Earth Resistance and Resistivity Tester

Catalogue
description

KEW 4106 - Earth Resistance & Resistivity Tester

  • High test current up to 80mA yielding resolution of 0.001? on 2? 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, KEW 4106 will select the most suitable Frequency.
  • Several sub-results can be shown on the display: Resistance of the Auxiliary Earth Spikes, Frequency of Test Current, Voltage and Frequency of Interference (noise), Residual Resistance Rk, etc.
  • Warning for excessive noise and high Auxiliary Earth Spikes resistance.
  • Large Graphic Display with backlight for readings in poorly illuminated areas.
  • Up to 800 measurement results can be saved in the memory and recalled on the display.
  • The stored results can be transferred to a PC using the "KEW Report" software and a USB adaptor (Model 8212-USB) which are included.
  • Robust design with IP54 protection.

Memory capacity

 800 data

Communication Interface

 Model 8212-USB Optical Adaptor

LCD

 Dot-matrix 192×64 monochrome

Overload Protection

 between E-S(P) and between E-H(C) terminals AC280V / 10 sec.

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

 Autoranging ,0.1Hz 1Hz, 40Hz - 500Hz, ±1%rdg±2dgt

Measuring method

 Earth resistance: Fall-of-potential method (currents and voltages measured via the Probes) Measurement method of Earth Resistivity (?): Wenner 4-pole method Series interference voltage (earth voltage) RMS Rectifier (between the E-S Terminals)

Over-range Indication

 "OL"

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)

Power source

 DC12V : sizeAA manganese dry battery (R6) × 8 (Auto power off: approx. 5 minutes)

Dimensions

 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 adaptor with "KEW Report(Software)"), 9121 (Shoulder strap), 9125 (Carrying case), R6 × 8, Instruction manual, Calibration certificate

Optional

 8212-RS232C (RS232C adaptor with "KEW Report(Software)")

Function

 Range, Resolution, Measuring range, Accuracy

Earth resistance Re (Rg at ? measurement)

 2?, 0.001?, 0.03 - 2.099?, ±2%rdg±0.03?

20? , 0.01?, 0.03 - 20.99?, ±2%rdg±5dgt (*1)

200?, 0.1?, 0.3 - 209.9?

2000?, 1?, 3 - 2099?

20k?, 10?, 0.03k - 20.99k?

200k?, 100?, 0.3k - 209.9k?

Auxiliary earth resistance Rh, Rs

 8% of Re+Rh+Rs

Earth resistivity ?

 2?, 0.1?·mm - 1?·m, Autoranging, 0.2 - 395.6?·m, ?=2×?×a×Rg (*2)

20?, 0.2 - 3956?·m

200?, 20 - 39.56k?·m

2000?, 0.2 - 395.6k?·m

20k?, 2.0 - 1999k?·m

200k?

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

 Autoranging, 0.1Hz 1Hz, 40Hz - 500Hz, ±1%rdg±2dgt

Measuring method

 Earth resistance: Fall-of-potential method (currents and voltages measured via the Probes) Measurement method of Earth Resistivity (?): Wenner 4-pole method Series interference voltage (earth voltage) RMS Rectifier (between the E-S Terminals)
No datas found
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