HT Italia HT77C User Manual
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HT Italia HT77C User Manual

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ENGLISH
User manual
 Copyright HT ITALIA 2020
Release EN 1.00 - 17/04/2020

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Summary of Contents for HT Italia HT77C

  • Page 1 ENGLISH User manual  Copyright HT ITALIA 2020 Release EN 1.00 - 17/04/2020...

  • Page 2: Table Of Contents

    HT77C TABLE OF CONTENTS PRECAUTIONS AND SAFETY MEASURES ............... 2     1.1.  Preliminary instructions ..................... 2  1.2.  During use ......................... 3  1.3.  After use ..........................3  1.4.  Definition of measurement (overvoltage) category ............3  GENERAL DESCRIPTION ................... 4  ...

  • Page 3: Precautions And Safety Measures

    HT77C 1. PRECAUTIONS AND SAFETY MEASURES The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to electronic measuring instruments. For your safety and in order to prevent damaging the instrument, please carefully follow the procedures described in this manual and read all notes preceded by the symbol with the utmost attention.

  • Page 4: During Use

    HT77C 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 switching on the clamp, remove the conductor from the clamp jaw.

  • Page 5: General Description

    HT77C 2. GENERAL DESCRIPTION The instrument carries out the following measurements:  AC TRMS current  AC TRMS leakage current  Measurement compliance with IEC/EN6157-13 Class 2 guideline  Bluetooth connection to mobile devices through HTLeakage APP 3. PREPARATION FOR USE 3.1.

  • Page 6: Nomenclature

    HT77C 4. NOMENCLATURE 4.1. INSTRUMENT DESCRIPTION CAPTION: 1. Inductive clamp jaw 2. White LED torch 3. Opening lever 6. HOLD/MAXMIN key 7. HFR key 8. RANGE key 9. LCD display Fig. 1: Instrument description 4.2. ALIGNMENT MARKS AND HAND PROTECTION Put the conductor as close as possible to the middle of the jaws on the intersection of the indicated marks (see Fig.

  • Page 7: Description Of Functions Keys

    HT77C 4.3. DESCRIPTION OF FUNCTIONS KEYS 4.3.1. Press and hold the key for 2s allows switching on the clamp. While switching on, the display shows the charge percentage of the power supply battery. Replace the batteries when the 0% appears (see § 6.2). To switch off the clamp, Press and hold the for 3s.

  • Page 8: Operating Instructions

    HT77C 5. OPERATING INSTRUCTIONS 5.1. AC CURRENT MEASUREMENT CAUTION Insert the cable in the middle of the clamp jaws, in order to obtain accurate measures. Use the marks as a reference (see Fig. 2) Correct Incorrect Fig. 3: Use of the clamp for AC current measurement 1.

  • Page 9: Leakage Current Measurement

    HT77C 5.2. LEAKAGE CURRENT MEASUREMENT CAUTION Insert the cable(s) in the middle of the clamp jaws, in order to obtain accurate measures. Use the marks as a reference (see Fig. 2) Fig. 4: Measuring leakage current with direct Fig. 5: Measuring leakage current with...

  • Page 10: Bluetooth Connection With Htleakage App

    HT77C 5.3. BLUETOOTH CONNECTION WITH HTLEAKAGE APP The instrument is equipped with the integrated Bluetooth BLE 4.0 function that allows a wireless connection to mobile devices (tablets/smartphones) via the dedicated HTLeakage APP which can be free downloaded for Android and iOS systems using the following QR...

  • Page 11: Maintenance

    HT77C 6. MAINTENANCE 6.1. GENERAL INFORMATION 1. 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. 2. Do not use the instrument in environments with high humidity levels or high temperatures.

  • Page 12: Technical Specifications

    HT77C 7. TECHNICAL SPECIFICATIONS 7.1. TECHNICAL CHARACTERISTICS Accuracy indicated as [%reading + (digit number*resolution)] at 23°C±5°C, <80%RH AC TRMS Current Accuracy Accuracy Accuracy Range Resolution (30Hz  50Hz) (51  60Hz) (61Hz  1kHz) 6mA (*) 0.001mA 60mA 0.01mA  (2.0%rdg+ 5dgt) (**) ...

  • Page 13: Technical Specifications For Measures According To Ec/En61557-13 Class 2

    HT77C 7.1.1. Technical specifications for measures according to EC/EN61557-13 Class 2  Reference guideline: IEC/EN61557-13, Class 2, ≤30A/m @ In: 3.5mA ÷ 600mA, Fn: 40Hz ÷ 1kHz  NOTE1  in the measurements according to IEC/EN61557-13 add the followed conditions to the general specifications ...

  • Page 14: Environment

    HT77C 7.2. ENVIRONMENT 7.2.1. Environmental conditions for use Reference temperature: 23° ± 5°C (73° ± 41°F) Operating temperature: -10°C ÷ 30°C (14°F ÷ 86°F) (RH ≤ 80%) 30°C ÷ 40°C (86°F ÷ 104°F) (RH ≤ 75%) 40°C ÷ 50°C (104°F ÷ 122°F) (RH ≤ 45%) Allowable relative humidity: <80%RH...

  • Page 15: Service

    HT77C 8. SERVICE 8.1. WARRANTY CONDITIONS This equipment is guaranteed against material faults or production defects, in accordance with the general sales conditions. During the warranty period (one year), faulty parts may be replaced. The manufacturer reserves the right to decide either to repair or replace the product.

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