- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
Views: 0 Author: Site Editor Publish Time: 2025-11-13 Origin: Site
Overview of Dry Type Transformer Insulation Materials in 2025
Comparison with Oil-Immersed Transformers: Material Perspective
Primary Types of Insulation Materials Used in Dry Type Transformers
Performance Comparison of Insulation Systems in Practical Applications
Integration with SHENGTE's Product Lineup and Technological Advantages
Dry type transformers keep gaining ground in power setups. Folks want gear that's safe and green. In 2025, the big shifts come from better insulation stuff. This boosts how well they run and last. Plus, it cuts down on fire worries. SHENGTE steps up as a solid maker here. They roll out units with smart tweaks. These fit real-world needs just right. So, digging into the main types helps spot what sets them apart.
As the need for safe, efficient, and eco-friendly energy solutions grows, dry type transformers play a key role in today's power distribution systems. This change comes from better insulation tech that greatly improves how reliably they work, how well they handle heat, and how safe they are from fires. When you compare them to oil-immersed types, dry type transformer insulation materials provide a strong choice in places where fire danger, easy upkeep, or eco rules matter a lot.
Before we look at the exact materials, it's good to know that if you need a reliable maker who supplies top-quality transformer options with custom engineering help, SHENGTE is a trusted partner in the field. SHENGTE has been working since 2011. They have up-to-date production sites. Plus, they provide many kinds of dry type and oil-immersed transformers made for good performance, efficiency, and safety.
The insulation setups in dry type transformers have changed from old mica or cellulose-based items to strong epoxy mixes. This change happens because people need better heat resistance, like Class F or H levels. They also want stronger electrical protection and less chance of catching fire. Now, materials like poured epoxy resin, aramid fiber papers, and polyester-glass mixes make up the main parts of new designs.
The DMD epoxy resin pre impregnated cloth goes between the winding layers. Then, the whole thing hardens into a solid form. This covering keeps out empty spaces and fights off moisture well. Both are key for lasting a long time.
Also, world rules like IEC 60076-11 and UL 1562 shape how these insulation systems develop and get used. They set clear goals for how materials handle heat over time, electrical strength, and fire safety.
Dry type transformers use firm insulation methods like Vacuum Pressure Impregnation (VPI) or epoxy resin pouring. These skip the need for liquid fillers. On the other hand, oil-immersed types, such as the S11 30kVA 10kV 400V unit, use mineral oil as both an electrical protector and heat mover.
Oil immersed transformer use oil as the main insulation medium and rely on oil as the cooling medium. This setup works well for outside spots. However, it brings issues like oil spills, fire risks, and regular checks.
Dry type units show less fire danger because their insulation materials stop burning on their own. They also install easily inside without special holding areas. Oil types handle extra loads better thanks to their heat storage. But the safety differences often make dry types the better pick for important jobs.
Epoxy resin gets used a lot in cast coil transformers. That's because it has great mechanical power and stands up to the environment. It sticks closely to the wires and support items like fiberglass mesh. This creates one solid piece. It lowers the risk of small electrical sparks even in wet air.
The DMD epoxy resin pre impregnated cloth is used between the winding layers, and the overall solidification is formed. This setup allows for smaller designs without losing safety. It's especially useful where space is tight.
On top of that, epoxy resin fights moisture well. So, it works great in inside areas with little air flow or in seaside spots where water in the air is common.
Aramid-based insulation items like Nomex paper are built to work in Class H heat levels, up to 180°C. These materials hold up well against heat wear and physical breakdown.
People use them in spots that need high trust, like green energy setups or key factory jobs. Their strong electrical protection keeps things solid even when power demands change a lot.
These materials keep working well for many years under heat. That makes them a smart choice when planning transformers for hard work patterns.
For jobs that watch costs and don't need top heat handling, polyester-glass mixes provide a good fix. They often serve as layer separators in VPI dry type transformers.
They mix bendiness with electrical work well. This fits low to medium power needs. Also, they make building easier while meeting world rules for electrical protection.
These mixes work with different soaking resins too. You can adjust them for better heat flow or stronger build based on what the job needs.
