What are the common insulating materials used for energy storage power harnesses?

I. What are the commonly used insulation materials for energy storage power harnesses? 1.PVC polyethylene common to everyone, such as UL1007, UL1015, UL1061, UL1430, UL1571 and other energy storage power harnesses, all use of polyethylene (PVC) plastics, PVC polyethylene is a polyethylene epoxy resin as the basic multiple parts of the blend of materials, based on a variety of cable and wire regulations. PVC polyethylene is a basic multi-component blend of polyethylene epoxy resin, which is used for various cable regulations, including plasticizers, stabilizers, fillers, flame retardants, processing aids (lubricants), ultraviolet adsorbents, additives, and preservatives for major applications, which are used for the insulation layer and the wire sheathing (at temperatures 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 working hours of electrical equipment can choose the actual capacity of 60% of the wire; short working hours of electrical equipment can be used to wire the actual capacity of 60% - A. PVC material energy storage power harness of the basic judgment: when ignited, yellowish flames, black smoke from the exhaust pipe, the bottom of the fire emerald green, malodorous odor. 2.PE high-pressure polyethylene everyone common 3266, 3385, such as the energy storage power cable Bundle 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, a small proportion of non-toxicity, and good plastic deformation, easy to produce and processed molding. Key used for communication cable insulation layer. 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 of only 0.03-0.04%, flammable. The ratio is 0.91, which is one of the common plastics with less A at this stage. PP polypropylene materials, the basis of judgment: 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, the XLPEA high-temperature resistant level of 150 degrees basic identification methods Cut a section of cable, remove the electrical conductor, with fire from the center just started to burn, and then 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 cable sheath. Basic identification methods: with magnetic, ductility is very good, when ignited and mixed with drops. 6.TPE / PO (thermosetting plastic polyurethane elastomers) low-smoke halogen-free flame-retardant materials. 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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