Shanghai Wenyou Industry Co., Ltd.
Vision: More Safer,More environmentally friendly,More efficient Mission: Based on insulating materials ,Serving global electricity Service concept: Only for customet value added We are not afraid of
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Prefilled BPA Resin | Thermal Shock Stability | Room Temp Cure
Engineered for outdoor CT/VT transformers, this prefilled Bisphenol-A epoxy system delivers vibration-resistant potting for 12-40.5kV coils exposed to extreme weather. LW-8224A resin + LW-8224B anhydride hardener provide crack-resistant encapsulation protecting delicate windings from mechanical stress, temperature swings (-40°C to 155°C), and environmental degradation.
Vibration Damping: Shields sensitive CT/PT coils from operational stress
Outdoor Endurance: Superior UV/weather resistance for transformers
Crack Resistance: Withstands thermal cycling in low/high temperature conditions
Prefilled System: Ready-to-use precision formulation
Energy-Efficient: Room temperature cure eliminates oven dependency
| Voltage Class | Components |
|---|---|
| 12-40.5kV Systems | Current/Voltage Transformers (CT/VT), Dry-Type Transformers |
| Medium/High Voltage | Bushings, Insulators, Switchgear |
| Method | Key Benefit |
|---|---|
| Vacuum Gravity Casting | Bubble-free encapsulation for intricate coils |
| APG (Automated Pressure Gelation) | High-volume production of vibration-resistant parts |
| Property | Specification |
|---|---|
| Dielectric Strength | >20 kV/mm (ASTM D149) |
| Temp Range | -40°C to +155°C operational |
| Crack Resistance | Excellent (1,500+ thermal cycles) |
| Vibration Damping | 60%+ stress reduction vs. standard epoxies |
| Cure Conditions | Room temperature (24-72 hrs) |
| Color Options | Customizable (LC-Series paste) |
| Component | Product | Proportion |
|---|---|---|
| Epoxy Resin | LW-8224A | 100 pbw |
| Hardener | LW-8224B | 100 pbw |
| Colorant | LC-Series* | 3 pbw |
| *Add for UV-stable pigmentation in outdoor applications |
This electrical-grade potting compound combines prefilled precision with outdoor durability. Its optimized viscosity ensures complete gap filling for CT/VT windings, while room temperature curing slashes production costs. Validated for 12-40.5kV transformers, it delivers unmatched mechanical-electrical stability under thermal shock, vibration, and moisture exposure – ideal for dry-type transformers in renewable energy grids and substations.
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