FRP Ventilation Stays for Dry Transformer – High Insulation & Heat Resistance
Introduction
Dry-type transformers are widely adopted in urban power grids, commercial buildings, industrial parks, and offshore power systems for their safety, environmental friendliness, and fireproof performance. The stable operation of dry-type transformers largely depends on standardized internal insulation support and smooth heat dissipation structure. As a core structural insulation component, FRP ventilation stays for dry transformers undertake dual functions of coil spacing support and vertical air duct forming, effectively solving overheating risks and insulation failure problems of transformer windings.
Manufactured by professional pultrusion technology with high-quality alkali-free fiberglass and thermosetting resin, our FRP ventilation stays feature high mechanical strength, superior electrical insulation, stable heat resistance and strong corrosion resistance. They are ideal replacement parts for mainstream dry-type transformers and shunt reactors worldwide.
Product Overview: What Are FRP Ventilation Stays?
FRP ventilation stays, also known as fiberglass ventilation spacers or insulation support strips, are continuous pultruded composite profiles specially customized for dry-type transformer internal structures. Common profiles include I-shape, rectangular, flat and angular types, among which I-section FRP ventilation stays are the most popular for their larger ventilation channel and better heat dissipation effect.
Different from traditional metal and wooden support strips, FRP composite materials eliminate eddy current loss and electric leakage hidden dangers. With strictly controlled production processes, our products fully comply with international electrical insulation standards, suitable for long-term continuous operation of high-voltage dry-type transformer equipment.
Core Advantages of Our FRP Ventilation Stays
Excellent Electrical Insulation Performance
Adopting high-purity alkali-free fiberglass and imported flame-retardant resin formula, the product boasts high breakdown voltage and ultra-low partial discharge. It maintains stable insulation performance under high voltage and strong electric field environments, effectively isolating transformer windings, ensuring safe electrical gaps, and avoiding short-circuit and insulation breakdown faults.
Superior Heat Resistance & Flame Retardancy
We support customized F-class (155℃) and H-class (180℃) high-temperature resistant grades, covering all mainstream dry-type transformer temperature resistance requirements. The product features excellent thermal stability, no deformation or aging under long-term high-temperature operation, and self-extinguishing flame retardant property, which greatly improves the fire safety level of power equipment.
High Mechanical Strength & Dimensional Stability
Integral pultrusion molding process makes the product have high tensile strength and compressive resistance. It can firmly support transformer coils for a long time, prevent structural deformation and winding displacement. With ultra-low water absorption and moisture resistance, it will not expand or shrink due to environmental humidity changes, ensuring long-term structural stability of transformer internal space.
Corrosion Resistance & Long Service Life
Free of metal corrosion risks, our FRP ventilation stays resist acid, alkali, salt fog and atmospheric aging. They are perfectly suitable for harsh scenarios such as coastal humid areas, chemical industrial parks and high-pollution power stations. The service life can reach more than 20 years, realizing maintenance-free operation and reducing equipment operation and maintenance costs.
Lightweight & Easy Installation
Compared with metal structural parts, FRP materials are lightweight with high specific strength. The product has smooth surface, precise size and no burrs. It is convenient for on-site cutting, assembly and construction, effectively improving transformer assembly efficiency and shortening project cycle.
Product Specifications & Customization
We provide full-size customized services for FRP ventilation stays for dry transformers to meet different transformer models and structural design requirements:
Common profiles: I-shaped, rectangular, flat strip, angle type
Size range: width 10–50mm, thickness 3–10mm, length customizable (1–3m)
Temperature grade: F-class 155℃, H-class 180℃
Standard compliance: comply with JB/T 10943 and international electrical composite material standards
Surface treatment: smooth finish, anti-aging, insulation reinforced treatment
All products support OEM & ODM customization. We can design and produce exclusive profiles according to customer drawings and sample requirements.
Wide Applications
Our FRP ventilation stays are widely used in various power transmission and transformation equipment, with stable and reliable performance recognized by global customers:
Dry-type distribution transformers & power transformers
High-voltage shunt reactors and wave traps
High-voltage frequency converters and power capacitor equipment
Indoor and outdoor high-voltage complete power distribution equipment
New energy power generation supporting power equipment
Why Choose Our FRP Ventilation Stays?
As a professional manufacturer of FRP electrical insulation composite materials, we focus on the R&D and production of transformer insulation structural parts for many years. We have mature pultrusion production lines and complete quality inspection systems. From raw material selection to finished product delivery, every link is strictly controlled to ensure consistent product quality.
We provide one-stop customized service including product design, size customization, quality testing and fast delivery. Whether for standard models or special non-standard structural requirements, we can quickly respond to customer needs and provide cost-effective solutions.
Get A Free Quote
If you are looking for high-insulation, high-temperature resistant and durable FRP ventilation stays for dry transformers, please feel free to contact us. We will provide free product samples, technical parameter support and the most competitive factory wholesale price for your project!
Keywords
FRP ventilation stays for dry transformer, dry transformer FRP spacers, I-section FRP ventilation stays, H-class insulation FRP support strips, transformer insulation ventilation stays
