• Test voltage of 500 V
  • Insulation measurements of 200 MΩ
  • LED indicates constant voltage output and proper crank speed
  • Automatic discharge when measurement is finished
  • Auto-ranging/dual scale operation for better sensitivity and easier readings
  • Extra rugged cast aluminum case; O-ring sealed against rain, water and dust; aluminum lid
  • Designed for harsh environments - marine, mining, heavy-duty field, industrial and military use
  • Compact self-contained package; folded crank
  • Voltage displayed prior to, during and at the end of test
  • Large direct-reading scale
Interested in a FREE demo? Call 1-800-884-4967 or complete this form to submit your request.


The AEMC Model 6501 megohmmeter is a compact, self-contained, hand-cranked true megohmmeter. This practical and dependable instrument is designed for a broad range of plant and field service applications, such as acceptance testing and preventive maintenance of wiring, cables, switchgear and motors.

The easy hand-cranked operation provides a steady, DC voltage output across the entire range for consistently reliable readings. In addition to insulation resistance testing at 500 V, the Model 6501 also permits resistance testing to 500 kΩ and continuity testing to 100 Ω. A 600 V test voltage range is provided to perform safety checks to confirm that the sample is fully discharged and not connected to an energized circuit.

The AEMC Model 6501 megohmmeter has a unique auto-ranging feature which expands the scale ten times. When the pointer reaches near the end of scale, the auto-ranging feature activates, returning the pointer to the beginning of the scale with the x10 red LED indicator on. Insulation resistance is indicated with a rugged taut-band meter movement on a logarithmic scale. The indicator scale is large and easy-to-read, and has a direct reading on all ranges. An amber LED on the front panel illuminates when the proper crank speed is attained, indicating the presence of the selected output.

The AEMC Model 6501 megohmmeter ships complete with:

  • Set of test leads
  • Clips
  • Test probe

AEMC Model 6501 Megohmmeter Specifications

Insulation Tests
Test Voltage 0.5 up to 200 MΩ
Short Circuit Current 5mA (max)
Accuracy 2.5% of Scale Length
Automatic Discharge 5 s/µF
Charging Time 0.5 s/µF
Resistance Tests
Measurement Range 0 to 45kΩ
45 to 500 kΩ
DC Test Current 1 mA constant, 500 V max
Accuracy 2.5% of Scale Length
Charging Time 0.5 s/µF
Discharging Time 5 s/µF
Continuity Tests
Test Voltage 5 mA constant, 10 V max
Measurement Range 0 to 9 Ω
9 to 100 Ω
Accuracy 2.5% of Scale Length
Fuse Protection 0.2 A, 250 V, fast-blow, 5 x 20mm
Voltage Tests/Safety Check
Voltage Range 0 to 600 VAC
Frequency 45 to 450 Hz
Accuracy 3% of Scale
Scale Direct reading on all ranges; 3" (76mm), black on white


This product can be used in the following applications: