Feb 10,2022
The unique performance of fire-resistant cables
Fire-resistant cables, also known as mineral-insulated cables or magnesium oxide cables, are copper-core, copper-sheathed cables whose insulation is made from the mineral material magnesium oxide powder. Mineral-insulated cables consist of two inorganic materials: copper conductors and magnesium oxide, encased in a copper sheath. The cable’s structure features an electrical-grade copper rod as the core conductor and a smooth, golden tube as the sheath; the inorganic mineral magnesium oxide powder is processed into an insulating material. As a result, these cables possess numerous unique properties.
Jan 25,2022
Precautions for Installing Waterproof Busbar Trays
Cable trays must not be lifted or secured using bare steel wire ropes. Waterproof busbar trunking must not be placed randomly or dragged onto the ground. In a dry, clean warehouse free of corrosive substances, the outer packaging of flexible cable trays should be sandwiched between the upper and lower wooden strips of the waterproof busbar trunking, and the packaging should be removed.
Jan 10,2022
What are the characteristics of high-voltage waterproof busbar trunking systems?
The high-voltage waterproof busbar trunking system features a clamping structure with high-strength, high-performance DMC insulating support blocks, offering excellent load-carrying capacity and dynamic thermal stability. It boasts strong overload capability and low temperature rise. The high-voltage waterproof busbar trunking system comes in a sealed enclosure, significantly reducing the system’s sensitivity to environmental factors and simplifying installation procedures. When carrying large currents, it can substantially decrease the frequency of electrical maintenance.
Dec 27,2021
Verification of High-Quality Waterproof Busbar Trunking System
Pay attention to the conductor material of busbars: Currently, there are three types of conductor materials—copper bars, aluminum bars, and copper-aluminum composite materials—each with significantly different prices. In addition to purity, it’s also important to consider the material’s mechanical properties after bending. The interfacial strength of copper-aluminum composite materials directly affects their machinability and reliability. This is a critical performance parameter for copper-aluminum composite busbars. Such materials can only be used in electrical equipment if they exhibit no blistering, no noticeable orange-peel texture, no delamination between copper and aluminum, and meet the minimum requirements for interfacial bonding strength during punching and shearing processes.
Dec 13,2021
The difference between compact waterproof busbars and air-insulated waterproof busbars
To clarify the difference between compact busbar trunking systems and air-insulated busbar trunking systems, we recommend first reviewing the professional specification definitions for common busbar trunking systems: The specification definition for compact busbar trunking systems is: “After covering exposed busbars with insulating materials, they are placed close to the enclosure of the channel.” The specification definition for air-insulated busbar trunking systems is: “The busbars are supported within the enclosure by insulating spacers and insulated by an air dielectric layer.”
Dec 08,2021
What are the defects in the outer fire-resistant layer of waterproof busbar trunking?
Traditionally, externally purchased fire- and water-resistant busbar trunking systems have employed compact-type waterproof busbars, which are encased in rock wool or high-temperature-resistant mineral materials and then protected by fire-rated panels to achieve fire resistance. When sufficient space is available, increasing the thickness of the external thermal insulation layer can significantly enhance the fire- and flame-retardant performance of these busbar trunking systems. For instance, depending on the type of external insulation material used, the fire-resistance rating of the waterproof busbar trunking system can be extended from 2 hours to 4 hours. By further thickening the fire-resistant layers, even higher fire-performance standards can be achieved. Such fire- and water-resistant busbar trunking systems are widely used in workshops.
Dec 06,2021
The development history of waterproof busbar trunking.
The waterproof busbar trunking system is a new circuit configuration developed in the United States, known as the "waterproof busbar trunking system." It uses copper or aluminum as conductors, supported by a non-hydrocarbon insulation layer, and then installed within a metal enclosure to form a new type of conductor. Currently, it has become an essential wiring method for high-rise buildings, factory electrical equipment, and power systems. However, when a building’s distribution system is not easily accessible, the distribution system becomes difficult to use. Moreover, this system can also enhance the aesthetic appeal of a building.
Dec 02,2021
Let’s take a look at some developments in PPR plumbing pipes.
PPR pipes remain a very common product today, and they offer quite a few advantages when in use. As a result, they’ve naturally become popular among consumers. When using them, it’s also important to understand their development history. Below, we’ll provide you with a brief introduction.