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
Package Image
Shipment image
Example application image
