Overview
Electronic dry-type transformers are solid-state devices that replace traditional oil-cooled transformers. They use epoxy resin encapsulation and air/natural convection for cooling, eliminating fire hazards and environmental risks. These transformers are favored for their compact design, durability (30+ years lifespan), and compliance with green energy standards like IEEE C57.12.01. Unlike oil-filled models, they require no maintenance of cooling fluids, reducing lifecycle costs. Modern versions integrate IoT sensors for real-time monitoring of temperature, load, and efficiency, making them ideal for smart grid applications.
Structure and Working Principle
The core comprises grain-oriented silicon steel laminations to minimize eddy current losses. Primary and secondary windings use aluminum or copper conductors, vacuum-cast in epoxy resin for moisture and dust resistance. Heat dissipation relies on ventilated enclosures or forced air cooling in high-power models. Operating on electromagnetic induction, they convert input voltage (e.g., 11kV) to lower outputs (e.g., 400V) with minimal losses (<1% at full load). Advanced designs include phase-shifting for harmonic reduction, critical in data centers and semiconductor manufacturing.
Key Features
Fire safety is paramount—these transformers meet UL Class F (155°C) insulation standards. Noise levels are exceptionally low (<65dB), suitable for hospitals and residential areas. Efficiency tiers include DOE 2016 (USA) and EU Tier 2, with some models achieving Energy Star certification. Modular designs allow for easy capacity expansion. Optional features include IP65-rated enclosures for outdoor use, stainless steel casings for corrosive environments, and integrated surge protection.
Application Areas
Industrial: Power CNC machines, conveyor systems, and mining equipment. Commercial: High-rise buildings, shopping malls, and airports where fire safety is critical. Renewable energy: Step-up transformers for solar/wind farms (e.g., 690V to 33kV). Specialized uses include marine (saltwater-resistant coatings), underground subway systems, and modular data centers. Their ability to handle nonlinear loads (e.g., VFDs) makes them essential in modern manufacturing.
Maintenance and Precautions
Routine inspections should check for dust accumulation on windings, loose connections, and insulation degradation via megger tests. Thermal imaging every 6–12 months detects hotspots caused by unbalanced loads. Avoid installation near heat sources or in confined spaces without airflow. For coastal areas, specify anti-corrosion treatments. Always de-energize before maintenance—even dry-types can arc at high voltages.
B2B Procurement Guide
Specify kVA rating based on peak load + 25% buffer. For harmonic-heavy environments (THD >5%), request K-rated transformers (e.g., K13). Lead times range from 8–20 weeks for custom designs; stock units are available for common ratings (e.g., 500kVA, 11/0.4kV). Top manufacturers include Siemens, ABB, and Schneider Electric. Compare warranties (typically 5 years) and local service support. For bulk orders (10+ units), negotiate 5–15% discounts. Always request type test reports (e.g., short-circuit withstand).
