INDOOR CASTING / APG LIQUID EPOXY RESIN FOR CT, PT VT 10kV-35kV

PRODUCT DESCRITION:

Liquid, Hot-curing cast resin system for outdoor electrical insulation material for medium and high voltage applicaions

JT 8524A/JT8524 B is epoxy resin system formulated for indoor electrical insulator parts. This product doesn't contain solvent, and has excellent mechanical and electrical performance

Properties:

Excellent mechnical and electrical performance 

High thermal shock resistance

Excellent long term breakdown resistance

Application:

For medium and high voltage indoor electrical insulator parts, and fiber reinforced

And filler reinforced cast resin transformer,instrument transformer, etc.

Conventional vacuum cast technology, mould temperature range is 70℃–80℃,demoulding time is about 5-8h(different as per temperature and volume). After cure at 130℃ and keep warm for 10h.

The demould time and after cure cycle need to be determined as per specific product design and process technology. Pls contact our technicians for more info.

Product data (guideline values)

JT 8524A Liquid modified Epoxy resin

Remark:

To avoid water absorption, putting epoxy resin inside sealed container and keep at temperature 20-25℃ are suggested

JT 8524 B Pre catalytic liquid anhydride curing agent

* typical value can not be regarded as product specs

Remark:

This hardener is sensitive to water. If water content is high, which may change its reactivity, and finally change its performance. It must be stored in sealed container and kept in normal temperature( about 20–25℃).

Process data (guideline values)

General instructions for preparing liquid resin systems

Long pot life is desirable in the processing of any ARALDITE casting resin system. Mix all of the components together very thoroughly at room temperature or slightly above and under vacuum. Intensive wetting of the filler is extremely important. Proper mixing will result in:

• Better flow properties and reduced tendency to shrinkage

• Lower internal stresses and therefore improved mechanical properties on object

• Improved partial discharge behavior in high voltage applications.

For the mixing of medium- to high viscous Epoxy casting resin systems and for mixing at lower temperatures, we recommend special thin film degassing mixers that may produce additional self-heating of 10-15 K as a result of friction. For low viscous Epoxy casting resin systems, conventional anchor mixers are usually sufficient. The prefilled Epoxy resin and Hardener can be stored at elevated temperature (about 60°C) for up to about 1 week, de-pending on formulation. Intermittent agitation during storage is advisable to prevent filler sedimentation.

Mixing time can vary from 0.5 to 3 hours, depending on mixing temperature, quantity, mixing equipment and the particular application. The required vacuum is 0.5 to 8 mbar. The vapour pressure of the individual components should be taken into account.

Hubei plant and Guangdong Plant: