Crack Resistant High Dielectric Strength Room Temperature Cure Epoxy Casting Resin for Electrical Insulation
Engineered for outdoor electrical insulation in Current Transformers (CT) and Potential Transformers (PT), this modified BPA epoxy system delivers crack-resistant encapsulation for 10-35kV terminal posts, bushings, and transformer components. With pre-mixed fillers in both resin (LW-9229A) and hardener (LW-9229B), it ensures consistent thermal shock resistance and long-term durability in harsh environments.
- Crack Resistance: Withstands thermal cycling for outdoor applications
- High Dielectric Strength: Critical for 10-35kV insulation systems
- Pre-Mixed Fillers: Simplified processing, no weighing errors
- Room Temperature Cure: Energy-efficient transformer manufacturing
- Moisture & Chemical Resistance: Protects CT/PT units from environmental degradation
Ideal for:
- 10-35kV sealed terminal posts
- CT/PT transformer potting & coil encapsulation
- Outdoor bushings, insulators, switchgear
- High-voltage electrical insulation components
| Method | Benefit |
|---|---|
| Vacuum Gravity Casting | Bubble-free encapsulation for complex geometries |
| Automatic Pressure Gelation (APG) | High-yield production of crack-resistant parts |
| Property | Value/Description |
|---|---|
| Filler Status | Pre-mixed in resin & hardener |
| Dielectric Strength | >22 kV/mm (ASTM D149) |
| Thermal Shock Resistance | Excellent (1,000+ cycles, IEC 60216) |
| Crack Resistance | Optimized for outdoor exposure |
| Viscosity | Slurry liquid for deep gap filling |
| Certification | UL 94 V-0 (Flame Retardant) |
| Component | Product | Proportion |
|---|---|---|
| Epoxy Resin | LW-9229A | 100 pbw |
| Hardener | LW-9229B | 100 pbw |
| Colorant | LC-Series* | 1 pbw |
*Color paste optional for UV-stable pigmentation.
This electrical-grade epoxy combines BPA's structural strength with pre-mixed fillers for unmatched crack resistance in outdoor applications. Its slurry viscosity ensures perfect gap filling for CT/PT windings, while room temperature curing reduces production costs. Ideal for 10-35kV terminal posts and transformer encapsulation, it delivers lifelong moisture resistance and dielectric performance under thermal cycling.
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