UEi IRT803 Insulation Resistance Tester User Manual

1. សេចក្តីផ្តើម

This manual provides essential information for the safe and effective operation of the UEi IRT803 Digital Insulation Resistance Tester. The IRT803 is a versatile instrument designed for measuring insulation resistance, AC/DC voltage, and continuity. It features a 1000V AC/DC measurement capability, auto-ranging, a backlit display, and a DMM rotary style selector. Key functions include Lock, Compare, and Polarization Index (PI)/Dielectric Absorption Ratio (DAR) tests. Please read this manual thoroughly before use to ensure proper handling and to maximize the instrument's performance.

2. ព័ត៌មានសុវត្ថិភាព

Always adhere to safety precautions when using electrical testing equipment. The IRT803 is designed with safety in mind, featuring a CATIV rating up to 600V and CATII up to 1000V, ensuring protection in various jobsite environments. Failure to follow safety instructions can result in electric shock, fire, or damage to the instrument.

• Do not use the tester if it appears damaged or if the test leads are compromised.
• Ensure the correct function and range are selected before making any measurements.
• Always disconnect power to the circuit under test before connecting or disconnecting test leads for resistance measurements.
• ពាក់ឧបករណ៍ការពារផ្ទាល់ខ្លួន (PPE) សមស្រប ដូចជាស្រោមដៃដែលមានអ៊ីសូឡង់ និងវ៉ែនតាសុវត្ថិភាព។
• Do not operate the tester in wet conditions or in the presence of explosive gases or dust.
• ប្តូរថ្មភ្លាមៗ នៅពេលដែលសូចនាករថ្មទាបលេចឡើង ដើម្បីធានាបាននូវការអានត្រឹមត្រូវ។

3. តើមានអ្វីនៅក្នុងប្រអប់

នៅពេលវេចខ្ចប់ សូមផ្ទៀងផ្ទាត់ថាធាតុទាំងអស់ដែលបានរាយខាងក្រោមមានវត្តមាន និងមិនមានការខូចខាតទេ៖

• UEi IRT803 Insulation Resistance Tester
• Silicone test leads with alligator clips (red and black) (ATL57)
• Insulation test probe with alligator clips (red & black)
• អាគុយ AA ចំនួន ២ ដើម
• សៀវភៅណែនាំអ្នកប្រើប្រាស់
• កាបូបស្ពាយ

Image 3.1: All components included with the UEi IRT803 Insulation Resistance Tester, including the meter, test leads, probes, batteries, manual, and soft carrying case.

4. ផលិតផលលើសview

The IRT803 is designed for ease of use and durability. It features an easy-to-read LCD display with a backlight for visibility in various lighting conditions, and a work light to illuminate dark environments. The unit is protected by a rugged rubber boot, which also includes convenient test lead holders for compact storage. An auto power-off function helps conserve battery life.

៤.១. មុខងារ និងមុខងារសំខាន់ៗ

• 600V AC/DC Measurement: Capable of measuring both alternating and direct current voltagរហូតដល់ 600V ។
• ភាពធន់នឹងអ៊ីសូឡង់៖ Measures resistance from 0.01MΩ up to 2GΩ with test voltages of 50V, 100V, 250V, 500V, and 1000V.
• ការបន្ត៖ For checking circuit continuity.
• Compare Reading Function: Allows for comparison against a set reference value.
• PI/DAR Test: Automatic calculation of Polarization Index and Dielectric Absorption Ratio for advanced insulation diagnostics.
• A-Hold/Hold: បង្កកការអានដែលបានបង្ហាញសម្រាប់ការថតងាយស្រួល។
• Lock Reading: Locks the test voltage for continuous insulation testing.
• Rotary Dial Selector: Intuitive selection of measurement functions and test voltages.
• ស្បែកជើងកៅស៊ូការពារ៖ Enhances durability and provides lead storage.

រូបភាពទី 4.1: ខាងមុខ view of the IRT803 showing the LCD display, rotary selector, and function buttons.

Image 4.2: Visual representation highlighting the main functions and features of the IRT803.

5. រៀបចំ

5.1. ការដំឡើងថ្ម

The IRT803 requires four (4) AA batteries for operation. To install or replace batteries:

1. ត្រូវប្រាកដថាឧបករណ៍សាកល្បងត្រូវបានបិទ។
2. កំណត់ទីតាំងបន្ទប់ថ្មនៅខាងក្រោយឧបករណ៍។
3. ប្រើទួណឺវីសដើម្បីបើកគម្របប្រអប់ថ្ម។
4. Insert the four AA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
5. បិទគម្របប្រអប់ថ្មដោយសុវត្ថិភាព។

5.2. ការភ្ជាប់តេស្តនាំមុខ

Connect the test leads to the appropriate input jacks on the tester. For most measurements, the red lead connects to the 'V Ω INSULATION' jack and the black lead connects to the 'COM' (common) jack. Ensure connections are firm and secure.

