Kyoritsu KEW 4106 Earth Resistance and Soil Resistivity Tester

Product Overview

The Kyoritsu KEW 4106 is a high-precision Earth Resistance and Soil Resistivity Tester designed for professional grounding system analysis, substation commissioning, utility maintenance, and geotechnical investigations.

It supports 4-wire, 3-wire, and 2-wire earth resistance measurements, as well as earth resistivity (ρ) measurement using the Wenner 4-pole method, making it ideal for large grounding systems and soil surveys.

With a powerful 80 mA test current, advanced FFT-based noise filtering, and memory storage for up to 800 results, the KEW 4106 delivers stable and highly accurate measurements even in electrically noisy environments.

Key Features

• Earth resistance measurement with 4, 3, and 2 wires
• Earth resistivity (ρ) measurement using Wenner method
• High test current up to 80 mA
• High resolution 0.001 Ω (2 Ω range)
• Six resistance ranges from 0.03 Ω to 200 kΩ
• Advanced FFT filtering reduces electrical noise
• Automatic & manual test frequency selection (94 / 105 / 111 / 128 Hz)
• Series interference voltage measurement (earth voltage)
• Auxiliary earth spike resistance check (Rh & Rs display)
• Residual lead resistance correction (Rk Null function)
• Large dot-matrix backlit graphic LCD
• Stores up to 800 measurement results
• USB interface with KEW Report software included
• IP54 rugged construction

Technical Specifications

Manufacturer Information

• Manufacturer: Kyoritsu
• Model: KEW 4106

Earth Resistance Measurement (Re)

Earth Resistivity (ρ)

• Automatic calculation using formula: ρ = 2πaRg
• Electrode spacing (a): 1.0 to 30.0 m
• Wide autoranging resistivity measurement capability

Interference Measurement

• Series interference voltage: 0–50 V RMS
• Frequency measurement: 40–500 Hz
• Automatic noise detection & warning

General Specifications

• Measuring method: Fall-of-potential method
• Memory capacity: 800 data records
• Communication: USB (Model 8212-USB adaptor included)
• Display: 192 × 64 dot-matrix LCD with backlight
• Overload protection: AC 280 V for 10 seconds
• Safety standards: IEC 61010-1 CAT III 300V / CAT IV 150V
• Protection rating: IP54
• Power supply: 8 × AA batteries (Auto power-off)
• Dimensions: 167 × 185 × 89 mm
• Weight: Approx. 900 g (including batteries)

Included Accessories

• Precision measurement test leads (Red 40 m; Yellow/Black/Green 20 m)
• Simplified measurement test leads
• 4 auxiliary earth spikes (2 sets)
• 4 cable reels
• USB adaptor (8212-USB)
• KEW Report software
• Carrying case
• Shoulder strap
• Calibration certificate
• 8 × AA batteries

Applications

• Substation grounding system testing
• Power utility earthing verification
• Large industrial grounding systems
• Lightning protection system design
• Soil resistivity surveys for grounding design
• Geotechnical and construction site investigations

Why Buy from FieldInstruments.lk? (Kyoritsu KEW 4106)

• 100% Genuine Kyoritsu Instruments – Original products with manufacturer warranty
• Competitive pricing with fast island-wide delivery
• Trusted supplier for professional grounding and utility test equipment
• Local warranty support and technical assistance
• Reliable after-sales service and calibration guidance
• Expert consultation for earthing design and soil resistivity surveys