APG epoxy casting for high-voltage equipment
Insulation built for the electric future
Shreem Fibrotech makes cast bushings, post support insulators, GIS barriers and composite parts that hold their dielectric strength for decades of grid service.
765 kVBuild readiness
< 5 pCPartial discharge
100%Vacuum cast
Featured range
Epoxy cast insulators and bushings
Made on automatic pressure gelation plants with tailored creepage paths, high cantilever strength and no internal voids.
Need a custom shape or shed profile?
Our engineers design molds and prototypes for OEM switchgear platforms. Send a 2D or 3D drawing and we'll review it.
Full catalogue
Twelve product lines, one casting standard
Every line shares the same vacuum casting process and routine testing.
Post support insulators11 – 36 kV, indoor
RMU bushingsSF6 and oil insulated
VCB spouts & monoblocsVacuum interrupter housings
Busbar standoffsLV and MV bracing
Transformer bushingsLV, HV and OIP
GIS barriersConical and partition insulators
Cast resin transformersCRT / VPI, up to 5 MVA
Instrument transformersCurrent and voltage
Filament wound tubesEpoxy glass, custom sizes
SMC / DMC partsMolded composite parts
Spacers & flange ringsAnnular dielectric parts
Custom toolingMolds and prototypes
Manufacturing & testing
Controlled from resin mix to final test
Automatic pressure gelation keeps cycle times short and voids out of the casting. Each batch is checked before it ships.
Partial discharge
Power frequency withstand
Lightning impulse
Helium leak test
Hydraulic pressure
Dimensional inspection
- Degas and mixResin, hardener and filler mixed under vacuum.
- Pressure gelationInjected into heated molds so the part cures under pressure.
- Post-cure and machineStress relief, then finishing of inserts and faces.
- Test and traceRoutine tests with a record for every batch.
Contact
Tell us what you need to insulate
Share the voltage class, mechanical load and quantity. We reply with a quote and a technical review.
✉Emailinfo@shreemfibrotech.com