Manual de utilizare ANENG MH12/MH13 megohmmetru digital

1. Introducere

The ANENG MH12 and MH13 are advanced digital megohmmeters designed for precise measurement of insulation resistance, polarization index (PI), absorption ratio (DAR), and AC/DC voltage. These instruments are essential tools for electricians, technicians, and engineers to assess the quality and aging condition of insulation in main transformers, motors, cables, and other electrical equipment. The meters feature automatic and manual ranging, a backlit display, and data storage capabilities for efficient and reliable testing.

2. Informații de siguranță

AVERTIZARE! Periculoase Voltage (Risk of electric shock)

Always adhere to safety precautions when using this meter. Improper use can result in electric shock or damage to the instrument. Read this manual thoroughly before operation.

• Ensure the meter is in good working condition before each use.
• Do not operate the meter if it appears damaged or if the test leads are compromised.
• Always wear appropriate personal protective equipment (PPE), including insulated gloves and safety glasses.
• Do not touch the test leads or the circuit under test during measurement.
• Verify that the circuit is de-energized before connecting or disconnecting test leads, unless performing live voltage measurements with extreme caution.
• The meter is rated for 1000V CAT III and 600V CAT IV. Do not exceed these voltage limite.
• Ensure batteries are correctly installed and replaced when the low battery indicator appears.
• The instrument features automatic discharge after insulation resistance tests, but always confirm the circuit is discharged before handling.

3. Caracteristicile produsului

• Măsurarea rezistenței de izolație: Wide range for various applications.
• Polarization Index (PI) Test: Automatically calculates PI to assess insulation quality.
• Absorption Ratio (DAR) Test: Automatically calculates DAR to detect moisture effects on insulation.
• AC / DC Voltage Măsurare: Măsuri voltage de la 10V la 600V.
• Reglare automată și manuală a distanței: Flexible measurement options.
• Backlight Bright Screen: Ensures clear readings in dim environments.
• Păstrarea datelor (HOLD): Freezes the current measurement value on the display.
• 100 Groups of Data Storage: Stores measurement results for later review.
• Oprire automată: Economisește durata de viață a bateriei.
• Descărcare automată: Safely discharges tested circuits after insulation resistance measurements.
• Alertă baterie descărcată: Indică când bateriile trebuie înlocuite.
• Adjustable Supporting Frame: Allows for convenient standing operation.
• Shock-resistant Silicone Material: Oferă protecție împotriva căderilor și impacturilor.
• Signal Shield Wire: Helps eliminate errors caused by leakage and reduces interference.

Figura 1: Pesteview of Meter Functions

4. Configurare

4.1 Instalarea bateriei

The meter is powered by 8 AA batteries (not included). To install or replace batteries:

1. Asigurați-vă că aparatul de măsură este oprit.
2. Localizați compartimentul bateriei de pe spatele dispozitivului.
3. Deschideți capacul compartimentului bateriei.
4. Introduceți 8 baterii AA, respectând polaritatea corectă (+/-) așa cum este indicată în interiorul compartimentului.
5. Închideți bine capacul compartimentului bateriei.

Figura 2: Instalarea bateriei

4.2 Connecting Test Leads and Alligator Clips

The meter comes with test leads and alligator clips for various connections.

1. Align the test pen with the crocodile clip.
2. Insert the test pen into the screw bayonet of the alligator clip.
3. Tighten the test pen clockwise to secure the connection.
4. Connect the test leads to the appropriate input terminals on the meter (LINE, EARTH, AC/DC 600V, MAX 600V).

Figure 3: Alligator Clip Installation

5. Instrucțiuni de utilizare

5.1 Pornire/Oprire

• To power on the device, press and hold the red power button () timp de 2 secunde.
• To power off, press and hold the power button again for 2 seconds. The meter also features automatic shut-down to conserve battery.

5.2 Panoul de funcții de mai susview

Figure 4: Meter Function Panel

The function panel includes:

• Butonul TEST: Initiates insulation resistance tests and discharges the circuit.
• Țineți butonul apasat: Short press to hold data; long press to activate/deactivate backlight.
• Buton SELECT: Switches between ACV and DCV modes, and other functions.
• Buton MEM READ: Accesează datele stocate.
• Săgeți sus/jos: Navigates through stored data or adjusts settings.
• Buton PI/DAR: Initiates Polarization Index or Absorption Ratio tests.

