Megger MIT400/2 Insulation & Continuity Tester

소개

This user manual provides essential information for the safe and effective operation of the Megger MIT400/2 Insulation & Continuity Tester, model 1006-719. This versatile instrument is designed for a wide range of applications, including electrical installations, cable testing, motor testing, automotive diagnostics, ESD measurements, panel building, avionics, and general maintenance.

The MIT400/2 features enhanced insulation testing with feedback-controlled test voltages, limiting over-voltage to 2%. It also offers a variable voltage range from 250 V to 1000 V in 10 V steps for specific application requirements. Continuity testing is significantly faster, with an autoranging function from 0.01 ̑ to 1.0 M̑, and retains 200 mA and 20 mA test options. The redesigned unit boasts an over-moulded case for increased protection and an IP54 weatherproof rating.

안전 정보

Always adhere to local and national safety regulations when using electrical test equipment. Failure to follow these safety guidelines may result in injury, damage to the instrument, or damage to the equipment under test.

• 사용하기 전에 기기가 제대로 작동하는지 확인하십시오.
• Do not use the tester if it appears damaged or if the battery compartment is open.
• Always disconnect power from the circuit under test before making connections for insulation or continuity measurements.
• Use only test leads supplied or recommended by Megger.
• Be aware of live circuits and potential shock hazards.
• Do not operate the instrument in wet conditions or explosive atmospheres.
• Refer to the full safety instructions in the comprehensive manual for detailed precautions.

제품 끝view

그림 1: 전면 view of the Megger MIT400/2 Insulation & Continuity Tester, showing the display, control buttons, and rotary selector switch.

The Megger MIT400/2 features a clear digital display for readings and settings. Key controls include:

• 표시하다: Shows insulation resistance (G̑), voltage (V), and continuity (̑) readings. Includes an analog arc for quick visual indication.
• TRMS Button: Toggles True RMS measurement mode.
• 백라이트 버튼: 어두운 환경에서 시인성을 높이기 위해 디스플레이 백라이트를 켜거나 끕니다.
• 사운드 버튼: Controls audible alerts, such as continuity beepers.
• TEST Button (Yellow): Initiates an insulation or continuity test.
• Lock Button (Red): Locks the test button for continuous testing, useful for hands-free operation during insulation tests.
• 회전식 선택 스위치: Used to select the desired measurement function:
  • M̑ (Insulation Resistance): Selects insulation test voltages (e.g., 250V, 500V, 1kV).
  • V(권tag이자형): AC/DC 볼륨 측정tage.
  • OFF : Powers off the instrument.
  • ̑ (Continuity): Measures resistance and performs continuity checks.
  • Wrench/Tool Icon: Indicates a special function or setting mode.

설정

배터리 설치

The MIT400/2 is powered by 6 AA batteries. The battery compartment is located at the rear of the unit and features separate fuse access.

1. Ensure the instrument is switched to the OFF position.
2. 장치 뒷면에서 배터리 덮개를 찾으세요.
3. 덮개를 나사로 풀거나 걸쇠를 풀어서 제거하세요.
4. Insert 6 AA batteries, observing the correct polarity indicated inside the compartment.
5. 배터리함 덮개를 다시 씌우고 단단히 고정하십시오.

초기 점검

Before first use, or after battery replacement, perform a quick functional check to ensure the unit powers on and the display is clear.

작동 지침

Insulation Testing (M̑)

The MIT400/2 offers insulation testing up to 1000 V and 200 G̑ range with stabilized test voltage.

1. Turn the rotary selector switch to the desired M̑ voltage range (e.g., 250V, 500V, 1kV). A variable range allows intermediate voltages from 250 V to 1000 V in 10 V steps.
2. Connect the test leads to the circuit or component under test, ensuring proper polarity.
3. Press and hold the yellow 시험 button to initiate the test. The display will show the insulation resistance.
4. For continuous testing, press the red 잠그다 button after pressing 시험. 누르다 시험 다시 잠금 해제하려면.
5. 릴리스하다 시험 버튼을 누르면 측정이 중단됩니다.

Continuity Testing (̑)

The instrument provides fast autoranging continuity testing from 0.01 ̑ to 1.0 M̑, with 200 mA and 20 mA test options.

1. Turn the rotary selector switch to the ̑ position.
2. 테스트 리드를 회로 또는 부품에 연결하십시오.
3. The instrument will automatically display the resistance. If continuity is detected within the set threshold, an audible beep may sound (if enabled).
4. 사용하세요 소리 button to toggle the continuity beeper.

권tage 측정(V)

교류 또는 직류 전압을 측정합니다.tage.

1. Turn the rotary selector switch to the V position.
2. 테스트 리드를 볼륨 양단에 연결하세요tag출처.
3. 디스플레이에는 측정된 부피가 표시됩니다.tage.
4. 를 누르세요 TRMS button to toggle between True RMS and average sensing for AC voltag측정.

디스플레이 백라이트

를 누르세요 백라이트 button to illuminate the display for better readability in dimly lit environments. Press again to turn off.

유지

청소

기기를 정기적으로 청소하세요.amp cloth and mild detergent. Do not use abrasive cleaners or solvents. Ensure the unit is dry before storage or use.

배터리 교체

When the low battery indicator appears on the display, replace all 6 AA batteries as described in the "Battery Installation" section. Always use fresh, high-quality batteries.

퓨즈 액세스

The MIT400/2 features separate fuse access within the battery compartment. Refer to the full service manual for fuse specifications and replacement procedures.

구경 측정

Your Megger MIT400/2 is calibrated prior to shipment and comes with a new NIST-traceable calibration certificate with data. This ensures the instrument meets manufacturer's specifications and is ready for use, meeting most quality system standards. Regular calibration by qualified personnel is recommended to maintain accuracy.

문제 해결

• 디스플레이 없음/장치 전원 켜지지 않음: Check battery installation and ensure batteries are fresh. Verify the rotary switch is not in the OFF position.
• 부정확한 판독: Ensure test leads are properly connected and not damaged. Verify the correct measurement function is selected. Consider recalibration if issues persist.
• 연속성 알림음이 작동하지 않습니다: Check if the sound function is enabled using the 소리 단추.
• Test Button Not Responding: Ensure the unit is not in a locked state (check the red lock indicator).

For more complex issues, contact Megger customer support or a qualified service technician.

명세서

보증 및 지원

For information regarding product warranty, technical support, or service, please contact Megger directly. Refer to the official Megger website or your purchase documentation for contact details and warranty terms specific to your region.

제조업체: 절연 저항계