HT PV-ISOTEST User Manual
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HT PV-ISOTEST User Manual

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 Copyright HT ITALIA 2020
Release EN 1.00 - 30/11/2020

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Summary of Contents for HT PV-ISOTEST

  • Page 1  Copyright HT ITALIA 2020 Release EN 1.00 - 30/11/2020...

  • Page 2: Table Of Contents

    PV-ISOTEST 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 3 PV-ISOTEST 11.2.  Dielectric Absorption Ratio (DAR) ................... 36  ASSISTANCE ......................37     12.1.  Warranty conditions ......................37  12.2.  Assistance ........................37  EN - 2...

  • Page 4: Precautions And Safety Measures

    PV-ISOTEST 1. PRECAUTIONS AND SAFETY MEASURES The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to electronic measuring instruments. Before and while carrying out measurements, observe the following indications and read all notes preceded by the symbol with the utmost attention.

  • Page 5: During Use

    PV-ISOTEST 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.  The symbol “...

  • Page 6: General Description

    PV-ISOTEST 2. GENERAL DESCRIPTION 2.1. FOREWORD This instrument has been designed to carry out safety tests on photovoltaic (PV) modules/strings in order to verify the parameters declared by the manufacturer. In addition, this instrument measures insulation/continuity on PV modules/strings/fields. 2.2.

  • Page 7: Preparation For Use

    PV-ISOTEST 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 8: Nomenclature

    PV-ISOTEST 4. NOMENCLATURE 4.1. DESCRIPTION OF THE INSTRUMENT CAPTION: 1. Inputs 2. LCD display     3. Keys , SAVE/ENTER 4. Compartment of connector for optical/USB cable 5. Key GO/STOP 6. Key HELP/ 7. Key ESC/MENU 8. Key ON/OFF Fig.

  • Page 9: Keyboard Description

    When switching on the instrument, the initial screen appears for a few seconds. It shows: P V - I S O T E S T  The instrument model (PV-ISOTEST)  The manufacturer’s name  The serial number (SN:) of the instrument S N : 2 0 3 4 5 6 7 8 ...

  • Page 10: General Menu

    PV-ISOTEST 5. GENERAL MENU Pressing the ESC/MENU key in any condition of the MENU 14/09 -17:34 instrument displays the general menu screen, in which the : Voltage instrument may be set, the saved measures can be displayed  : Insulation: and the desired measuring function can be selected.

  • Page 11: General

    PV-ISOTEST 5.1.3. General Move the cursor to General by using the arrow keys (,) 15/10 – 18:04 and confirm with ENTER. The instrument shows the screen AutoPowerOff  :  which allows activating/deactivating the the Auto Power Off Keys beep ...

  • Page 12: Operating Instructions

    PV-ISOTEST 6. OPERATING INSTRUCTIONS 6.1. RPE – CONTINUITY MEASUREMENT ON MODULES/STRINGS/PV FIELDS The purpose of this measurement is performing a continuity test of the protective and equipotential conductors (e.g.: from rod to earth and connected foreign earth) and earth rods of SPDs on PV installations. The test must be carried out using a test current >...
  • Page 13 PV-ISOTEST 4. Use the arrow keys  or  and select the position “><”. 15/10 – 18:04 The display shows the screen to the side.  - - - I t e s t - - - - - - ...

  • Page 14: Carrying Out Continuity Measurements In Standard (Std) Mode

    PV-ISOTEST 6.1.2. Carrying out continuity measurements in Standard (STD) mode 1. Position the cursor onto RPE by using the arrow keys 15/10 – 18:04 (,) and confirm with ENTER. The display shows the  - - - following screen. The symbol “STD” is shown on the display.
  • Page 15 PV-ISOTEST 6. Press the GO/STOP key to start the test. In case no error 15/10 – 18:04 conditions occur, the instrument displays the message  - - - “Measuring…” as shown in the screen to the side. I t e s t - - - Measuring…...

  • Page 16: Carrying Out Continuity Measurements In Timer (Tmr) Mode

    PV-ISOTEST 6.1.3. Carrying out continuity measurements in Timer (TMR) mode 1. Position the cursor onto RPE by using the arrow keys 15/10 – 18:04 (,) and confirm with ENTER. The display shows the  - - - following screen. 2. Use the arrow keys (,) to select the Timer mode. The...
  • Page 17 PV-ISOTEST 9. Press the GO/STOP key to start the test. In case no error 15/10 – 18:04 conditions occur, the instrument starts a series of  0 . 2 3 continuous measurements for the entire duration of the set Timer, emitting a short sound every 3s, and...

  • Page 18: Anomalous Situations

    PV-ISOTEST 6.1.4. Anomalous situations 1. To zero the value of compensated resistance, carry out a 15/10 – 18:04 new compensation procedure with a resistance higher  - - - than 5 as, for example, with open leads. The message “Zero Reset” appears on the display.

  • Page 19: M - Measurement Of Insulation On Pv Modules/Strings/Fields

    PV-ISOTEST 6.2. M – MEASUREMENT OF INSULATION ON PV MODULES/STRINGS/FIELDS The purpose of this function is measuring the insulation resistance of the active conductors of PV modules, strings and fields according to the prescriptions of IEC/EN62446-1 and IECEN61557-2 guidelines, with no need to use an external switch to short-circuit the positive and negative terminals.
  • Page 20 PV-ISOTEST 4. Use the arrow keys  or  and select the position “Lim.”. M 15/10 – 18:04 ( + ) ( - ) The display shows the screen to the side. V t e s t - - - - - - 5.