5.3 AC/DC Voltage Măsurare

1. În modul de așteptare, apăsați scurt pe SELECTA buton pentru a introduce volumul ACtage (ACV) measurement.
2. Presa SELECTA again to switch to DC voltage (DCV) measurement.
3. Connect the test leads to the circuit to be measured. For AC voltage, connect to the AC end and the G end. For DC voltage, connect to the DC end and the G end.
4. VoltagIntervalul este de la 10V la 600V.

Figura 5: Volum AC și DCtage Măsurare

5.4 Măsurarea rezistenței de izolație

1. Connect the test leads to both ends of the instrument and the circuit under test.
2. Selectați volumul de ieșire dorittage (e.g., 50V, 100V, 250V, 500V, 1000V for MH12; 250V, 500V/1000V, 2000V/2500V for MH13).
3. Apăsați tasta TEST button to initiate the measurement. The meter will automatically discharge the circuit after the test.

Figure 6: Insulation Resistance Measurement

5.5 Polarization Index (PI) Measurement

The PI test helps judge the quality and aging problems of insulation. It is the ratio of 10-minute insulation resistance to 1-minute insulation resistance.

1. Connect the meter to the equipment as for insulation resistance.
2. Apăsați tasta PI/DAR button to start the PI test. The meter will automatically measure and calculate the PI value.
3. Refer to the judgment standard table for interpretation:

Figure 7: Polarization Index (PI) Measurement

5.6 Absorption Ratio (DAR) Measurement

The DAR test determines if equipment is affected by moisture. It is the ratio of 1-minute insulation resistance to 15-second insulation resistance.

1. Connect the meter to the equipment.
2. Apăsați tasta PI/DAR button (if not already in DAR mode) to start the DAR test. The meter will automatically measure and calculate the DAR value.
3. Refer to the judgment standard table for interpretation:

Figure 8: Absorption Ratio (DAR) Measurement

5.7 Stocarea și reapelarea datelor

• După o măsurare, apăsați butonul ȚINE button to save the current data.
• La view datele stocate, apăsați butonul MEM READ buton.
• Use the up/down arrow buttons to navigate through the 100 groups of stored data.

Figure 9: Data Storage and Recall

5.8 Lumina de fundal

• Apăsați lung pe ȚINE button to turn on or off the LCD backlight. This feature is useful for working in dimly lit environments.

Figure 10: Backlight Feature

6. Întreținere

6.1 Curățare

• Ștergeți contorul cu o cârpă uscată și moale. Nu utilizați substanțe de curățare abrazive sau solvenți.
• Ensure the meter is powered off and disconnected from any circuits before cleaning.

6.2 Înlocuirea bateriei

Replace batteries promptly when the low battery indicator appears on the display to ensure accurate measurements and prevent data loss. Refer to section 4.1 for installation steps.

6.3 Depozitare

• Depozitați glucometrul într-un loc răcoros și uscat, ferit de lumina directă a soarelui și de temperaturi extreme.
• Dacă depozitați pentru o perioadă lungă de timp, scoateți bateriile pentru a preveni scurgerile.
• The meter comes with a carrying case for protection during storage and transport.

Figure 11: Meter with Carrying Case

7. Depanare

• Contorul nu pornește: Verificați instalarea bateriilor și asigurați-vă că bateriile nu sunt descărcate. Înlocuiți-le dacă este necesar.
• Citiri inexacte: Ensure test leads are securely connected and not damaged. Verify the correct measurement mode and voltage range are selected. Clean the test points.
• Afișajul este slab luminat: Activate the backlight by long-pressing the HOLD button. Replace batteries if the issue persists.
• Measurement errors due to leakage: Ensure proper connection of the signal shield wire to the ground end to minimize interference.

Figure 12: Using Signal Shield Wire

8. Sfaturi pentru utilizatori

• For critical insulation tests, perform both PI and DAR measurements to get a comprehensive assessment of insulation health.
• Always start with a lower test voltage and gradually increase if needed, ensuring the equipment under test can handle the voltage.
• Utilize the data storage feature to track insulation degradation over time, which can help predict potential failures.
• The adjustable supporting frame () allows for hands-free operation, improving safety and convenience during measurements.

9. Specificații

9.1 ANENG MH12 Specifications

Figure 13: ANENG MH12 Specifications

9.2 ANENG MH13 Specifications

Figure 14: ANENG MH13 Specifications

9.3 Dimensiuni fizice

MH12 Product Size: 17.2 * 14.0 * 6.2 cm / 6.79 * 5.52 * 2.48 inches

Figure 15: MH12 Dimensions

10. Garanție și asistență

Pentru informații despre garanție, asistență tehnică sau solicitări de service, vă rugăm să contactați distribuitorul sau direct producătorul. Păstrați bonul fiscal ca dovadă a achiziției.