Kyoritsu KEW 4105A EARTH TESTER Review

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Real Questions This Article Answers

• What is the KEW 4105A used for?
• How does it measure earth resistance?
• What accessories come in the box?
• What are the official specifications?
• Is it suitable for field work?
• Which standards does it meet?

3-Pole and 2-Pole Earth Resistance Measurement

The KEW 4105A supports both 3-pole and 2-pole earth resistance testing, giving technicians flexibility depending on site conditions and measurement requirements.

Reduced Influence from External Conditions

Its circuit design reduces the impact of earth voltage and the resistance of auxiliary earth spikes, helping improve measurement stability in challenging environments.

Dust and Drip Proof Construction

Designed to comply with IEC 60529 IP54, the tester is suitable for field use where dust and light water exposure may be present.

Large LCD Display

The large digital LCD is easy to read, which is especially useful during outdoor work or low-light measurement tasks.

Lightweight and Shock Resistant

The unit uses a new shock-resistant case material while remaining compact and lightweight for easier carrying and operation.

Low Test Current

The 2 mA measuring current permits earth resistance testing without tripping earth leakage current breakers in the circuit under test.

Earth Voltage Measurement

In addition to earth resistance, the KEW 4105A can also measure earth voltage, making it more useful for diagnostic and verification work.

Ideal for Professionals Who Need Reliable Ground Testing

• Electrical installation inspection
• Grounding system maintenance
• Safety verification
• Industrial electrical testing
• Construction site electrical checks
• Facility management and preventive maintenance
• Commissioning work for earthing systems

Why It Performs Well on Site

• Portable and lightweight design
• Dust and drip resistant body
• Large and easy-to-read display
• Flexible measurement modes
• Low current helps prevent nuisance breaker tripping

Stable Measurement in Real Conditions

One of the biggest strengths of the KEW 4105A is its ability to reduce the influence of environmental noise and auxiliary spike resistance. In practical terms, that means more dependable readings in less-than-ideal test locations.

Field-Friendly Design

A tester can be technically excellent but still frustrating to use if it is bulky or hard to read. The KEW 4105A solves that problem with a compact body, low weight, durable case material, and clear LCD display.

Safer Testing Workflow

Because the instrument uses a 2 mA measuring current, it is better suited for testing without unnecessarily affecting the circuit under test.

Standards-Based Confidence

Compliance with IEC safety and performance standards helps reinforce trust in the KEW 4105A for professional installation, maintenance, and inspection work.