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UL-Certified | Pre-Mixed Fillers | Superior Dielectric Strength
Engineered for outdoor electrical insulation in Current Transformers (CT) and Potential Transformers (PT), this modified BPA epoxy system delivers crack-resistant encapsulation for 10-35kV terminal posts, bushings, and transformer components. With pre-mixed fillers in both resin (LW-9229A) and hardener (LW-9229B), it ensures consistent thermal shock resistance and long-term durability in harsh environments.
Key Advantages
Crack Resistance: Withstands thermal cycling for outdoor applications
High Dielectric Strength: Critical for 10-35kV insulation systems
Pre-Mixed Fillers: Simplified processing, no weighing errors
Room Temperature Cure: Energy-efficient transformer manufacturing
Moisture & Chemical Resistance: Protects CT/PT units from environmental degradation
Applications
Ideal for:
10-35kV sealed terminal posts
CT/PT transformer potting & coil encapsulation
Outdoor bushings, insulators, switchgear
High-voltage electrical insulation components
Processing Methods
Method
Benefit
Vacuum Gravity Casting
Bubble-free encapsulation for complex geometries
Automatic Pressure Gelation (APG)
High-yield production of crack-resistant parts
Critical Properties
Property
Value/Description
Filler Status
Pre-mixed in resin & hardener
Dielectric Strength
>22 kV/mm (ASTM D149)
Thermal Shock Resistance
Excellent (1,000+ cycles, IEC 60216)
Crack Resistance
Optimized for outdoor exposure
Viscosity
Slurry liquid for deep gap filling
Certification
UL 94 V-0 (Flame Retardant)
Formulation Guide
Component
Product
Proportion
Epoxy Resin
LW-9229A
100 pbw
Hardener
LW-9229B
100 pbw
Colorant
LC-Series*
1 pbw
*Color paste optional for UV-stable pigmentation
Why Choose LW-9229A/B?
This electrical-grade epoxy combines BPA's structural strength with pre-mixed fillers for unmatched crack resistance in outdoor applications. Its slurry viscosity ensures perfect gap filling for CT/PT windings, while room temperature curing reduces production costs. Ideal for 10-35kV terminal posts and transformer encapsulation, it delivers lifelong moisture resistance and dielectric performance under thermal cycling.
Advantage
Package Image
Shipment Image
Example Application Image
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2008
Total Annual:
15000000-25000000
Employee Number:
50~100
Ecer Certification:
Verified Supplier
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, toughe... 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, toughe...