Related Manufacturers
- 主营：安川伺服变压器、三相380V转220、小型伺服变压器、电子伺服变压器、三相干式变压器、伺服专用变压器、三相隔离变压器
- 主营：干式变压器、冷却风机
- 主营：bwd-4k-cd、bwd-4k-ce、bwd-4k-cf、bwdk-5700、起动器、bwdk-3209、bwd3k230b、hsd860-90、xmtb-3205、调节器、流风机、温控仪、变压器、电压表、数显表、hsd760-90、软起动、保护器、避雷器、电流表、hsd990-90、xmtb-5000、通风机、bwsk-7900、xmtb-3207
- 主营：s15非晶、s11铝质、s13配电、干式变压器、全铜芯、变压器、三相电、s11-50kva、s11全铜、定制s13、s13三相、开关柜、s11电力、硫化机、s11隔离、控制柜、s13油浸、边点线、载调压、切割机、s11三相、35kv电力、s11-800kva、35kv油浸、s11-200kva、s11-300kva
- 主营：干式变压器温控器、光纤测温
- 主营：注塑机、直燃机、废电缆、电子厂设备、电力电房、回收空调、二手箱变、水冷柜机、电缆电线、二手电柜、电缆回收、变压器拆除、变电站回收、电缆线回收、二手电缆线、配电房设备、螺杆式空调、二手发电机、二手配电柜、二手压铸机、高压配电室、制药厂设备
- 主营：阻尼弹簧减震器、变压器减震器、吊装减震器、座装减震器、水泵减震垫、空调减震器、风机减震器、空气减震器、橡胶减震器、减震橡胶垫、弹簧减震器、水泵台座、水泵减震台座
- 主营：隔离变压器、三相变压器、控制变压器、三相干式变压器、三相控制变压器、三相干式隔离变压器、大电流变压器、加热变压器、医用隔离变压器、移相变压器、稳压器、三相稳压器、单相变压器、电力稳压器、补偿式稳压器、三相调压器、单相调压器、柱式调压器、照明变压器、光伏变压器、电炉变压器、ups隔离变压器、变频电源、斯考特变压器
- 主营：储能柜、电力设备、升压一体舱、干式变压器、变流升压一体机、箱式变电站、油浸式变压器、低压抽屉柜、GGD抽屉式开关柜、交流低压配电柜、xl-21动力柜、动力柜、室内基业箱、光伏并网柜、高压预装式变电站、欧式箱变、高压开关柜、中置柜、10kv高压环网柜、高压环网柜、s11油浸式变压器、风冷储能集装箱、全液冷储能柜、液冷储能集装箱
- 主营：不锈钢电阻、智能负载电阻柜、机车制动电阻器
- 主营：移动变电站、矿用变压器、移动变压器、防爆变压器
- 主营：起动器、补偿柜、mns低压、电解粉、软启动、xdq低压、液阻柜、svg无功、开关柜、软起动、电解液、启动器、高压柜、启动柜、进相器、电解质、电动机、滤波柜、启动粉、水阻柜、滤波器、新百特、智能环保、工作电压、专一定制
- 主营：变压器、油浸式变压器、JP柜、干式变压器、箱式变电站、高低压开关柜
- 主营：R型变压器、隔离变压器、R型隔离变压器、电源变压器、控制变压器、三相隔离变压器、三相变压器、R型三相变压器、R型单相变压器、R型三相立式变压器、R型侧式变压器、R型立式变压器、环型变压器、非标变压器
- 主营：变压器、电抗器、矿用变压器、干式变压器、矿用干式变压器、滤波电抗器、并联电抗器、串联电抗器、正弦波滤波器、输入输出电抗器、进出线电抗器、油浸式变压器、配电变压器、矿用照明变压器
- 主营：油浸式变压器、高过载变压器、有载调压变压器、干式变压器、整流变压器、箱式变压器
- 主营：弹簧减震器、橡胶减震器、橡胶接头、空气弹簧、金属软管、波纹补偿器、薄膜式空气弹簧隔振器、气浮减震器
- 主营：开闭柜、绝缘高压、配电系统、干式变压器、绝缘气体、高低压电气、变频柜高压、绝缘充气柜
- 主营：起动器、进相器、补偿柜、电解粉、柜安装、切电容、软启动、液阻柜、电气柜、开关柜、高压笼、软起动、进相机、电解液、启动器、高压柜、启动柜、变频器、电解质、电动机、调速器、水阻柜、户外笼、水比例、控制柜
- 主营：矿用设备、铁路设备、救援设备、矿用隔爆型干式变压器、防爆电器、仪器仪表、路面机械、工程机械、智能制造
- 主营：挖掘机、链轮组件、飞臂吊、拆缸机、锯齿环、伸缩臂、皮带硫化机、聚能管、临时支护装置、搬运悬浮气垫、搬运坦克车、矿用三轮车、喷射器、船用风机、钻头、速凝剂、钻杆、电液推杆、洗靴机、手拉葫芦、除铁器、管道排渣器、消毒门、静电释放器、定向钻机