How well something handles heat decides how long a transformer lasts. Dry type transformers do great at dealing with up-and-down loads. That's thanks to their solid insulation parts. Oil-immersed units like the S11 160kVA 10kV 400V model use oil's high heat capacity to control temperature. But this needs holding plans and eco thoughts.
The transformer is equipped with a cross flow top blowing cooling fan, it is with low noise, high wind pressure enhancing the overload capacity of the transformer. This design helps dry types stay within heat limits during busy times.
Dry type insulation systems need careful rating to avoid power cuts in hot surroundings. Picking the right materials makes sure they run steadily without losing quality.
One big factor for lasting reliability is water getting in. Dry type units use closed or covered windings to block water soak.
The casing can provide the further safety protection for the transformer, with the protection levels of IP20, IP23, IP30, IP33 This lets them fit in damp inside spots and partly covered outside areas.
Oil-filled units naturally fight water because oil doesn't soak it up. But they need good seals and steady tests to keep the oil clean over time.
Dry type insulation materials such as epoxy resin don't burn easily. They give off little smoke if they do catch fire. Plus, they often put themselves out. This is very important in places like hospitals or train stops where quick escape matters.
This differs a lot from oil-filled transformers. There, spills or breaks can turn into big fires without right holding.
S11 30kVA10kV 400V & S11 160kVA models: optimized oil circulation for thermal management, offering robust overload performance but requiring regular oil diagnostics.
For indoor settings or eco-sensitive zones, products like SCB10-30 dry type transformer offer excellent alternatives. The coil adopts axial cooling air duct, enhancing the heat dissipation capacity. Combined with intelligent temperature control and forced air cooling options, these units demand less maintenance while ensuring operational safety.
Dry type insulation systems let you change things a lot. If you need closer electrical gaps or special wire setups for loads with lots of harmonics, engineering help can adjust the transformer's shape just right.
You can match cooling plans to the insulation's heat levels. For Class F systems, natural air (AN) cooling is enough. For Class H setups, forced air (AF) cooling might be needed to spread heat best during steady work cycles.
In places with rough mechanical push or lots of dust, like mines or big factories, epoxy poured or aramid fiber insulation systems give top strength. They stand up to shakes and dirt bits. This helps them last longer in hard spots.
In areas with tough fire laws, such as airports or malls, poured resin systems that follow IEC/UL rules bring calm. These materials stop burning themselves and give off few bad gases in heat events.
For jobs like solar fields or wind machines that see loads change often, Nomex-based insulation systems provide better heat lasting without big power drops. You can mix types to get the best cost and work balance.
SHENGTE gives full engineering aid from start to finish. They help pick the best insulation materials for your voltage level, cooling wants, load type, and site limits.
During the winding process, the parameters such as the number of turns, arrangement would be precisely controlled to ensure consistency. This makes sure each custom unit matches your tech needs exactly.
Every transformer goes through tough factory tests. These include fake heat cycles and electrical stress checks. We utilize a complete set of machining and testing devices to ensure the quality of every product before it is shipped out.
Warranty plans fit the use spot, whether factory or business. They include far-off help for checks or upkeep tips when needed.
For any specific needs involving dry type transformer insulation materials or application-specific builds, reach out via SHENGTE’s official site. A dedicated team is available for consultations covering specification review through post-installation support.
Q: What makes dry type transformers safer than oil-immersed ones?
A: Dry type transformers use solid insulation like epoxy resin that is self-extinguishing and emits low smoke. This makes them ideal for indoor use in places like hospitals or commercial centers where fire risk must be minimized.
Q: Can dry type transformers operate outdoors?
A: Yes. With proper casing (e.g., IP23/IP33), dry type transformers can operate in outdoor environments. Their moisture-resistant encapsulated windings prevent performance degradation due to humidity.
Q: When should aramid-based insulation be chosen over epoxy resin?
A: Aramid-based insulation like Nomex is best suited for high-temperature or high-reliability applications such as renewable energy sites or continuous industrial loads where long-term thermal aging resistance is essential.
