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SKU: 2126.52 Categories: , Tag:



The AEMC 6503 (2126.52) Hand-Cranked 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. The Model 6503 has three test voltages for insulation resistance testing: 250V, 500V and 1000V. Test voltages are generated in full across the entire measurement range.


AC Voltage Measurement
Range0 to 600VAC
Accuracy±3% of Scale
Frequency Range45 to 450Hz
Input Impedance100kΩ (approx)
Insulation Measurement
Test Voltage / Resistance Range250V: 1 to 11MΩ; 11 to 500MΩ
500V: 1 to 11MΩ; 11 to 500MΩ
1000V: 10 to 110MΩ; 110 to 5000MΩ
Measurement Accuracy2.5% of Scale Length
Short Circuit Current5mA (max)
Auto Discharge8s/µF
Power SupplyHand-cranked, test voltage reached at approx 140rpm
Dimensions4.7 x 4.4 x 5.3” (120 x 111 x 135mm) with lid
Weight2.5 lb (1.1kg)
Operating Temperature14° to +113°F (-10° to +45°C); 75% RH
Storage Temperature-4° to +176°F (-20° to +80°C); 90%
IP RatingIP 54 with lid; IP 52 without lid
Safety ComplianceEN 61010-1, 600V CAT II, 300V CAT III, Pollution Degree 2

Product Features

  • Test voltage of 250V, 500V, and 1000V
  • Insulation measurements to 5000MΩ
  • LED indicates constant voltage output and proper cranked speed
  • Automatic discharge when measurement is finished
  • Auto-ranging with dual scale operation for better sensitivity and easier readings
  • Compact self-contained package with folded crank
  • Large direct reading scale
  • EN 61010-1, 600V CAT II, 300V CAT III