Overview of Class H High Temperature Silicone Fireproof Fiberglass Sleeving for Power Transformer Windings

Class H High Temperature Silicone Fireproof Fiberglass Sleeving for Power Transformer Windings is the primary insulation device outside the transformer box, used to ensure the insulation of the transformer winding wires. It consists of multiple parts, including the central insulated capacitor core, external insulated upper and lower porcelain components, etc. According to the voltage level, there are various forms of bushings, such as pure ceramic, oil-filled bushings, and capacitor bushings. During the operation of a transformer, the insulation sleeve through which the winding leads is one of its current-carrying components, which needs to withstand the load current and short-circuit current.

Characteristics of Class H High Temperature Silicone Fireproof Fiberglass Sleeving for Power Transformer Windings

Excellent electrical insulation performance: It can effectively prevent the adverse effects of current on wires, cables, or equipment.

High-temperature resistance: Made of high-temperature resistant materials, it can maintain excellent performance in high-temperature environments.

Corrosion resistance: It can effectively prevent chemical substances from causing corrosion damage to wires, cables, or equipment.

Antiaging performance: Maintain stable performance in long-term use and effectively extend service life.

Good mechanical strength and sealing performance: able to withstand instantaneous overheating in the event of a short circuit, with a small appearance, small weight, good sealing performance, strong versatility, and easy maintenance.”

Specification of Class H High Temperature Silicone Fireproof Fiberglass Sleeving for Power Transformer Windings

This sleeving protects power transformer windings. It uses fiberglass fabric coated with high-grade silicone rubber. This combination creates a strong, flexible tube. The material meets Class H temperature standards. It reliably handles continuous heat up to 180°C (356°F). Short-term exposure to much higher peaks is possible. This heat resistance is critical for transformer operation.

Fire safety is essential. The sleeving offers excellent fire protection. It resists ignition and burning. It self-extinguishes if exposed to flame. This prevents fires spreading inside the transformer. It also produces very little smoke. Low smoke generation improves safety during incidents.

Electrical insulation is a primary job. The sleeving provides strong dielectric strength. It effectively insulates windings. This prevents electrical shorts and failures. It withstands high voltages encountered in transformers. The insulation remains stable under thermal stress.

Durability matters in harsh transformer environments. The fiberglass core gives the sleeve good mechanical strength. It resists abrasion, tearing, and cutting. The silicone coating protects against moisture, oils, and chemicals. This prevents degradation over time. The sleeve stays flexible across a wide temperature range. Flexibility makes installation easier around windings.

Using this sleeving enhances transformer reliability. It protects windings from heat, fire, and electrical faults. It contributes to longer transformer lifespan. It helps prevent costly downtime and repairs. This product is a practical solution for demanding power applications.

Applications of Class H High Temperature Silicone Fireproof Fiberglass Sleeving for Power Transformer Windings

Power transformers generate intense heat during operation. This heat can damage standard insulation materials over time. Class H high temperature silicone fireproof fiberglass sleeving solves this problem. It protects transformer windings reliably. The sleeving withstands continuous temperatures exceeding 180°C. It handles even higher short-term spikes safely.

The core material is woven fiberglass. This gives the sleeve its basic strength and shape. Fiberglass resists heat naturally. A special high-temperature silicone rubber coats the fiberglass braid. This coating bonds tightly to the glass fibers. The silicone layer adds crucial protection. It seals the sleeve against moisture, oils, and chemicals. It provides excellent electrical insulation properties too. The combination creates a tough, flexible barrier.

Installing this sleeving is straightforward. Workers slide it directly over copper winding conductors. It fits snugly around the wire. The sleeving acts like a protective skin. It shields the wire insulation underneath from the transformer’s extreme internal heat. This prevents the primary insulation from degrading prematurely. It stops insulation breakdown that leads to dangerous short circuits. Preventing shorts avoids unexpected transformer failures and costly downtime.

The sleeving’s fireproof nature is critical. It doesn’t easily catch fire. It doesn’t support flame spread if exposed to an external fire source. This adds an important safety layer within the transformer. It helps contain potential internal faults. Using this sleeving extends the transformer’s operational life significantly. It reduces maintenance needs. It cuts down on expensive repairs caused by heat damage. This saves money over time.

Company Profile

PDDN Photoelectron Technology Co., Ltd. is one of the leading enterprises in power electronics technology and power products, which is fully involved in developing solar inverters， transformers, voltage regulators, distribution cabinets, thyristors， modules， diodes， heaters, and other electronic devices or semiconductors. We will be committed to providing users with high-quality, efficient products and considerate service.

It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. If you want high-quality Class H High Temperature Silicone Fireproof Fiberglass Sleeving for Power Transformer Windings, please send us inquiries; we will be here to help you.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment

By sea, by air, by express, as customers request.

Storage Conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

5 FAQs of Class H High Temperature Silicone Fireproof Fiberglass Sleeving for Power Transformer Windings

What temperature can this sleeving handle?
It handles constant heat up to 180°C (356°F). This matches Class H insulation standards. Short spikes won’t damage it either. The silicone coating keeps the fiberglass core protected. This makes it reliable for hot transformer windings.

Is it really fireproof?
Yes. The fiberglass base material won’t burn. The silicone coating resists flames too. Together, they create a strong barrier. This sleeving won’t easily catch fire. It also stops flames spreading if a serious fault happens inside the transformer.

Why use it on transformer windings?
Transformer windings get very hot and carry high voltage. This sleeving protects the wire insulation. It guards against scrapes, sparks, and heat damage. It also resists electrical shocks. This prevents short circuits. It makes the transformer safer and last longer.

How do you install it?
You slide it over the wires before assembly. It fits snugly. You can also cut it to the exact length needed. The material is flexible but strong. It bends easily around corners without breaking. This makes putting it on transformer coils straightforward.

What sizes are available?
Many sizes exist to fit different wire thicknesses. Common sizes range from small diameters to large ones. You need the right size for a tight fit. A loose sleeve won’t protect well. A too-tight sleeve is hard to install. Measure your wires first.