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Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Specifications
Brand Name :
WENYOU
Model Number :
LE-9219K/LH-9219K
Certification :
REACH/RoHS/UL/ISO/CE
Place of Origin :
CHINA
MOQ :
20KG
Payment Terms :
L/C,T/T,Western Union,MoneyGram
Application :
Electrical Insulation
Feature :
Water Resistance,high quality
Heat Resistance :
High
Impact Strength :
High
Flammability :
HB Class
Chemical Resistance :
Excellent
Description

The LE-9219K/LH-9219K is a high-performance two-component epoxy resin system designed for medium/high-voltage electrical insulation (12–40.5 kV). Formulated with modified BPA epoxy resin (LE-9219K) and carboxylic anhydride hardener (LH-9219K), it delivers exceptional thermal shock resistance, superior crack resistance, and H-class thermal stability (IEC 60085). Ideal for vacuum casting or APG processes, it ensures reliability in critical indoor electrical components.

Key Features & Advantages

Feature Advantage
Modified BPA Epoxy + Anhydride Hardener Enhanced thermal stability & mechanical strength
Optimized for Vacuum Casting/APG Flexible processing, adaptable to client production methods
Superior Crack Resistance Withstands thermal cycling, reducing failure risks
HB Flammability Rating (UL94) Meets strict safety standards for electrical applications
High Dielectric Strength ≥25 kV/mm (1mm thickness, IEC 60243-1)
Low Water Absorption 0.10–0.20% (23°C/10 days) for long-term insulation integrity
H-Class Thermal Endurance Sustained performance up to 150°C

Applications

Perfect for insulating components in indoor high-voltage systems:

  • Switchgear contact boxes (12–40.5 kV)

  • Bushings, insulators, & encapsulation

  • Transformers, sensors, & circuit breakers

  • HV insulation products requiring precision casting

Key Performance Data

*Cured system: LE-9219K/LH-9219K/Silica powder = 100:100:350 @ 140°C/10h*

Property Value Standard
Glass Transition Temp (Tg) 105–120°C ISO 11357-2
Tensile Strength 65–85 MPa ISO 527
Flexural Strength 105–140 MPa ISO 178
Volume Resistivity 10¹⁵ Ω·cm IEC 62631-3-1
Arc Resistance 181–198 sec IEC 61621
Breakdown Strength ≥25 kV/mm IEC 60243-1
Dielectric Constant 3.0–4.0 (50Hz) IEC 60250
Water Absorption 0.10–0.20% (23°C/10d) ISO 62
Tracking Resistance ≥600 V IEC 60112
Curing Shrinkage 0.8–1.0% HG/T2625

Frequently Asked Questions (FAQ)

Q1: What is the mix ratio for LE-9219K/LH-9219K?
A: Standard ratio is 100:100 pbw (resin:hardener). Filler (silica powder) added at 300–380 pbw.


Q2: How should the hardener be stored?
A: Store in sealed containers at 6–35°C. Avoid moisture exposure. If crystallized, preheat to 70–80°C and stir before use.


Q3: What curing process is recommended?
A: Two options:

Vacuum Casting: Cure 70–80°C/3–5h + 90–100°C/2–4h; Post-cure 130°C/12h.

APG: Mold temp 130–160°C; Post-cure 130–150°C/10–12h.


Q4: Is this system suitable for outdoor use?
A: Designed for indoor electrical insulation only. Hydrophobicity class HC1 (IEC TS 62073).


Q5: What safety measures are required during handling?
A: Mandatory: gloves, goggles, protective clothing. Use ventilation (3–5 air renewals/hour). Avoid skin contact—wash immediately if exposed.

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Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers

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Product Detail
Brand Name :
WENYOU
Model Number :
LE-9219K/LH-9219K
Certification :
REACH/RoHS/UL/ISO/CE
Place of Origin :
CHINA
MOQ :
20KG
Payment Terms :
L/C,T/T,Western Union,MoneyGram
Contact Supplier
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Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers
Epoxy Resin For Indoor High-voltage Switchgear Bushings Transformers

Shanghai Wenyou Industry Co., Ltd.

Verified Supplier
3 Years
shanghai, shanghai
Since 2008
Business Type :
Manufacturer, Exporter, Seller
Main Products :
Electrical Epoxy Resin, Outdoor Epoxy Resin, Flame Retardant Epoxy Resin
Total Annual :
15000000-25000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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