LE-8216/LH-8216: UL-Certified Room Temperature Cure Epoxy for CT/PT
Potting & Encapsulation
Flame-Retardant | UV/Weather-Resistant | High Dielectric Strength
Engineered for transformer encapsulation in Current Transformers
(CT) and Potential Transformers (PT), LE-8216/LH-8216 delivers fast
room temperature curing, eliminating energy-intensive ovens. This
UL-certified, flame-retardant epoxy system combines a modified
cyclic aliphatic epoxy resin (LE-8216) and weather-resistant
anhydride hardener (LH-8216) for superior electrical insulation,
moisture resistance, and vibration damping in demanding
indoor/outdoor environments.
Key Features & Benefits
Fast Ambient Cure: Saves energy with rapid curing at room
temperature.
Robust Protection: Shields CT/PT units from thermal shock,
contaminants, and mechanical stress.
Superior Insulation: High dielectric strength (>18 kV/mm) for
high-voltage applications.
Flame Retardant: UL 94 V-0 certified for safety-critical
installations.
Weatherproof: Exceptional UV/environmental resilience for outdoor
use.
Low-Viscosity Formulation: Penetrates intricate coils for void-free
gap filling.
Applications
Ideal for:
Transformer potting & encapsulation (CT/PT units)
Medium/high-voltage insulators, bushings, and switchgear
Electrical components requiring moisture-resistant protection
Flame-retardant insulation in power infrastructure
Processing Methods
| Method | Description |
|---|
| Vacuum Gravity Casting | Traditional method for bubble-free transformer encapsulation under
vacuum. |
| Automatic Pressure Gelation (APG) | High-efficiency process for mass production of CT PT epoxy
components. |
Material Properties
| Property | Value/Description |
|---|
| Curing Temperature | Room temperature (20-25°C) |
| Dielectric Strength | >18 kV/mm |
| Thermal Shock Resistance | Excellent (ASTM D2519) |
| Viscosity | Low (optimized for deep gap filling) |
| Flame Rating | UL 94 V-0 certified |
| Color Options | Customizable via LC-series paste |
Formulation Guide
| Component | Product | Proportion (pbw) |
|---|
| Epoxy Resin | LE-8216 | 100 |
| Hardener | LH-8216 | 100 |
| Filler | Silica Powder | 280-350 |
| Colorant | LC-Series* | 3 |
| *Add LC-series paste for UV-stable pigmentation. |
Why Choose LE-8216/LH-8216?
This electrical-grade epoxy system excels as a potting compound for
transformer manufacturing, offering unmatched electrical component
protection. Its saturated cyclic aliphatic structure ensures
long-term stability under thermal cycling, while silica-filled
reinforcement enhances mechanical strength and dielectric
performance. Compatible with vacuum casting and APG processes, it
integrates seamlessly into existing production lines—ideal for
creating reliable, flame-retardant CT/PT encapsulation with minimal
energy input.
Keywords: Room temperature cure epoxy, CT PT epoxy, transformer
potting, transformer encapsulation, electrical insulation epoxy,
potting compound, flame retardant epoxy, UL certified epoxy,
dielectric strength, vibration damping, moisture resistant, gap
filling, electrical component protection, fast cure epoxy, low
viscosity epoxy, thermal shock resistance, UV resistance, Automatic
Pressure Gelation, vacuum casting.
Advantage
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Example application image
