Ground resistance :20.0 to 49.9 ohm (±10 % rdg.), 50.0 to 500.0 ohm (±5 % rdg.)
Principle of operation :Voltage comparison method (Measurement of voltage at loop impedance serial resonance)
Open circuit voltage: 0.9 V ACpeak typ. Testing current: 3.6 mA AC max. with terminals shorted, Testing frequency: 100 kHz to 1.5 MHz
Features : Energy saving mode, Resonance indicator, Battery check
Power consumption LR6(AA) alkaline batteries × 4, Continuous use: 8 hours
Dimensions and mass :155 (6.10in) W × 98 (3.86in) H × 49 (1.93in) D mm, 380g (13.4oz)
Supplied accessories : MEASUREMENT CABLE 9265 (black 1 m (3.28 ft), red 20 m (65.62 ft), one each; CABLE WINDER × 1), LR6(AA) alkaline batteries × 4, CARRYING CASE 9338 × 1
Details
Tags: máy đo điện trở đất, đồng hồ đo điện trở đất
Ground resistance meter
Say goodbye auxiliary grounding rods with the 3143 |
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- Measure ground resistance on paved roads
- Auxiliary grounding rods not necessary
- Large digital display for easy viewing
- Soil-resistant design and superior durability
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| The 3143 was developed based on the technologies of the NTT East Japan Technology Strengthening Center. |
Notes on Usage:
The 3143 is particularly useful for measuring the earth resistance of single rod electrodes found among aerial transmission line equipment and various types of safety box circuits, and incorporates a measurement principle that is different from that of the Earth HiTESTER 3151. |
| Basic specifications (Accuracy guaranteed for 1 year) |
|
| Ground resistance |
20.0 to 49.9 ohm (±10 % rdg.), 50.0 to 500.0 ohm (±5 % rdg.) |
| Principle of operation |
Voltage comparison method (Measurement of voltage at loop impedance serial resonance)
Open circuit voltage: 0.9 V ACpeak typ. Testing current: 3.6 mA AC max. with terminals shorted, Testing frequency: 100 kHz to 1.5 MHz |
| Features |
Energy saving mode, Resonance indicator, Battery check |
| Power consumption |
LR6(AA) alkaline batteries × 4, Continuous use: 8 hours |
| Dimensions and mass |
155 (6.10in) W × 98 (3.86in) H × 49 (1.93in) D mm, 380g (13.4oz) |
| Supplied accessories |
MEASUREMENT CABLE 9265 (black 1 m (3.28 ft), red 20 m (65.62 ft), one each; CABLE WINDER × 1), LR6(AA) alkaline batteries × 4, CARRYING CASE 9338 × 1 |
DOWNLOAD CATALOG
MANUAL 3143
