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Views: 0 Author: Site Editor Publish Time: 2025-12-25 Origin: Site
Dry type transformers serve as a solid option for current power setups that focus on safety, minimal upkeep, and placement inside buildings. These units rely on air or gas for cooling and employ solid cast resin for insulation. As a result, they remove dangers linked to oil fires and spills while providing steady operation in wet, dirty, or tight spaces. Elements like premium silicon steel cores, even foil windings, and smart temperature monitoring help manage loads well and extend equipment lifespan. Even though no-load losses might appear a bit higher than in oil-based models, lower service needs and easier rules cut down overall expenses over time. Companies such as SHENGTE improve dependability further with tailored designs, careful quality checks, and strong engineering knowledge.
Dry type transformers stand out because they use air or gas as the main way to cool and insulate components, which avoids oil systems completely. Such a basic design choice boosts safety and makes setup simpler. The build often features open housings with vents, and this fits perfectly for indoor spots where fire risks and air flow matter most.
A vital part of the design involves cast resin. Layers between windings include DMD epoxy resin pre-impregnated cloth, and the whole unit hardens into a solid form that raises mechanical durability and strengthens protection against moisture, which is necessary for steady results.
Moreover, low-voltage windings follow a foil layout. This solves issues with spiral angles that appear in wire windings, and it balances ampere turns better. The outcome shows a more even magnetic field and less electrical strain inside the unit.
The selection of insulation materials in dry type transformers plays a major role in both working efficiency and protection levels. Epoxy resin stands out for its strong electrical resistance and ability to handle heat. It finds common use in cast resin models. The core consists of top-grade cold-rolled silicon steel sheets arranged in a three-step fully slanted joint pattern, and this setup lowers core losses while keeping noise low.
Systems rated for high temperatures, such as Class F (155°C) or Class H (180°C), permit operation at raised heat levels without damage. Such capability matters in places where surrounding conditions change or where small spaces restrict air movement.
Furthermore, solid insulation removes any chance of oil leakage. Therefore, fire dangers drop sharply, and requirements for containment areas or cleanup plans disappear.
Resistance to surroundings forms one of the best reasons to choose dry type transformers. Their closed winding build suits damp and dusty locations well, including tunnels or areas near the sea. Enclosures add extra shielding, and they offer protection grades like IP20, IP23, IP30, IP33, and others that covers guard inner parts against dust particles and water entry.
In addition, special coatings on metal sections and treated surfaces on clamps and fasteners increase lifespan. Clamps and fasteners receive unique surface handling, which also improves overall look. Without oil, meeting environmental rules becomes easier since no holding structures are needed.
Dry type transformers match indoor use naturally because of quiet operation and smaller size. For example, the SCB10-50 model produces noise at only 42 dB(A), and this level works well in places like medical centers or work buildings. Noise Level (DB(A)): 42.
Outdoor placement requires extra protective cases with proper IP ratings. Still, the design allows placement in crowded city areas. Good air flow remains important in either case to keep temperatures safe, and forced-air systems often assist.
Dry type transformers can show somewhat greater no-load losses than oil-filled ones, but safety and service benefits balance this out. Taking the SCB10 2500 KVA 10/0.4 kV 3 Phase High Voltage Cast Resin Dry Type Power Transformer as a reference, its rated no-load loss is 3,600 watts, while its load loss under specified conditions measures 17,100 watts. These numbers reflect strong performance for large units with reasonable energy use.
Heat control works well thanks to axial air paths and optional forced fans. The unit includes a cross-flow top-blowing cooling fan that runs quietly, provides strong air pressure, and looks attractive while raising overload strength.
Core improvements come from silicon steel layers and joint arrangements that cut eddy current losses. The core column uses F-class weft-free straps for binding, and epoxy resin covers the surface to lower no-load loss, no-load current, and core sound.
Current dry type transformers manage changing load patterns common in business and factory settings effectively. The SCB10 2500 KVA model shows strong performance, with a short-circuit impedance of 6% and a no-load current of 0.3%, indicating strong load-handling capability and minimal no-load power loss.
Cast resin windings handle heat expansion and shrinking during load changes without breaking, and this preserves strength over years.
Dry type transformers cut down long-term service needs greatly. Without insulating oil, tasks like fluid checks or strength tests vanish. Simple visual reviews usually suffice because of the open layout. The unit comes with an intelligent temperature controller that raises safety and trust during use so this system can warn staff early about potential issues before they develop into serious problems.
The absence of flammable liquids reduces regulatory requirements for fire safety equipment and environmental permits, streamlining project planning and compliance processes.
When installed correctly and checked now and then, dry type transformers provide many years of service. Moisture-proof cast resin insulation keeps results steady even in wet conditions. Strong build resists shaking, and this reduces wear on windings and core sheets over time.
Remote sites benefit significantly from extended maintenance intervals, leading to great reductions in travel-related expenses.
Places where fire safety ranks highest—such as medical facilities, air terminals, underground trains, tunnels—clearly prefer dry type units. Schools also choose them for quiet running and safe insulation materials.
Data centers form another important area where steady performance under shifting loads proves vital. The SCB10/11 315 KVA 10 /11 0.4 Kv 3 Phase High Voltage Indoor Cast Resin Dry Type Power Transformer is suitable for medium indoor power demands perfectly.
Proper unit size relies on highest load studies, growth plans, and expected surrounding heat. Choosing the right heat class ensures steady temperatures throughout use.
SHENGTE transformer models, including the SCB10-1600 and SCB10-2500, provide options such as high voltage ratings of 11 kV, 10.5 kV, 10 kV, 6.3 kV, or 6 kV, along with voltage regulation ranges of ±5% or ±2×2.5%, ensuring flexible adaptation to diverse grid requirements.
SHENGTE acts as an expert maker focused on high-quality dry type transformers that stress safety, energy savings, and care for the surroundings. With many years in the field, SHENGTE supplies a broad selection of cast resin transformers built for varied uses—from office structures to factory sites.
The engineering group partners closely with buyers to adjust unit details according to placement needs, load changes, and rule standards in markets worldwide.
SHENGTE shows strong quality focus through strict testing steps, ISO-approved production methods, and quick technical help during the entire product span.
Whether planning system updates or starting fresh power designs, SHENGTE provides not just equipment but lasting working trust.
Q: Can dry type transformers be used outdoors without enclosures?
A: They can be used outdoors if housed in weatherproof enclosures rated for environmental exposure; otherwise, they are best suited for indoor environments.
Q: How do I determine the correct KVA rating for my system?
A: The correct rating depends on your peak load demand, future expansion plans, duty cycle, and ambient temperature conditions; consulting an engineer is recommended.
Q: Are dry type transformers compliant with fire safety regulations?
A: Yes, they are inherently safer due to non-flammable insulation materials like epoxy resin and do not require oil containment systems often mandated by codes for oil-filled units.
