1. Nhanganyaya
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.

Mufananidzo 1: Mberi view of the LARIAU TS58 Digital Insulation Resistance Tester.
2. Safety Information
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.
- Nguva dzose iva nechokwadi chekuti mudziyo wacho uri kushanda zvakanaka usati washandisa.
- Observe the high voltage 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.
- Usaedza kuyera voltages or resistances beyond the specified ranges.
- Ensure proper connection of test leads before initiating any measurement.
3. Chigadzirwa Pamusoroview
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 casing, and accessories.
3.1 Kudzora uye Kuratidza
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.

Mufananidzo 3: Kupfuuraview of the TS58's main functions and display elements.
4. Setup
4.1 Kuiswa kwebhatiri
The TS58 is powered by 8 x 1.5V AA/LR6 batteries (not supplied). To install or replace batteries:
- Tsvaga nzvimbo yebhatiri kuseri kwechiridzwa.
- Vhura chivharo chebhatiri.
- Insert 8 AA/LR6 batteries, ensuring correct polarity (+/-).
- Vhara chivharo chebhatiri zvakachengeteka.
A low battery indication will appear on the display when batteries need replacement.
5. Operating Instructions
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 Insulation Resistance Measurement
- Connect the test leads to the appropriate terminals on the TS58 and to the equipment under test.
- Batidza chiridzwa.
- Use the 'SELECT' button to choose the insulation resistance measurement mode.
- Gadzirisa kubuda kwevoltage (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 voltage indicator ichavhenekera.
- Read the insulation resistance value on the LCD screen.
- After the test, the instrument automatically discharges the circuit.
5.2 AC/DC Voltage Kuyera
- Connect the test leads to the appropriate terminals on the TS58 and to the voltage source.
- Batidza chiridzwa.
- Use the 'SELECT' button to choose the AC or DC voltage measurement mode.
- Verenga bhukutage 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 Kuchengeta Dhata uye Kurangarira
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. Kuchengeta
6.1 Kuchenesa
Wipe the instrument's exterior with a soft, damp jira. Usashandise zvinochenesa zvinogumbura kana zvinonyungudutsa. Iva nechokwadi chekuti hapana hunyoro hunopinda mumudziyo.
6.2 Kuchengeta
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. Kugadzirisa matambudziko
- Instrument does not power on: Tarisa kuiswa kwebhatiri uye ona kuti mabhatiri haana kupera. Dzorera kana zvakakodzera.
- Kurava kusina kururama:
- Ita shuwa kuti bvunzo dzinotungamira dzakabatana zvakanaka uye hadzina kukuvara.
- Verify the correct measurement mode and output voltage vanosarudzwa.
- Consider environmental factors like temperature and humidity, especially for insulation resistance measurements.
- Yakakwira voltage 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. Zvinotsanangurwa
The following table details the technical specifications of the LARIAU TS58 Digital Insulation Resistance Tester.

Figure 6: Detailed technical parameters of the TS58.
| Parameter | Value |
|---|---|
| Color | Tsvuku + Gray |
| Material | ABS + Silicone |
| Sikirini | LCD Backlit Screen |
| Maximum Count | 2000 |
| Kubuditsa Voltage | 50V/100V/250V/500V/1000V |
| Resistance Measuring Range | 0.1 MΩ ~ 10 GΩ |
| AC / DC Voltage Measuring Range | 10V-600V |
| AC Voltage Frequency | 40-70 Hz |
| Data Storage | 100 mapoka |
| Short-circuit Current | <1.8 mA |
| Magetsi | 8 * 1.5 V AA/LR6 (not supplied) |
| Nzvimbo Yebasa | 0 ~35℃, <75%RH, <2000m |
| Nzvimbo Yekuchengetedza | -10~50℃, <75%RH |
| Chinhu Saizi | 180 * 140 * 70mm / 7.09 * 5.51 * 2.76in |
| Chinhu Weight (pasina bhatiri) | 623 g / 1.37 lb |
9. Warranty uye Tsigiro
Ruzivo nezve waranti yechigadzirwa uye rutsigiro rwevatengi runowanzo kupihwa pamwe chete nekurongedza kwechigadzirwa kana pamagwaro epamutemo emugadziri. 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.
