China Zhenglan Cable Technology Co., Ltd Company News

The wire and cable market is a key infrastructure market. With economic development and technological advancement, the demand for wire and cable continues to increase. In the next few years, including 2024, some cable markets will develop significantly, and some cable products will usher in broad market demand. Some people believe that markets are currently relatively stable and will continue to improve in the future, such as the following markets: Power grid construction my country's power grid construction is still in the development stage. The higher the voltage level, the more conducive to long-distance power transmission. In the future, large-scale cross-regional power grid construction in China will require long-distance power transmission. Currently, judging from the construction planning of high-voltage and ultra-high-voltage lines, supporting cables The demand is on the rise. According to the State Grid's plan, investment will increase to 520 billion yuan in 2023, a year-on-year increase of 4%. Power grid investment and new infrastructure are the driving force for the development of the cable market. Photovoltaic/energy storage/hydrogen energy market The energy sector is an important area of the wire and cable market. With the continuous development of my country's photovoltaic industry, my country's photovoltaic cable industry will still be in a stage of rapid development. It is expected that the size of my country's photovoltaic cable market will reach 18.56 billion yuan in 2023. In recent years, in order to implement the country's strategic deployment of "dual carbon" goals and promote the green and low-carbon transformation of energy, the Chinese government has introduced a series of policies and measures. In the next few years, new energy industries such as photovoltaics, wind power, and energy storage will maintain rapid growth, and the rapid development of their industries will promote the development of photovoltaic cable companies.  

Dear Customer Thanks for visiting our website.   Kindly note we will be on Chinese Traditional Spring Festival which is from February 7th(Wednesday) till 17th(Saturday). Work resume time is on February 18th(Sunday). Happy New Year!!!   During holiday, sorry to say that work will become slow and even stop. We will get back to you immediately after holiday. Thank you for your kind understanding.   Best Regards Zhengla Cable Technology Co., Ltd 2024.2.5

Aluminum alloy cables and aluminum core cables are two common power transmission line materials. Their conductor materials are different, so their prices are also different. Generally speaking, the price of aluminum alloy cables is relatively high. The following are some factors that affect the price: 1. Conductor material: The conductor of aluminum alloy cable is made of aluminum alloy, while the aluminum core cable is made of ordinary aluminum. The manufacturing cost of aluminum alloy is relatively high, which makes aluminum alloy cables relatively expensive. 2. Performance differences: Aluminum alloy cables usually have better electrical conductivity and mechanical properties and can meet some special requirements, which is one of the reasons for their higher price. 3. Manufacturing process: The production and manufacturing process of aluminum alloy cables is relatively complex and requires a higher level of technology and equipment, which will also affect its price.

Dear users,   Thank you for your continued support and trust! On this special Christmas season, we would like to extend our warmest wishes and greetings to you.   Christmas is a time filled with love and joy, and we hope you enjoy a cozy and joyful holiday season with your family, loved ones, and friends. May you feel an abundance of warmth and happiness during this festive time and have a wonderful New Year ahead.   As a token of appreciation for your ongoing support, we will continue to strive to provide you with high-quality services and products that cater to your needs. In the coming year, we will keep innovating and improving to bring you more surprises and convenience.   Wishing you and your family an unforgettable Christmas and a prosperous New Year! May the new year bring you endless happiness, health, and success!   Once again, thank you for your support, and Merry Christmas!   Warmest regards Zhenglan Cable    

Medium voltage power cables mostly use cross-linked polyethylene insulation. Ordinary cross-linked polyethylene insulation cables are damaged by mechanical stress or external forces during installation and operation, or the cables are operated for a long time in a humid and watery environment, which can cause external moisture to penetrate into the interior of the cables. The chance of forming water trees under the action of the electric field is greatly increased, and water trees are transformed into permanent electrical trees under the action of the electric field, Causing insulation breakdown in a relatively short period of time. Once the outer protective layer of the cable is damaged, water ingress into the cable can cause corrosion of the steel strip and copper strip, decrease the insulation performance, and greatly shorten the service life of the cable. Therefore, the industry recommends using water resistant cross-linked polyethylene cables.

23. Where are the inner shielding layer and outer shielding layer of power cables located? What materials are used? What does it do? Answer: In order to have better contact between the insulation layer and the cable conductor and eliminate the increase in electric field intensity on the conductor surface caused by the roughness of the conductor surface, the conductor surface is generally covered with an inner shielding layer of metallized paper or semiconductor paper tape. In order to ensure better contact between the insulation layer and the metal sheath, an outer shielding layer is generally wrapped around the insulation layer. The outer screen layer is made of the same material as the inner screen layer, and sometimes it is also bound with copper tape or braided copper wire tape.   24. What should we pay attention to during the transportation, loading and unloading of cables? Answer: (1) During transportation, loading and unloading, cables and cable drums should not be damaged. It is strictly forbidden to push cable drums directly off the vehicle. Cables should generally not be transported or stored flat. (2) Before transporting or rolling the cable drum, it must be ensured that the cable drum is firm and the cable is wound tightly. The oil pipe between the oil-filled cable and the pressure oil tank should be fixed and not damaged. The pressure oil tank should be secure and the pressure indication should meet the requirements. 25. What aspects should be considered when selecting the cross-section of power cables? Answer: The following aspects should be considered: (1) The long-term operating current allowed by the cable; (2) Thermal stability in the event of short circuit; (3) The voltage drop on the line cannot exceed the allowable working range. 26. What are the advantages of power cables compared with overhead lines? Answer: (1) Reliable operation. Because it is installed in hidden places such as underground, it is less damaged by external forces and has fewer chances of failure. The power supply is safe and will not cause harm to people; (2) The maintenance workload is small and frequent inspections are not required; (3) No need to erect poles and towers; (4) Helps improve power factor.   27. What measures are taken to prevent cable fire? Answer: (1) Use flame-retardant cables; (2) Use fireproof cable brackets; (3) Use fire retardant coatings; (4) Fire partition walls and fire baffles should be installed at cable tunnels, mezzanine exits, etc.; (5) Overhead cables should avoid oil pipelines and explosion-proof doors. Otherwise, local pipe penetration or heat insulation and fire prevention measures should be taken.   28. What is a cable failure? How many common types are there? Answer: Cable failure refers to the failure of insulation breakdown of the cable during preventive testing or the failure of the cable line to cause a power outage due to insulation breakdown, wire burnout, etc. during operation. Common faults include ground faults, short circuit faults, disconnection faults, flashover faults and mixed faults.   29. According to the "Regulations on Safety in Electrical Industry", what are the conditions that electrical workers must meet? Answer: The following conditions must be met: (1) Healthy as determined by a doctor, with no illness that would hinder work; (2) Have necessary electrical knowledge, master relevant procedures, professional techniques and safe operation techniques according to their duties and nature of work, and pass the examination; (3) Be proficient in first aid methods for electric shock.   30. Where are the inner shielding layer and outer shielding layer of power cables located? What materials are used? What does it do? Answer: In order to have better contact between the insulation layer and the cable conductor and eliminate the increase in electric field intensity on the conductor surface caused by the roughness of the conductor surface, the conductor surface is generally covered with an inner shielding layer of metallized paper or semiconductor paper tape. In order to ensure better contact between the insulation layer and the metal sheath, an outer shielding layer is generally wrapped around the insulation layer. The outer screen layer is made of the same material as the inner screen layer, and sometimes it is also bound with copper tape or braided copper wire tape.