It can be used for noise reduction of various electronic devices, magnetic shielding, and shielded rooms to reduce the effects of environmental magnetic fields near power transmission lines and distribution equipment.
KOYO MS Sheet (Magnetic Shield) is a material particularly suitable for shielding low-frequency alternating magnetic fields. It has minimal degradation of magnetic shielding performance due to processing such as bending, punching, and cutting, making it easy to process into curved surfaces and various shapes. Furthermore, by combining it with other materials, it is possible to significantly enhance the properties of the MS sheet. It is lightweight (amorphous metal + front and back PET film) and has good workability (with minimal degradation of magnetic shielding performance due to processing such as bending, punching, and cutting, and easy processing into curved surfaces and various shapes). This is especially beneficial during equipment replacement and renovation, as it greatly reduces the risk of surrounding damage and adhesion accidents during the transportation of materials in high magnetic field environments, allowing for safe construction. 【Features of Magnetic Shielding Sheet】 ● No magnetic directionality ● Lightweight and easy to handle ● Large size available (900×1800) ● On-site processing possible (bendable) ● Punching processing possible
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basic information
- Measures can be taken for existing power ducts and similar installations by inserting them behind the cover of the indoor electrical distribution panel, improving the electromagnetic environment indoors without the need for power outages or large-scale renovations. - Used for magnetic field measures for the control panel on the roof of the distribution center near high-voltage lines. - By covering the area with magnetic shielding material MS sheet to shield the low-frequency AC magnetic fields generated by the solar power inverter, electromagnetic wave radiation can be reduced. - Magnetic measures for the upper floors when installing additional equipment in the NMR room. - Due to the delay of an analog luxury watch used by a female staff member in the server room, magnetic field reduction measures were implemented by installing it behind the cover of the existing distribution board after measuring the magnetic environment. - Magnetic field reduction measures were implemented for the power distribution duct directly below the ICT equipment room at a certain university (implemented under conditions where the power could not be turned off). - Magnetic field measures were implemented for the control panel on the roof of the distribution center near high-voltage lines. - Magnetic field measures were implemented for the bedroom on the top floor of a residence near high-voltage lines. - During the MRI shielding construction, magnetic field measures were implemented due to the inability to relocate the ceiling power trunk cables that cross diagonally.
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Applications/Examples of results
【Applications】 ● Magnetic shielding for buildings in environments with strong magnetic fields near power lines, wiring, and substations ● Magnetic shielding around equipment that generates strong magnetic fields, such as MRI machines ● Magnetic shielding for equipment that is susceptible to geomagnetic and fluctuating magnetic fields 【Examples of Achievements】 ● Magnetic countermeasures for the upper floors during the installation of additional equipment in the NMR room ● Due to delays in the analog luxury watches of female staff in the server room, magnetic environment measurements were conducted, and magnetic field reduction measures were implemented by installing on the back of the existing distribution board cover ● Magnetic field reduction measures implemented in the power distribution duct directly below the ICT equipment room of a certain university (implemented under conditions where the power could not be turned off) ● Magnetic field countermeasures implemented for the control panel on the roof of a distribution center near high-voltage lines ● Magnetic field countermeasures implemented for the bedroom on the top floor of a residence near high-voltage lines ● Magnetic countermeasures implemented due to the inability to relocate the diagonal overhead power supply main cable during MRI shielding construction ● Reduction of electromagnetic wave radiation from solar power conditioner
Detailed information
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【Comparison of MS Sheets and Various Magnetic Shielding Materials】 Due to its higher shielding effectiveness in alternating magnetic fields compared to silicon steel sheets, it is effective for countermeasures near high-voltage lines and substations on mid-level floors of buildings. In terms of addressing issues in cable ducts, there are no other options due to weight and post-construction workability.
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Before construction, the magnetic flux density was measured, and measures were taken.
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[After the installation of one layer of sheet] Measurements after the installation of one layer of sheet revealed insufficient areas.
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[After the installation of the two-layer sheet] It has been proven that the measurements after the installation of the two-layer sheet are satisfactory.
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Magnetic Shielding Sheet for Ceiling and Beam-Type Installation Due to its lightweight and good workability, it is easy to perform upward work and bending installation on beams and ceilings. Especially during equipment replacement renovations, the risks of transporting heavy materials in and out, damaging surrounding finishing materials, and accidents due to adhesion are significantly reduced, allowing for safe construction.
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【Magnetic Shielding Sheet Ceiling/Wall Installation】 General interior workers can easily install it with screws. Being lightweight simplifies the surrounding protection during transport, improving work efficiency.
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Residential wall and ceiling construction Due to the presence of high-voltage power lines nearby, magnetic shielding material was installed in the walls and ceiling of the children's room on the second floor.
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Construction on the top floor: Shielding performance measurement scene. Due to the presence of high-voltage power lines nearby and the top floor being the son's bedroom, the work was carried out to measure magnetic attenuation in a sleeping position.
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[Examples of Noise Interference Countermeasures from SEM Upper Lighting Fixtures] After installation, noise entered the SEM, and a request was made to replace the specialized lighting fixture, which costs around 100,000 yen. As a countermeasure, MS sheets were retrofitted inside the upper lighting fixture cover to attenuate the magnetic interference, allowing us to avoid replacing the expensive equipment. [Installation of MS Sheets Behind the Server Room Distribution Board Cover] The issue began with the malfunction of a staff member's high-end analog watch while working in front of the server room distribution board. Since power outage work could not be performed, we decided to retrofit MS sheets behind the existing distribution board cover to attenuate the magnetic interference and alleviate the concerns of the staff sitting in front of the board. We will conduct measurement evaluations before and after the installation.
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Company information
Our mission is to add our unique ideas and know-how to the new materials that are continuously emerging, in order to meet the needs of various industries, and to propose them as new products with added functionalities. Our functional composite materials demonstrate excellent and original capabilities across various fields, including home appliances, precision instruments, medical equipment, construction, and transportation, as well as in areas such as equipment parts, special rooms, and architectural panels, thereby contributing to society. Our pride lies in our development capabilities that continue to lead the industry, reflecting the times and exploring the next generation. We offer a wide range of products for electromagnetic wave countermeasures. Furthermore, we have established a system that allows us to consistently provide everything necessary for effective and efficient implementation, from on-site electromagnetic wave environment measurement and surveys to construction advice and shielding work. Technology is not born overnight. Our employees value a proactive attitude, especially when it comes to "technologies that no one else is doing," "technologies that are deemed impossible," and "unique technologies." Not everything in development is successful; in fact, failures are more common. However, it is also true that the byproduct technologies born from these challenges support our company today.