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China SCB13 10kV Epoxy Resin Dry-Type Transformer Factory Suppliers with Forced Air Cooling Capacity

The SC(B)13 dry-type power transformer is a highly versatile solution used in various applications such as partial lighting, high-rise buildings, airports, docks, and CNC machinery across industries. As a leading product from our China factory, this dry-type transformer differentiates itself by not immersing its iron cores and windings in insulating oil. This design not only enhances safety but also allows for efficient cooling, Cooling methods for the SC(B)13 include Air Natural Cooling (AN) and Air Forced Cooling (AF). With natural cooling, the transformer can maintain continuous operation at extra capacity for extended periods. When utilizing forced air cooling, the output capacity can be increased by up to 50%, making it ideal for intermittent overload or emergency situations. However, it’s important to note that prolonged operation under continuous overload leads to increased load loss and resistance voltage, resulting in an uneconomical operating state, As a reliable supplier of high-quality power transformers, we ensure that our products meet the highest standards of performance and efficiency, making them a perfect choice for demanding environments

    Products Description

    This dry-type transformer utilizes advanced material technology and precision manufacturing processes, focusing on optimizing core performance indicators such as energy consumption, noise, insulation, and safety. It meets the high demands of modern power distribution systems for efficiency, environmental protection, and stability, making it widely suitable for industrial plants, commercial buildings, municipal infrastructure, and similar applications. Below is an overview of its four core advantages.

    1. Low Loss

    The product delivers exceptional energy-saving performance. Its no-load loss is reduced by over 20% compared to traditional SC(B)11 series transformers. The low-loss oriented silicon steel core minimizes hysteresis and eddy current losses, while high-conductivity copper coils reduce load loss. This not only lowers long-term electricity costs but also meets national energy-saving standards. The integral insulation and oil-free design ensures maintenance-free operation throughout its service life.

    2. Low Noise

    Noise levels are 10-15 decibels below the requirements of professional standard JB/T10088-1999. This is achieved through high-temperature annealing of the core to reduce magnetic noise, optimized winding tension for even electromagnetic force distribution, and vibration-damping rubber pads between the core and clamps. The design makes the transformer suitable for noise-sensitive environments such as residential areas and hospitals.

    3. Low Partial Discharge

    The transformer achieves an exceptionally low and stable partial discharge level of under 5pC. This is accomplished by using high-performance resin composites prepared via advanced foreign mixing and vacuum film degassing technologies, ensuring material uniformity and eliminating micro-bubbles. Vacuum and pressure casting of both high and low-voltage coils further enhances insulation compactness and reliability.

    4. High Safety & Environmental Protection

    The coils are vacuum-pressure cast, forming a dense, fully encapsulated resin insulation that is flame-retardant, explosion-proof, and pollution-free. Materials like the glass fiber used in the windings are self-extinguishing. The robust insulation structure prevents arc generation even during short circuits, eliminating risks of fire or explosion. The resin emits no toxic gases under high temperatures, ensuring operator safety and environmental compliance.

    Product Specifications

    Rated Capacity (KVA) No-load Loss (W) Load Loss (120℃)(W) No-load Current (%) Short-circuit Impedance (%)
    30 165 710 1.7 0.4
    50 235 1000 1.7
    80 320 1380 1.3
    100 350 1570 1.3
    125 410 1850 1.1
    160 475 2130 1.1
    200 545 2530 0.9
    250 630 2760 0.9
    315 770 3470 0.9
    400 850 3990 0.9
    500 1015 4880 0.9
    630 1200 5880 0.7
    630 1130 5960 0.7 4.5
    800 1330 6960 0.7
    1000 1540 8130 0.7
    1250 1825 9690 0.7
    1600 2140 11700 0.7
    2000 2700 14400 0.6
    2500 3200 17100 0.6

    Detail Pictures

    Frequently Asked Questions

    What are the key benefits of using this dry-type transformer?
    This dry-type transformer offers low loss (over 20% no-load loss reduction compared to SC(B)11 series), low noise (10-15 dB below standard requirements), low partial discharge (under 5pC), and high safety/environmental protection due to its maintenance-free, flame-retardant cast resin design.
    Where is this dry-type transformer typically installed?
    Due to its eco-friendly, explosion-proof, and flame-retardant features, it is widely suitable for noise-sensitive and high-safety environments, including industrial plants, commercial buildings, residential areas, hospitals, and municipal infrastructure.
    How does the transformer achieve such low noise levels?
    Low noise level (10-15 decibels below JB/T10088-1999 standards) is achieved by high-temperature annealing of the core to reduce magnetic noise, optimizing winding tension for even electromagnetic force distribution, and using vibration-damping rubber pads between the core and clamps.
    What makes the partial discharge level of this product exceptionally low?
    The transformer maintains a partial discharge under 5pC by utilizing high-performance resin composites processed with advanced mixing and vacuum film degassing technologies, combined with vacuum-pressure casting of both high and low-voltage coils to eliminate micro-bubbles.
    Does this dry-type transformer require regular oil maintenance?
    No, this transformer features an oil-free, fully encapsulated solid resin insulation design. It is completely maintenance-free throughout its entire service life, eliminating the risk of oil leakage and associated environmental hazards.
    What rated capacities are available for this series?
    According to our specifications, the rated capacity ranges from 30 KVA up to 2500 KVA, covering a wide range of power distribution demands with short-circuit impedances of 0.4% or 4.5% depending on the model capacity.