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Application of Sulfur Hexafluoride Sensor in Power Distribution Room
1. What is sulfur hexafluoride? Sulfur hexafluoride is a colorless, odorless, non-toxic, non-flammable stable gas. Sulfur hexafluoride gas has electrical insulation, and its electrical insulation capacity is about 2.5 times that of air and nitrogen. Sulfur hexafluoride gas has good arc extinguishing performance, its arc extinguishing ability is about 100 times that of air, and the chemical properties of sulfur hexafluoride are very stable, so sulfur hexafluoride is widely used as an insulating gas, such as hexafluoride Chemical sulfur relays, sulfur hexafluoride high-voltage circuit breakers, sulfur hexafluoride mutual conductivity sensors, sulfur hexafluoride lightning rods, etc. Sulfur hexafluoride has become a new generation of insulating oil with good insulation and high voltage resistance. Among the many uses of sulfur hexafluoride gas, most of the sulfur hexafluoride gas is mainly used in power equipment. Second, the application of sulfur hexafluoride in the power distribution room In the power industry, sulfur hexafluoride (SF6) gas is an important medium, which is used as a closed medium and high voltage switch Arc extinguishing and insulating gas. Sulfur hexafluoride gas can realize the economical and low-maintenance operation of the device. Compared with ordinary devices, it can save up to 90% of the space. Normal sulfur hexafluoride gas is not toxic to the human body. However, under the action of high-voltage arc, SF6 gas will be partially decomposed, and its decomposition products are often highly toxic, even a small amount can cause death. When an indoor switch using SF6 gas as the insulation and arc extinguishing medium leaks during use, the leaked SF6 gas and its decomposition products will accumulate in the low-level space of the room, causing local hypoxia and poisoning, which is harmful to the indoor switch. The safety of the staff constitutes a serious danger. Therefore, it is necessary to monitor sulfur hexafluoride in the power distribution room. 3. Application of sulfur hexafluoride sensor in power distribution roomFor a long time, the domestic power industry has a single detection method for sulfur hexafluoride gas widely used in electrical equipment, and the level of supervision is backward. In order to prevent gas leakage, a sulfur hexafluoride sensor (model: RS-SF6*-N01-2/OLED) was designed to monitor the specific gas concentration value of sulfur hexafluoride. This equipment adopts NDIR principle to detect, imported high-quality infrared light source, and is calibrated with standard gas. It has the characteristics of rapid and sensitive response, strong anti-interference ability, long life, high precision, high repeatability and high stability. Functional characteristics of sulfur hexafluoride sensor: (1) The sensor has a range of 0-1000ppm. (2) The measurement accuracy is high, which can reach within ±3% FS, and the repeatability can reach within 2%. (3) The 485 communication interface standard ModBus-RTU communication protocol is adopted, the address and baud rate can be set, and the communication distance is up to 2000 meters. (4) A high-quality OLED display can be selected, and the value can be viewed directly on site and can be displayed clearly at night. (5) On-site power supply adopts 10~30V DC wide-voltage power supply, which can adapt to a variety of on-site DC power supplies. (6) The product adopts a wall-mounted waterproof shell, which is easy to install and has a high degree of protection, which can be used in harsh on-site environments. Sulfur hexafluoride sensors are installed in the power distribution room, which can monitor whether the sulfur hexafluoride gas exceeds the standard for 24 hours. It can be connected to the environmental monitoring host to upload the data to our free cloud platform. The environmental monitoring host can monitor multiple Point centralized control. When the sulfur hexafluoride gas content exceeds the limit, the administrator will promptly send SMS, telephone, and e-mail alarm information. Support multiple data viewing methods on computer web terminal, mobile APP and WeChat official account.
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