AEMC Model 3711 Clamp-接地抵抗テスター ユーザーマニュアル

導入

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.

安全情報

警告： 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.
• 機器が損傷しているように見える場合や異常な動作をしている場合には、機器を使用しないでください。
• 使用する前に、電池ボックスがしっかりと閉まっていることを確認してください。
• Avoid contact with live circuits during measurement.
• The instrument is double-insulated for enhanced safety.

箱の中身

開梱時にすべてのアイテムが揃っていることを確認します。

• AEMC Ground Resistance Tester Model 3711
• Calibration Check Loop, 25Ω
• ハードキャリングケース
• 9Vアルカリ電池
• ユーザーマニュアル（このドキュメント）

製品終了view

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 ジョーズ： 1.25" opening to accommodate ground rods and cables up to 1000kcmil.
• LCDディスプレイ: Digital readout for resistance and current measurements.
• コントロールボタン: For power, data hold, and mode selection.
• バッテリーコンパートメント: Located at the rear for a 9V battery.

セットアップとバッテリーの取り付け

1. Open the battery compartment cover on the rear of the instrument.
2. Insert the supplied 9V Alkaline battery, observing correct polarity.
3. 電池カバーをしっかりと閉じてください。
4. Press the "ON" button to power on the device. The display should illuminate.

操作手順

Ground Resistance Measurement

1. Power on the AEMC 3711.
2. clを開くamp リリースレバーを押すとジョーが外れます。
3. clを配置するamp 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.

電流測定

1. Power on the AEMC 3711.
2. clを開くamp あご。
3. clを配置するamp 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) またはミリAmpエレス（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).

メンテナンスと校正

クリーニング

器具を柔らかい布できれいにします。amp 布で拭いてください。研磨剤や溶剤は使用しないでください。

バッテリー交換

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

校正チェック

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.

ストレージ

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.

トラブルシューティング

• No Display/Instrument Not Powering On: バッテリーの取り付けを確認し、バッテリーが十分に充電されていることを確認してください。必要に応じて交換してください。
• 不安定な読み取り: clを確認してくださいamp jaws are fully closed around the conductor. Verify there is no excessive electrical noise in the environment.
• 「OL」または過負荷表示: 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.
• 不正確な読み取り: Perform a calibration check using the 25Ω loop. If the issue persists, contact technical support.

仕様

保証とサポート

For warranty information, technical support, or service inquiries, please refer to the official AEMC Instruments web公式サイトをご覧いただくか、カスタマーサービス部門にお問い合わせください。保証請求のために購入時のレシートを保管してください。