  • Page 21: Measuring Insulation - Tmr Mode

    PV-ISOTEST 8. The instrument carries out the following measurements in M 15/10 – 18:04 ( + ) ( - ) a sequence: V t e s t 1 5 1 0 1 5 1 5  Insulation between positive pole (+) of the string and M ...
  • Page 22 PV-ISOTEST 6. Use the arrow keys  or  and select the position M 15/10 – 18:04 V t e s t ( - ) - - - “Time”. The display shows the screen to the side. M  R i ( - ) - - - 7.
  • Page 23 PV-ISOTEST 10. If “Ri(-)≥Lim”, the instrument shows the message “OK”, M 15/10 – 18:04 V t e s t ( - ) 1 5 4 0 to indicate the positive result of measurement. M  R i ( - ) >...

  • Page 24: Anomalous Situations

    PV-ISOTEST 6.2.3. Anomalous situations 1. In case the instrument detects one of the following M 15/10 – 18:04 ( + ) ( - ) conditions: “|VPN| > 1500V”, “|VPE| > 1500V” or “|VNE| > V t e s t - - - - - - 1500V”, it stops the measurement, gives out a long...
  • Page 25 PV-ISOTEST 5. In case the instrument detects that the voltage between M 15/10 – 18:04 ( + ) ( - ) the positive and negative poles is greater than the test V t e s t 1 3 2 0 1 5 1 0 voltage set, the message "VPN>Vtest"...

  • Page 26: Gfl - Searching For Conditions Of Low Insulation On Pv Strings

    PV-ISOTEST 6.3. GFL – SEARCHING FOR CONDITIONS OF LOW INSULATION ON PV STRINGS In GFL (Ground Fault Locator) function, the instrument is capable of providing an indication about the position of a possible single fault of low insulation located in a string of the installation due, for example, to infiltrations of water or humidity in the junction boxes of PV modules.
  • Page 27 PV-ISOTEST 6. Use the arrow keys  or  and select the position “Lim.”. 15/10 – 18:04 The display shows the screen to the side. M  - - - 7. Use the arrow keys (,) to set the minimum limit threshold for insulation measurement, which can be selected between 0.05 M...
  • Page 28 PV-ISOTEST 10. With no fault conditions (Rp≥Lim), the instrument 15/10 – 18:04 shows the screen to the side and the message “OK” M  > 1 0 0 appears on the display. V P N V P E V N E...
  • Page 29 PV-ISOTEST 14. In case a fault is present (Rp<Lim) in position NMOD 15/10 – 18:04 (between the second last and the last module), the M  0 . 0 instrument shows the screen to the side and the message “GND:Fault NMOD-1..NMOD” on the display.

  • Page 30: Dmm - Multimeter Function

    PV-ISOTEST 6.4. DMM – MULTIMETER FUNCTION In this function, the instrument shows the RMS and DC values of voltages between the positive (+) and negative (-) pole, between the positive (+) pole and earth connection and between the negative (-) pole and earth connection, in order to check for the presence of AC components on input voltages.

  • Page 31: Storing Results

    PV-ISOTEST 7. STORING RESULTS The instrument allows saving max 999 measured values. The saved data can be recalled to the display and deleted at any moment, and, upon saving, they can be associated with up to a maximum of 3 levels of numeric markers relevant to the installation name, the PV string and the PV module (with max value 250).

  • Page 32: Recall Of Data To Display And Memory Deletion

    PV-ISOTEST 7.2. RECALL OF DATA TO DISPLAY AND MEMORY DELETION 1. Position the cursor onto MEM by using the arrow keys MEM 15/10 – 18:04 D a t e T y p e (,) and confirm with ENTER. The screen to the side...

  • Page 33: Connecting The Instrument To The Pc

    PV-ISOTEST 8. CONNECTING THE INSTRUMENT TO THE PC CAUTION  The connection between instrument and PC is realized by means of cable C2006.  In order to transfer the data onto a PC, it is necessary to install beforehand both the management software and the drivers of cable C2006 on the PC itself.

  • Page 34: Maintenance

    PV-ISOTEST 9. MAINTENANCE 9.1. GENERAL INFORMATION The instrument you purchased is a precision instrument. 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 35: Technical Specifications

    PV-ISOTEST 10. TECHNICAL SPECIFICATIONS 10.1. TECHNICAL CHARACTERISTICS Accuracy is indicated as [%reading + (no. of digits) * resolution] at 23°C ± 5°C, <80%RH DC Voltage Range [V] Resolution [V] Accuracy   (1.0 1500 reading + 2digits) AC TRMS Voltage...

  • Page 36: General Characteristics

    PV-ISOTEST 10.2. GENERAL CHARACTERISTICS 10.2.1. Reference gudelines Instrument safety: IEC/EN61010-1, IEC/EN61010-2-030, IEC/EN61010-2-033, IEC/EN61010-2-034 EMC: IEC/EN61326-1 Safety of measuring accessories: IEC/EN61010-031 General: IEC/EN62446-1 Measurement M: IEC/EN61557-2 Measurement RPE: IEC/EN61557-4 Insulation: double insulation Pollution level: Measurement category: CAT III 1500V DC, CAT III 1000V AC, Max 1500VDC, 1000V AC between inputs 10.2.2.

  • Page 37: Appendix - Theoretical Outline

    PV-ISOTEST 11. APPENDIX – THEORETICAL OUTLINE 11.1. MEASUREMENT OF POLARIZATION INDEX (PI) The purpose of this diagnostic test is to evaluate the influence of the polarization effects. Upon the application of a high voltage to insulation, the electric dipoles distributed in the insulation align in the direction of the applied electric field.
  • Page 38 PV-ISOTEST 12. ASSISTANCE 12.1. 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 40 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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