Today, making a circuit protection scheme for a product or system, especially for industrial applications such as smart grids, is like designing a defensive battle for a football game: you need a big brand (yuan) star. There is also a need to tactically pinch them together to defend against every possible "offense" from the opponent. There are quite a few doorways in this, but there are also routines to find. Today we will take a look at how Excelpoint is the "luxury" of the industrial circuit protection industry. First, let's take a look at the circuit protection components "stars" that are reusable on the smart grid, most of them from Bourns. Every material is very "material". such as: TBU high-speed protector: As a circuit protection device based on MOSFET semiconductor technology, its overcurrent protection has a very fast response speed. Generally, it only needs 200nS to ensure that the inrush current is isolated, and the PPTC with slow speed and low withstand voltage has been used. Compared with the flow protection device, the advantages are obvious. At the same time, the TBU can block the high voltage of 850V, has the characteristics of two-way protection, can be self-recovery, and the capacitance generated on the line is small. Therefore, since its inception, it has been a star device that Bourns is proud of. TCS high-speed protector: The same current-limiting device of semiconductor technology is also very fast, the response time is only 50nS (other current-limiting protection components are usually in the order of milliseconds), high precision, no loss, high reliability, for ultra-high speed differential The line provides overcurrent protection. GDT gas discharge tube: an indispensable overvoltage protection element. The uniqueness of the Bourns product is that it has developed an innovative FLAT wrinkle process GDT that makes the GDT's size much slimmer while maintaining its electrical isolation and circuit processing capabilities, making it unique in the industry. TISP Thyristor: A solid discharge tube different from MOV and TVS. Due to the semiconductor process, the response speed is faster and the life is longer than GDT. It is mainly used for lightning protection of signal circuits, and can clamp voltage in nanosecond time. Located at a lower 0V level than the breakdown voltage. Power TVS: As its name suggests, it is a high-power TVS with high throughput and wide operating range for power and industrial applications. Compared to MOV, PTVS provides a tighter clamping voltage with no loss mechanism to provide more reliable protection. SPD surge protector: strength player, rated current up to 100 kiloamperes, and competitors only tens of thousands of amps. In fact, in addition to the above-mentioned several star products, Shijian Technology can provide more comprehensive Bourns circuit protection components for industrial systems requiring complete primary, secondary and tertiary safety protection. It can be said that it is in competition. "The depth of the bench" is still quite impressive. Figure 1: Smart Grid Port Protection Level 3 Protection, and Optional Components Of course, as we said at the beginning of the article, comprehensive and reliable circuit protection is not enough to build a star alone. It is also necessary to form a targeted “tactical solution†based on the characteristics of each component based on actual combat needs. Nothing is wrong. Shijian has formed a number of "tactical drills" on the smart grid port protection, namely complete solutions, including RS232, RS485/RS422, CAN, Ethernet, USB, SIM card ESD protection and so on. In the design of these programs, Shijian has carefully considered from three aspects. First, choose the most suitable combination of components from the practical requirements of safety regulations. After all, it is the last word to satisfy safety regulations. The second is to complement each other according to the characteristics of the components themselves. For example, although TUB is unique in the performance of current protection response speed, it is a weakness to withstand transient high voltage impact. Therefore, it needs to be used together with high performance GDT to be more secure. This must be considered in the solution. . The third is to choose the core material number as much as possible to maximize the protection of customers' interests in price and supply security. Through the above three considerations, we can ensure the effectiveness and feasibility of the final solution. It can be said that in the battle of smart grid port protection, the star component products from Bourns provide the fundamental support. Shijian's targeted tactical scheme allows the full strength of each component to be fully utilized, thus revitalizing the overall situation. If you want to make a summary, that is - in the case of circuit protection, it is never a "material" to fight, a good overall plan can make you win from the beginning. Figure 2: RS232 Port Protection Solution Figure 3: RS485 port protection scheme Figure 4: RS422 Port Protection Solution Figure 5: CAN Port Protection Scheme Figure 6: Ethernet Port Protection Scheme Figure 7: USB Port Protection Scheme Figure 8: SIM card ESD protection scheme Shijian is a complete solution provider of quality components, engineering and supply chains for Asian electronics manufacturers including Original Equipment Manufacturers (OEMs), Original Design Manufacturers (ODMs) and Electronic Manufacturing Service Providers (EMS). Management services. Shijian works closely with suppliers and electronics manufacturers to position new technologies and trends and help customers incorporate these state-of-the-art technologies into their products. The Group has three R&D centers, and the professional R&D team is constantly creating new solutions to help customers improve cost-effectiveness and shorten time-to-market. The innovative solutions developed by Shijian can be applied in the fields of industry, wireless communication and consumer electronics. Headquartered in Singapore, Shijian is a Singapore-listed company with more than 600 employees and branches and offices in more than 25 cities in Asia Pacific, including Singapore, Malaysia, Thailand, Vietnam, China, Countries such as India, Indonesia, the Philippines, New Zealand and Australia. The annual turnover of Shijian Group in 2015 was close to US$830 million. Shijian began to develop its business in China in 1993. The headquarters in China is located in Hong Kong and has 11 branches and offices, 2 R&D centers and 2 logistics centers in various cities in China.
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