AEMC Model 3711 Clamp-On Ground Resistance Tester User Manual

Uvod

The AEMC Model 3711 is a portable clamp-on ground resistance tester designed for measuring electrical ground rod and grid resistance in multi-grounded systems. This instrument offers a non-intrusive method for testing without the need for auxiliary rods or disconnecting the ground system. It also measures leakage, neutral, and phase currents, providing a comprehensive solution for electrical system analysis.

Sigurnosne informacije

UPOZORENJE: Always read and understand all safety instructions before operating this instrument. Failure to do so may result in serious injury or death.

• This instrument is rated CAT III, indicating its suitability for measurements in building installations.
• Adhere to all local and national safety codes and regulations.
• Do not use the instrument if it appears damaged or is operating abnormally.
• Prije upotrebe provjerite je li odjeljak za baterije sigurno zatvoren.
• Avoid contact with live circuits during measurement.
• The instrument is double-insulated for enhanced safety.

Šta je u kutiji

Prilikom raspakivanja provjerite da li su svi artikli prisutni:

• AEMC Ground Resistance Tester Model 3711
• Calibration Check Loop, 25Ω
• Tvrda torbica
• 9V alkalna baterija
• Korisnički priručnik (ovaj dokument)

Product Overview

Image: The AEMC Model 3711 Clamp-On Ground Resistance Tester. This image displays the device with its red clamp jaws open, a black body, and a green digital display showing "9.8 Ω". Control buttons are visible below the display.

The AEMC Model 3711 features an ergonomic design for one-handed operation. Its robust polycarbonate construction ensures durability for outdoor use. Key components include:

• Clamp čeljusti: 1.25" opening to accommodate ground rods and cables up to 1000kcmil.
• LCD ekran: Digital readout for resistance and current measurements.
• Kontrolna dugmad: For power, data hold, and mode selection.
• Pretinac za baterije: Located at the rear for a 9V battery.

Postavljanje i ugradnja baterija

1. Otvorite poklopac pretinca za baterije na stražnjoj strani instrumenta.
2. Insert the supplied 9V Alkaline battery, observing correct polarity.
3. Čvrsto zatvorite poklopac odeljka za baterije.
4. Press the "ON" button to power on the device. The display should illuminate.

Uputstvo za upotrebu

Ground Resistance Measurement

1. Power on the AEMC 3711.
2. Otvorite clamp jaws by pressing the release lever.
3. Postavite clamp around the ground conductor or rod to be tested, ensuring the jaws are fully closed.
4. The instrument will automatically measure and display the ground resistance in Ohms (Ω).
5. For stable readings, allow approximately one second for the measurement to settle.
6. To hold the current reading on the display, press the "HOLD" button. Press again to release.

Current Measurement

1. Power on the AEMC 3711.
2. Otvorite clamp čeljusti.
3. Postavite clamp around the conductor carrying the current to be measured (leakage, neutral, or phase current). Ensure the jaws are fully closed.
4. The instrument will automatically measure and display the current in Amperes (A) ili milliAmperes (mA).
5. The current measurement function provides direct readings for leakage current flowing to ground or circulating in ground loops (down to 1mA) and neutral/phase currents (up to 30A RMS).

Održavanje i kalibracija

Čišćenje

Očistite instrument mekom, damp tkanina. Nemojte koristiti abrazivna sredstva za čišćenje ili rastvarače.

Zamjena baterije

When the low battery indicator appears on the display, replace the 9V battery as described in the "Setup and Battery Installation" section.

Provjera kalibracije

Use the supplied 25Ω calibration check loop to verify the instrument's accuracy periodically. Clamp the tester around the loop; the reading should be approximately 25Ω. If the reading deviates significantly, contact AEMC customer support for service.

Skladištenje

Store the instrument in its hard carrying case in a dry, cool environment when not in use. Remove the battery if storing for extended periods.

Rješavanje problema

• No Display/Instrument Not Powering On: Provjerite ugradnju baterije i uvjerite se da je baterija dovoljno napunjena. Zamijenite je ako je potrebno.
• Nestabilna očitanja: Osigurajte clamp jaws are fully closed around the conductor. Verify there is no excessive electrical noise in the environment.
• "OL" ili indikacija preopterećenja: The measured value exceeds the instrument's range. Ensure the correct measurement function is selected or the circuit parameters are within the device's limits.
• Netačna očitavanja: Perform a calibration check using the 25Ω loop. If the issue persists, contact technical support.

Specifikacije

Garancija i podrška

For warranty information, technical support, or service inquiries, please refer to the official AEMC Instruments webweb-mjesto ili kontaktirajte njihovu službu za korisnike. Sačuvajte račun za kupovinu u slučaju reklamacije.