LE-9216F/LH-9216F: UL 94 V-0 Epoxy System for Flame-Retardant MV
Switchgear Insulation
BPA Epoxy Resin + Anhydride Hardener for Critical Fire Safety
Product Overview
LE-9216F epoxy resin and LH-9216F hardener deliver UL 94 V-0
certified flame retardancy for MV switchgear, transformers,
and insulators. This halogen-free system creates self-extinguishing
encapsulation (extinguishes in <3 seconds), meeting IEC 61439
safety standards while maintaining exceptional dielectric strength
(>25kV/mm) and arc resistance.
Key Features & Compliance
| Property | Performance |
|---|
| Fire Safety | UL 94 V-0 • Low smoke density • Char-forming barrier |
| Electrical | CTI >600V • Arc resistance >180 sec • Volume resistivity
>1E14 Ω·cm |
| Environmental | Hydrolytic stability • Chemical resistance to cleaning agents |
| Processing | Low viscosity • Void-free impregnation • Room-temp liquid |
Applications
MV Switchgear: Busbar encapsulation, compartment insulation
Dry-Type Transformers (10-36kV)
Circuit Breaker Insulation
High-Voltage Insulators & Bushings
Processing Flexibility
| Method | Advantage |
|---|
| Vacuum Gravity Casting | Eliminates bubbles in complex geometries |
| Automatic Pressure Gelation (APG) | 50% faster cycle times • Precision molding |
| Compatible with existing manufacturing workflows |
Optimized Formulation
| Component | Material | Ratio (pbw) |
|---|
| Epoxy Resin | LE-9216F (BPA Type) | 100 |
| Hardener | LH-9216F (Anhydride) | 100 |
| Filler | Silica Powder | 300-370 |
| Colorant | LC Series Paste | 3 |
Certified Performance Data
| Category | Parameter | Value |
|---|
| Fire Safety | UL 94 Rating | V-0 (3.0mm thickness) |
| Electrical | Dielectric Strength | 25-28 kV/mm |
| Thermal | Glass Transition Temp (T<sub>g</sub>) | 135°C |
| Mechanical | Flexural Strength | 110 MPa |
Why Choose LE-9216F/LH-9216F?
Risk Mitigation: Prevents arc-fault propagation in switchgear
Zero Compromise: Maintains electrical properties while achieving
V-0
Durability: Withstands thermal cycling (-40°C to +155°C)
Efficiency: Low exotherm curing reduces manufacturing energy
Engineered for critical infrastructure protection – Trusted for
encapsulating medium-voltage components where fire safety and
dielectric performance are non-negotiable.
