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Wear-resistant, high temperature, insulation materials which
- Polytetrafluoroethylene (engineering plastics) - (- 195 ~ 250) ℃ can be used for a long time. For corrosion-resistant parts, anti-friction wear parts, seals, insulation and so on. Silicone rubber - Upper temperature limit (100 to 300) ° C. For high and low temperature parts, insulation, pipe joints and so on. Fluorine rubber - the use of the upper temperature of 300 ℃, for chemical lining, senior seals, high vacuum plastic parts.s
What is the thermal aging and electrical aging of insulating materials?
- Electrical aging more common in high-voltage electrical appliances, the main mechanism is the occurrence of partial discharge of insulating material under high pressure, resulting in strong oxidant ozone. Ozone is easy to cause ozone cracking of the material. Partial discharge will produce nitrogen oxides, which combine with the moisture to produce nitric acid, corrosion of insulating materials; partial discharge of high-speed charged particles bombardment of insulating material molecules, will promote its ionization, fission and damage; in addition to local discharge will make dielectric loss Increased, local heat of the material, resulting in heat aging.s
What kind of insulation is the insulating layer of the aluminum plate?
- Ordinary heat conduction is made with fiberglass PP2. High thermal conductivity materials are made of thermally conductives
What is the main purpose of insulating materials?
- The role of insulating material is in the electrical equipment to separate the potential of the live part of the insulation, so the insulation material should first have a high insulation resistance and pressure strength, and to avoid leakage, breakdown and other accidents.s
What is the electrical performance of insulating materials
- The electrical insulating material is a material that is electrically insulated from the device and has a certain mechanical strength, typically having a resistivity of 106 to 1019.cm. Their function in electrical technology is as follows: 1 Insulate the conductor from the other parts; 2 Separate the conductors of different potentials 3 Provide the conditions for the energy storage of the capacitor 4 Improve the potential gradient in the high voltage electric field.s
What is the 8 ° C rule for insulating materials?
- The service life will be greatly shortened, such as ATR insulation material limit working temperature of 105 ℃, when the ultimate working temperature of 8, the life will be reduced by about half, which is the so-called 8 ℃ thermal deterioration ruless
What are the commonly used insulating materials?
- Mostly used to make insulating varnishes, winding wires, etc. Insulation materials are made of the above two kinds of materials made of various molding insulation materials, used as electrical appliances of the base, shell and so on.s
What insulating materials are used for transformers
- There are also NOMEX® insulation plates for the mat and the support structure. The insulation between high and low pressure is made of 0.76mm thick NOMEX® cardboard. Its impregnation process uses multiple VPI vacuum, pressure impregnation, high temperature drying (drying temperature of 180-190 ℃). At FPT, the highest voltage of this transformer is made to 34.5kV and the maximum capacity is 10000kVA. This technology is UL certified in the United States. Domestic transformer manufacturers use NOMEX® insulation materials and DuPont's manufacturing specifications (HV-1 or HV-2) and Reliatran Raytheon TM transformer technology standards such as the manufacture of H Type insulated SG-type dry-type transformers and the United States FPT's FB-type transformer has similarities, but the domestic product coil VPI impregnation process is different from the FPT company, it does not impregnate the entire transformer body, and only the coil impregnated. The whole body impregnated package integrity is good, but not only beautiful, but also in the processing must be done before the relevant product testing. Dipping paint is also easy to be filthy, relatively speaking in China the latter is more reasonable.s
What Does Deep Cycle Battery Mean
- A deep-cycle battery is a lead-acid battery designed to be often deeply used up the majority of its capacity. On the other hand, starter batteries (e.g. most automotive batteries) ...
Analysis of the advantages of sanding belt
- The sanding belt can machining of various shapes which requires high surface quality and precision.Sanding belt can not only processing common plane, internal and external circular...
Maintenance precautions of sheet metal rolls
- It has been recognized that sheet metal rolls mean aluminum materials whose thickness is between 0.2 mm to 500 mm, while their width is more than 200 mm and the length is less than...
How to use the pipe clamps
- Maybe a lot of people don't know, what is pipe clamp, more do not know how to use the pipe clamps. Pipe clamp is mounted to guide rail, rail welding in basis, or with screws, t...
How to calculate the torque values for bolts
- Bolt is a cylindrical with nut threaded fasteners, mechanical fastening parts, need to cooperate with nut. On the relevant national standards, bolt according to the performance int...