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Megger DET2/2 High Resolution Earth Tester
Includes: Mains supply lead for battery charging & Megger DET2/2 operating instruction book.
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The Megger DET2/2 digital ground resistance tester provides a wide resistance range from 0.010 Ω to 19.99 kilohms for testing larger or more complex grounding systems and for difficult testing environments, with ±0.5% accuracy and 0.001 Ω resolution. Microprocessor control and advanced filtering simplify testing in environments with high levels of interference.
The DET2 uses the four terminal method of measurement which eliminates the resistance of the current circuit from the measurement. The circuit design ensures that the resistance of the potential circuit does not affect the measurement during practical testing. The Megger DET 2/2 is built into a robust plastic case and has its four terminals, equipped for spade or 4 mm connectors, mounted on the front panel.
The instrument is microprocessor controlled and provides a flexible, ‘user-friendly’ approach to earth testing by giving good error detection capabilities and full test information on a large easily readable alpha-numeric display. A simple key pad can be used to adjust the test frequency, the test current level and the filtering so that adverse conditions influencing the test may be overcome.
The Megger DET2/2 is built into a robust plastic case and has its four terminals, equipped for spade or 4 mm connectors, mounted on the front panel.
Accurately measures ground resistance under the most demanding conditions.
High resolution - 0.001 Ω with autoranging.
50V max. test voltage for safety.
Rechargeable battery power with long battery life and rapid re-charge.
Filter and high current features.
Simple menu-driven operation.
|Earth / ground resistance range||0.010 Ω to 19.99 kΩ (auto-ranging), 1 mΩ resolution.|
|Accuracy (23 °C ± 2 °C)||±0.5% of reading ±2 digits.|
|Error||±5% of reading ±2 digits ±10 mΩ (meets VDE service error over 50 mΩ).|
|Compliance||BS 7430 (1991) VDE 0413 Part 7 (1982).|
|Test frequency||105 to 160 Hz reversing d.c. (50 Hz operation default to 128 Hz, 60 Hz operation default to 150 Hz) Set in steps of 0.5 Hz.|
|Test current range||50 mA max (selectable high and low levels).|
|Maximum output voltage||< 50 V r.m.s.|
|Interference||Typically 40 V peak-to-peak (50/60 Hz, sinusoidal nature).|
|Display||Alphanumeric L.C.D. (130 x 35 mm) giving test information and a large (20 mm) 3½-digit reading).|
|Temperature co-efficient||< ±0.1% per °C over the temperature range -10 to +40 °C, 0.05% per °F from 14 to 104 °F.|
|Operating temperature range and humidity||-10 to +40 °C (14 to 104 °F).|
|Storage temperature range and humidity||-20 to +60 °C (-4 to +140 °F).|
|IP rating||The instrument is waterproof to IP54.|
|Flash test||3 kV ac.|
|Power supply||Internal Rechargeable, sealed lead-acid battery.|
|Battery life||Approximately 5 hours continuous use.|
|Battery charge time||6 hours max. (from completely exhausted).|
|Safety||The instruments meet the requirements of IEC61010-1.|
|Dimensions||245 mm x 344 mm x 158 mm.|
|Megger DET2/2 warranty||2 years.|
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