KYORITSU EARTH TESTER MODEL 4102A-H

Description

The Ultimate Tool for Grounding Integrity

The hard case model earth resistance tester stands out as an essential instrument for anyone serious about electrical safety and system integrity. This device, meticulously designed for both professionals and enthusiasts, offers a robust and reliable solution for measuring earth resistance and voltage. Its core functionality centers on its ability to perform both 3-pole and 2-pole earth resistance measurements, a critical feature for ensuring grounding systems are functioning within safe parameters. The advanced circuit design minimizes external influences, such as earth voltage and the resistance of auxiliary earth spikes, guaranteeing accurate and dependable readings. The instrument’s straightforward scale allows for direct reading of earth resistance values, eliminating the need for complex calculations and making it easy to use for all skill levels.

Built to Withstand the Toughest Environments

Durability is a cornerstone of this product’s design. The new, shock-resistant case material ensures the device can withstand the rigors of field use, protecting the sensitive internal components from accidental drops and impacts. Furthermore, the tester is designed to be dust and drip-proof with an IEC 60529 IP54 rating. This means it can be used confidently in a wide range of challenging environments, from dusty construction sites to damp outdoor locations, without compromising its performance. The compact and lightweight design makes it highly portable, allowing technicians to carry it effortlessly to any job site. This combination of robust construction and portability makes the hard case model an ideal choice for professionals who require a reliable tool that can go wherever they go.

Measuring with Precision and Safety

The instrument is engineered to meet the highest safety standards, including IEC 61010-1 CAT III 300V, providing users with peace of mind during operation. A key feature is the low measuring current of just 2mA. This is a crucial safety and convenience feature because it allows for earth resistance tests to be performed without tripping Earth Leakage Current Breakers (ELCBs) in the circuit under test. This capability saves time and prevents unnecessary interruptions, streamlining the testing process. The device also includes an overload protection feature for both earth resistance and earth voltage measurements, safeguarding the instrument from damage caused by unexpected voltage spikes. Additionally, the integrated “OK” lamp provides a simple and clear visual confirmation of proper lead wire connections to the C, P, and E terminals, further enhancing safety and ensuring accurate results.

Versatile Applications for Modern Needs

The hard case model is not just a single-purpose tool; its versatility makes it invaluable across a multitude of applications. Primarily, it is used for testing the grounding systems of electrical installations in residential, commercial, and industrial buildings. A properly grounded system is vital for protecting people from electric shock and preventing damage to sensitive equipment. Beyond buildings, the tester is essential for verifying the grounding of lightning protection systems, which are critical for safeguarding structures from lightning strikes. In the telecommunications sector, it plays a key role in ensuring the grounding of towers and equipment shelters, which is crucial for signal integrity and equipment longevity. Finally, it is an indispensable tool for solar panel installations, where proper grounding is necessary for both safety and the efficient functioning of the solar array. The ability to measure both earth resistance and earth voltage makes it a comprehensive tool for a wide variety of electrical testing scenarios.

The Science of Earth Resistance

Understanding earth resistance is fundamental to electrical safety. Earth resistance, or ground resistance, is the opposition of the earth to the flow of electric current. A low resistance path to the earth is necessary to dissipate stray currents, fault currents, and lightning strikes, preventing hazardous voltages from building up on equipment or structures. The 3-pole measurement method, which this device is capable of performing, is the industry standard for accurately measuring earth resistance. It involves injecting a current into the earth and measuring the resulting voltage drop to calculate the resistance. The device’s advanced circuit design ensures that these measurements are performed with minimal interference, providing a true and accurate reading of the grounding system’s effectiveness. This scientific approach to measurement guarantees that professionals can make informed decisions about the safety and integrity of the electrical systems they are testing.

Technical Superiority and Practical Design

The product’s technical specifications demonstrate its high-level engineering and practical design. Its measurement ranges for earth resistance are strategically set at 0 to 12 Ω, 0 to 120 Ω, and 0 to 1200 Ω, each with a full-scale accuracy of ±3%. This provides the flexibility to test a wide variety of grounding systems, from low-resistance industrial grounds to higher-resistance residential grounds. For earth voltage, it measures 0 to 30V AC (50/60Hz) with the same accuracy. The device is powered by six standard R6 (AA) batteries, making it easy to maintain and operate. With dimensions of 105(L) × 158(W) × 70(D)mm and a weight of approximately 600g (including batteries and the case lid), it’s perfectly sized for both portability and a comfortable grip during use. The comprehensive set of included accessories, such as the test leads, auxiliary earth spikes, and carrying case, means the user has everything they need to start testing immediately.