Outdoor Epoxy Resin UV-Resistant Low-Shrinkage HV Insulation 10-66kV

The LE-8216F/LH-8216F is an epoxy resin system engineered for medium/high-voltage electrical insulation (10-66kV). Featuring a modified weather-resistant anhydride hardener (LH-8216F) and low-shrinkage formulation, it delivers exceptional dimensional stability, superior arc resistance, and HB flammability rating. Ideal for vacuum-cast dry-type transformers, CTs/VTs, and critical insulation components.

Key Features & Advantages

Applications

Built for high-voltage electrical insulation:

Dry-type transformers

Current/voltage transformers (10-66kV)

Bushings, insulators, switchgear

Encapsulation of sensors & relays

Grid infrastructure components

Key Performance Data

*Cured system: LE-8216F/LH-8216F/Silica powder = 100:100:350*

Mechanical & Thermal Properties

Electrical & Safety Properties

| Volume Resistivity | 10¹⁵ Ω·cm | IEC 62631-3-1 |
| Arc Resistance | 181-198 sec | IEC 61621 |
| Tracking Resistance | ≥600 V | IEC 60112 |
| Dielectric Constant | 3.0-4.0 (50Hz) | IEC 60250 |
| Flammability | HB (UL94) | UL94/GB/T2408 |
| Hydrophobicity | HC1 Class | IEC 62073 |

Frequently Asked Questions (FAQ)

Q1: What makes LE-8216F suitable for outdoor HV applications?
A: Its cyclic aliphatic structure provides inherent UV/weather resistance, while low water absorption (0.08-0.15%) ensures stability in humid conditions.

Q2: What is the curing process?
A: Optimized for vacuum casting:

Pre-mix: 60-70°C/1-2h (100-300Pa)

Cure: 70-80°C/3-5h → 90-100°C/2-4h → Post-cure 130°C/12h

Q3: How does filler ratio affect properties?
A: Silica powder (300-360 pbw) enhances mechanical strength but must be uniformly dispersed. Adjust within range to balance viscosity vs. performance.

Q4: Is this system compatible with APG?
A: Designed for vacuum casting. For APG, consult Shanghai Wenyou for formulation adjustments.

Q5: What safety measures are critical?
A: Essential PPE: gloves, goggles, respirator. Maintain ventilation (3-5 air renewals/hour). Avoid skin contact—use barrier cream.

Shanghai Wenyou Industry Co., Ltd.mainly engaged in the advanced materialsof MV and HV insulation products for indoorand outdoor use, both suitable for APG andvacuum casting.

Our wide range of products includes epoxy resin, flame retardant resin, curing agents, outdoor modifiers, toughening agents, epoxy paste, demoulding agents, and fillers.

We have obtained ISO9001, ISO14001, SGS, and UL certifications, and our products comply with ROHS and REACH safety regulations.

Our high-quality products are used in high voltage electrical insulation applications and are exported globally. We are committed to providing stable products and excellent service to the global electricity industry.

High Quality Electrical Raw Materials
Epoxy resin

Release agent

Silica powder
Hardener
Color paste
Flexibilizer