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Full Copper Winding Epoxy Resin Dry-Type Transformer SCB10 10kV High Efficiency Long Lifespan SCBH15-M

The SC(B)H15 nanocrystalline alloy dry-type transformer is a new type of high-efficiency and energy-saving transformer. This product combines the low loss of nanocrystalline alloy materials with the advantages of traditional epoxy resin cast transformers in high insulation, mechanical strength and many other aspects, and its iron core is made of nanocrystalline alloy strip. Compared with the traditional SCB10 silicon steel dry-type transformer, its no-load loss is reduced by 75~80%, and no-load current is reduced by 80%.

The SC(B)H15 product complies with the national standard GB 1094 Power Transformers and GB/T 22072-2008 Technical Parameters and Requirements for Dry-type Nanocrystalline Alloy Core Distribution Transformers.

    Product features

    This series of transformers features an optimized structural design, combining advanced materials and manufacturing processes to deliver outstanding electrical performance, mechanical stability, and adaptability. It is widely suitable for industrial production, commercial buildings, municipal engineering, and similar applications. Below is an overview of its core structural components and optional configurations.
    1. Iron Core
    The core is wound from high-quality nanocrystalline alloy strips, known for ultra-high magnetic permeability, low coercivity, and minimal core loss. This reduces no-load loss by over 30% compared to traditional silicon steel. Available in three-phase five-column or three-phase three-column wound designs, the rectangular cross-section is optimized through electromagnetic simulation to ensure uniform magnetic flux distribution, reduce leakage, and lower losses. The wound structure enhances mechanical strength, suppressing vibration and noise.
    2. High-Voltage Coil
    The high-voltage coil adopts a segmented cylindrical structure for even voltage distribution and improved withstand capacity. It is manufactured using vacuum casting with thin insulation and hermetic sealing, which enhances heat dissipation and protects against moisture and dust. For high-capacity windings, axial air ducts are integrated to promote airflow and prevent local overheating. This results in high voltage withstand performance, extremely low partial discharge (≤5pC), excellent dust resistance, and efficient cooling.
    3. Low-Voltage Coil
    The low-voltage coil uses a foil structure with DMD prepreg hot-pressed between layers, effectively resolving ampere-turn imbalance common in traditional wire-wound designs. The foil ensures uniform current distribution, reduces localized losses, and eliminates axial winding angles, significantly lowering axial electromagnetic forces during short circuits. The hot-pressed process enhances interlayer bonding, forming a solid, mechanically stable coil with low additional loss.
    4. Outer Casing & Configuration
    The enclosure can be customized in materials such as ordinary steel (cost-effective for indoor use), aluminum alloy (lightweight, corrosion-resistant for outdoor/humid environments), or stainless steel (durable for harsh conditions like coastal or chemical plants). Protection levels include IP20 (indoor, blocks solids >12.5mm) and IP23 (outdoor/semi-outdoor, protects against angled water ingress). High- and low-voltage busbar interfaces can be flexibly configured to match user layout needs, simplifying installation and improving system compatibility.

    Product Specifications

    rated capacity(KVA) connection group lable voltage combination(KV) no-load current(%) load loss(W) no-load loss(W) short-circuit impedance(%)
    High voltage(H.V.) L.V. tap range (L.V.)
    30 Dyn11 6 6.3 10 10.5 11 ±5% ±2×2.5% 0.4 1.6 710 70 4.0
    50 1.4 1000 90
    80 1.3 1380 120
    100 1.2 1570 130
    125 1.1 1850 150
    160 1.1 2130 170
    200 1.0 2530 200
    250 1.0 2760 230
    315 0.9 3470 280
    400 0.8 3990 310
    500 0.8 4880 360
    630 0.7 5880 420
    630 0.7 5960 410 6.0
    800 0.7 6960 480
    1000 0.6 8130 550
    1250 0.6 9690 650
    1600 0.6 11700 760
    2000 0.5 14440 1000
    2500 0.5 17170 1200
    1600 0.6 12900 760 8.0
    2000 0.5 15900 1000
    2500 0.5 18890 1200

    detail pictures

    SGBH15-M (1)
    SGBH15-M (2)
    SGBH15-M (3)
    SGBH15-M (4)
    SGBH15-M (5)
    SGBH15-M (6)

    FAQ

    Find answers to common questions about our SC(B)H15 epoxy resin dry-type transformers, including specifications, winding materials, applications, customization, testing, and quotation requirements.
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