The development of relay does not lead to scientific and technological innovation

2014-01-15

Magnetic hold relay became the indispensable important component of the instrument, magnetic relay is an important role in field application of automatic control, in recent years the increasingly fierce market competition, the various magnetic stick relay enterprises are launched the latest version of differentiated products, make the magnetic stick relay is beyond simple time domain basic elements of traditional concepts, especially the emergence of high-tech advanced technical performance index of the product, more to keep magnetic relay provides a broad stage, magnetic stick relay development cannot leave the innovation.   According to statistics, there are nearly 300 relay enterprises in China at present, most of which are producing low-cost electromechanical relays, while only a small number of enterprises are expanding the production scale of high-end relays. The industry believes that the production capacity of China's relay is constantly improving, the pace of innovation is accelerating, and the international competitiveness is also constantly enhanced. Both at the industrial level and the enterprise level, China has a certain competitive strength, and has stepped into the ranks of the world's relay industry. However, there is still a big gap between domestic enterprises and international manufacturers, which is mainly manifested in the general small scale of enterprises, weak profitability, low level of R&D investment, and insufficient innovation ability. It is understood that in 2011, the export of relays in China reached more than 38 million US dollars, with a year-on-year decline of 38.52%, but a year-on-year increase of 2.02%. The pace of import slowed down a lot, and the impact on the domestic market weakened. The import of 11 relays was 35.46 million US dollars, down 39.58% year-on-year, and down 8.74% month-on-month. At present, the competition in the relay industry is fierce at home and abroad. Thousands of enterprises produce the same product. From time to time, some enterprises are rapidly eliminated from the relay industry market due to quality problems, reputation problems, low product science and technology content, backward technology and other problems. The prosperity of the whole market has brought a large number of investors, and the competition among small and medium-sized enterprises is particularly fierce. In such an era of explosive economic and technological knowledge, only by constantly updating the technical knowledge and technology can enterprises have vitality and better adapt to the development of society. The relay industry has turned a corner, and the positive factors in China's economic operation are also increasing, showing a momentum of stabilization and improvement. However, we must be soberly aware that the foundation for economic recovery is not yet stable, solid or balanced, and we must not be blindly optimistic. This can be mainly reflected in the following aspects: First, the prospect of the international financial crisis is still quite uncertain, and the pressure of declining external demand is still very strong and may last for a long time. Second, economic development is still lack of internal motivation and vitality to cope with the crisis and overcome difficulties, and the support of national policies still plays an important role in supporting the development of enterprises and economy. Third, due to the weakening of external demand, the contradiction of excess capacity in the domestic relay industry and many industries is highlighted, which forms a great constraint on the recovery of the industry's growth rate. The development of relay is inseparable from innovation 1. Innovative talents are the most active and critical factor in an enterprise, and they are the foundation of technological innovation. The government should improve the supporting policy system to support enterprises to absorb scientific and technological talents, effectively encourage enterprises to increase investment in talent development and scientific and technological innovation, and guide the flow of outstanding talents to enterprises. In addition, the enterprise must do a good job of staff expectations management. 2. The needs of China's economic transformation and industrial upgrading put forward higher requirements for scientific and technological innovation for enterprises. relay enterprises should solve the problems of private economic development, be good at carrying out effective technological innovation according to their own characteristics, and pay attention to the strategic management of technological innovation. Enterprises of relays in different regions, industries and development stages should adopt corresponding innovation strategies. Only by technological innovation ca

