RHM International, LLC

Innovative High Reliability High Voltage Equipment for the Power Grid

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    • RHM International current transformer typesCurrent Transformers
      • LRGBJ Series – up to 550kV
      • LRGBJ-ZH Cascade Series – above 220kV
      • LRGBJ – ZHD Series for High Currents
      • GDGL Optical/Electronic Series
      • Shunt Capacitor Bank Applications
    • Dry Insulation high voltage transformer bushings by RHM InternationalTransformer Bushings
      • RIF® – FGRBW Tough Series
      • Cascade RIF® for EHV Applications
      • Built-In Insulation Monitoring
    • RHM International high voltage wall bushingsWall Bushings – Special Bushings
      • STB Wall Bushings Specifications
      • STB-L Series: Wall Bushing with CT
      • Special Bushings — Custom Designs
    • cable termination by RHM InternationalHV DRY TYPE OUTDOOR CABLE TERMINATOR
      • Cable Terminator
    • Electronic Combined Voltage and Current Transformer REVCT35-1000 Series 35 kV – 1000 kV by RHM InternationalIEC 61850 Ready and NCITs
      • BIIT™ HV MEASUREMENT BUSHING
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      • Electronic Combined VT and CT
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    • Company Advantages
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    • Product Benefits
      • Outstanding Performance
      • No Maintenance
      • No Explosions
      • Easy Storage
      • Environmentally Friendly
      • Longer Life & Higher ROI
      • Sustained Higher Performance
      • Proven Track Record
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    • 1Our Technologies
      • HV DryShield® for CT’s & Wall Bushings
      • RIF® Insulation for Transformer Bushings & Cable Terminators
    • smart-monitoringSmart Monitoring
      • Built-in Condition Monitoring
      • Bushing based Transformer PD Monitoring
    • The-Dry-Type-RIF-Bushing_The-New-Technology-in-HV-Bushings-1Publications
      • HV DryShield® – A dry type HV insulation system for extreme environments
      • RIF ® bushings The paperless, dry-type bushing technology
      • The Dry Type RIF ® Bushing: New Technology in HV Bushings
      • Advances in Bushings Technology – Integrated Monitoring Systems
    • 3Product Specification Sheets
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Product Benefits

Outstanding Performance

Our high quality products are delivering top notch performance. This has been confirmed both by extensive field experience as well as type tests and special tests carried out by international laboratories that have concluded that our products have delivered the best recorded performances in their categories.

Equally as important, those performances are sustained throughout the life of the product. Our designs have minimized the root causes for aging so we expect you to still be operating our products 40 years from now.

No Maintenance

From a genuine dry, paperless and reliable technology comes genuine maintenance-free operation. Real Peace of Mind for maintenance crews.

As part of our “belt and suspender” approach we also offer a built-in, self-powered insulation condition monitoring option for our products.

No Explosions

HV DryShield® and RIF® products are explosion-free by design for their lifetime, providing a totally safe environment for personnel and residential neighborhoods.

In addition, none of the materials used would sustain fire, hence further limiting risks.

Easy Storage

Our dry, paperless core insulation systems are impervious to water. Storage does not require any particular condition if products are kept in their crates..

Environmentally Friendly

Environmental issues are getting more demanding as power grids continue to grow. This translates into new regulations making recycling or elimination of equipment using toxic insulating media more and more complex and expensive. Sustainability must come from other approaches. Our true dry technologies do not use any toxic material, does not leak any liquid and can be recycled at end of life.

Longer Life & Higher ROI

As many utilities understand, there is much more to the actual cost of equipment than just the purchase price. The notion of “ownership cost” comes closer to reality; when one sums up the cost of acquisition, cost of maintenance, actual life duration, the cost of lost revenues resulting from an incident or worse, the compromised safety of personnel after an explosion or environmental impact of toxic releases, comparisons are striking. Furthermore, the increasing cost of recycling of toxic media at end of life is often overlooked.

We are confident in delivering the best cost of ownership along with a trouble-free operation, so that our customers benefit from our technology tomorrow as well as 40 years from now.

RHM International’s products are uniquely positioned for the future providing a high-quality choice that addresses the industry’s environmental concerns today and in the future.

Sustained Higher Performance

We are continuously tracking the performance of our products through time. This includes full analysis studies of operational equipment after up to 18 years of operations. Partial Discharge as well as the dielectric dissipation factor (tanδ) have consistently been identical or even lower than values recorded when new.

At the root of this performance is a uniform and linear electrical field profile insured by a finely graded condenser insulation without any gap in the overall configuration. This guarantees stress-free operation of the materials used. Those materials are themselves high performance grades with slow aging characteristics.

Consequently, sustained performance and durability are combined for a long operational life.

Proven Track Record

Our products have been used for the past 20 years in all kinds of climatic and industrial environments: from tropical and humid to sub-arctic and icy, from dry and hot to polluted seacoast industrial clusters, from sea-level to 3000m (9000ft) altitudes. They have withstood the harshest conditions.  They have never let our customers down.

Why Us

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