ETCR7550 Battery Internal Resistance Tester

The ETCR7550 battery internal resistance tester is designed to measure the internal resistance, voltage, and temperature of lead‑acid, nickel‑cadmium, nickel‑metal hydride, lithium‑ion, and other types of batteries, enabling assessment of their health status. It employs the Kelvin four‑wire AC measurement method, ensuring that measurements are unaffected by lead‑wire or contact resistances, thus delivering accurate internal resistance readings. The device simultaneously displays resistance, voltage, and temperature, providing clear and intuitive test results. Using a 1 kHz AC test frequency, it allows continuous power supply to connected devices without interruption. It also features comparator functionality, filtering capabilities, and Bluetooth communication. Equipped with both needle‑type and clamp‑type test leads, it accommodates a wide range of application scenarios.

ETCR1400 Overhead Line Ground Fault Locator

The ETCR1400 Overhead Line Ground Fault Locator is a newly developed line‑ground fault detection device meticulously engineered by our company. It is designed for inspecting single‑phase ground faults on overhead high‑voltage lines no longer than 25 kilometers, enabling precise identification and localization of the fault point. During inspection, the line must be de‑energized. The instrument can accurately detect concealed ground faults, including metallic ground faults, arc‑ground faults, ground faults via transition resistances, porcelain insulator breakdowns, and surge arrester breakdowns.

ETCR2300B Ground-Pole Clamp-On Ground Resistance Meter

The ETCR2300 series ground‑rod clamp‑on earth resistance meter is a high‑end instrument meticulously designed and manufactured for on‑site measurement of earth resistance, soil resistivity, grounding current, and grounding voltage. Featuring advanced digital processing technology, it offers a variety of measurement modes, including the clamp‑meter method, two‑wire method, three‑wire method, four‑wire method, and selective mode. With its large‑diameter current clamp design, the meter meets the testing requirements of diverse applications; it can measure the earth resistance of large‑size grounding down conductors and flexibly assess the earth resistance of single‑point and mesh‑type grounding systems, as well as other complex grounding configurations.