A brief talk on matters needing attention in purchasing magnetic latching relay

2014-01-23

Magnetic stick relay with isolation function is automatic switch components, are widely used in remote control, remote sensing, communication, automatic control, mechanical and electrical integration and power electronic devices, is one of the most important control element, with the development of watt-hour meter, magnetic stick relay has become an important and indispensable part of watt-hour meter, to cooperate the installation and use of watt-hour meter, requirements of its small size, load capacity, input and output isolation degree is high, low consumption, low temperature rise, its main technical indicators for use in different environments. Magnetic latching relay is an electronic control device, which has a control system (also known as the input loop) and a controlled system (also known as the output loop). It is usually used in automatic control circuits. In fact, it is an "automatic switch" that uses a small current to control a large current. Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit.   A good product is what every buyer is concerned about. Next, what should we pay attention to when buying a magnetic latching relay? Size such as magnetic stick relay is the first choice to work, choose the studio size when the size of the test sample size according to customers to choose, now the magnetic stick relay made of PVC board, glass fiber reinforced plastic and materials such as stainless steel, so there is no doubt that the PVC board is the best choice of the material magnetic hold relay, beautiful light, high strength and corrosion resistance. The network environment of small and medium-sized enterprises is generally not too complicated, so the magnetic latching relay with simple operation and friendly interface can basically meet the needs of users. In addition, it can minimize the training cost of enterprises for the use of magnetic latching relay equipment. The second is the spray settlement of the magnetic latching relay. The national standard stipulates that: 1 ~ 2ml/80cm2. H, 80cm2 refers to the area of the funnel. The spray settlement of the magnetic latching relay can also be adjusted according to the height of the tower spire. How the equipment can be qualified is not determined by the manufacturer or individual. It really needs to pass the third party quality testing. Each type of equipment has passed the third party quality testing. As for the construction of SMEs informatization, it is difficult for the decision-makers of the enterprises to make correct decisions. Therefore, seeking the external brain is a good way to solve the problem, so as to better understand the needs, clear goals and make the right decision in the whole selection process. The magnetic latching relay system is a long-term investment for small and medium enterprises, so its scalability should be considered when selecting the solution. Magnetic latching relays independently developed by manufacturers are generally completely realized based on software, and can be easily made into components or middleware products for secondary development and transplantation, while hardware products can be extended to a much smaller range once put in. The enterprise should determine the plan according to the demand.

The demand of relay is diversified, and high-end industrialization is the profit point

2014-02-20

With the accelerating pace of restructuring in the relay industry, the competition among enterprises in the relay industry in the future will be the competition between the quality and brand of electrical products, and the products will develop towards the direction of high technology, high parameter, strong corrosion resistance and high life. Under the huge demand environment, the domestic relay manufacturing industry will also present a better development prospect.

Wiring diagram of current transformer

2014-03-27

Wiring diagram of current transformer Before the wiring diagram of the current transformer, let's take the ratio of the current transformer 200A to 5A as an example: the current flowing through 200A once, the current flowing through 5A twice is corresponding to the current flowing through 5A, and its "current changing ratio" is 200÷5 = 40 (times). For this reason, the actual electricity consumption of the watt-hour meter is defined as the amount of electricity read by the meter (current month minus last month) ×40. Wiring diagram of ammeter and transformer on the distribution cabinet is as follows: 1. The above diagram is the wiring diagram of three current transformers; 2. The following diagram is the wiring diagram of two current transformers. Ia+Ib+Ic=0 So: Ia+Ic=-Ib So: The green ammeter indicates the B-phase current. The three-phase four-wire active watt-hour meter connected by current transformer shares the connection mode of voltage line and current line, which is quite a few in agricultural electricity metering. In this method, three voltage leads are eliminated, and the current transformer K1 is connected to the power supply L1. Through the current secondary line, the voltage pile head of the electricity hour meter and the current pile head are connected in a continuous way. This connection method aims to reduce the number of secondary wiring roots. However, this method is very dangerous: first, the secondary circuit of the current transformer should not be grounded, otherwise, it will cause a short circuit and burn out the electricity meter. However, the regulations stipulate that the secondary loop of the transformer must be grounded at some point. Second, because the voltage and current terminals of the electricity hour meter and the secondary circuit of the transformer are all with 380/220V voltage, we should always pay attention to avoid accidental touch in the live work. Third, the zero line connected to the watt-hour meter should not be mistaken or replaced with any other one, otherwise the current coil of the watt-hour meter will burn out due to short circuit, and the current transformer will increase the circuit impedance infinitely and tend to open circuit due to the connection of the secondary circuit to the voltage coil of the watt-hour meter. All these are very dangerous.

Notice on the 2017 Spring Festival Holiday of Gretel Appliance

2017-01-09

The Spring Festival of 2017 is approaching. Considering the production and work needs of all departments during the festival, we hereby inform you of the holiday matters of New Year's Day and Spring Festival as follows: Spring Festival holiday: January 20 to February 5 holiday, a total of 17 days. Starting from February 6th (10th Monday).