• True Megohmmeter
  • Test voltage combinations of 50 V, 100 V, 250 V, 500 V and 1000 V
  • Insulation measurement to 4000 GΩ (4 TΩ)
  • Direct measurement of DAR and PI values
  • Direct measurement of sample Capacitance
  • Display of test voltage and run time
  • Programmable test run times and PI times
  • Smooth and Alarm functions
  • Automatic test inhibition if live sample >25 V
  • Automatic discharge after use with voltage display
  • Large dual display with time, voltage and measurement
  • Bright blue electrolumenescent backlight
  • Battery powered
  • Auto power-down when not in use
  • Remote operation with optional test probe
  • EN 61010-1, 600V Cat. III
Interested in a FREE demo? Call 1-800-884-4967 or complete this form to submit your request.


The AEMC model 1050 megohmmeter is an innovative, professional-quality, 1000V digital/analog insulation tester. The 1050 is designed to facilitate testing quickly and accurately by incorporating automatic measurement features and user friendly functions.

The AEMC model 1050 megohmmeter has test voltages of 50, 100, 250, 500 and 1000 volts and measures insulation resistance to 4000 GΩ. Measurements are displayed on a large, dual-display LCD with bargraph for quick viewing of changes or trends. Resistance readings are displayed on the larger display, and a smaller display is used for test voltage at the sample, test run times, or alarm set points – all accessible at the press of a button. A family of visual indicators for safety and information also compliments the displays. A bright blue electroluminescent backlight makes for clear readings in dark areas.

AEMC model 1050 megohmmeters automatically provide the DAR and PI ratios directly on the display. User defined PI time intervals may also be programmed. The user may even select DAR or PI functions before the test, and the megohmmeter will stop at the appropriate time and display the results. Test run times from 1 second to 59 minutes are also directly programmable. The tested sample capacitance is available at the end of each insulation resistance test.

For specific applications and operator or equipment safety, test voltages may be disabled to avoid any errors. An automatic test inhibitor prevents testing on live circuits above 25 V. Discharge test voltage may be displayed at the completion of each test.

The AEMC model 1050 megohmmeter is housed in a rugged, double-walled field case with a detachable pouch for storing test leads and other accessories. A memory feature permits storing, recalling and displaying of resistance values taken at user specified intervals during a test.

AEMC Model 1050 megohmmeters ship complete with:

  • Detachable accessory case
  • Test lead set
  • Test probe
  • Batteries
  • Spare fuses
  • User manual

AEMC model 1050 megohmmeter specifications:

Insulation Tests
Test Voltage
50 V 0.002 MΩ to 200 GΩ
100 V 0.004 MΩ to 400 GΩ
250 V 0.01 MΩ to 1000 GΩ (1 TΩ)
500 V 0.02 MΩ to 2000 GΩ (2 TΩ)
1000 V 0.04 MΩ to 4000 GΩ (4 TΩ)
Short Circuit Current < 6 mADC
Accuracy 2 kΩ to 400 GΩ ±5% of reading ± 3 cts
400 GΩ to 4 TΩ ±5% of reading ± 10 cts
DAR (1 min/30 sec) 0.000 to 9.999
PI (10 min/1 min & user programmable) 0.000 to 9.999
Capacitance Check 0.005 to 4.999 µF
Programmable Run Time 1 to 59 min
Smooth Function Yes
Discharge After Test Yes
Discharge Voltage Display Yes
Voltage Tester 0 to 1000 VAC
Voltage Warning Indicator > 25 V
Test Inhibition Yes > 25 V
Guard terminal Yes
Resistance Tests
Measurement Range 0.01 Ω to 400 kΩ
Test Voltage 12.4 VDC max
Short Circuit Current < 6mADC
Accuracy > 400 kΩ ±3% of reading ± 3 cts
Continuity Tests
Range 0.01 to 39.99 Ω
Test Current ≥ 200 mA from 0.01 to 20.00 Ω
Accuracy ±3% of reading ± 4 cts
Display Size 4 x 2.25"
Digital Display Two x 4000-count
Analog Bargraph 31-segments
Backlight Blue electroluminescent
Power Source 8 x 1.5 V C cells
Dimensions 9.45 x 7.28 x 4.33"
Weight 7.5 lbs
Index Protection IP53
Remote Test Probe Operation Yes
Data Storage 20 readings
Reading Intervals 5 sec to 10 min
Test Voltage Display Yes
Elapsed Time Display Yes
Test Voltage Lockout User programmable
Bi-directional Software No
PC Operation Of Megohmmeter No
Safety Rating EN 61010-1, 600 V Cat. III, EN 61557
CE Mark Yes; UL listed


This product can be used in the following applications: