AEMC Model 3711 Clamp-On Ground Resistance Tester User Manual

Introduzione

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.

Informazioni di sicurezza

ATTENZIONE: 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.
• Ùn aduprate micca u strumentu s'ellu pare dannighjatu o funziona in modu anormale.
• Ensure the battery compartment is securely closed before use.
• Avoid contact with live circuits during measurement.
• The instrument is double-insulated for enhanced safety.

Chì ci hè in u Box

Verificate chì tutti l'articuli sò presenti à u mumentu di u disimballaggio:

• AEMC Ground Resistance Tester Model 3711
• Calibration Check Loop, 25Ω
• Custodia di trasportu duru
• Batteria alcalina 9V
• Manuale d'uso (stu documentu)

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 mandibula : 1.25" opening to accommodate ground rods and cables up to 1000kcmil.
• Display LCD: Digital readout for resistance and current measurements.
• Buttuni di cuntrollu: For power, data hold, and mode selection.
• Compartimentu di batterie: Located at the rear for a 9V battery.

Cunfigurazione è installazione di a batteria

1. Aprite u coperchiu di u compartimentu di e batterie situatu daretu à u strumentu.
2. Insert the supplied 9V Alkaline battery, observing correct polarity.
3. Chiudere in modu sicuru u coperchiu di u compartimentu di a batteria.
4. Press the "ON" button to power on the device. The display should illuminate.

Istruzzioni di funziunamentu

Ground Resistance Measurement

1. Power on the AEMC 3711.
2. Aprite u clamp jaws by pressing the release lever.
3. Pone u 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.

Misurazione attuale

1. Power on the AEMC 3711.
2. Aprite u clamp mascelle.
3. Pone u 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) o 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).

Manutenzione è calibrazione

Pulizia

Pulite l'instrumentu cù un soffiu, damp tela. Ùn aduprate micca detergenti abrasivi o solventi.

Sustituzione di batterie

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

Verificazione di calibrazione

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.

Storage

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.

Risoluzione di prublemi

• No Display/Instrument Not Powering On: Check battery installation and ensure the battery has sufficient charge. Replace if necessary.
• Letture instabili: Assicuratevi chì u clamp jaws are fully closed around the conductor. Verify there is no excessive electrical noise in the environment.
• "OL" o Indicazione di sovraccaricu: 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.
• Letture inaccurate: Perform a calibration check using the 25Ω loop. If the issue persists, contact technical support.

Specificazioni

Garanzia è Supportu

For warranty information, technical support, or service inquiries, please refer to the official AEMC Instruments websitu o cuntattate u so serviziu clienti. Cunservate a vostra ricevuta d'acquistu per e richieste di garanzia.