified Clamp type: Not modified Full scale clamp: Not modified TV ratio: Not modified Start recording: Not modified Stop recording: Not modified Aggregation time: Not modified Voltage anomalies recording: Selected...
  • Page 152 Fax: +55 19 9979.11325 eMail: info@htinstruments.es eMail: ht@htitalia.it eMail: vendas@ht-instruments.com.br Web: www.htinstruments.es Web: www.ht-instruments.com Web: www.ht-instruments.com.br HT INSTRUMENTS USA LLC HT INSTRUMENTS GMBH HT ITALIA CHINA OFFICE 3145 Bordentown Avenue W3 Am Waldfriedhof 1b 意大利 HT 中国办事处 08859 Parlin - NJ - USA...

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