Discussion on Irradiated Crosslinked Wire and Cable
High Frequency AC Power Supplies High Frequency Variable frequency AC power supply converts AC electric to pure sine waveform by through AC – DC – AC conversion, which is different from variable frequency speed controller and common AC voltage regulator.
High Frequency AC Power Sources, AC High Frequency Power Supplies, High Frequency AC Sources, AC Power Sources, AC Power Supplies Yangzhou IdealTek Electronics Co., Ltd. , https://www.idealtekpower.com
Irradiation cross-linking is the use of high-energy electron beam generated by an electron accelerator to bombard the insulating layer and sheath, break the polymer chain, and break every broken point into free radicals. The radicals are unstable and recombine with each other. After recombination, the original chain-like molecular structure becomes a three-dimensional network-like molecular structure and forms a crosslink. Second, the characteristics of irradiation cross-linked low-smoke halogen-free wire and cable 1, the large flow rate; irradiation cross-linked cable, after irradiation by high-energy electron beam, the molecular structure of the material from linear to three-dimensional network molecular structure, temperature resistance Grades are increased from non-cross-linked 70 °C to 90 °C, 105 °C, 125 °C, 135 °C, even 150 °C, than the same size of the cable's current-carrying capacity increase 15-50%.
2. Insulation resistance is large; the use of hydroxide as a flame retardant is prevented by irradiating cross-linked cables, thus pre-cross-linking during cross-linking and insulation resistance drop due to absorption of moisture in the air by the insulating layer are prevented. In order to ensure the insulation resistance value.
3, long service life, strong overload capacity; due to irradiation of polyolefin materials after crosslinking high temperature rating, high temperature, so extend the life of the cable in the process of using the cycle of heat.
4, environmental protection, safety; because the cable used in the materials are halogen-free environmentally friendly materials, so the cable's combustion characteristics meet environmental requirements.
5, product quality temperature; the quality of the traditional warm water cross-linked cable is subject to water temperature, agent manufacturing process, China wire and cable network. Com crosslinking additives and other factors, quality instability, and the quality of irradiation cross-linked cable depends on the electron beam irradiation dose, irradiation dose is controlled by the computer, less artificial factors, so the quality is stable.
Irradiation cross-linked low-smoke halogen-free flame-retardant wire and cable have the ability to prevent fire and have the ability to prevent or delay the spread of flame. The overload force is strong, and once it catches fire, it is halogen-free, low-smoke, non-toxic, non-corrosive, etc. Yuru High-rise buildings, hotels, hospitals, subways, nuclear power plants, tunnels, power plants, ore, petroleum, chemicals, etc.
VFP-H series variable frequency power supply is manufactured under SPWM mode; it is designed by MOSFET module as active component, and adopts other technologies as digital frequency division, D/A conversion, instantaneous feedback and sinusoidal pulse width modulation to make the capacity of single unit up to 150KVA. Isolated transformer used to enhance total stability, strong load applicability, high quality output waveform, and simple operation, small size and light weight. In addition, this power supply has many protective functions against short circuit, over current, over load and over heat to ensure proper operation.
Comparing to traditional frequency inverter power supply, our inverter power supply removes the transformer and frequency converter, by using pure high-frequency conversion technology, with built-in by AC/DC and DC/AC parts, our AC inverter power supply could give stable AC output with prefect output precision.
Because, our new technology does not need transformer for conversion and isolation, the power supply size can be reduced within the same output power rating, and not limited by the transformer, output frequency could reach 15 ~ 1Khz continuously adjustable.