Megger DET4TD2 Description
Dry-cell battery powered and highly reliable, this ground tester automatically checks the connection and conditions of the P spike, C spike, and the level of ground noise, indicating the status on the display. The tester also offers a voltmeter to enable the measurement of ground voltage.
Features
- 2, 3 and 4 point testing
- Multiple, user selectable test frequencies
- Warning indicators prevent test failure
- Simple one button operation
- Multiple, user selectable test frequencies allows the operator to find the most effective frequency for making the measurement
- 200,000 ?¦ measurement range provides the ability to measure the resistivity of any type of soil
- User selectable test voltage ensures that the units can be used in agricultural environments
- Microprocessor control for improved error detection
- Clear, unambiguous warnings and error indications ensure the reliability of the reading and reduce test time
- Accuracy of 2% of reading enhances reliability of measurements
- CAT IV 100V provides increased operator safety
Megger DET4TD2 Specifications
| Resistance Range | 0.01 to 20 k?¦ |
| Resistance Accuracy | 2P measurements: 2% ±3 digits 3P measurements: 2% ±3 digits 4P measurements: 2% ±3 digits |
| Maximum Probe Resistance | Rp limit: 100 kΩ (50 V output voltage) Rc limit: 100kΩ (50V output voltage) Limits reduced to 50 kΩ for 25 V output voltage Limits reduced to 5kΩ for 0.01 Ω resolution |
| Earth Voltage | Range: 0 to 100 V Accuracy: 2% ±2 V |
| Wire Tests | 2: Yes 3: Yes 4: Yes |
| Ground Current Range (with Current Measuring Clamp) | 0.5 mA to 19.9 A |
| Ground Current Accuracy | 5% ±3 digits |
| Test Frequency | Frequency: 128 Hz Voltage: 25 V or 50 V, user selectable (factory setting 50 V) Current: 450 µA at 25 V or 50 V (selectable), 4.5 mA at 25 V |
| Noise | Rejection: 40 V peak to peak Check: Automatic |
| Spike Check | C: Automatic P: Automatic |
| General Specifications | |
| Battery | 8 x 1.5 V AA cell |
| Battery Life | 3 hours, 700 consecutive tests |
| Display | 3 ½ digit high contrast LCD |
| Safety | EN61010-1 CAT IV 100 V |
| Terminals | 4 mm plug type (test leads) |
| Temperature | Operating: 5 to 131°F (-15 to 55°C) Storage: -40 to 158°F (-40 to +70°C) Humidity: 95% RH non-condensing at 104°F (40°C) |
| Ingress Protection | IP54 |
| EMC | Meets the requirements of EN61326-1:1998 for use in heavy industrial areas, including amendment 1 |
| Dimensions | 8 x 5.7 x 3.2″ (203 x 148 x 78 mm) |
| Weight | 2.2 lbs (1 kg) |
Applications
- Primary and secondary electrical grounding systems
- Utility pole grounds§Lightning protection systems
- Residential grounds§Machinery safety grounds
- Computer and communication system grounds
- EMI/RFI system grounds
- Antenna and pedestal grounds
- CATV system grounds
