AEMC 1250N 1000V Hand Cranked Megommeter

The Model 1250N 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. The easy hand-cranked operation provides a steady, rectified DC voltage output across the entire range for consistently reliable readings. The Model 1250N has three test voltages for insulation resistance testing: 250, 500 and 1000V, and has a test voltage range for safety checks to confirm the sample is fully discharged and not connected to an energized circuit. Test voltages are generated in full across the entire measurement range.

Features:

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

  
  Technical Specifications:
  
  INSULATION TESTS
  

  	Model 1250
  DC Test Voltages:	250, 500,1000V
  Megohm Ranges:	250V: 1-11 MOhms             11 to 500 MOhms 500 V: 1 to 11MOhms             11 to 500 MOhms 1000V: 10 to 110 MOhms             110 to 5000 MOhms
  Short Circuit Current:	5mA
  Accuracy:	2%
  Charging Time:	0.2 to 0.5 sec/uF
  Discharging Time:	8 sec/uF
  Scale:	3”, Direct Reading

  
  RESISTANCE TESTS
  

  	Model 1250
  DC Test Voltage:	1 mA Constant, 600V Max
  Kilohm Range:	0 to 45 kOhms, 45 to 500 kOhms
  Accuracy:	2.5% of Reading Typical

  
  VOLTAGE TESTS (SAFETY CHECK)
  

  	Model 1250
  Voltage Range:	0 to 600 V AC/DC
  Accuracy:	3% of Full Scale

  
  CONTINUITY TESTS
  

  	Model 1250
  DC Test Voltage:	5 mA Constant, 10V Max
  Ohm Range:	0 to 9 Ohms, 9 to 100 Ohms Auto
  Accuracy:	2% FullScale

  
  BOTH MODEL FEATURES
  

  Power Supply:	Hand Crank Brushless Alternator
  Dielectric Test:	2000 VAC, 50/60 Hz,1 Minute
  Meter Movement:	Rugged Taut Band
  Overload:	600 Vrms Between Terminals
  Dimensions:	4.7x4.7x5.1”, 3.3 lbs.
  Weight:	14.8 Ibs
  Temperature Range:	-10 to +50 C
  Safety:	Meets IEC529, Mil-T-38800D. IEC51

  
  Instrument includes carry case for lead, test lead set with clips and hard case cover.