Protecting Sensitive CT/PT Coils | Vibration Resistant RT Cure Potting Compound
LW-8224A/B: Vibration-Resistant Epoxy for Outdoor CT/VT Transformers - 12-40.5kV Crack-Proof Encapsulation
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.
Critical Advantages
- 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
Applications
| Voltage Class |
Components |
| 12-40.5kV Systems |
Current/Voltage Transformers (CT/VT), Dry-Type Transformers |
| Medium/High Voltage |
Bushings, Insulators, Switchgear |
Processing Methods
| Method |
Key Benefit |
| Vacuum Gravity Casting |
Bubble-free encapsulation for intricate coils |
| APG (Automated Pressure Gelation) |
High-volume production of vibration-resistant parts |
Performance Properties
| 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) |
Simplified Formulation
| 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
Technical Superiority for Demanding Environments
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.
Advantage
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