1. Уводзіны
The LARIAU TS58 is a digital insulation resistance tester designed for measuring insulation resistance in various electrical equipment and insulating materials. This includes transformers, motors, cables, switches, and other electrical appliances. It is suitable for maintenance, repair, and testing applications.
This instrument features automatic voltage release, high stability, and reliability. It offers a maximum display count of 2000, 100 groups of data storage, and an insulation resistance measurement range of 0.1 MΩ to 10 GΩ. It also includes AC/DC voltage measurement capabilities and advanced DAR (Dielectric Absorption Ratio) and PI (Polarization Index) measurements for more accurate insulation assessment.

Малюнак 1: Спераду view of the LARIAU TS58 Digital Insulation Resistance Tester.
2. Інфармацыя па бяспецы
Please read this manual carefully before using the instrument. Adhere to all safety warnings and operating instructions to prevent electric shock, injury, or damage to the instrument.
- Always ensure the instrument is in good working condition before use.
- Звярніце ўвагу на высокі аб'ёмtage indication on the display, which reminds you of safe operation during measurements.
- Do not operate the instrument in wet environments or with wet hands.
- Replace batteries promptly when the low battery indication appears to ensure accurate readings and safe operation.
- Не спрабуйце вымераць аб'ёмtages or resistances beyond the specified ranges.
- Ensure proper connection of test leads before initiating any measurement.
3. Прадукт скончыўсяview
The TS58 features a clear LCD backlit screen for easy reading, a robust dustproof and moisture-proof shell, a foldable bracket for convenient positioning, and comes with a zipper carry bag for portability.

Figure 2: Key features of the TS58, including the LCD screen, protective casinг, і аксэсуары.
3.1 Элементы кіравання і дысплей
The device includes a large digital LCD display, function buttons for selecting measurement modes, adjusting output voltage, and initiating tests. It also has input terminals for test leads.

Малюнак 3: Закончанаview of the TS58's main functions and display elements.
4. Настройка
4.1 Устаноўка батарэі
The TS58 is powered by 8 x 1.5V AA/LR6 batteries (not supplied). To install or replace batteries:
- Знайдзіце батарэйны адсек на задняй панэлі прыбора.
- Адкрыйце крышку батарэйнага адсека.
- Insert 8 AA/LR6 batteries, ensuring correct polarity (+/-).
- Надзейна зачыніце крышку батарэйнага адсека.
A low battery indication will appear on the display when batteries need replacement.
5. Інструкцыя па эксплуатацыі
The TS58 is designed for measuring insulation resistance and AC/DC voltage. Always ensure the test leads are securely connected to the instrument and the circuit under test.

Figure 4: The TS58 tester with test leads, ready for use.
5.1 Вымярэнне супраціўлення ізаляцыі
- Connect the test leads to the appropriate terminals on the TS58 and to the equipment under test.
- Уключыце прыбор.
- Use the 'SELECT' button to choose the insulation resistance measurement mode.
- Адрэгулюйце выходнае аб'ёмtage (50V/100V/250V/500V/1000V) using the up/down buttons as required for your test.
- Press the 'TEST' button to initiate the measurement. The high voltagзагарыцца індыкатар.
- Read the insulation resistance value on the LCD screen.
- After the test, the instrument automatically discharges the circuit.
5.2 AC/DC Voltagе Вымярэнне
- Connect the test leads to the appropriate terminals on the TS58 and to the voltagэлектронная крыніца.
- Уключыце прыбор.
- Use the 'SELECT' button to choose the AC or DC voltage рэжым вымярэння.
- Прачытайце тtage value on the LCD screen. The measurement range is 10V-600V.
5.3 DAR and PI Index Measurement
The DAR (Dielectric Absorption Ratio) and PI (Polarization Index) measurements help assess the quality and aging status of insulation, mitigating the effects of temperature, humidity, and interference currents.
- Perform an insulation resistance test as described in section 5.1.
- Press the 'PI/DAR' button. The instrument will automatically compute and display the DAR and PI values.
- Refer to industry standards for interpreting DAR and PI values to evaluate insulation condition.
5.4 Захоўванне і аднаўленне дадзеных
The TS58 can store up to 100 groups of measurement data.
- To save data: After a measurement, press the 'HOLD*' button to hold the current reading, then press 'MEM READ' to save it. (Note: The exact sequence might vary; refer to the full manual for precise steps if available).
- To recall data: Press the 'MEM READ' button and use the up/down arrows to navigate through stored data groups.

Figure 5: The TS58 in practical application scenarios.
6. Тэхнічнае абслугоўванне
6.1 Ачыстка
Працярыце знешнія паверхні інструмента мяккай тканінайamp тканіна. Не выкарыстоўвайце абразіўныя ачышчальнікі або растваральнікі. Сачыце за тым, каб унутр прылады не трапляла вільгаць.
6.2 Захоўванне
When not in use for extended periods, remove the batteries to prevent leakage. Store the instrument in its zipper carry bag in a dry environment, away from direct sunlight and extreme temperatures. The recommended storage environment is -10~50℃, <75%RH.
7. Выпраўленне непаладак
- Прылада не ўключаецца: Праверце ўстаноўку батарэек і пераканайцеся, што яны не разраджаныя. Пры неабходнасці заменіце.
- Няправільныя паказанні:
- Пераканайцеся, што вымяральныя шпулькі падключаны правільна і не пашкоджаныя.
- Verify the correct measurement mode and output voltage are selected.
- Consider environmental factors like temperature and humidity, especially for insulation resistance measurements.
- Высокі аб'ёмtage warning persists after test: The instrument has an automatic voltage release function. If the warning persists, ensure the circuit under test is fully discharged before handling.
8. Тэхнічныя характарыстыкі
The following table details the technical specifications of the LARIAU TS58 Digital Insulation Resistance Tester.

Figure 6: Detailed technical parameters of the TS58.
| Параметр | Каштоўнасць |
|---|---|
| Колер | Чырвоны + шэры |
| Матэрыял | ABS + сілікон |
| Экран | ВК-экран з падсветкай |
| Максімальная колькасць | 2000 |
| Выхад Voltage | 50V/100V/250V/500V/1000V |
| Resistance Measuring Range | 0.1 MΩ ~ 10 GΩ |
| AC/DC Voltage Дыяпазон вымярэння | 10 В-600 У |
| Пераменнага токуtage Частата | 40-70 Гц |
| Захоўванне дадзеных | 100 груп |
| Ток кароткага замыкання | <1.8 мА |
| Электразабеспячэнне | 8 * 1.5 V AA/LR6 (not supplied) |
| Працоўнае асяроддзе | 0 ~35℃, <75%RH, <2000m |
| Асяроддзе захоўвання | -10~50℃, <75%RH |
| Памер прадмета | 180 * 140 * 70 мм / 7.09 * 5.51 * 2.76 цалі |
| Вага прадмета (без батарэі) | 623 г / 1.37 фунта |
9. Гарантыя і падтрымка
Інфармацыя аб гарантыі на прадукт і падтрымцы кліентаў звычайна змяшчаецца на ўпакоўцы прадукту або на афіцыйным сайце вытворцы. website. Please refer to those resources for details on warranty coverage, technical assistance, and service inquiries.
For further assistance, please contact LARIAU customer support through their official channels.