The grounding resistance testerunder UHV power can help many power workers conduct various power tests more conveniently.
The grounding resistance testeris a commonly used instrument for measuring grounding resistance, and is also an indispensable tool for electrical safety inspection and completion acceptance of grounding engineering. With the rapid development of computer technology, grounding resistance testers have penetrated into many microprocessor technologies, and their measurement functions, content, and accuracy are unparalleled. The grounding resistance tester adopts a new clamp method, which can directly measure online without the need for pile driving and wiring. Controlled by a microprocessor, it automatically detects the connection status of each interface and the interference voltage and frequency of the grounding grid, with unique numerical retention and intelligent prompt functions.
Selection of grounding resistance tester:
1. At present, intelligent grounding resistance meters have powerful functions, such as digital grounding resistance testers for ultra-high voltage production, which can cope with various complex situations on site, effectively eliminate interference, automatically track suitable test strips and grounding parts, and immediately provide intelligent prompts for various problems when faults occur.
2. The single claw grounding resistance meter is mainly used to check the multi pole grounding network connected above the ground, and to query the grounding status of each grounding electrode through the loop grounding resistance. However, it cannot replace the measurement of the power frequency grounding resistance of the grounding electrode. The entire network. The clamp type grounding resistance tester is also a popular grounding resistance tester currently available. The instrument is small in size and easy to operate. Therefore, it is an ideal grounding resistance meter for checking grounding devices during rainy season, mid year, and year-end.
3. If the measurement accuracy is higher, convenient and simple, the double claw grounding resistance tester can be used to measure the grounding resistance of grounding devices such as power towers, microwave towers, lightning rods, and auxiliary devices (faucets, water pipe devices) with good grounding conditions. The dual claw grounding resistance tester perfectly combines the characteristics of traditional volt ampere measurement with the new technical principle of clamp method, and adopts new computer control technology, becoming a leading intelligent grounding resistance measurement instrument in China. It has the characteristics of high precision, complete functions, and easy operation. It can be widely used for measuring grounding resistance in power and telecommunications systems, buildings, airports, railways, oil tanks, lightning protection devices, high-voltage iron towers, etc. Currently, it is in the domestic postal and telecommunications industry
4. For large-scale system grounding, network grounding, and soil resistivity testing, it is best to use a 3A large-scale grounding grid grounding resistance tester. Due to the unique function of the instrument, three wire and four wire measurement methods are used to ensure the repeatability and stability of the grounding resistance measurement values. Moreover, the measurement accuracy of the 3A large-scale grounding grid grounding resistance tester is as high as 3%, and the test current is less than 3A. At the same time, it also has strong anti-interference ability, so measurements can be taken without losing power.
