Shanghai Wenyou Industry Co., Ltd.
Vision: More Safer,More environmentally friendly,More efficient Mission: Based on insulating materials ,Serving global electricity Service concept: Only for customet value added We are not afraid of
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Cycloaliphatic Resin + Anhydride Hardener for Precision CT/PT Encapsulation
LE-8516L epoxy resin and LH-8516L hardener deliver ultra-low viscosity (<500cPs mixed) for flawless void-free encapsulation of MV current/voltage transformers. Engineered to penetrate micron-scale gaps in densely wound coils, this system ensures partial discharge <5pC and compliance with IEEE C57.13 accuracy standards.
| Property | Performance |
|---|---|
| Void Elimination | <0.1% microvoids • Prevents electrical treeing |
| Electrical Integrity | Volume resistivity >1E15 Ω·cm • DF <0.01 @50Hz |
| Thermal Management | Conductivity >0.5 W/mK • Tg >110°C |
| Process Efficiency | 5X deeper penetration vs standard epoxies |
Instrument Transformers: CTs/PTs (15-36kV)
MV Switchgear Components
High-Voltage Insulators & Bushings
Precision Electronics Encapsulation
| Method | Key Benefit |
|---|---|
| Vacuum Gravity Casting | Bubble-free impregnation of cellulose barriers |
| Automated Potting Systems | Consistent results for high-volume production |
| Compatible with existing manufacturing setups |
| Component | Material | Ratio (pbw) |
|---|---|---|
| Epoxy Resin | LE-8516L (Cycloaliphatic) | 100 |
| Hardener | LH-8516L (Anhydride) | 100 |
| Filler | Silica Powder | 250-350 |
| Accelerator | LZ-622 | 2-4 |
| Colorant | LC Series Paste | As needed |
| Parameter | Value | Standard |
|---|---|---|
| Mixed Viscosity | 450-480 cPs | ASTM D2196 |
| Partial Discharge | <3 pC @ 1.5Ur | IEC 60270 |
| Flexural Strength | 105 MPa | ISO 178 |
| Thermal Shock | Passes 500 cycles (-40°C↔125°C) | IEC 60068-2-14 |
Precision Reliability: Maintains 0.2% metering accuracy in CTs/PTs
Short-Circuit Resilience: Withstands 50kA/3s mechanical stress
UV/Environment Proof: Cycloaliphatic chemistry resists yellowing
Faster Processing: Accelerator reduces gel time by 35%
The Gold Standard for HV Instrument Transformers – Trusted by global manufacturers for mission-critical grid components where dielectric perfection and long-term stability are non-negotiable.