Import Current Transformer Iron Core — Buy in wholesale FOB from Supplier in China

The current transformer iron core supplied by Beijing Yeke Electronic Materials Co., Ltd. is manufactured from iron-based nano-crystalline alloy strips, selected for high initial permeability and low core loss in precision measurement applications. Core dimensions include rectangular forms such as 70x90mm with 30mm thickness and ring cores like 305x490mm with 15mm thickness, each designed to meet specific excitation current and voltage requirements. The material's saturation flux density of 1.25T and initial permeability of 8x10^4 allow for accurate signal transformation under low ampere-turn conditions, critical for class 0.2S and 0.5S metering transformers.

Nano-crystalline cores from this supplier offer a balance between saturation performance and cost, sitting between silicon steel and Permalloy in magnetic properties. The density of 7.25 g/cm³ and lamination factor of 0.7 reduce overall weight by approximately 25% compared to equivalent Permalloy cores, while maintaining a linear operating range up to 130°C. These cores are not laminated but are wound from continuous ribbon, minimizing air gaps and enhancing magnetic homogeneity. The material's Curie temperature of 570°C ensures stability under transient overload conditions common in power systems.

These cores are primarily used in high-accuracy watt-hour meters, residual current devices, and precision current sensors within industrial and utility-grade power measurement systems. Buyers include manufacturers of metering equipment in Europe, North America, and Southeast Asia who require traceable magnetic performance under low-flux conditions. Packaging is in wooden cases with inner carton protection. Lead times and minimum order quantities are not specified and must be confirmed directly with the supplier. Trade terms are typically FOB Shanghai or CIF, depending on destination.

Beijing Yeke Electronic Materials Co., Ltd. is a supplier based in Shunyi District, Beijing, focused on soft magnetic materials for precision instrument transformers. The company is verified as a harbor-tier supplier with no public information on years of operation, workforce size, or revenue. Its listing shows no certifications, client references, or production capacity figures. The supplier's presence is limited to product specifications and contact details, with no response rate or average reply time recorded.

The company does not claim to be a manufacturer of the full transformer assembly but supplies only the iron core component. There is no indication of in-house testing facilities or quality control documentation beyond the provided magnetic parameters. Buyers should treat this supplier as a component vendor and verify all performance metrics independently before integration into final products.