Image 5.1: The IRT803 with test leads properly connected to the input jacks.

6. សេចក្តីណែនាំប្រតិបត្តិការ

6.1. Powering On/Off and Display Backlight

• To power on the unit, rotate the selector dial from 'OFF' to any desired measurement function.
• To power off, rotate the selector dial back to 'OFF'. The unit also features auto power-off to save battery life after a period of inactivity.
• ចុច ជ្រើសរើស button (often indicated by a light bulb icon) to toggle the display backlight on or off.

៦.២.៤. ការធ្វើតេស្តភាពធន់នឹងអ៊ីសូឡង់

The IRT803 can perform insulation resistance tests at various voltages.

1. ជ្រើសរើសកម្រិតសំឡេងសាកល្បងtage: Rotate the selector dial to the desired insulation test voltage (50V, 100V, 250V, 500V, ឬ 1000V) ។
2. ភ្ជាប់ខ្សែសាកល្បង៖ Connect the red test lead to the circuit under test and the black test lead to the ground or common point. Ensure the circuit is de-energized.
3. ចាប់ផ្តើមការសាកល្បង៖ Press and hold the large red តេស្ត button to begin the insulation test. The test voltage will be applied, and the resistance reading will be displayed.
4. មុខងារចាក់សោ៖ សម្រាប់ការធ្វើតេស្តជាបន្តបន្ទាប់ សូមចុច ចាក់សោ button after initiating the test. This will maintain the test voltage without needing to hold the តេស្ត ប៊ូតុង។ ចុច តេស្ត ម្តងទៀតដើម្បីដោះសោ។
5. Compare Function: ប្រើ ប្រកួតប្រជែង button to set a reference value and compare subsequent readings against it.
6. PI/DAR Test: Select the PI/DAR function on the dial. The meter will automatically perform the Polarization Index and Dielectric Absorption Ratio tests, displaying the calculated values.
7. Read and Record: Observe the reading on the LCD. Use the កាន់ button to freeze the display for easier recording.
8. ការបញ្ចេញចោល៖ After completing an insulation test, the circuit under test should be discharged. The IRT803 typically handles this automatically, but always exercise caution.

Image 6.1: The IRT803 being used to measure insulation resistance on electrical wiring.

រូបភាពទី 6.2៖ ទិដ្ឋភាពជិតស្និទ្ធ view of the test leads securely connected to the IRT803's input terminals.

6.3. វ៉ុលtage Testing (AC/DC)

ដើម្បីវាស់វ៉ុល AC ឬ DCtage up to 600V:

1. Rotate the selector dial to the 'V' position.
2. Connect the red test lead to the positive or live point and the black test lead to the negative or neutral/ground point of the circuit.
3. The display will show the measured voltage. The meter will automatically detect AC or DC voltage.

6.4. ការធ្វើតេស្តបន្ត

To check for continuity in a circuit:

1. Rotate the selector dial to the 'Ω' (Ohms) position, which typically includes continuity.
2. Connect the test leads across the component or circuit path you wish to test.
3. If there is continuity (low resistance), the meter will typically emit an audible beep and display a low resistance value.

7. ការថែទាំ

7.1. ការសម្អាត

To maintain the accuracy and longevity of your IRT803:

• ជូត គasing ជាមួយការផ្សាយពាណិជ្ជកម្មamp ក្រណាត់និងសាប៊ូបោកខោអាវស្រាល។ កុំប្រើសំណឹកឬសារធាតុរំលាយ។
• Ensure the unit is completely dry before storage or next use.

7.2. ការជំនួសថ្ម

Replace batteries as described in Section 5.1 when the low battery indicator appears on the display. Always use fresh AA alkaline batteries.

7.3. ការផ្ទុក

When not in use, store the IRT803 in its soft carrying case in a cool, dry environment, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.

8. ការដោះស្រាយបញ្ហា

If you encounter issues with your IRT803, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, please contact UEi Test Instruments customer support.

9. លក្ខណៈបច្ចេកទេស

10. ព័ត៌មានធានា

The UEi IRT803 Insulation Resistance Tester is backed by a ការធានារយៈពេល 1 ឆ្នាំមានកំណត់ from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, unauthorized modification, accident, or neglect. For specific terms and conditions, please refer to the warranty card included with your product or contact UEi Test Instruments customer support.

រូបភាព 10.1៖ ឧample of a Certificate of Conformity, indicating adherence to quality standards.

11. ការគាំទ្រ

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact UEi Test Instruments customer support. You can find more information and contact details by visiting the official UEi Test Instruments website or their Amazon store page.

UEi Test Instruments Store: ទស្សនាហាង