Category:Knowledge
ONE. What are the commonly used insulation materials for energy storage power harness?
1.PVC polyethylene common to everyone, such as UL1007, UL1015, UL1061, UL1430, UL1571 and other energy storage power harnesses, are all selected polyethylene (PVC) plastic, PVC polyethylene is a polyethylene epoxy resin as the basic multiple parts of the blend of materials, based on a variety of cables and wires in the provisions of the PVC recipe with a plasticizer, According to the regulations for various cables and wires, PVC is compounded with chemicals such as plasticizers, stabilizers, fillers, flame retardants, processing aids (lubricants), UV absorbers, additives, and preservatives for major applications, and is used as the key for the insulating layer and the sheath (the key is available in the four temperature levels of 70, 80, 90, and 105 degrees Celsius). Photovoltaic energy storage connector wire harness use more than the use of the period, so that the wire aging, insulation layer rupture, a significant decline in mechanical strength, resulting in short circuits between the wires, disconnection, lap, etc., resulting in wire harness burned out. New energy storage harness load source is the service object of the harness, usually refers to the user equipment; broadly speaking, the upper level of equipment is the next level of equipment load source. In telephone communications, the load source is also known as the source of words, the number of service equipment contained in the wiring harness, known as the wiring harness capacity, Figure 1 is a schematic diagram of the wiring harness. The electrical equipment on the storage connector vehicle selects the cross-sectional area of the wires used according to the magnitude of the load current. Long-time work of the electrical equipment can be used to select the actual capacity of the wire 60%; short-time work of the electrical equipment can be used to the actual capacity of the wire 60% - A. PVC material energy storage power supply harnesses based on the way to judge : When ignited, yellowish fire, black smoke from the exhaust pipe, the bottom of the fire is emerald green, malodorous smell.
2.PE high-pressure polyethylene everyone common 3266, 3385 and other energy storage power harness all is the choice of PE high-pressure polyethylene, high-pressure polyethylene with excellent dielectric strength (relative dielectric constant and dielectric loss angle tangent tgδ are not large), good organic chemical reliability, very low air permeability and small water absorption capacity, small ratio, does not contain toxicity, and good plastic deformation, easy to produce and process molding. It has good plastic deformation and is easy to be processed and molded. Key used for communication cable insulation. PE material energy storage power harness basic judgment: the surface layer is relatively smooth, when lit, the flame on the yellow and blue, dripping, there is a mild odor of dry candle.
3.PP polypropylene polypropylene appearance of milky white crystalline solid, more transparent, non-toxic, small water absorption capacity, only 0.03-0.04%, flammable. The ratio is 0.91, which is one of the common plastics with less A at this stage. The key to copper core cable insulation. PP polypropylene materials based on the way to judge: the surface layer is more polished, compared with PE, hard, when lit, the flame on the yellow under the blue, dripping, there is an odor, and only after that, there is a mild odor of dry candle.
4.XLPE/XL-PVC thermosetting plastic materials thermosetting plastic materials, the key used as an insulating layer, XLPEA high-temperature level of 150 degrees base identification method: cut a section of cable, in addition to the electrical conductor, the fire from the center just started to burn, followed by force to make the line pull off, the cross-section is very glossy!
5.PU raw materials with very good physical and organic chemical properties, commonly used in engineering machinery and equipment, such as machinery and equipment, electric A connecting wire and spring wire sheath. Basic identification methods: with magnetic, ductility is very good, when ignited and mixed with the rise and drop.
6.TPE/PO (thermosetting plastic polyurethane elastomer) low smoke halogen-free flame retardant material. Currently on the market, the base of the energy storage power harness, all use TPE/PO raw materials to do as the insulation layer material. Energy storage power harness as a customized strong electrical equipment internal line, must be based on the different characteristics of the goods, different application scenarios, to select different insulation materials, and then customized A energy storage power harness products.
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