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AEMC 1250N 1326.02 1000V Hand Cranked Analog Megohmmeter Instruments
Product Information

1250N Datasheet 1250N Datasheet
  1250N Datasheet 1250N Usermanual
  Megohmmeter Comparison Chart Megohmmeter Comparison Chart
  Telephone Cable Measurements Telephone Cable Measurements
  9 Lead Insulation Motor Testing 9 Lead Insulation Motor Testing
  Dielectric Discharge Testing Dielectric Discharge Testing
  Step Voltage Testing Step Voltage Testing
  Classification Of Motors Classification Of Motors
  Insulation Resistance Testing Insulation Resistance Testing

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AEMC 1250N 1326.02 1000V Hand Cranked Analog Megohmmeter

The AEMC 1250N 1000V Megohmmeter is a, self contained, hand cranked compact Megohmmeter that is a dependable instrument


The 1250N is engineered for a wide range of field and plant service applications.The easy hand cranked operation provides a stable, rectified DC voltage output across the whole range for reliable readings on a consistent basis.The 1250N has 3 test voltages for insulation resistance testing: 250, 500 and 1000 Volts. It has a test voltage range for safety checks so it can confirm the sample is not connected and discharged to an energized circuit. Voltages Tested are generated across the entire measurement range in full. 


1250N Features

  • Three constant test voltages: 250, 500, and 1000 Volts.
  • Constant test voltage across measurement range ensures accurate and realistic tests
  • Auto-ranging M Ohm Ranges
  • Designed for harsh environments: mining offshore, industrial, heavy-duty field, and military use
  • Extra rugged aluminum case
  • O-ring sealed against water, dust, and rain
  • Aluminum lid
  • Compact, self-contained package; folding crank
  • Four terminals including ground and guard
  • Large direct-reading scale
  • 600 Volt test range (safety check)


  • Acceptance testing
  • Preventive maintenance
  • Cables, Switchgears, motors and electrical wiring installations
  • Continuity checks
  • Industrial and Domestic contracting



Insulation Tests
Test Voltage 250 / 500 / 1000 Volts DC
Measurement Range 1 to 11 MW, 11 to 500 MW / 10 to 110 MW, 110 to 5000 MW
Short Circuit Current 5 mA approximately
Accuracy 2 percent of full scale
Automatic Discharge 8 s/µF
Charging Time 0.2 s/µF / 0.5 s/µF
Voltage Warning Indicator Amber LED indicates crank speed and proper test voltage
Voltage Tests
Measurement Range 0 - 600 Volts AC
Accuracy 3 percent of full scale
Analog Display Rugged taut band suspension
General Specifications
Power Source Hand cranked
Dielectric Test 2000 Volts 50-60 Hz, between (-), (+), and ground terminals
Dimensions 4.7 x 4.7 x 5.1" (120 x 120 x 130 mm)
Weight 3.3 lbs (1.5 kg)
Temperature Range 64 ° to 75 °F (18° to 24°C), 30 - 50 Percent RH
Operating Range 14° to 122°F (-10° to 50°C), 0 - 80 Percent RH
Storage Range -4°F to 176°F (-20° to 80°C), 0 - 90 Percent  RH
Cast aluminum alloy case and lod painted safety yellow, with heavy duty gray polycarbonate front panel;
O-ring sealed between case and front panel; sealed against ; folding crank
"+" Line (red); "-" earth (black); accept standard 4mm safety bannana plugs; ground accepts
 4 mm spade lugs or bannana
Safety Reference Specifications
Safety Ratings IP54 with lid, IP52 without lid, VDE413 part 1/4 except f, IEC414, IEC529, MIL-T-38800D, IEC51
Agency Approvals CE Mark
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