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 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 further 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 during processing such as bending, punching, and cutting, and easy processing into curved surfaces and various shapes). This significantly reduces the risk of surrounding damage and adhesion accidents during the transportation of materials in high magnetic field environments, especially during equipment replacement and renovation, 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 is possible
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basic information
- Measures can be taken for existing power ducts and other facilities by inserting them behind the cover of the indoor electrical distribution board, improving the electromagnetic environment indoors without the need for power outages or large-scale renovations. - Used for magnetic field measures at 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 worn 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 of a certain university (implemented under conditions where the power could not be turned off). - Magnetic field measures were implemented at 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 residential building near high-voltage lines. - During the MRI shielding construction, magnetic field measures were implemented due to the inability to relocate the ceiling power trunk cable that crosses 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 an analog luxury watch of a female staff member in the server room, magnetic environment measurements were conducted, and magnetic field reduction measures were implemented by installing a cover on the back of the existing distribution board ● Magnetic field reduction measures implemented for the power distribution duct directly below an ICT equipment room at a certain university (conducted 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 field countermeasures implemented during MRI shielding construction due to the inability to relocate the power supply trunk cable that crosses diagonally in the ceiling ● 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, we decided to measure the magnetic flux density and take appropriate measures.
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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 Construction Due to its lightweight and good workability, it is easy to perform upward work and bending construction 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 greatly 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 transmission lines nearby, magnetic shielding material was installed in the walls and ceiling of the second-floor children's room.
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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 dedicated lighting fixture, which costs around 100,000 yen. As a countermeasure, an MS sheet was retrofitted inside the upper lighting fixture cover to attenuate the magnetic interference, allowing us to avoid replacing the expensive fixture. 【Installation of MS Sheet on the Back of the Server Room Distribution Board Cover】 The issue originated from the malfunction of a staff member's luxury analog watch while working in front of the server room distribution board. Since power outage work was not possible, we decided to retro-fit an MS sheet on the back of 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 measurements and 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 exhibit excellent and original features across various fields, including home appliances, precision equipment, medical devices, construction, and transportation, as well as in areas such as equipment parts, special rooms, and architectural panels, thereby serving everyone effectively. "Reflecting the times and exploring the next generation" is our pride in our continuous development capabilities that lead the industry. We offer a variety of electromagnetic wave countermeasure products. Furthermore, to carry out these measures effectively and efficiently, we have established a system that allows us to conduct electromagnetic wave environment measurements, field surveys, construction advice, and shielding work consistently. Technology is not born overnight. Our employees cherish a proactive attitude towards "technologies that no one is doing," "technologies that are deemed impossible," and "unique technologies." In development, not everything is successful; in fact, failures are more common. However, it is also true that the byproduct technologies born from challenges support our company today.