A core to capture weak magnetic signals strongly, and a shield to direct the magnetic influence away.
●Current Sensor Current clamp cores (clamp meters) measure by clamping around the power line, and for applications requiring high sensitivity, permalloy is sometimes used. Additionally, gap cores, which are cut from round or square laminated iron cores, detect magnetic fields by inserting Hall elements into the cut sections. Permalloy, which can detect even slight magnetic fields, plays an important role in controlling the batteries of hybrid and electric vehicles. ●CT (Current Transformer) Core Current transformers are devices that step up or down current values, and they are effective for reducing large primary currents to manageable levels on the secondary side. One example is the ZCT (Zero Sequence Current Transformer) used in distribution panels for leakage circuit breakers, which employs highly sensitive permalloy to reliably detect even minor electrical leaks. ●EI Core This is a core shaped literally like an "E" or "I." Permalloy cores have a higher permeability compared to other magnetic materials and are used in small power transformers and current transformers. *For inquiries or consultations regarding our products, please use the contact form on our website. 【Contact Us】https://www.ohtama.co.jp/contact.html
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basic information
Permalloy has a property that allows it to easily conduct magnetism. Magnetic sensors utilize this property, employing a core to capture weak magnetic signals and a shield to direct interfering magnetic fields away from the sensor. The core and shield are intrinsically linked. At Otama, we process cores and shields based on drawings provided by our customers, and we also accept contracts for heat treatment only. With years of experience, we can maximize the characteristics of different manufacturers and materials, so please feel free to consult with us.
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Applications/Examples of results
Main uses: - Automobiles - Power transformers - Current transformers - Leakage circuit breakers, etc. For other functions and details, please contact us.
Company information
Ohtama is a specialized manufacturer of magnetic shields made from permalloy. We consistently handle measurement, design, and production! In 2015, the Hachioji Minamino factory was completed and began operations.
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