Tanaka Electric
Tanaka Electric
Engineered to satisfy high-accuracy instrumentation, voltage correction, and modern distribution networks.
Understanding the atomic advantages and thermodynamic superiority of Fe-based nanocrystalline alloys.
In modern industrial applications, electrical energy management requires unmatched conversion efficiency, minimized physical footprints, and superb heat dispersion parameters. Traditional magnetic core materials, such as silicon steel sheets and manganese-zinc (MnZn) ferrites, are rapidly hitting physical ceilings regarding permeability, core losses, and operational temperature ranges. As a premier China nanocrystalline core transformer manufacturer, we have commercialized the usage of iron-based (Fe) nanocrystalline ribbons (typically containing Fe, Si, B, with small fractions of Nb and Cu) in high-power and high-frequency systems.
Nanocrystalline alloys are synthesized through ultra-rapid cooling processes (exceeding 106 °C/s) directly from liquid metal melts, resulting in a thin amorphous ribbon of approximately 20-30 microns. Subsequent thermal processing triggers a controlled nanocrystallization, forming grains sized 10-15 nanometers embedded uniformly within an amorphous matrix. This structure features an exceptionally high saturation flux density ($B_s = 1.25\text{ T}$)—nearly three times that of high-performance ferrites—while offering near-zero magnetostriction and incredibly low high-frequency core loss.
Initial permeability values ($\mu_i$) exceeding 80,000 allow for significantly reduced winding turn counts, driving down copper losses ($I^2R$) and reducing leakage inductance.
Operating with $B_s \approx 1.25\text{ T}$ allows engineers to design smaller magnetic components, achieving up to 50% physical volume reduction compared to ferrite-based counterparts.
The Curie temperature of nanocrystalline alloy is above 570°C. Magnetostrictive stability guarantees continuous, safe performance up to 120°C to 150°C without core degradation.
Registered Capital (RMB)
Advanced Production Equipment Sets
National R&D Patents
Senior & Intermediate Engineers
Established in 2005, Zhejiang Tanaka Electric Co., Ltd. is a high-tech enterprise specializing in the production, research, development, and sales of high-efficiency transformers and customized power distribution equipment. With a registered capital of 110 million RMB, we stand as a key industrial benchmark in China's transformer manufacturing landscape.
Our operation is powered by a robust technical team including 15 senior engineers, over 30 intermediate technicians, and 17 senior technicians. We host state-of-the-art facilities featuring over 120 sets of advanced machinery, such as CNC automatic winding machines, CNC static vacuum casting installations, automatic foil winding units, and microcomputer-controlled gradient curing furnaces.
We are fully certified under ISO9001, ISO14001, CE, and CCC quality management systems, assuring clients of absolute stability and zero-defect production pathways for global distribution.
| Business Type | Manufacturer & Exporter |
|---|---|
| Established | 2005 |
| Registered Capital | 110 Million RMB |
| Certifications | ISO9001, ISO14001, CE, CCC |
| Core Range | Power Transformers, Dry-type Transformers, Instrument CT/PT, Prefabricated Substations |
Implementing a closed-loop quality monitoring system from material raw-sourcing and vacuum-casting validation, through partial discharge testing, up to on-site assembly and logistical deployment.
How Nanocrystalline cores stack against conventional magnetic configurations in industrial environments.
| Core Magnetic Parameter | Fe-based Nanocrystalline | MnZn Ferrite (Power Grade) | Silicon Steel (CRGO) | Fe-based Amorphous |
|---|---|---|---|---|
| Saturation Induction ($B_s$) | 1.25 Tesla | 0.45 Tesla | 2.03 Tesla | 1.56 Tesla |
| Initial Permeability ($\mu_i$) | > 80,000 | ~ 3,000 | ~ 1,000 | ~ 8,000 |
| Coercive Force ($H_c$) | < 1.0 A/m | ~ 10 A/m | ~ 30 A/m | < 4.0 A/m |
| Core Loss (at 20kHz, 0.5T) | < 35 W/kg | > 120 W/kg | Not applicable (High loss) | ~ 85 W/kg |
| Curie Temperature ($T_c$) | 570 °C | 210 °C | 740 °C | 399 °C |
| Magnetostriction Coefficient | < 0.5 × 10-6 | ~ 4 × 10-6 | ~ 2.5 × 10-5 | ~ 2.7 × 10-5 |
Mapping technological demands, supply chain integration, and development roadmaps.
As international green initiatives accelerate, industrial buyers from North America, the EU, and East Asia are prioritizing core efficiency markers. Large-scale EV charger builders, solar grid developers, and industrial UPS integrators demand suppliers who can guarantee strict compliance, minimal idle-state losses, and scalable production schedules. At Zhejiang Tanaka Electric, we support global engineers by utilizing computer-modeled design packages and tailored annealing cycles. Our customized solutions support clients with diverse mechanical dimensions, specialized mounting plates, and high-frequency insulation classes, ensuring components match local operating regulations seamlessly.
Whether deploying modern step-up configurations for grid connectivity, low-loss distributions for city infrastructures, or precision CT/PT arrays for electrical monitoring, our engineering department designs systems targeting peak functional stability. In heavy industrial fields, for instance, we provide customizable dry-type step-up transformers with low partial-discharge values (< 10 pC) for hazardous atmosphere operations. Our oil-immersed distribution products are integrated with hermetically sealed expansion tanks, eliminating thermal degradation paths and dramatically extending operational lifespans under demanding cyclical loads.
Optimizing melt-spinning parameters to scale production of ribbons down to 15-18 microns, keeping eddy current losses minimal for high frequencies (50 kHz to 200 kHz).
Scaling magnetic field heat treatment chambers to control permeability profiles ($\mu$) and saturation linearity characteristics for current sense transformers.
Integrating real-time thermal sensors and optical fiber monitoring within resin structures to alert distribution grid systems before performance degradation occurs.
Engineering electric networks is a highly specialized task. A reliable manufacturer must support clients with deep regional knowledge and appropriate technical documentation. At Zhejiang Tanaka Electric, we supply full technical support folders with our products, including Type Test Reports, seismic safety calculations, short-circuit containment declarations, and dielectric endurance documentation.
To ease cross-border logistics and site commissioning, we configure our products to meet international installation frameworks:
Every nanocrystalline core and transformer winding undergoes comprehensive quality validation tests prior to dispatch:
Quick, authoritative answers to core material performance, delivery configurations, and engineering inquiries.
Nanocrystalline cores provide three times higher saturation flux density (1.25T vs 0.4T of ferrite). This allows for a significantly smaller core volume and footprint, combined with lower total losses at high frequencies, which reduces power consumption and heat dissipation requirements.
We supply full custom services including specialized terminal configurations, unique voltage ratios, dual-frequency ratings, high-altitude configurations, and bespoke mounting brackets, all tailored to meet local grid and installation standards.
Yes. To help clients streamline their sourcing processes, we offer procurement support for auxiliary power products, including customized distribution boxes, circuit breakers, cable terminals, and specialized bushings.
Typical lead times range from 4 to 6 weeks for standard models, which includes our strict quality inspection procedures. Fully customized designs or high-capacity power units generally require 6 to 8 weeks, depending on materials and engineering approvals.
Nanocrystalline materials maintain magnetic stability up to 120°C. With a high Curie temperature of 570°C, they exhibit much lower thermal drift compared to MnZn ferrites, preventing thermal runaway and efficiency drops in demanding environments.
Discover our range of heavy-duty, isolation, dry-type, and prefabricated substation designs.
