User Manual

DMEG3 • Insulation Resistance Tester
Copyright © 2007 UEi Specifications are subject to change without notice. L647 1/07
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The DMEG3 Megohmeter allows you to predict,
prevent and identify insulation failures that can
cause appliance failure, stop production, create
power problems and even put lives at risk. It quickly
tests insulation integrity on motors, power
distribution systems and other installed wiring.
The DMEG3
has the following features:
• Large digital display that shows the test function and measured value
• 600V AC measurement capability
• Autoranging insulation resistance ranges 0 - 2000MΩ
• Three test-voltage ranges (250, 500, 1000V DC)
• Live circuit warning light
• Fuse protected
• Precision resistance 0.01Ω
• 200 mA short-circuit continuity test current for high accuracy
• Precision, low resistance test leads (1000 Volt CAT III rated)
• Audible continuity
• Green LED power-on indicator
• Low battery indication/detection
• Maintains rated voltage on cables with up to 1 mA leak-rate
• Automatic post-test cable discharge
• Rugged compact case with protective cover
• Three year limited warranty
Standard Accessories:
Test Leads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 pair
Batteries 1.5V, “AA” Alkaline (R6) . . . . . . . . . . . . . . . . . .8 pieces
Fuse 0.5A 250V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 piece
Instruction Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 booklet
Alligator Clips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 set
Hard Carrying Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 piece
Specifications
Insulation Resistance
Range Resolution Accuracy
0 - 200 MΩ (250V, 500V DC ±10%) 1 count = 100kΩ ±1.5% ±5 dgt
0 - 2000 MΩ (1000V DC ±10%) 1 count = 1MΩ ±3% ±3 dgt (0 - 1000 MΩ)
±5% ±5 dgt (0 - 2000 MΩ)
Sustained Current: 1mA DC min @ 0.25MΩ for 250V range
1mA DC min @ 0.5MΩ for 500V range
1mA DC min @ 1MΩ for 1000mA
Power consumption: Max current approximately 250mA
Function Range Resolution Accuracy Frequency Range
AC Voltage 0 - 600V 1V ±1.5% ±3 dgt 40 - 120Hz
Continuity 0 - 20Ω 0.01Ω ±1.5% ±5 dgt
0 - 2000Ω 1Ω ±1.5% ±3 dgt
Open Circuit terminal voltage: 4V DC min.
Short Circuit terminal voltage: 210mA DC min.
Power consumption: Max current approximately 160mA
Audible alarm: Sounds @ <10Ω in 20Ω range
Safety requirements: IEC-1010 safety requirements category III
Dimensions: 6.7 x 6.5 x 3.6 inches (170 x 165 x 92 mm)
Weight: 2.1 lb. (batteries included)
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