HEDRICH Vacuum Equipment and Resin Potting Systems

Engineered vacuum resin potting equipment, VPI impregnation autoclaves, APG gelation machines, and transformer oil degassing units from HEDRICH.

HEDRICH Vacuum Resin Potting Equipment

HEDRICH vacuum resin potting systems provide automated degassing and dispensing of reactive epoxy and polyurethane media for transformer coils. Equipment integrates continuous on-the-fly OTF degassers and metering units with ceramic dosing pistons and valves.

Continuous on-the-fly OTF degassing stage for moisture removal from filled resin media
Silicon carbide oxide-ceramic metering pistons resisting abrasive mineral fillers
Vacuum encapsulation vessels with custom mold dimensions and multi-zone heating
Spare ceramic dosing sleeves, mixing shaft seals, dispensing valves, and sensors

HEDRICH VPI Vacuum Pressure Impregnation

HEDRICH VPI systems deliver deep vacuum drying and pressure impregnation for high-voltage stators, traction motors, and wind generator windings. Autoclaves utilize inert gas pressurization. Field service parts include lid elastomer seals, gate valves, and pumps.

Deep vacuum degassing and pre-drying followed by controlled hydraulic pressurization
Heavy-duty pressure autoclaves with hydraulic bayonet locking and safety interlocks
Temperature-controlled resin storage and transfer circuit with viscosity tracking
Spare autoclave lip seals, vacuum gate valves, fluid transfer hoses, and filters

HEDRICH APG Automatic Pressure Gelation

HEDRICH APG machinery performs automatic pressure gelation for insulator bushings and instrument transformers. Patented UFC heating enables rapid compound curing. Replacement modules include Gen2 high-pressure dosing pumps, clamping cylinders, and mold seals.

Patented UFC heating module delivering rapid compound cure without thermal stress
Gen2 high-pressure metering pumps handling high filler content in resin matrices
Clamping units with rigid mechanical frames and precise linear hydraulic stroke
Spare parting-line mold seals, heater cartridges, hydraulic valves, and sensors

HEDRICH Vacuum Transformer Oil Purification

HEDRICH vacuum oil purification plants achieve single-pass degasification and moisture removal from transformer dielectric fluids. Units feature heat exchangers and multi-stage vacuum skids. Field spares include fine micro-filters, ppm probes, and pump seals.

Single-pass vacuum moisture extraction and degassing for dielectric insulating oil
Integrated plate heat exchanger providing uniform gentle heating prior to vacuum
Multi-stage pumping system with rotary backing pump and Roots vacuum booster
Spare coalescing micro-filter elements, moisture monitors, pump shaft lip seals

HEDRICH Engineered Vacuum Pumping Skids

HEDRICH vacuum pumping stations combine dry screw pumps or liquid ring units with Roots booster blowers for industrial drying and metallurgy. Systems operate as standalone skids. Replacements include rotary lobe rotors, mechanical face seals, and filters.

Dry screw backing pumps coupled with Roots boosters for clean oil-free vacuum
High pumping throughput across rough, medium, and deep vacuum operating ranges
Heavy-duty skid mount with automated PLC valve control and condenser traps
Spare Roots lobe rotors, screw profiles, shaft mechanical seals, check valves

HEDRICH Vacuum Pump Overhaul and Maintenance

Engineered overhaul and maintenance programs cover HEDRICH equipment vacuum pumps, including Aerzen rotary lobe units. Overhaul procedures include clearance recalibration and bearing replacement. Spares include rebuild gasket kits, belts, and transmitters.

On-site vacuum tightness testing, vibration diagnostic survey, and leak detection
Workshop overhaul of Aerzen rotary lobe units with rotor balancing and shimming
Dynamic test bench run-in verifying ultimate pressure and operating temperatures
Supply of rebuild seal kits, precision bearings, drive belts, and vacuum fluids

Engineering Standards of Vacuum Potting Equipment

HEDRICH vacuum resin potting installations provide precise continuous degassing and metering for high-voltage electrical insulation. The integration of thin-film on-the-fly OTF degassing units ensures bubble-free preparation of abrasive filled polyurethane and epoxy matrices.

