Introduzzjoni
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.
Informazzjoni dwar is-Sigurtà
TWISSIJA: 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.
- Tużax l-istrument jekk jidher li għandu ħsara jew qed jaħdem b'mod mhux normali.
- Kun żgur li l-kompartiment tal-batterija jkun magħluq sew qabel l-użu.
- Avoid contact with live circuits during measurement.
- The instrument is double-insulated for enhanced safety.
X'hemm fil-Kaxxa
Iċċekkja li l-oġġetti kollha huma preżenti meta tiftaħ il-pakkett:
- AEMC Ground Resistance Tester Model 3711
- Calibration Check Loop, 25Ω
- Każ tal-Ġarr iebes
- Batterija alkalina 9V
- Manwal għall-Utent (dan id-dokument)
Prodott 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 Xedaq: 1.25" opening to accommodate ground rods and cables up to 1000kcmil.
- Display LCD: Digital readout for resistance and current measurements.
- Buttuni tal-Kontroll: For power, data hold, and mode selection.
- Kompartiment tal-batterija: Located at the rear for a 9V battery.
Konfigurazzjoni u Installazzjoni tal-Batterija
- Open the battery compartment cover on the rear of the instrument.
- Insert the supplied 9V Alkaline battery, observing correct polarity.
- Agħlaq l-għatu tal-kompartiment tal-batterija sew.
- Press the "ON" button to power on the device. The display should illuminate.
Istruzzjonijiet Operattivi
Ground Resistance Measurement
- Power on the AEMC 3711.
- Iftaħ il-clamp jaws by pressing the release lever.
- Poġġi l-clamp around the ground conductor or rod to be tested, ensuring the jaws are fully closed.
- The instrument will automatically measure and display the ground resistance in Ohms (Ω).
- For stable readings, allow approximately one second for the measurement to settle.
- To hold the current reading on the display, press the "HOLD" button. Press again to release.
Kejl Kurrenti
- Power on the AEMC 3711.
- Iftaħ il-clamp xedaq.
- Poġġi l-clamp around the conductor carrying the current to be measured (leakage, neutral, or phase current). Ensure the jaws are fully closed.
- The instrument will automatically measure and display the current in Amperes (A) jew milliAmperes (mA).
- 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).
Manutenzjoni u Kalibrazzjoni
Tindif
Naddaf l-istrument b'artab, damp drapp. Tużax tindif jew solventi li joborxu.
Sostituzzjoni tal-batterija
When the low battery indicator appears on the display, replace the 9V battery as described in the "Setup and Battery Installation" section.
Kontroll tal-Kalibrazzjoni
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.
Ħażna
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.
Issolvi l-problemi
- No Display/Instrument Not Powering On: Iċċekkja l-installazzjoni tal-batterija u kun żgur li l-batterija għandha biżżejjed ċarġ. Ibdel jekk meħtieġ.
- Qari Instabbli: Żgura li l-clamp jaws are fully closed around the conductor. Verify there is no excessive electrical noise in the environment.
- "OL" jew Indikazzjoni ta' Tagħbija żejda: 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.
- Qari mhux eżatt: Perform a calibration check using the 25Ω loop. If the issue persists, contact technical support.
Speċifikazzjonijiet
| Parametru | Valur |
|---|---|
| Ground Resistance Range | Autoranging 0.01 to 1200Ω |
| Firxa tal-Kejl kurrenti | Autoranging 1mA to 30.00A RMS |
| Resistance Measuring Frequency | 2403Hz |
| Current Measuring Frequency | 47 sa 800Hz |
| Accuracy (Resistance) | ±2% reading ±0.02Ω (up to 25% of reading for 600-1200Ω) |
| Temperatura operattiva | -10 sa 55°C (14 sa 131°F) |
| Sors tal-Enerġija | batterija 9V (inkluża) |
| Piż | 1kg (2.2lbs) |
| Dimensjonijiet (H x W x D) | 235 x 100 x 55mm (9.25 x 3.94 x 2.17 pulzieri) |
| Ftuħ tax-xedaq | 1.25 pulzieri |
| Klassifikazzjonijiet tas-Sigurtà | EN 61010, CAT III, UL approved, CE marked |
Garanzija u Appoġġ
For warranty information, technical support, or service inquiries, please refer to the official AEMC Instruments webis-sit jew ikkuntattja lid-dipartiment tas-servizz tal-konsumatur tagħhom. Żomm l-irċevuta tax-xiri tiegħek għal talbiet ta’ garanzija.
