Measuring contact resistance
When selecting relay, the power supply voltage of general control circuit can be used as the basis for selection. The control circuit shall be able to provide sufficient working current for the relay, otherwise the relay closing is unstable. After consulting the relevant data to determine the service conditions, find out the model and specification number of the required relay. If the old relay needs to be replaced, confirm whether the flange size is appropriate.
Before selecting gas relay, understand the necessary conditions: Buchholz Relay,Gas Relay,Buchholz Relay Transformer,Gas Relay Sealed Transformer Henan New Electric Power Co.,Ltd. , https://www.newelectricpower.com
The answer to the complete 3D, realistic natural effect is: the high-definition LED display that is emerging in the market, is jointly built by Chongqing Silian, Jin Lixiang and Jingdian.
The effect of the LED display model project in the Spring Festival Evening was also fermented at the just-concluded China LED show. In the display area, nearly two-thirds of LED display companies exhibited high-definition LED displays, and Jin Lixiang did not hesitate to add the words “Spring Festival Evening Display Provider†to his brochure.
"The focus of competition in LED application companies has shifted from the past technology competition to the competition of marketing methods." An industry veteran pointed out that the model project of the public familiarity is undoubtedly the best means for LED companies to rapidly expand the market. one.
More critically, successful model projects are more likely to gain customer trust and become the endorsement of LED enterprise technical quality assurance.
Opportunities and Challenges
"The biggest highlight of the Spring Festival Evening of the Year of the Dragon is creativity." Jin Lixiang, a middle-level reporter told the "High-tech LED" reporter, under the premise of ensuring product quality, creativity is the key to success. The stage effect of the Spring Festival Evening of the Year of the Dragon is not a separate project of Jin Lixiang. The design team of the company cooperates with other departments of the Spring Festival Evening to design the whole, propose ideas, and finally display the display as an imaging tool in the public.
It is reported that Jin Lixiang is a manufacturer of LED display products dedicated to the field of culture and performing arts. The large-scale projects undertaken in the past two years include the 11th European Youth Olympic Games, the 2011 Miss Italy Beauty Contest, the 2012 CCTV Spring Festival Gala, and the CCTV Lantern Festival. At the China LED Exhibition, Jin Lixiang produced the exquisite booklet of the model project that the company had organized in recent years and distributed it to the people who came to the booth. In the booth, Jin Lixiang deliberately set up a stage, invited professional dancers to showcase the unique stage effect of the LED display.
It is also based on the success of the model project, which makes Jin Lixiang still able to stand alone in the face of fierce price wars in the industry.
The above middle layer said that Jin Lixiang will not participate in the market price war. The company develops products according to the requirements of customers and can satisfy customers' needs to the greatest extent. Although Jin Lixiang's product prices are relatively high, other companies can't do such good results.
In fact, in the early stage of the gradual popularization of LED application products, the demonstration effect of the model project is the pursuit of each LED enterprise.
Zhou Yuancun, general manager of the marketing department of Dehao Runda (002005.SZ), told the "High-tech LED" that for the people, LED is a relatively unfamiliar industry, and there are fewer contacts. By doing the model project, the people can understand more. This industry and business. In the current LED market, companies are standing out, how to make their own company stand out, has become the focus of the company's marketing.
Zhou Yuancun revealed that Dehao Runda is also preparing to make several relatively large projects this year. After the completion of these large projects, this will be part of the company's publicity.
"The development of the model project shows that the country is vigorously promoting the LED industry." The relevant person in charge of Sanan Optoelectronics (600703.SH) told Gaogong LED that the project through the model project can stimulate market demand and let people Understand the performance of enterprise products.
Zhou Yuancun also said that the construction of the model project itself is both an opportunity and a challenge for enterprises. The model project is a test of the quality and technology of the company's products.
Model projects can demonstrate the merits of a company's products, as well as the company's product quality issues. If the quality of the product is not good, the model project may also have a greater negative impact on the company. 
Use the resistance gear of the multimeter to measure the resistance of normally closed contacts and moving points. The resistance value should be 0; The resistance of normally open contacts and moving points is infinite. From this, it can be distinguished which is normally closed contact and which is normally open contact.
â‘ The power supply voltage of the control circuit and the maximum current that can be provided;
â‘¡ Voltage and current in the controlled circuit;
â‘¢ The controlled circuit needs several groups and what form of contacts.
The demonstration effect of enterprise grabbing single model project will drive performance
[Text / high-tech LED reporter Peng Rongfang] On the evening of January 22, 2012, CCTV live broadcast of the Dragon Year Spring Festival Evening, it is probably not the magic of Liu Qian, or the performance of Yang Liping and her partner Wang Di. Love, but with the shocking stage effect of the whole Spring Festival Evening.