Silicon carbide ceramic metering pistons prevent abrasive degradation from micro-silica fillers. Selecting an optimal vessel configuration depends on mold dimensions, curing temperature profiles, and daily throughput targets.

Industrial plants rely on multi-zone heating and automated mold manipulation shuttles to maximize production output while keeping energy consumption low across modern transformer production lines.

Design and Operation of VPI Impregnation Plants

Vacuum pressure impregnation equipment by HEDRICH delivers thorough moisture removal and void-free penetration of dielectric varnishes into traction motor windings and generator stators. The autoclave utilizes deep preliminary vacuum followed by dry air or nitrogen pressurization up to 10 bar.

Storage vessels maintain dielectric fluid temperature through dedicated heating and refrigeration loops equipped with inline viscosity transmitters. Robust quick-locking bayonets incorporate mechanical safety interlocks preventing lid operation under residual pressure.

Automated PLC supervision coordinates resin transfer, pressure holding intervals, and post-impregnation drainage into holding reservoirs.

Automatic Pressure Gelation and Mold Clamping

HEDRICH APG machinery is tailored for automated medium and high-voltage electrical component fabrication. Rigid clamping units provide precise linear movement and high clamping force to prevent parting-line flash during injection.

Patented UFC heating modules rapidly preheat the reactive resin formulation right before entering the mold cavity, cutting cycle times drastically without thermal degradation. Second-generation Gen2 high-pressure metering pumps process formulations containing high filler loadings reliably.

Automated tilt and shuttle mechanisms facilitate component demolding, while temperature-regulated mold platens ensure uniform volumetric shrinkage and zero internal voids.

Single-Pass Transformer Oil Purification Technology

HEDRICH mobile and stationary vacuum oil conditioning units restore dielectric strength to transformer insulating liquids through single-pass dehydration and degasification.

An integrated plate heat exchanger gently warms dielectric fluid before introducing it into the vacuum chamber, maximizing moisture evaporation without thermal degradation.

Multi-stage pumping systems combine rotary backing pumps with high-displacement Roots blowers to sustain vacuum levels below 0.1 mbar during continuous processing.

Coalescing micro-filters extract sub-micron particulates, while precision optical monitors display real-time moisture content in parts per million to verify dielectric compliance.

Engineered Vacuum Pumping Stations and Roots Skids

Heavy-duty vacuum pumping stations engineered by HEDRICH combine oil-sealed rotary pumps or dry screw units with high-performance Roots booster blowers. Skid packages provide high pumping capacity across rough and fine vacuum regimes for industrial drying, degassing, and metallurgical processes.

Condenser traps with automatic drain valves isolate aggressive condensable vapors before reaching mechanical pump stages, extending pump fluid longevity. ATEX-compliant explosion-proof drive motors and automated valve sequencing allow continuous operation in hazardous chemical environments.

Vibration-damped structural bases minimize mechanical transmission to adjacent shop-floor infrastructure.

Factory Maintenance Protocols and Pump Rehabilitation

Sustaining deep ultimate vacuum and target pumping speeds requires systematic preventive maintenance on industrial vacuum machinery.

Workshop rehabilitation of Aerzen rotary lobe units involves dynamic rotor balancing, bearing replacement, and precision calibration of gear synchronization clearances. Vacuum tightness verification using helium mass spectrometry eliminates minute flange leakage across pipe manifolds.

Dynamic load tests on dedicated testing benches confirm baseline operational temperature and ultimate blank-off pressure before equipment reinstallation. High-purity synthetic vacuum lubricants and matched gasket rebuild kits preserve mechanical integrity under thermal stress.

HEDRICH and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of HEDRICH and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.