AEMC Model 3711 Clamp-On Ground Resistance Tester User Manual

Inngangur

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.

Öryggisupplýsingar

VIÐVÖRUN: 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.
• Gakktu úr skugga um að rafhlöðuhólfið sé vel lokað fyrir notkun.
• Forðist snertingu við spennuhafandi rafrásir meðan á mælingum stendur.
• The instrument is double-insulated for enhanced safety.

Hvað er í kassanum

Gakktu úr skugga um að allir hlutir séu til staðar við upppakkningu:

• AEMC Ground Resistance Tester Model 3711
• Calibration Check Loop, 25Ω
• Harður burðartaska
• 9V alkalín rafhlaða
• Notendahandbók (þetta skjal)

Vara lokiðview

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 Kjálkar: 1.25" opening to accommodate ground rods and cables up to 1000kcmil.
• LCD skjár: Digital readout for resistance and current measurements.
• Stjórnhnappar: For power, data hold, and mode selection.
• Rafhlöðuhólf: Located at the rear for a 9V battery.

Uppsetning og uppsetning rafhlöðu

1. Open the battery compartment cover on the rear of the instrument.
2. Insert the supplied 9V Alkaline battery, observing correct polarity.
3. Lokaðu rafhlöðuhólfinu tryggilega.
4. Press the "ON" button to power on the device. The display should illuminate.

Notkunarleiðbeiningar

Ground Resistance Measurement

1. Power on the AEMC 3711.
2. Opnaðu clamp jaws by pressing the release lever.
3. Settu 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.

Núverandi mæling

1. Power on the AEMC 3711.
2. Opnaðu clamp kjálka.
3. Settu 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) eða 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).

Viðhald og kvörðun

Þrif

Hreinsaðu tækið með mjúku, damp klút. Ekki nota slípiefni eða leysiefni.

Skipt um rafhlöðu

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

Kvörðunarpróf

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.

Geymsla

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.

Úrræðaleit

• No Display/Instrument Not Powering On: Athugið uppsetningu rafhlöðunnar og gætið þess að hún sé nægilega hleðin. Skiptið um hana ef þörf krefur.
• Óstöðug lestur: Gakktu úr skugga um að clamp jaws are fully closed around the conductor. Verify there is no excessive electrical noise in the environment.
• „OL“ eða ofhleðsluvísbending: 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.
• Ónákvæmar lestur: Perform a calibration check using the 25Ω loop. If the issue persists, contact technical support.

Tæknilýsing

Ábyrgð og stuðningur

For warranty information, technical support, or service inquiries, please refer to the official AEMC Instruments webvefsíðu eða hafið samband við þjónustuver þeirra. Geymið kaupkvittunina vegna ábyrgðarkröfu.