Flexible Casting Epoxy Resin for Transformer Coil Encapsulation -
Adaptable to Different Conditions
Transformers may experience various mechanical and thermal stresses
during their operation, and our flexible casting epoxy resin for
transformer coil encapsulation is designed to adapt to these
different conditions.
This epoxy resin has a certain degree of flexibility, which allows
it to withstand thermal expansion and contraction without cracking
or delaminating. Transformers often go through temperature
fluctuations, and if the encapsulation material is too rigid, it
can cause stress on the coils and lead to failures. The flexible
nature of our resin helps to relieve these stresses, ensuring the
long - term integrity of the encapsulation.
In addition to thermal stress, the resin can also handle mechanical
vibrations. Transformers are subject to vibrations from the
electrical currents passing through them and from external sources.
The flexible epoxy resin can absorb these vibrations, protecting
the transformer coils from mechanical damage.
Despite its flexibility, the resin still provides good electrical
insulation. It effectively separates the electrical components
within the transformer, preventing electrical leakage. It also has
sufficient strength to protect the coils from normal handling and
installation stresses. Our flexible casting epoxy resin offers a
balance between flexibility and strength, making it an excellent
choice for transformer coil encapsulation in a wide range of
operating conditions.
Brief Introduction
LE-8517 is a modified saturated cyclic aliphatic epoxy resin
system, combined with LH-8517, a modified weather-resistant
anhydride hardener. This fast-curing epoxy is ideal for electronic
insulators and is suitable for vacuum casting.
Applications
This epoxy resin is designed for outdoor use in medium and high
voltage electrical insulators, including insulators, transformers,
and various insulation components.
Processing Methods
Processing options include a conventional gravity casting method
under vacuum or an Automatic Pressure Gelation (APG) process. The
production methods can be tailored to accommodate the client’s
existing manufacturing techniques.
Properties
This two-component system is a saturated cyclic epoxy resin without
pre-mixed fillers, remaining in liquid form at room temperature. It
provides excellent UV resistance, outstanding thermal shock
resistance, superior environmental stability, and exceptional
mechanical and dielectric properties.
Formulation
| Epoxy resin | LE-8517 | 100 pbw |
| Hardener | LH-8517 | 100 pbw |
| Filler | Silica powder | 300 - 360 pbw |
| Color paste | LC series * | 3 pbw |
Advantage
Package Image
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Example application image
