Description
Earth Resistance & Resistivity Tester
- High test current up to 80mA yielding resolution of 0.001Ω on 2Ω range
- Advanced Filtering method (based on FFT Fast Fourier Transform) reduces noise interference for obtaining stable measurements.
- Automatic and Manual selection of the Test Current Frequency in four bands (94/105/111/128Hz). In Automatic mode, KEW4106 will select the most suitable Frequency.
- Warning for excessive noise and high Auxiliary Earth Spikes resistance.
- Large Graphic Display with backlight for readings in poorly illuminated areas.
- Robust design with IP54 protection.
| Function | Range | Resolution | Measuring range | Accuracy |
| Earth resistance Re (Rg at ρ measurement) |
2Ω | 0.001Ω | 0.03 – 2.099Ω | ±2%rdg±0.03Ω |
| 20Ω | 0.01Ω | 0.03 – 20.99Ω | ±2%rdg±5dgt (*1) | |
| 200Ω | 0.1Ω | 0.3 – 209.9Ω | ||
| 2000Ω | 1Ω | 3 – 2099Ω | ||
| 20kΩ | 10Ω | 0.03 – 20.99kΩ | ||
| 200kΩ | 100Ω | 0.3 – 209.9kΩ | ||
| Auxiliary earth resistance Rh, Rs |
8% of Re+Rh+Rs | |||
| Earth resistivity ρ |
2Ω | 0.1Ω·mm – 1Ω·m Auto-ranging |
0.2 – 395.6Ω·m | ρ=2×π×a×Rg (*2) |
| 20Ω | 0.2 – 3956Ω·m | |||
| 200Ω | 20Ω – 39.56kΩ·m | |||
| 2000Ω | 0.2 – 395.6kΩ·m | |||
| 20kΩ | 2.0 – 1999kΩ·m | |||
| 200kΩ | ||||
| Series interference voltage Ust (A.C only) (*3) |
50V | 0.1V | 0 – 50.9Vrms | ±2%rdg±2dgt (50/60Hz) |
| ±3%rdg±2dgt (40 – 500Hz) | ||||
| Frequency Fst |
Auto-ranging | 0.1Hz 1Hz |
40Hz – 499.9Hz | ±1%rdg±2dgt |
| Measuring method | Earth resistance: Fall-of-potential method (currents and voltages measured via the Probes) Measurement method of Earth Resistivity (ρ): Wenner 4-pole method Series interference voltage (earth voltage) RMS Rectifier (between the E-S Terminals) |
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| Memory capacity | 800 data | |||
| Communication Interface | Model 8212-USB Optical Adapter | |||
| LCD | Dot-matrix 192×64 monochrome | |||
| Over-range Indication | “OL” | |||
| Overload Protection | between E-S(P) and between E-H(C) terminals AC280V / 10 sec. | |||
| Applicable standards | IEC 61010-1 CAT III 300V / CAT IV 150V Pollution degree 2 IEC 61010-031, IEC 61557-1, 5, IEC 61326-1 (EMC), IEC 60529 (IP54) |
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| Power source | DC12V : sizeAA manganese dry battery (R6) × 8 (Auto power off: Approx. 5 minutes) |
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| Dimension | 167(L) × 185(W) × 89(D) mm | |||
| Weight | Approx. 900g (including batteries) | |||
| Accessories | 7229A (Earth precision measurement), 7238A (Simplified measurement test leads), 8032 (Auxiliary earth spikes [2 spiks/set])×2 sets (4 spikes in total), 8200-04 (Cord reel [4 pcs])×1 set, 8212-USB (USB adapter with “KEW Report(Software)”), 8923(Fuse [0.5A/600V]) × 1 (included), 1 (spare), 9121 (Shoulder strap), 9125 (Carrying case), R6 × 8, Instruction manual, Calibration certificate |
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(*1) Auxiliary earth resistance is 100Ω with Rk correction
(*2) Depending on the measured Rg. Interval [a] between auxiliary earth spikes is 1.0 – 30.0m
ADVANCE SCIENCE & TECHNOLOGY ZONE
1st floor shop #13 kader tropical
10 shaid nazrul islam road, hatkhola, tikatoly Dhaka-1203
E-mail: astzbd@gmail.com, Website: WWW.ASTZBD.COM
Cell: +88 01329100999
+88 01329100998
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