The grounding resistance tester is a grounding resistance tester for distribution lines, interior wiring, and electrical machinery. At the same time equipped with ground voltage range suitable for ground voltage measurement. Designed to meet the safety specifications of IEC61557. With dustproof and waterproof function, it is designed and manufactured according to IEC60529 standard and is suitable for measurement in bad weather. Easy measurement with a simple test probe. The easy test probe uses an exchangeable alligator clip and test rod design. When the grounding resistance is measured, the grounding resistance tester has a function lamp that simply detects whether the auxiliary grounding resistance is within an allowable range or whether there is a disconnection on the test line, and so on, so as to determine whether the instrument is in a normal state. Lightweight soft shell design makes it easy to carry accessories at the same time.
Grounding resistance tester The instrument is small, light, beautiful appearance, easy to operate. The test current and resistance values ​​are displayed in real time using LED digital panels, which are clear, accurate, and intuitive. The test current can be arbitrarily adjusted according to the user's different needs 5-30A, and the test time is set continuously between 1-99s. When the resistance of the measured object exceeds the user's set value (0-510 mΩ can be arbitrarily set alarm point), the instrument has a sound and light alarm function, and there is over-current (more than the maximum test current) protection function and sound Warning. Its advanced open-circuit alarm function allows users to effectively avoid false detections and missed detections. The instrument can meet a wide range of user testing needs.
Grounding resistance tester is a common instrument for measuring grounding resistance. It is also an indispensable tool for acceptance inspection of electrical safety inspection and grounding projects. In recent years, due to the rapid development of computer technology, ground resistance tester has also penetrated a large number of microprocessor technology. . The resistance of the ground loop is measured with a large current (25A or 10A), and it is also an indicator that the ground loop is subjected to a large current to avoid personal injury when the insulation performance is degraded (or damaged). The above requirements are for the high-performance test equipment provided by the production workshop and experimental department. The grounding resistance tester is used to measure the resistance value between the housings of various motors, electrical appliances, instrumentation, household appliances, etc. and its power ground. When the measured value exceeds the set value, it has an audible and visual alarm function and there is over current (AC >30A) Protection function.
The main differences between ground resistance testers are:
Digital Ground Resistance Tester:
1, advantages: the most commonly used power, simple and convenient
2. Scope of application: Suitable for electric power, post and telecommunications, railway, petroleum, chemical, communications, mining and other departments. It is mainly used to measure the grounding resistance of various devices and measure the resistance of low-resistance conductors and measurable soil resistivity and ground voltage.
3, model: GH-6500
Clamp ground resistance tester:
1. Advantages: This type of grounding resistance tester is small in size, light in weight, does not require wiring, and does not need to be used to make an auxiliary level. It is safe and fast, and can measure the leakage current on the grounding line.
2. Inadequate: Suitable for measuring the grounding system with loops. The measurement results reflect the integrated value of the grounding resistance and grounding down conductor.
3, scope of application: grounding resistance measurement of telecommunications, meteorological, oil field, construction and industrial electrical equipment, and must be a grounded system with loops
4, model selection: GH-6500B: resistance limit: 0.01 ~ 200Ω;
GH-6500B+: Limit of Resistance: Resistance Range 0.01 to 1200 Ω
GH-6500E: Limit of resistance: 0.01~1200Ω, current limit: 0.00mA-40.0A.
Earth network ground resistance tester:
1. Advantages: Large output power, variable frequency anti-interference, high measurement accuracy, and can also choose frequency table to match earth ground resistance meter for anti-interference measurement of surface potential gradient, step voltage, and contact potential difference.
2. Inadequate: Need to piling and wiring.
3, the scope of application: power system, substation ground network measurement, accurate measurement of grounding impedance, step potential difference, contact potential difference, soil resistivity, field surface potential distribution, ground network current distribution and other grounding characteristics parameters.
4, Model selection: GH-6502 and A type (old), GH-6502B (new), GH-6502F (full-featured band selection table)
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