The Megger DET2/3 is a ground resistance tester that is designed for measuring earth resistance in a variety of applications. Compared to the Megger DET3TD and DET3TC, the DET2/3 is a more advanced model with additional features and capabilities.
One of the key differences between the DET2/3 and the DET3TD/DET3TC is that the DET2/3 can measure earth resistance using both the two-terminal and three-terminal methods, while the DET3TD/DET3TC only uses the three-terminal method. This makes the DET2/3 more versatile and able to handle a wider range of testing scenarios.
The DET2/3 also has a wider measurement range than the DET3TD/DET3TC, with a range of 0.001 Ω to 20 kΩ, compared to 0.01 Ω to 2000 Ω for the DET3TD and 0.01 Ω to 200 Ω for the DET3TC. This makes the DET2/3 suitable for testing larger grounding systems with higher resistance values.
Features
- High resolution of 1 mΩ, ideal for large ground systems
- Versatile test modes
- High accuracy for ground electrode grid and soil resistivity tests
- Rechargeable battery power that can last all day with a fast re-charge (up to 10 hours)
- Robust instrument with IP65 protection
- Automatic test frequency selection, with filters and high current features
- Diagnostic trace display
- Data storage - 900,000 points
- Large color display that shows numeric and graphical results
Specifications
| Earth Resistance Range |
0.001 Ω to 20.00 kΩ (auto-ranging), 1 mΩ resolution. |
| Accuracy (23°C ±2°C) |
±0.5% of reading ±2 digits |
| Service Error |
±5% of reading ±2 digits ±10 mΩ (meets VDE service error over 50 mΩ) |
| Comply with Standards |
BS 7430 (Grounding) |
| BS 62305 (Lightning) |
| BS50122 (Railway) |
| IEEE Standard 81 |
| Test Frequency |
10 to 200 Hz, Steps of 0.5 Hz |
| Test Current |
50 mA max (selectable high and low levels) |
| Maximum Output Voltage |
< 50 V r.m.s. |
| Maximum Interference |
Typically 50 V peak-to-peak (50/60 Hz, sinusoidal nature) |
| Stakeless Resistance Measurement |
0.01 Ω to 200 Ω, ±7 % accuracy, ±3 digits at 128Hz |
| Continuity |
0.01 Ω to 1 kΩ (3 digits) |
| 12V, 205mA, <10 Ω |
| Leakage Current |
0.00 A to 2.00 A, ±5% (±3 digits) |