KE2571 Digital Ground Resistance Tester

Product Name: Digital Ground Resistance Tester
Product Model: KE2571
Product Aliases: 1. Grounding Device Tester
                 2. Digital Display Ground Resistance Tester
                 3. Ground Stake Resistance Tester

I. Digital Ground Resistance Tester Product Introduction
       The KE2571 Digital Ground Resistance Tester is suitable for measuring the grounding resistance of various devices and low-resistance conductor values in industries such as power, telecommunications, railways, petroleum, chemicals, communications, and mining. This instrument can also measure soil resistivity and ground voltage.
II. Working Principle of the Digital Ground Resistance Tester
       The working principle of the KE2571 Digital Ground Resistance Tester involves converting DC to low-frequency constant AC current via an internal DC/AC converter. This current flows through a loop formed by the auxiliary grounding electrode C and the measured object E, generating an AC voltage drop on the measured object. The voltage drop is sent to an AC amplifier through the auxiliary grounding electrode P, amplified, and then detected and displayed on the meter. With the range switch, three different measurement ranges can be obtained: 0–2Ω, 0–20Ω, and 0–200Ω.
III. Performance Features of the Digital Ground Resistance Tester
       Compared to traditional hand-cranked ground resistance testers, the KE2571 offers the following features:
       a. Utilizes DC/AC conversion technology, integrating three-terminal and four-terminal measurement methods, and supports both AC and DC power sources.
       b. Employs phase-locked loop synchronous tracking detection and switched-capacitor filtering for strong anti-interference capability.
       c. Eliminates the traditional manual hand-cranking method, requiring no physical effort.
       d. No manual balancing required; intuitive panel touch-key operation and LCD digital display make measurement convenient and fast, eliminating visual errors associated with pointer instruments.
       e. Allows for high auxiliary grounding resistance, ensuring better measurement accuracy and high resolution.
       f. In addition to testing ground resistance, it can also measure low-voltage resistance, soil resistivity, and AC ground voltage.
IV. Technical Specifications