NJTy T-6125 Digital Isolation Tester User Manual

1. Introducció

Thank you for choosing the NJTy T-6125 Digital Isolation Tester. This device is a professional-grade instrument designed for accurate measurement of insulation resistance, absorption ratio, polarization index, AC voltage, and low resistance. It features a high-performance integrated circuit, wide measurement range, and multiple test voltage levels, making it an essential tool for electricians and maintenance technicians. This manual provides detailed instructions for safe and effective operation, maintenance, and troubleshooting.

Figura 1: Frontal view of the NJTy T-6125 Digital Isolation Tester, showing the large LCD display and control dial.

2. Informació de seguretat

Si us plau, llegiu i comprengui tots els avisos de seguretat i les instruccions d'ús abans d'utilitzar aquest instrument. Si no segueix aquestes instruccions, pot provocar descàrregues elèctriques, incendis o lesions greus.

• Always ensure the device is in good working condition before use. Do not use if damaged.
• Do not operate the tester in wet environments or explosive atmospheres.
• Wear appropriate personal protective equipment (PPE), such as insulated gloves and safety glasses, when performing electrical measurements.
• Verify that the circuit under test is de-energized before connecting or disconnecting test leads, unless performing live voltage measurements as specified.
• No supereu les classificacions màximes d'entrada per a volumtage i corrent.
• Assegureu-vos que el compartiment de la bateria estigui ben tancat abans de fer-lo funcionar.
• Refer to the warning label on the back of the device: "TO AVOID ELECTRICAL SHOCK, REMOVE TEST LEADS BEFORE OPENING CASE. READ OPERATING MANUAL."

3. Producte acabatview

3.1 Característiques clau

• Mesura versàtil: Measures insulation resistance, absorption ratio (DAR), polarization index (PI), AC voltage, and low resistance.
• Alt rendiment: Professional-grade integrated circuit design with wide measurement range and high output power.
• Multiple Test Voltages: Offers 100V, 250V, 500V, 1000V, and 2500V test voltage options for insulation resistance.
• Pantalla fàcil d'utilitzar: Large LCD screen with grey-white backlight for easy readability.
• Gestió de dades: Features measurement data retention (HOLD), excessive alarm, and automatic shutdown.
• Construcció duradora: Designed to be shock-resistant and dust-proof, suitable for various electrical equipment testing.
• Automatic Discharge: Includes an automatic discharge function after insulation resistance testing.

3.2 Components i accessoris

Figure 2: The NJTy T-6125 Isolation Tester shown with its carrying case, test leads, and alligator clips.

El paquet normalment inclou:

• NJTy T-6125 Digital Isolation Tester
• Test Leads (Red, Black, Green)
• Clips de cocodril
• Maleta de transport
• Manual d'usuari (aquest document)

Figure 3: Detail showing the large backlit LCD display and the robust, anti-fall plastic shell design of the T-6125.

4. Configuració

4.1 Instal·lació de la bateria

1. Ensure the device is powered off and all test leads are disconnected.
2. Localitzeu la tapa del compartiment de la bateria a la part posterior del provador.
3. Feu servir un tornavís per obrir la tapa del compartiment de la bateria.
4. Insert 8 x 1.5V AA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
5. Securely close the battery compartment cover and fasten the screws.

Figura 4: posterior view of the T-6125, highlighting the battery compartment cover.

Figure 5: The open battery compartment, showing the slots for 8 AA batteries.

4.2 Connexió dels cables de prova

Connect the test leads to the appropriate input terminals on the tester. Ensure a secure connection before proceeding with any measurements.

5. Instruccions de funcionament

5.1 Engegada/apagada

• To power on, rotate the central rotary switch from the "OFF" position to the desired measurement function.
• To power off, rotate the central rotary switch to the "OFF" position.
• The device features an automatic shutdown function after 30 minutes of inactivity to conserve battery life.

Figure 6: Illustration of the 30-minute automatic shutdown feature for battery conservation.

5.2 Mesura de la resistència d'aïllament

1. Assegureu-vos que el circuit a prova estigui desenergitzat i descarregat de manera segura.
2. Connect the test leads to the circuit or component to be tested.
3. Rotate the central switch to one of the insulation resistance test voltage settings (e.g., 250V, 500V, 1000V, 2500V).
4. Premeu el botó PROVA button to initiate the measurement. The display will show the insulation resistance value.
5. After the test, the device will automatically discharge the circuit.
6. Premeu el botó MANTENIM button to retain the displayed measurement. Press again to release.

5.3 Absorption Ratio (DAR) and Polarization Index (PI) Measurement

1. Follow steps 1-3 for insulation resistance measurement.
2. Rotate the central switch to the "DAR/PI" position.
3. Premeu el botó PROVA button. The device will perform timed insulation resistance measurements to calculate DAR and PI.
4. The results will be displayed sequentially.

5.4 AC Voltage Mesura

1. Connecteu els cables de prova a l'AC voltage font.
2. Rotate the central switch to the "ACV" position.
3. L'AC voltage es mostrarà a la pantalla.

5.5 Mesura de baixa resistència

1. Assegureu-vos que el circuit que s'està provant estigui desenergitzat.
2. Connect the test leads to the component for low resistance measurement.
3. Rotate the central switch to the "Low Resistance" position (indicated by Ω).
4. The resistance value will be displayed.

Figure 7: The T-6125 being used in diverse applications such as industrial control panels, telecommunication towers, circuit boards, and automotive electrical systems.

6. Manteniment

• Neteja: Utilitzeu un suau, damp drap per netejar l'exterior del dispositiu. No utilitzeu productes de neteja abrasius ni dissolvents.
• Substitució de la bateria: Replace batteries promptly when the low battery indicator appears. Always use new, identical batteries.
• Emmagatzematge: When not in use for extended periods, remove the batteries to prevent leakage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
• Calibració: Per a ús professional, es recomana una calibració periòdica per part de personal qualificat per garantir la precisió.

7. Solució De Problemes

8. Especificacions

9. Garantia i Suport

Per obtenir informació sobre la garantia i assistència tècnica, consulteu la documentació proporcionada en el moment de la compra o poseu-vos en contacte amb el vostre distribuïdor. Els termes específics de la garantia poden variar segons la regió i el venedor.