Everyone in the actual work, if you want to detect transformer connection group, the secondary circuit testing and parameters such as differential bus protection system, you need to use digital phase volt ampere double clamp table, the device in the power industry has a very wide range of application, also is popular among the general power of workers, so digital double clamp phase volt-ampere table and the general type of volt-ampere table what's the difference? This article will give you a brief introduction.
Double clamp phase voltammetry meter is a multifunctional development of artificial intelligence control instrument designed for field research and testing. It consists of host, current clamp (2), test line (4) and so on. Through this paper, the host adopts 3.5-inch true color LCD screen and graphical menu information management user interface to achieve data results display. The measured parameters are displayed on the same screen at a glance. Current clamp integrated handle structure optimization design, easy to improve the practical operation of students, is widely used in places with dense row. Can according to their own instrument technology under the condition of the circuit under test does not open, and we need to measure the two way communication study work between the phase between voltage, current, voltage and current phase, phase, frequency, voltage output current, active power, reactive power, apparent power, power factor, voltage produce different current phase diagram instructions, Discriminant ability analysis of transformer wiring groups, inductive and capacitive circuits, testing methods and secondary circuits and parent differential protection ecological service system, reading differential protection phase related legal relations between CT groups, check whether the wiring of electricity meters should be correct, scientific and reasonable, overhaul the line network teaching equipment, etc. For electricity quality supervision and inspection company accounting professionals in order to be able to timely provide theory as one of the features of social culture safe, accurate and convenient intelligent vehicle instrumentation. It is suitable for chemical engineering, metallurgy, railway, meteorology, industrial and mining enterprises, scientific research and innovation education colleges, and economic departments of measurement market, etc. In particular, it is suitable for electric energy billing and processing software system and relay protection natural environment monitoring system.
The load, phase sequence and polarity of the inductance and capacitance can be judged according to different phase relations during the test. When the u1I1 phase is displayed at 0° * 90°, the measured load is inductive load; If the load is within 270° * 360°, the measured load is capacitor load; If all display phases are close to 120°, when the phases are close to 120 and 300°, the phases are positive with opposite polarity (there may be current reverse clamp or line reverse connection), and the other case is reverse phase sequence (phase defects are not considered).
Two different working current clamps for each instrument are dedicated to this instrument, and can not meet the requirements of changing to another instrument technology can be used. The current clamp is strictly against falling and collision. Part of the clamp must also be able to effectively maintain such a Chinese clean, completely unable to form a closure for analysis and testing. After the current clamp is used, students should remove all the dust on the clamp surface in time. They should not use our own rough materials or corroded materials to clean the clamp surface. They should use soft cloth and lubricant (such as WD-40 lubricant) to wipe it gently. Testing must also be continuously developed before providing good cleaning before continuing to study use.
Digital double clamp phase voltammeter is more accurate than ordinary type voltammeter and more convenient to use, so it is very popular with the majority of electric power workers.
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